NEW
LISTING
10/10/12
(Click on above
thumbnails to enlarge photos)
warranty
VINTAGE MARANTZ
STEREO RECEIVER
MARANTZ TWENTY SEVEN / MARANTZ 27
#...4476
Circa 1970-73
MIJ
for sale
SOLD 11/5/12
SHIPPED TO SOUTH DAKOTA
Our
technician has completely gone through and 'Certified'
this unit.
Everything was cleaned inside and out including all contacts, switches, controls and I/O jacks. All internal fuses checked for
correct values and replaced where necessary.
He
replaced the questionable
power switch.
All dial & meter lamps were
replaced, as well as the 'stereo' indicator with new bulbs, for
trouble-free service. We also aligned the tuner for optimum performance on
both AM and FM including realigning the 'local osc'.
AM reception on this Marantz 'Twenty Seven', #...4476 is above average.
VERY GOOD TUNER!
FM reception as well great and IMPECCABLY CLEAN!!! Dial pointer track was cleaned of old lube and re-lubed
w/ silicone grease. Output bias adjusted
correctly for clean output. DC offset adjusted to less than 2mV / Ch. All functions tested for perfect
operation. Power supply adjusted to correct voltage. All inputs tested and both sides produce clean
and even sine waves! Tone control shafts have a bit
of 'play' in the bushings, but simply from 30+ years of age (short of
replacing them, they are what they are, and still function fine
electronically). Following restoration procedures,
the unit was run at medium volume, as all our amplifier /
receivers are, into a load with "Loudness" on and both Tone Controls at
10 for 72 hours. All functions test perfectly. Following
electronic refurb, entire unit was
cosmetically detailed inside and out.
Only 'cosmetic' issue is light 'splotching' on the
wood case, but nothing too distracting (see photos above).
Total restoration time
investment ~7 hours.
On our test bench, this unit of this Marantz Twenty Seven / 27
receiver #...4476...,
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
Early and 'Elegant' Marantz stereo receiver from the
early 1970's.
'Build Quality' features:
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
Features include:
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
Marantz Twenty Seven / 27 Stereo Receiver Original Specifications:
"The Marantz 27 has a continuous power
output of xx watts per channel min. @ 8 or 4
ohms fromxx hertz toxx
hertz with no more than xxx THD (measured
utilizing AUX input)"
IHF (Institute of High-Fidelity) / Comparable 'Music' power =
xx watts @ 8 Ohms
POWER / PRE AMP SPECIFICATIONS:
Rated
RMS Power / Channel;
x
IHF Power / Channel;
xxWPC @ 8 Ohms
THD:
<0x
Rated Freq
Response; xxHz
Power Bandwidth; xxxHz
IMD utilizing AUX;
xx%
@
8Ω
High Level
Input Sensitivity / Impedance;
xxmV / xxk Ohms
Tape Output Level
/ Impedance; xV / 7k Ohms @ 1Khz
Treble Control;
xxdB @ xxkhz
Bass Control;
xxdB @ xxhz
Low Filter;
xdB / Oct @
xxhz
TUNER SPECS FOR FM:
Freq Response: xxkHz
Useable IHF Mono RF Sensitivity:
>xx μV
Quieting Slope: xxdB &
xμV,
xxdB & xxμV, xxdB &xxμV
Capture Ratio: xdB
(INCREDIBLE!)
Alternate Channel Selectivity;
xxdB
THD w/ 100% modulation @ 400Hz, Mono /
Stereo: 0.xx%
/ xx%
Stereo Separation @ 1kHz: xxdB
Spurious Rejection: >xxdB
67kHz Suppresion: >xxdB
TUNER SPECS FOR AM:
Useable AM Sensitivity:
xxμV
PHONO SECTION SPECS:
Input Sensitivity: xxmV @
xxkΩ
Again, as
stated before, we have completely gone through this
Marantz Twenty Seven / 27, Stereo Receiver cleaning and
testing all and it gets our full
'Certification'.
With the exception of the above mentioned,
'splotching' to a section of the wood case (see photos above) the unit is
near perfect cosmetically. The brushed
aluminum face and all original, milled knobs in
great shape.
After restoration, receiver looks, performs and sounds great!
This unit features Marantz's 'Variable Overlap Drive'
technology, to virtually eliminate crossover distortion. In addition, this
circuit compensates for internal component 'aging' insuring 'like new'
performance for many years to come. According to an original Marantz Twenty
Seven Brochure states;
"The Model
27 delivers 60 Watts RMS. Most receiver manufacturers measure power by such
ratings as 'Music Power' or 'Peak Power'. Marantz measures power by the only
reliable method - RMS power. Marantz 60 watts sounds more powerful than 180
Watts music power, because Marantz power is delivered throughout the entire
audio spectrum, from 20Hz-20kHz (both channels driven), at or below the
rated distortion. Marantz guarantees that you receive 60 Watts RMS."
This is a
VERY 'Musical' sounding tuner/pre/power-amp. Very 'full, warm and phat'.
Great 'low-end' depth at any volume. Tone controls have a lot of
influence. Overall a pleasing unit to listen to in all aspects. Measures
15" wide x 16.5" deep x
7" high and weighs 35
lbs unpacked. Includes our standard 30 day limited warranty!
MARANTZ Twenty Seven / 27 STEREO RECEIVER
Cond. 8.5
(C) R.R.
SOLD 11/5/12
SHIPPED TO SOUTH DAKOTA
(Above text, in it's entirety, property of
www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright
Information' page for details) |
|
VINTAGE MARANTZ 'BLUE FACE' STEREO RECEIVER
MARANTZ 2010 'BLUE FACE'
SOLD
|
|
|
NEW LISTING 4/1/08
(Click on above
thumbnails to enlarge photos)
VINTAGE MARANTZ 'BLUE
FACE' STEREO RECEIVER
MARANTZ 2215B
CIRCA 1973-77
SOLD 4/01/08
|
- |
- |
VINTAGE MARANTZ 'BLUE FACE' STEREO RECEIVER
MARANTZ 2216
#1
SOLD 2/17/05
|
VINTAGE MARANTZ 'BLUE FACE' STEREO RECEIVER
MARANTZ 2216
#2
SOLD
|
|
VINTAGE MARANTZ 'BLUE FACE' STEREO RECEIVER
MARANTZ 2220
Circa 1973-74
SOLD |
NEW
ADDITION 10/12/11
(Click on above thumbnails to enlarge photos)
warranty
VINTAGE
MARANTZ 'BLUE FACE' STEREO RECEIVER
VINTAGE STEREO RECEIVER
MARANTZ MODEL 2220B
#...0883
Circa 1974-77
(actual internally dated 1976)
Classic 'Blue Face'
MIJ
SOLD 10/27/11
|
|
VINTAGE MARANTZ 'BLUE
FACE' STEREO RECEIVER
MARANTZ 2230
#1
SOLD
|
(Click on above thumbnails to enlarge photos)
warranty
VINTAGE MARANTZ 'BLUE
FACE' STEREO RECEIVER
MARANTZ 2230 #2
Circa '71-'73
SOLD 12/18/05
|
NEW
LISTING
8/14/12
(Click on above
thumbnails to enlarge photos)
warranty
VINTAGE MARANTZ 'BLUE
FACE' STEREO RECEIVER
MARANTZ 2230
#...3615
Circa 1972- maybe 74
Classic 'Blue Face'
MIJ
SOLD 12/6/12
SHIPPED
TO OHIO
Our
technician has completely gone through and 'Certified'
this unit.
Everything was cleaned inside and out including all contacts, switches, controls and I/O jacks. All internal fuses checked for
correct values and replaced where necessary. He
replaced the
power switch. He also 're-tensioned' the original dial cord. All indicator lamps checked, and
most replaced proactively and all dial & meter lamps were
replaced, as well as the lamps in the 'dial pointer' with new bulbs, for
trouble-free service. A total of ten (10) lamps
replaced. We also aligned the tuner for optimum performance on
both AM and FM. Dial pointer track was cleaned of old lube and re-lubed
w/ silicone grease. Output bias adjusted
correctly for clean output. All functions tested for perfect
operation. Power supply adjusted to correct voltage.
Output transistors removed and fresh heat sink
compound applied. All inputs tested and both sides produce clean
and even sine waves! Tone controls are super quality, Alps brand,
"full-size", de-tented potentiometers. Following restoration procedures,
the unit was run at medium volume, as all our amplifier /
receivers are, into a load with "Loudness" on and both Tone Controls at
10 for 72 hours. All functions test perfectly. Following
electronic refurb, entire unit was
cosmetically detailed inside and out.
Only 'cosmetic' issue is the lower, right corner of
the face plate is 'tweaked' slightly, but nothing too distracting.
Total restoration time
investment ~7+ hours.
Features include:
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
Marantz 2230 Stereo Receiver Original Specs:
"The Marantz 2230 has a continuous power
output of xxwatts per channel min. @ 8 or 4
ohms fromxx hertz to xxhertz with no more than
xxx% THD (measured
utilizing AUX input)"
Comparable 'Music' power = xx watts @ 8 Ohms
POWER / PRE AMP SPECIFICATIONS:
THD:
<xx%
@
8Ω @
Max rated power
Dynamic Range;
xxdB
Power Bandwidth; xxHz
IMD utilizing AUX;
xx%
@
8Ω
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
Damping factor: >xx@ 8Ω full
bandwidth (FYI; twice the damping factor of it's
'little brother' the 2220)
Input Sensitivity:
xxmV for output of xx watts @ 8 Ohms
Input Impedance:
xxk
Ohms
Channel Separation: >xxB @ 8Ω full
bandwidth
(xdB better than the 2220)
TUNER SPECS FOR FM:
Freq Response: xxkHz
Useable Mono RF Sensitivity: xxμV
Capture Ratio: xxdB
(about twice as good as the 2220)
FM Selectivity;
xxdB
Signal for 50dB quieting, Stereo: xxμV
THD w/ 100% modulation @ 400Hz, Mono /
Stereo: x%
x%
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
Stereo
Sub-Carrier Rejection (38kHz): xxdB
Stereo Separation @ 1kHz: xxdB
PHONO SECTION SPECS:
Input SensitivityxmV @
xxkΩ
Again, as
stated before, we have completely gone through this
Marantz 2230, Stereo Receiver cleaning and
testing all and it gets our full
'Certification'.
With the exception of the above mentioned, slight
'tweak' in the lower, right corner of the front plate (see photos above), the brushed
aluminum face and all original, milled knobs in
great shape. After restoration, receiver
looks, performs and sounds great! This is a ...
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
...at any volume. Tone controls have...
Overall a ...
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
... aspects. Measures
17.5" wide x 14" deep x 5.5" high and weighs
27
lbs unpacked. Includes our standard 30 day limited warranty!
MARANTZ 2230 STEREO RECEIVER
Cond. 8 (due to minor face 'ding')
SOLD 12/6/12
SHIPPED
TO OHIO
(Above text, in it's entirety, property of
www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright
Information' page for details)
|
VINTAGE MARANTZ 'BLUE FACE' STEREO
RECEIVER
MARANTZ 2235B
SOLD
09/21/04
|
VINTAGE MARANTZ 'BLUE FACE'
STEREO RECEIVER
MARANTZ 2235B
Circa 1973-74
SOLD |
NEW LISTING 12/5/09
(Click on above
thumbnails to enlarge photos)
warranty
VINTAGE MARANTZ STEREO RECEIVER
MARANTZ 2235B38
#...0680
Circa 1977-79
MIJ
SOLD 12/21/09
|
VINTAGE MARANTZ 'BLUE FACE'
STEREO RECEIVER
MARANTZ 2240
SOLD
|
VINTAGE MARANTZ 'BLUE FACE' STEREO RECEIVER
MARANTZ 2240
SOLD
|
VINTAGE MARANTZ 'BLUE FACE' STEREO RECEIVER
MARANTZ 2240
Circa '71-'73
|
NEW LISTING 9/4/07
(Click
on above thumbnails to enlarge photos)
warranty
VINTAGE MARANTZ
'BLUE FACE' STEREO RECEIVER
MARANTZ 2245
SOLD 9/14/07
|
NEW
LISTING
8/14/12
(Click on above
thumbnails to enlarge photos)
warranty
VINTAGE MARANTZ 'BLUE FACE' STEREO RECEIVER
MARANTZ 2245
#...6570
Circa 1974-77
Classic 'Blue Face'
MIJ
SOLD 9/19/12
SHIPPED TO CALIFORNIA
Our
technician has completely gone through and 'Certified'
this unit.
Everything was cleaned inside and out
including all contacts, switches
(requires extensive removal of front chassis assembly and circuit
boards), controls and I/O jacks. All internal fuses checked for
correct values. He disassembled and 're-built' the
power switch (as the original is better than the substitutions
available). He also replaced the original, and frayed tuner dial string
with new, and proper dial cord (never an easy operation). All indicator lamps checked, and
most replaced proactively and all 8 dial & meter lamps were
replaced, as well as the lamps in the 'dial pointer' with new bulbs, for
trouble-free service. We also aligned the VERY sophisticated tuner for
optimum performance on both AM and FM. Dial pointer track was cleaned of
old lube and re-lubed w/ silicone grease. We also replaced
a 'questionable' 'Speaker A'
output clip with original. Output bias adjusted
correctly for clean output as well as the DC offset to a low level. He
also upgraded a fairly 'questionable' AC power cord with a heavy,
3-Prong, grounded one. All functions tested for perfect
operation. Power supply adjusted to correct voltage.
Output transistors removed and fresh heat sink
compound applied. All inputs tested and both sides produce clean
and even sine waves! Tone controls are super quality, Alps brand,
"full-size", de-tented potentiometers. As
the original face plate on this unit had a few minor scuffs, we replaced
it with a clean, original Marantz 2245 faceplate from a 'donor' unit we
had.
Following restoration procedures,
the unit was run at medium volume, as all our amplifier /
receivers are, into a load with "Loudness" on and both Tone Controls at
10 for 72 hours.
Following electronic refurb, entire unit was
cosmetically detailed inside and out.
All functions test perfectly. Total restoration time
investment ~10+ hours.
On our test bench, this unit of this receiver #...6570,
amplifiers produced ...
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
Classic 'Blue Face' Marantz, 2245 stereo
receiver. Elegant looking Face is milled from a solid plank of Aluminum
with matching milled aluminum controls. This unit looks
great!
Features include:
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
Marantz 2245 Stereo Receiver Original Specs:
"The Marantz 2245 has a continuous power
output of...
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
POWER / PRE AMP SPECIFICATIONS:
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
Again, as
stated before, we have completely gone through this
Marantz 2245, Stereo Receiver cleaning and
testing all and it gets our full
'Certification'.
Brushed aluminum face and all original, milled knobs in fabulous shape.
After restoration, receiver looks, performs and sounds great! This is a
VERY...
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
Measures
17.5" wide x 14" deep x 5.5" high and weighs 35
lbs unpacked. Includes our standard 30 day limited warranty!
MARANTZ 2245 STEREO RECEIVER
Cond. 8.5
SOLD 9/19/12
SHIPPED TO CALIFORNIA
(Above text, in it's entirety, property of
www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright
Information' page for details)
|
NEW LISTING 10/30/20
(click on above thumbnails to enlarge photos)
warranty
RESTORED / REFURBISHED / FULLY SERVICED
VINTAGE MARANTZ STEREO RECEIVER
MARANTZ 2250
#...1178
Circa 1976-77
Classic 'Blue Face'
MIJ
SOLD 10/31/20
SHIPPING TO BOB IN TENNESSEE
ü Our
technician has completely gone through and 'Certified' this unit.
ü We have completely gone through this unit cleaning everything including
all switches, controls and contacts. Extensive cleaning of unit
internally.
ü Internal
fuses checked for continuity and correct values. No issues found,
fortunately. We don't like seeing incorrect fuses having been installed
in a unit as that could mean it had prior issues, or if a fuse value was
'increased' it could have allowed too much current through an 'ailing'
circuit causing un-due / un-necessary damage.
ü Power
switch replaced with #26-855 as well as 'clamping' capacitor
ü Broken
'Dolby' switch repaired and replacement knob sources
ü
Controls were 'flooded' w/ 'De-OxId' and are quiet
ü
Internal Power
supply circuit adjusted to correct 35V output and checked for
'ripple' w/ O-Scope
ü
DC Offset adjusted
on both R&L to 0mV+/-0.4mV!
ü
Bias adjusted to
correct 8mVDC
ü We aligned the tuner front-end for optimum AM & FM
performance as older internal tuner components have always drifted on
vintage gear over the years.
ü Tuner
string checked for any fraying then
re-tensioned on Gyro-Wheel to increase traction & relieve flywheel binding and
re-centered pointer to correct dial position (after
proper tuner, front-end alignment).
ü All
dial, indicator & meter lamps
'proactively'
replaced (5x Dial & 2x Meter 8V/200mA, 1x Pointer
lamp #25-160)
ü We
also
checked the heat sink compound which should be good for
decades.
ü Missing
original buttons / knobs replaced from proper donor units as
necessary (6 in total)
ü Missing
original feet replaced from proper donor units as necessary (all
four)
ü All
inputs tested and both side produces clean and even sine waves
into 'brick-wall'
8 & 4 Ohm loads! No power supply hum of any kind. It's dead silent!
All functions test fine.
ü Following
restoration procedures, the unit was run continuously at medium volume,
as all our amplifier / receivers are, into a load with "Loudness" on and
both Tone Controls at 10 for
72 hours into a 4 Ohm load.
ü Full
Cosmetic detail inside and out
Cosmetically the unit is in overall nice shape. There's just a
couple of minor scuffs / smudges above the dial window and a
'hairline' scratch on the dial window (see photos above). The
balance of the face, knobs and case look good!
On
our test bench, this particular Marantz 2250, #...1178
amplifiers each produced 22 Volts per channel
for 60 Watts per channel @ 8 Ω via discrete
output & 20 Volts per channel for
100 Watts per channel @ 8Ω via discrete,
"MARANTZ" branded (originals) TO3 Metal Cased outputs (4x 2SC1343) AC Idle current at
350mA, DC offset output
adjusted to <1mVDC either channel.
Bias correctly adjusted to 8mVDC across emitters. Floor
noise measured at >-60dBm w/ AUX shorted.) ___________________________
Classic 'Blue Face' Marantz, 2250
stereo receiver. Elegant looking Face is milled from a solid
plank of Aluminum with matching milled aluminum controls. This
unit looks great!
Marantz 2250 Features
include:
- Marantz exclusive "Gyro-T...
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
Marantz 2250 Stereo Receiver
Original Specs:
"The Marantz 2245 has a continuous power output of
...
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
Again, as stated before, we have completely gone through
this Marantz 2250 Stereo Receiver
cleaning and testing all and it gets our full
certification.
Brushed aluminum face and all original, milled knobs in fabulous
shape. After restoration, receiver looks, performs and sounds
great! This is a VERY 'Musical' sounding tuner/pre/power-amp.
Very 'full, warm and phat'. Great 'low-end' depth at any volume.
Tone controls have a lot of influence. Overall a pleasing unit
to listen to in all aspects. Measures 17.5" wide x 14" deep x
5.5" high and weighs 35 lbs unpacked. Includes our standard 90
day limited warranty!
MARANTZ 2250 STEREO RECEIVER
Cond. 8.5
SOLD 10/31/20
SHIPPING TO BOB IN TENNESSEE
(CONS. R.R.)
(Above
text, in it's entirety, property of
www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright
Information' page for details)
|
|
|
VINTAGE MARANTZ 'BLUE FACE'
STEREO RECEIVER
MARANTZ 2275
Circa '74-'76
SOLD
7/27/05 |
NEW
LISTING 6/15/09
(Click
on above thumbnails to enlarge photos)
warranty
VINTAGE MARANTZ 'BLUE FACE' STEREO RECEIVER
MARANTZ 2325 "Dolby"
#...0053
Circa 1974
SOLD 6/20/09
|
VINTAGE
MARANTZ STEREO RECEIVER
MARANTZ 2330BD
"WORLD AC POWER" ™
Circa '71-'73
SOLD 8/10/05
|
|
NEW LISTING 6/13/07
(Click on above thumbnails to enlarge photos)
VINTAGE MARANTZ STEREO
RECEIVER
MARANTZ 2500 AM/FM STEREO RECEIVER
HUGE POWER @ 500Watts Plus
SOLD 5/6/08
|
NEW LISTING
5/9/19
(Click on above thumbnails to enlarge photos)
warranty
RESTORED / REFURBISHED / FULLY SERVICED VINTAGE
MARANTZ
STEREO RECEIVER / CASSETTE TAPE
DECK MARANTZ 4025 'CASSEIVER' (aka MCR-425) AM/FM STEREO RECEIVER /
CASSETTE DECK
#...0181
Circa
1978-80
SOLD 7/30/19 SHIPPING TO TIM IN TENNESSEE
Our
technician has completely gone through and 'Certified' this unit.
ü We have completely gone through this unit cleaning everything
including all switches, controls and contacts. VERY time consuming to properly service this unit, especially the
8-track deck. Extensive cleaning of
unit internally.
ü Internal
fuses checked for continuity and correct values. No issues found,
fortunately. We don't like seeing incorrect fuses having been
installed in a unit as that could mean it had prior issues, or if a
fuse value was 'increased' it could have allowed too much current
through an 'ailing' circuit causing un-due / un-necessary damage.
ü
Controls were 'flooded' w/ 'De-OxId' and are quiet
ü Entire transport was disassembled down to the
chassis, and every mechanical part was cleaned of "varnished" lubes and
re-lubed as well as the always at issue, Pinch Roller plunge assembly,
re-lubed and reassembled (VERY DIFFICULT and TIME
CONSUMING on this unit)
ü
Main
drive belt has been replaced
with NEW for trouble free service (#42-1975 and
counter belt replace with #030).
ü
Capstan
flywheel removed, cleaned, burnished and re-lubed prior to re-install.
Entire transport and mechanism has been cleaned, re-lubed and
de-magnetized.
ü
Heads
have been cleaned and de-magnetized and are in great shape.
ü
Head alignment and
azimuth at 125Hz, 1kHz and 10kHz adjusted for BOTH directions for 'peak performance'
with O-Scope
and w/ STL and TEAC MTT-257H calibration / alignment
tapes.
Both channels now even output.
ü
Meters adjusted to even zero with symmetric
with Volt meter, O-Scope
and w/ STL and TEAC MTT-257H calibration / alignment
tapes.
Both channels now even output.
ü
Both
Internal playback amplifier channels adjusted
with Volt meter, O-Scope
and w/ STL and TEAC MTT-257H calibration / alignment
tapes.
Both channels now even output.
ü
Meters adjusted to even zero
with symmetric input
with Volt meter, O-Scope
and w/ STL and TEAC MTT-257H calibration / alignment
tapes.
Both channels now even output.
ü
Both
Internal Record amplifier channels adjusted
with Volt meter, O-Scope
and w/ STL and TEAC MTT-257H calibration / alignment
tapes.
Both channels now even output.
ü
Record
signal path contacts cleaned and burnished for static-free performance
ü
Linear
Record switch cleaned so no 'Motor Boating' effect
ü
Internal
playback, meter and record level pots also adjusted w/ O-scope.
ü
Following refurbishment, Speed checked with factory test tape to
100%
accuracy! (meaning in this case, that our 1000Hz test tape plays back at
1000Hz on our Freq Counter Meter)
ü
Deck
'sonically' checked for WOW and Flutter with no appreciable issues
ü
Record
Meters adjusted for 'even' readout and performance
ü
Pinch Roller replaced with new, as following initial transport
overhaul, we found that occasionally, on certain tapes the original
/ old pinch roller would 'crinkle / wrinkle' the tape
ü
Floor
noise of receiver tested @-60dBm.
Floor noise of cassette deck measured with 'blank' Fuji tape at
1.75mVAC.
ü
Tuner
string checked
for any fraying then re-tensioned to
increase traction & relieve flywheel binding and re-centered pointer
to correct dial position.
ü
We
aligned the tuner front-end for optimum AM & FM performance as older
internal tuner components have always drifted on vintage gear over
the years. VERY GOOD TUNER!
FM sounds fantastic. AM
is decent as well.
ü All
dial, indicator & meter lamps
work or were
replaced.
ü Stereo
indicator lamp working
ü We also
checked the heat sink compound which should be good for
another 30 years.
ü All
inputs tested and both side produces clean and even sine waves
into 'brick-wall'
8 & 4 Ohm loads! No power supply hum of any kind. It's dead silent!
All functions test fine.
Total restoration time investment
16+ hours.
ü Following restoration procedures, the unit was run
continuously at medium volume, as all our amplifier / receivers are,
into a load with "Loudness" on and both Tone Controls at 10 for
72 hours into a 4 Ohm load.
ü On our test bench, each internal amplifier of this particular unit, #...0181,
produced peak power of
16 Volts
per channel for 28 Watts per channel @ 8 Ohm
and 13 Volts @ 4 Ohm for 42
Watts
per channel
@
1khz from actual discrete output transistors (2x
2SA1060 and 2x 2SC2484) (ALL the other 'compacts' we were working on
utilized STK power pack, which had some to do with why we couldn't
resurrect many of them. The DC was just too high in many cases, and
couldn't be rectified practically).
ü AC Idle current at
<.35A, & floor
noise-60dBm.
ü DC offset
checked to <30mVDC / channel (VERY good for a
'compact' unit and as good or better than many separate components).
____________________________
So, as with anything you want to look up on the 'world wide interweb',
you will find a myriad of opinions. Many of them are from folks who have
never even personally experienced what they are 'spouting off' about.
Well, of course, I have mine too, however, mine will be from someone who
does have 'personal experience' with whatever I'm 'expounding' about,
and is from 'real world' experiences, 'down in the trenches'. I often
get a 'kick' out of what folks have to say (generally negative) about a
piece of gear, with no actual, personal experience. Recently read so
many opinions of a speaker we had just finished and were about to
audition, prior to auditioning them, that I was not holding out much
hope for their final performance. Not only was I surprised by their
actual performance (in a positive way), they were completely the
antithesis of what EVERY opinion on the web stated, with NONE of them
ever actually hearing them (they all stated so in their opinions).
Anyway, I'll climb down from my 'ivory tower' for a moment just to say
that for what this is designed to be it really came out as a wonderful
unit following it's 18+ hours of service to bring it back to essentially
'new' condition.
Wonderful condition,
and for a 'compact system' REALLY GREAT SOUNDING,
late 70's, silver face
'Combo' Receiver from
Marantz.
We've had this for years, but just recently got around to restoring it.
We had a few 'compacts' from brands such as Sony, Panasonic, Fisher,
Marantz, but most did not pan out (didn't even attempt the 'cheeeeeese'
from companies like Electrophonic, GE, Lloyds, Sound Design, Symphonic and a host of
other 'bottom feeder' units.
Again, we have done the previously stated refurbishment / restoration work
(~16+ hours) on this unit to insure its
performance, and it gets our full
'Certification'. All functions tested
for perfect operation. Overall,
it is in great cosmetic condition! Looks and sounds
great!
Measures 22.5" wide x
6.5" tall x 16.5"
deep and weighs
29 lbs unpacked. Includes our
standard 90 day
limited warranty.
Cond. 8.5
Marantz 4025 / MRC425 Stereo Receiver / "Casseiver"
SOLD 7/30/19 SHIPPING TO TIM IN TENNESSEE
(Above text, in it's entirety, property of
www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright
Information' page for details)
|
VINTAGE MARANTZ 'BLUE FACE' STEREO RECEIVERMARANTZ
MARANTZ MODEL 4240
"Blue-Face"
Quadraphonic
Stereo 2 + Quadradial 4
STEREO RECEIVER
SOLD
|
NEW
LISTING
10/10/12
(Click on above
thumbnails to enlarge photos)
warranty
VINTAGE MARANTZ QUADRAPHONIC / STEREO RECEIVER MARANTZ 4240 #...0302 Circa 1974-76 Classic 'Blue Face' MIJ
SOLD 10/22/12 SHIPPED TO PENNSYLVANIA
Our
technician has completely gone through
and 'Certified'
this unit.
Everything was cleaned inside and out
including all contacts, switches
(requires extensive removal of front chassis assembly and circuit
boards), controls and I/O jacks. All internal fuses checked for
correct values. He disassembled and 're-built' the
power switch (as the original is better than the substitutions
available) and corrected some previous erroneous wiring. He also replaced the original, and frayed tuner dial string
with new, and proper dial cord (never an easy operation). Found
another previous, 'non-factory' mod to the 2 / 4 channel power amp selector
and restored to original 'schematic design'. All indicator lamps and all 8 dial & meter lamps were
replaced, as well as the lamps in the 'dial pointer' with new bulbs, for
trouble-free service. We also aligned the VERY sophisticated tuner for
optimum performance on both AM and FM. Generally AM reception in a
stereo receiver is treated as an 'after thought', but the AM reception
on this Marantz 4240, #...0302 is WAY above average
(frankly it's amazing).
VERY GOOD TUNER!
FM reception as well great and IMPECCABLY CLEAN!!! Dial pointer track was cleaned of
old lube and re-lubed w/ silicone grease. We also replaced
a 'questionable' 'Speaker A'
output clip with original. Wave form issues with
driver boards / outputs corrected. Output bias adjusted
correctly for clean output as well as the DC offset to a low level.
All functions tested for perfect
operation. Power supply adjusted to correct voltage.
Output transistors removed and fresh heat sink
compound applied. All inputs tested and both sides produce clean
and even sine waves! Tone controls are super quality, Alps brand,
"full-size", de-tented potentiometers. As
the original wood grain metal case had some issues, we had it chemically
stripped by a furniture refinisher and a coat of 'pro' quality primer laid
down, followed by a couple of coats of black 'hammer-tone' finish. Looks
nice. Following restoration procedures,
the unit was run at medium volume, as all our amplifier /
receivers are, into a load with "Loudness" on and both Tone Controls at
10 for 72 hours.
Following electronic refurb, entire unit was
cosmetically detailed inside and out.
All functions test perfectly. Total restoration time
investment ~20+ hours.
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
Classic 'Blue Face' Marantz, 4240 Four-Channel-Quad / stereo receiver.
Elegant looking Face is milled from a solid plank of Aluminum with matching
milled aluminum controls. This unit looks great! Features include:
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
Marantz 4240 Stereo Receiver Original Specs:
"The Marantz
4240 has a continuous power
output of ...
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
POWER / PRE AMP SPECIFICATIONS:
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
TUNER SPECS FOR FM:
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
TUNER SPECS FOR
AM:
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
PHONO SECTION SPECS:
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
Again, as
stated before, we have completely gone through this Marantz 4240, Stereo Receiver cleaning and
testing all and it gets our full
'Certification'
with 20+ hours of tech time. Brushed aluminum face and all original,
milled knobs in fabulous shape. After restoration, receiver looks,
performs and sounds great! This is a VERY ....
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
....aspects. Comes
with a pdf 'e' copy of the Marantz 4240 owners / users / operation
manual. Measures
17.5" wide x 14" deep x 5.5" high and weighs
35
lbs unpacked. Includes our standard 30 day limited warranty! MARANTZ 4240 QUAD / STEREO RECEIVER Cond. 8.5+
SOLD 10/31/12 SHIPPED TO PENNSYLVANIA
(Above text, in it's entirety, property of
www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright
Information' page for details)
|
NEW
LISTING
10/10/12
(Click on above
thumbnails to enlarge photos)
warranty
VINTAGE MARANTZ QUADRAPHONIC / STEREO RECEIVER
MARANTZ 4270
#...0202
Circa 1973-78
Classic 'Blue Face'
MIJ
SOLD 10/22/12
Our
technician has completely gone through and 'Certified'
this unit.
Everything was cleaned inside and out
including all contacts, switches
(requires extensive removal of front chassis assembly and circuit
boards), controls and I/O jacks. All internal fuses checked for
correct values. All indicator lamps and all 8 dial & meter lamps were
replaced, as well as the lamps in the 'dial pointer' with new bulbs, for
trouble-free service. We also aligned the VERY sophisticated tuner for
optimum performance on both AM and FM. Generally AM reception in a
stereo receiver is treated as an 'after thought', but the AM reception
on this Marantz 4270, #...0202 is WAY above average
(frankly it's amazing).
VERY GOOD TUNER!
FM reception as well great and IMPECCABLY CLEAN!!!
Dial pointer
track was cleaned of old lube and re-lubed w/ silicone grease.
Output bias adjusted
correctly for clean output as well as the DC offset to a low level.
All functions tested for perfect
operation. Power supply adjusted to correct voltage.
Output transistors removed and fresh heat sink
compound applied. All inputs tested and both sides produce clean
and even sine waves! Tone controls are super quality, Alps brand,
"full-size", de-tented potentiometers. Looks
nice.
Following restoration procedures,
the unit was run at medium volume, as all our amplifier /
receivers are, into a load with "Loudness" on and both Tone Controls at
10 for 72 hours.
Following electronic refurb, entire unit was
cosmetically detailed inside and out.
All functions test perfectly.
On our test bench, the amplifiers of this Marantz 4270 receiver
#...0202, in '2-Channel' mode, produced xxx Volts
@ 8 Ω per channel for xx
Watts / channel. In '4-Channel' / Quadraphonic mode each channel
produced xx Volts @ 8 Ω for
xx x 4 Watts and
xx Volts @ 4 Ω for
xx x 4 Watts via
discrete, TO-3 style, original metal cased output devices at 1khz. (8x
Hitachi 2SC897)
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
AC current at idle measured at xxxA. DC
offset adjusted to produce <xxmV out of any of
the 4 channels. Bias set correctly for clean sine waves and correct
draw.
Classic and 'Blue Face' Marantz, 4270
'BIG', Four-Channel-Quad / stereo receiver.
Elegant looking Face is milled from a solid plank of Aluminum with matching
milled aluminum controls. This unit looks great!
Features include:
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
Marantz 4270 Stereo Receiver Original Specs:
"The Marantz 4270 has a continuous power output...
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
POWER / PRE AMP SPECIFICATIONS:
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
TUNER SPECS FOR FM:
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
TUNER SPECS FOR
AM:
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
PHONO SECTION SPECS:
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
Again, as
stated before, we have completely gone through this
Marantz 4270, Stereo Receiver cleaning and
testing all and it gets our full
'Certification'.
Brushed aluminum face and all original, milled knobs in fabulous shape.
After restoration, receiver looks, performs and sounds great! This is a
VERY ...
HEY, WHY ALL THE 'X'd' OUT /
OMITTED SPECS AND TEXT?
... at any volume. Tone controls have a lot of
influence. .... Comes
with a pdf 'e' copy of the Marantz 4270 owners / users / operation
manual. Measures
17.25" wide x 15.5" deep x
6" high and weighs 36
lbs unpacked. Includes our standard 30 day limited warranty!
MARANTZ 4270 QUAD / STEREO RECEIVER
Cond. 8.5+
SOLD 10/22/12
(Above text, in it's entirety, property of
www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright
Information' page for details) |
VINTAGE MARANTZ STEREO RECEIVER
MARANTZ MR-1120
Circa '82-'84
SOLD
|
- |
- |
VINTAGE MARANTZ STEREO RECEIVER
MARANTZ SR-325
Circa 1984-85
SOLD 7/18/05
|
VINTAGE MARANTZ STEREO RECEIVER
MARANTZ SR-340
SOLD |
- |
VINTAGE MARANTZ STEREO RECEIVER
MARANTZ SR-1000
SOLD
12/14/04
|
VINTAGE MARANTZ STEREO RECEIVER
MARANTZ SR-2000
SOLD
|
-
|
VINTAGE MARANTZ STEREO RECEIVER
MARANTZ SR-4000 #1
SOLD |
VINTAGE MARANTZ STEREO RECEIVER
MARANTZ SR-4000 #2
Circa '79-84
SOLD
|
NEW LISTING
11/26/08
(Click on above thumbnails to enlarge photos)
warranty
VINTAGE MARANTZ STEREO RECEIVER
MARANTZ SR-4000
#...0740
Circa 1979-81
MIJ
SOLD 12/19/08
|
- |
- |
VINTAGE MARANTZ STEREO RECEIVER
MARANTZ SR-8000
SOLD
|
- |
- |
- |
CLICK HERE
TO SEE OUR RECEIVERS CURRENTLY FOR SALE!
|
---- revised 11/7/17
|