NEW LISTING
8/19/2022
(Click on above
thumbnails to enlarge photos)
warranty
RESTORED / FULLY SERVICED
& WARRANTED
VINTAGE PIONEER STEREO AM / FM ANALOG TUNER
PIONEER TX-9100 / TX9100 TUNER
#...739M
Circa 1973-74
Made in Japan
for sale
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 'Tuning'
meter had a magnet weld that had failed rendering it
inoperative. Tech disassembled and repaired meter and now
operates properly. Both meters reinstalled
ü Repaired
bent AM toggle switch shaft
ü Switches
/ Selectors (rotary, toggle and slide) were also flooded with
cleaner.
ü
We also aligned the tuner front-end on both AM & FM bands for optimum
performance as older tuner components will have 'drifted' over the
years.
ü
AM
'Stick' ferrite antenna ball and socket inspected for cracks /
chips and none found.
ü
Tuner string checked for
any fraying then re-tensioned to increase traction & relieve
flywheel binding and re-centered pointer to correct dial position
to agree with slide rule scale and tuning capacitor.
ü
Dial
lamps functioning, and due to a low current draw (do not run
particularly 'hot') should last a long time (meters do not have
illumination by design)
ü
Replaced 2x meter lamps (8V / .25A)
ü No
power supply hum of any kind. It's dead silent!
ü All
functions test fine.
ü FM
reception also incredible and IMPECCABLY CLEAN!!! AM
is fairly typical for a stereo tuner (not typically a 'strong
suite' for stereo tuners, and this one is no exception).
ü Following
electro / mechanical work, unit was fully detailed cosmetically,
inside and out.
ü No
power supply hum of any kind. It's dead silent!
All functions test fine. Cosmetics in excellent condition.
Following 10.5 hours of restoration
procedures, the unit was ran continuously for 48 hours.
ü
On our test bench AC Idle current at .1A,
& floor noise
-48dB
____________________________
Very
impressive and classy looking Pioneer TX-9100, AM/FM Stereo
tuner with performance to match. Handsome, 'Blue-Face' with a
'smoked' plexi dial glass. This tuner 'sounds' INCREDIBLE!!! One
of the best tuners we have ever had. Very 'phat' sonics, with
incredible presence and depth. A/B testing with this tuner was
an 'eye opener' for us, and we've heard a lot of gear. From the
original Pioneer TX-9100 tuner's owners manual;
"The FM MPX
Decoder uses the design principle of the 'phase lock loop'
applied in it's circuitry. It has no inductances or capacitances
which can cause phase shifts and distortions. This functions by
any phase dislocation that might occur is automatically detected
and compensated by a loop circuit. This results in an
unprecedented high degree of stability irrespective of
temperature or humidity changes. FM stereo channel separation
always remains sharp and clear-cut throughout the audio
frequency range."
This tuner is very well built, with internal shielding on
EVERYTHING!
VERY impressive specs as well!
Pioneer TX-9100 AM/FM
Stereo Tuner Features:
- Internal
shielding on EVERYTHING (see photo above)
- Weighted flywheel "slide rule" analog tuning
- 'Fully shielded' 8-gang
tuner
- Analog tuning Meter
- Analog Signal Strength Meter
- Stereo indicator lamp
-
Dual Level FM Muting
(separate from Stereo / Mono selector)
-
Separate Variable Output Level controls for AM and FM
-
Stereo 'Auto' / Mono selector (separate from FM muting selector)
-
Pulse noise filter to filter extraneous noise from passing cars,
shavers, blow dryers, etc.
- De-featable
MPX filter
- RCA outputs for FM Multipath Vertical / Horizontal to connect
to an Oscilloscope or to the Pioneer SD-1100 'display unit'.
VERY handy to determine best antenna placement / orientation
- RCA outputs for both 'Fixed' and 'Variable' levels ('Fixed'
level handy for direct connection to a tape recorder or other
recording device, while sending the 'Variable' on to your
amplifier for separate monitoring)
- Built-in AM Ferrite / 'Stick' antenna w/ swivel bracket
- Front Mounted, 1/4" headphone jack with Variable Output level
control
- Rear accessible 'mains' fuse
PIONEER TX-9100 AM/FM TUNER SPECIFICATIONS:
(This was essentially what became the later Pioneer TX-9500,
but this had a few specs that were actually better than it's
replacement!)
Tuning Capacitor; FULLY SHIELDED! 8
gang, 5 FM & 3 AM
FM SECTION:
Circuitry: 3 MOS FET, 2-Stage RF amp, If Band Selector,
double balanced NFB type PLL MPX, built-in pilot signal auto
canceller.
RF Sensitivity (Mono); IHF Usable (1.5 μV)
Capture Ratio; 1.0dB
FM Alternate Channel Selectivity (IHF); 90 dB @ 400kHz
(better than the Pioneer TX-9500)
THD @ 1k w/ 100% modulation / 65dBf output: 0.2% mono;
0.3% stereo
FM Stereo Separation: @ 50-10KhZ= >30dB & @ 1kHz = >40dB
Frequency Response; 20Hz-15kHz
Signal for 50dB quieting Mono; 2.5 μV
Signal for 50dB quieting Stereo; 35 μV
Signal-To-Noise Ratio @ 65dBf:
Mono = 80 dB
Stereo = 75 dB
Spurious Response Ratio; 110 dB
Image Rejection; 110 dB
AM Suppression Ratio; 65dB (better than the Pioneer
TX-9500)
Sub Carrier Suppression; 65dB
Muting Threshold; 5μV / 22μV
Stereo Threshold; 5μV
De-Emphasis; selectable 50 or 75μs
AM SECTION:
IHF Sensitivity; IHF Usable 300 μV w / 'stick antenna'
Selectivity; 40dB
Signal-To-Noise Ratio: 50 dB
Image Response Ratio; 65 dB
IF Response Ratio; 85 dB
AUDIO SECTION:
Output Level FM / Imp FM @ 100% modulation: 'FIXED': 650mV /
4.7kΩ
'VARIABLE': 70mV-2V / 300kΩ
Headphone Output: 150mV @ 8kΩ
Again, we have
completely gone through this unit. Looks NEAR NEW both inside
and out. This is essentially the tuner that became the Pioneer
TX-9500, but with the 'smoked-blue and Walnut' look of a couple
years previous. Same performance, specs and slightly better
build quality. Cosmetically the wood veneer
case had a ding in the left, front edge and a scratch on the
top. The face has a light scratch on it's top, horizontal edge
and the dial window bezel trim has some of the typical oxidation
we're seeing on much Pioneer gear over the past 10 years or so
(see photos above).
Includes a pdf, 'e' copy, download of the
Pioneer TX-9100
owners / users / instruction manual.
Looks beautiful, works
and sound great! Measures 17" wide x 13.5" deep x 5.5" high and
weighs 19 lbs unpacked. Includes our standard 30 day limited
warranty.
PIONEER TX-9100 STEREO TUNER
Cond. 8.5+
$789.
(Above text,
in it's entirety, property of
www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright
Information' page for details)
|
NEW LISTING
5/16/2024
(Click
on above thumbnails to enlarge photos)
warranty
RESTORED / REFURBISHED / FULLY SERVICED
VINTAGE
MCS AM/FM TUNER
MCS 3701
ANALOG, WEIGHTED FLYWHEEL, SLIDE-RULE TUNING
#...3617
Circa 1979-80
Made in
Japan / (MIJ)
for sale
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 Signal
and Tune Center, analog meters removed and replaced with original / OEM
meters as after 35+ years, they had become sluggish
ü Switches
/ Selectors (rotary, toggle and slide) were also flooded with
cleaner.
ü RCA
I/O jacks cleaned of surface corrosion.
ü We also aligned the tuner front-end on both AM & FM bands for optimum
performance as older tuner components will have 'drifted' over the
years.
ü AM 'Stick'
ferrite core adjusted for optimum reception and minimal noise
ü AM 'Stick'
antenna 'ball and socket' inspected and is holding well.
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 Original
face plate had a couple 'battle scars' that we weren't happy with, so we
sourced another MCS 3701 with a much cleaner face plate / panel and
replaced it.
ü All
dial & meter lamps and LED's checked as good,
but we changed them anyway to new custom, 'Blue' tinted lamps trouble-free
service.
ü No
power supply hum of any kind. It's dead silent!
ü All
functions test fine,
ü Following restoration
procedures, the unit was ran continuously for 48+
hours. Total restoration time investment ~5
hours. You will not be disappointed.
____________________________
Very impressive and classy looking, NEC built,
MCS 3701, AM/FM tuner with
great performance on
both AM and FM.
This tuner has a very selective FM section and
an above average AM section. Much better than most stereo tuners.
Black anodized,
aluminum face with matching 'milled' knobs. Internally,
our tech noted that, "it's a very well laid out unit, that lends
itself to good / easy serviceability with actual 'test points'. More
gear should be built like this".
MCS 3701 Features:
- Weighted flywheel "slide rule" analog tuning with heavy, milled
aluminum knob
- Full sized, 5-Gang tuning capacitor
- Analog tuning Meter
(replaced as stated above)
- Analog Signal Strength Meter (replaced as
stated above)
- Stereo LED indicator lamp
- FM Muting
(separate from Stereo / Mono selector)
- Stereo / Mono selector (separate from FM muting selector)
- Built-in AM Ferrite antenna w/ adjustable core
MCS 3701 Tuner Specifications (specs from
similar model):
Tuning Capacitor:
5 gang,
3 FM / 2 AM
Frequency Response:
9Hz-16kHz
FM RF Sensitivity (Mono): IHF
Usable 1.8 μV
Capture Ratio: 1.1 dB
Image Rejection: 85 dB
THD @ 1k w/ 100% modulation / 65dBf output: 0.20% mono: 0.3%
stereo
FM Stereo Separation: @ 1000 Hz: 45 dB
Signal for 50dB quieting in Mono μV:
3.5 μV
AM RF Sensitivity:
400 μV
AM Selectivity: 30
dB
AM Signal-To-Noise Ratio:
42dB
This tuner is
in fabulous condition. Again, we have completely gone through this
unit. Looks GREAT both inside and out.
The only cosmetic issue worth mentioning is a small
striation on the face plate, above the 'Stereo' indicator (see above
photos).
Works and sounds
great as well!
Measures
17.5" wide x 14"
deep x 5.75" tall and weighs 15 lbs unpacked. Includes our standard
30 day
limited warranty.
MCS 3701
Cond.
8.5
$349.
(Above text, in it's entirety, property of
www.oaktreevintage.com / Oak Tree
Enterprises, LLC. See 'Copyright
Information' page for details)
|
NEW LISTING 11/27/08
(Click
on above thumbnails to enlarge photos)
warranty
RESTORED / FULLY SERVICED
& WARRANTED
VINTAGE
ONKYO ANALOG AM / FM STEREO TUNER
ONKYO T-4040
#...7201
Circa 1979
MIJ
for sale
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 Switches
/ Selectors modified for cleaning and flooded with cleaner.
ü
AM 'Loop' antenna 'swivel joint' inspected and is
in fine shape
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
AM
Ferrite Ant trimmed.
ü
AM
and FM 'front end' aligned for best performance.
ü
All LED indicators checked and ALL dial lamps
checked and
replaced where necessary.
ü No
power supply hum of any kind. It's dead silent!
ü All
functions test fine
Following restoration
procedures, the unit was ran continuously for 48+
hours. Total restoration time investment ~3
hours. You will not be disappointed.
ü
On our test bench AC Idle current at .1A,
& floor noise -60dB
No
power supply hum of any kind. It's dead silent! All
functions test fine. Following restoration procedures, the unit was
ran continuously for 48 hours.
____________________________
Classic, Silver-faced,
Onkyo T-4040 ANALOG, AM/FM Stereo tuner with performance
to match. Matte aluminum face with
'matte'
finish knobs.
Onkyo T-4040 Features:
- Analog Tuning
-
Weighted flywheel "slide rule" analog tuning with heavy, aluminum
knob
- 5-Gang Tuning Capacitor
- Variable Output control
- 5-Segment LED signal strength meter
- LED
'Tuning
Directional' indicators
- Back-lit, light "green" dial indicator lamps
- Stereo LED indicator
- FM Muting / mono function
ONKYO T-4040
SPECS:
TUNER SPECS FOR
FM:
Tuning Capacitor:
variable, 5 gang
Frequency Response: 30-15Mhz (to FCC limits)
Capture Ratio: 1.5dB
Channel Selectivity: 60dB
Useable Sensitivity (mono):
10.8 dBf / 1.9 μV
Useable Sensitivity (stereo):
18.3 dBf / 4.5 μV
Stereo Signal Strength for
50dB Quieting:
35 μV / 36 dBf
Mono Signal Strength for
50dB Quieting:
3.5 μV / 16.1 dBf
THD @ 1k for 100% modulation / output: 0.15%
mono: 0.3% stereo
FM Stereo Separation:
40dB @ 1kHz
& 30dB @ 10kHz
Signal-To-Noise Ratio @
1k / maximum output
(DIN): Mono
73dB, Stereo 66dB
Again, we have completely gone through this unit. Looks great both
inside and out. Unit looks great with only very
minor 'tics'.
Tuner is in
great condition.
Works and sounds fabulous! Measures 17.15"
wide x 13.5" deep x
3.75"
high and weighs 10 lbs unpacked. Includes our standard 30 day
limited warranty.
ONKYO T-4040
Cond.
8.5
$329.
(Cons. R.R.)
(Above text, in it's entirety, property of
www.oaktreevintage.com / Oak Tree
Enterprises, LLC. See 'Copyright
Information' page for details)
|
NEW ADDITION 4/19/13
(Click
on above thumbnails to enlarge photos)
warranty
RESTORED / FULLY SERVICED
& WARRANTED
VINTAGE
KENWOOD STEREO AM / FM ANALOG TUNER
KENWOOD KT-413 / KT413 TUNER
SERVO CONTROLLED, ‘AUTO-SEARCH’ TUNING
#...2456
Circa
1980-82
Made in
Japan
for sale
ü
Our technician has completely gone through
and 'Certified' this unit.
ü
Everything was cleaned inside and out including extensive cleaning of
all contacts, switches, controls, motor drive and I/O jacks.
ü
Dial cord repaired and restrung.
ü
Repaired motor mounting plate.
ü
Fuses checked and replaced where necessary.
ü
All Dial lamps replaced with new bulbs.
ü
We also extensively aligned the tuner front-end, as well as the 'MPX'
circuit for optimum AM & FM performance as older internal tuner
components have always drifted on vintage gear over the years.
ü
Tuner Presets are for manual / ‘user placement’ indication as tuning
sensor doesn’t read them, and we were not able to address that.
ü
Following
electro / mechanical work, unit was fully detailed cosmetically, inside
and out.
ü
No power
supply hum of any kind. It's dead silent!
All functions test fine.
ü
Cosmetics are in excellent condition.
ü
Following restoration procedures, the unit was run continuously for 48
hours.
____________________________
Very impressive and classy looking Kenwood KT-413, AM/FM Stereo tuner
with performance to match. Handsome, 'Silver-Face' with clean
functions. This tuner 'sounds' INCREDIBLE!!!
Not sure why, but this tuner is one of the best performing tuners we
have listened to in a long time. The ‘Auto-Search’ function works
brilliantly. Very ‘solid’ locking when it finds a station.
‘Station-Lock’ is positive with no detectable drift. This is on BOTH AM
and FM. Very 'phat' sonics, with incredible presence and depth. A/B
testing with this tuner was an 'eye opener' for us, and we've heard a
lot of gear. This tuner is very well built including rotating internal
ferrite rod antenna.
The tuner
preset markers do not function but still work as ‘manual indicators’ to
show where your favorite stations are.
Kenwood KT-413 AM/FM Stereo Tuner Features:
-
Station Preset indicators for AM
and FM
- 'Fully shielded' 5 gang tuner
- Motorized automatic “Servo Lock” tuning mechanism
- Digital Signal Strength Meter
- Stereo indicator LED
- FM Muting has Auto or Mono selection
- RCA outputs
- Built-in AM Ferrite / 'Stick' antenna w/internal rotation via rear
panel
KENWOOD KT-413 AM/FM TUNER SPECIFICATIONS:
Tuning Capacitor: SHIELDED! 5 gang, 3 FM & 2 AM
FM SECTION:
Circuitry: FET front end
RF Sensitivity (Mono):
IHF Usable (0.9 μV) @t S/N 26dB, 40 KHz
Dev
Capture Ratio: 1.0dB
Selectivity (IHF): 53 dB @ 300 KHz, 20dB input
THD @ 1k w/ 100% modulation / 65dBf output:
0.1% mono: 0.15%
stereo
FM Stereo Separation: @ 250 Hz – 6.3 KHz 40dB, 122.5 KHz 35dB
Frequency Response:
30Hz-15kHz +2 dB/-2dB
Signal for 50dB quieting Mono: 4 μV
Signal-To-Noise Ratio IHF:
Mono = 77 dB , Stereo = 72dB
Image Rejection: 55dB
AM SECTION:
IHF Sensitivity: 16 μV @ IHF S/N 20dB
Signal to Noise Ratio:
48dB @ 2 mV input
Image Rejection Ratio: 45dB
This tuner is in very good condition. Again, we have completely gone
through this unit. Looks NEAR NEW both inside and out.
This tuner has a very selective FM section and
an above average AM section. Much better than most stereo tuners. The tuner preset markers do not function ‘automatically’, but still work
to show where your favorite stations are. Again, I think I can safely
say, it's probably one of the best sounding, most 'musical' tuners,
we've ever heard (and yes, we've been doing this for almost 30 years).
Looks beautiful, works and sound great! Includes AM
ferrite and FM dipole antennas. Measures 15.5" wide x 11" deep x
5.5" high and weighs 9 lbs unpacked. Includes our standard 30 day
limited warranty.
KENWOOD KT-413 STEREO TUNER
Cond. 8.5+
$299.
(Above text, in it's entirety, property of
www.oaktreevintage.com / Oak Tree
Enterprises, LLC. See 'Copyright
Information' page for details)
|
NEW ADDITION
11/16/17
(Click
on above thumbnails to enlarge photos)
warranty
RESTORED / FULLY SERVICED
& WARRANTED
VINTAGE
TECHNICS ANALOG AM / FM STEREO TUNER
TECHNICS ST-8077 'SUPER-LOW PROFILE'
#...A123
Circa 1980-84
MIJ
for sale
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 Switches
/ Selectors modified for cleaning and flooded with cleaner.
ü
AM 'Stick' ferrite core adjusted for optimum
reception and minimal noise
ü
AM 'Stick' antenna 'swivel joint' inspected and is
holding well.
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
All LED indicators for trouble-free
service.
ü No
power supply hum of any kind. It's dead silent!
ü All
functions test fine,
Following restoration
procedures, the unit was ran continuously for 48+
hours. Total restoration time investment ~3
hours. You will not be disappointed.
Service notes from it's
'work sheet' has technician note, "nicely laid out
circuit boards...good internal build quality...surprisingly HEAVY
chassis / construction...tuning flywheel assembly VERY WELL MADE"
VERY GOOD TUNER! Generally AM reception in a stereo receiver is
treated as an 'after thought', but the AM reception on this one is
WAY above average. Pulls in stations like an old 'Tube' radio! FM
reception also incredible and IMPECCABLY CLEAN!!!
ü
On our test bench AC Idle current at
<0.1A,
& floor noise -60dB
No
power supply hum of any kind. It's dead silent! All
functions test fine. Following restoration procedures, the unit was
ran continuously for 48 hours.
____________________________
Very classy and 'handsome', 'Super-Low Profile'
Technics ST-8077, tuner with performance
to match. Brushed aluminum face with 'matte'
finish knobs.
Technics ST-8077 Features:
- Super 'Low Profile' chassis
-
Weighted flywheel "slide rule" analog tuning with heavy, aluminum
knob
- 'Servo Lock' for 'drift free' FM reception
- LED 'Tuning
Directional' Arrows and Active Servo Lock indicators
- Stereo LED indicator
- FM Muting / mono function
- Record Level Sine Wave generator
- Vertical and Horizontal RCA outputs for connection to an O-Scope
Technics ST-8077 SPECS:
TUNER SPECS FOR
FM:
Tuning Capacitor: variable, 5 gang
FM Tuning Range:
88-108Mhz
Capture Ratio: 1.0 dB
Channel Selectivity: 75 dB
Stereo Signal Strength for 46dB Quieting:
20uV
THD @ 1k / 65dBf output: 0.08%
mono: 0.1% stereo
FM Stereo Separation: 45dB @ 1kHz
Image
Rejection @ 98Mhz: 80dB
IF Rejection @ 98Mhz:
100dB
AM Suppression:
55dB
Signal-To-Noise Ratio @1k / maximum output: Mono
69dB, Stereo 65dB
TUNER SPECS FOR AM:
Tuning Range: AM Band 525kHz-1605kHz
Useable Sensitivity for a S/N of 20dB (IHF
Bar Antenna):
30μV
Selectivity:
40dB @ 1kHz
IF rejection:
40dB @ 1kHz
Image rejection:
50dB @ 1kHz
Again, we have completely gone through this unit. Looks great both
inside and out. Only minor striations on top
panel, near rear of unit. FM performance is typically great
and AM is WAY above normal for a stereo tuner. Came out great after
alignment. Tuner is in great condition.
Works and sounds great! Measures 17.75"
wide x 12.5" deep x 1.75"
high and weighs 10 lbs unpacked. Includes our standard 30 day
limited warranty.
TECHNICS ST-8077
Cond.
8.5
$299.
(Cons. R.R.)
(Above text, in it's entirety, property of
www.oaktreevintage.com / Oak Tree
Enterprises, LLC. See 'Copyright
Information' page for details)
|
