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Purveyors of Electronic, Musical and Vintage goods from then, now and in between. 
Since 1982.

STEREO EQUALIZERS, REVERBS / SIGNAL PROCESSORS VINTAGE AND USED

 

Used / vintage stereo EQ's / equalizers by Pioneer RG-2, EX-9000, Sansui RA-500, RA-700, RA-990, SR-202, spring reverbs & delays. DBX dynamic range expanders, switchers, selectors & noise reduction units DBX 200, 007, 200X, 222, 224. Pioneer SR, RG, 202w 60, 90, 303 reverbs & delays. Teac Pioneer Kenwood AT-80, DT-5, 510 Audio Timers & Sansui RG-700, 710, SE-9, Equalizers. BIC FM8 Beam Box. JVC SEA-80, 50, EQ's. Yamaha, ADC SS EQ, Bose 901 E EQ / equalizers & reverbs.
 

 


AUDIO EQUALIZERS
and our philosophy on them.
   
                               "Are Equalizers really necessary? I just paid $30 grand for my speakers. They shouldn't need any EQ. Right!??"

Short answer is probably yes, an EQ will generally be beneficial to most systems.
     Most speaker designers strive to make a speaker's curve as "flat"* as their projected size parameters and target retail price will allow. The human hearing curve is not "flat". Most folks' hearing is accentuated in the midrange (it's where the human voice is centered) and attenuated in the bass and treble. Sort of a reverse "rock-n-roll smile" curve. When you hear a good, "flat" response speaker, it will likely appear to have an over abundance of mids, at least for most listeners. It will also likely have a deficiency in bass and possibly treble. It will most likely sound  "thin", the degree of which can vary from slight to extreme, depending again, on many variables. This might not even be readily apparent when auditioning speakers, but generally if you hear a pair speakers with an appropriately adjusted, EQ engaged, then you listen to it bypassed, you will want to re-engage it as quickly as possible.
     The classic arguments against using an EQ have been that an EQ, or any additional inserted signal processing device, makes the signal path less "pure" and adds noise. Also, again, "these speakers were expensive and shouldn't need an EQ". To address the first point, this issue can usually be reduced to a more than desirable point by utilizing a high quality EQ or signal processor. The noise floor should certainly be below audible levels, and it doesn't take too much of an EQ to achieve that for most folks systems.  While the first point is valid, a good EQ's benefits usually far outweigh any minor noise issues, which are probably below most listeners audible limits in the first place. The second issue was answered previously, in the above paragraph.   In fact, the better the speakers, the more they would likely benefit from a reduction of the midrange frequencies, due to their as "flat as possible" curve. Again, this would apply to the average persons hearing curve. Some "cheap" speakers, will have a "rock-n-roll smile" EQ curve built-in by utilizing drivers, crossover and cabinet combinations, that have an over abundance of bass and treble, and a deficit of mids by design. That would beg the question of "why wouldn't they all just do that then". The answer to that is that any respectable speaker manufacturer wouldn't try and dictate a built-in curve into a speaker other than as flat as assigned parameters will allow, for a number of reasons.
     Another less apparent, but still valid reason for utilizing an EQ can be to compensate for listening room acoustic characteristics. This is generally more difficult to assess, but overtime could become a desired need. This need would obviously change with any parameter change in the listening environment. Also, and no offense, but as we age and as we are exposed to various, sometimes, injurious sonic environments and events, our sensitivity to frequency ranges will change.
     One way to look at a specific speaker / listening environment combination is to think of it as a blank artists canvas. A really high quality speaker system would be comparable to a high quality canvas, brushes and material. Said another way, a "non-flat" EQ curve / listening environment / speaker combination is akin to starting your painting with a dirty, blotchy canvas. The listening environment to a well lit room with natural lighting, conducive to a creative mood. Until you "shape" the EQ, there is no painting on the blank canvas. Once you shape the EQ to your tastes, in a way that compliments the speaker design / room combination, you have created your work of art.

    While I can appreciate all the arguments for not using an EQ, in the end, I generally use an EQ with it's curve slightly boosted in the bass and treble frequencies and attenuated through the mid frequencies from "Zero" position (the "rock-n-roll smile" curve). It will usually require adjustment following any change in speakers, listening environment parameter adjustments and with the material I am listening too. I also have a 1/3 octave RTA monitor / spectrum analyzer with a pink noise generator and analyzing mic to establish an accurate "flat" point to start from.

 * Contrary to a somewhat common misconception, "Flat" does not mean "dull". "Flat" refers to the graphic "curve" of a speakers output when analyzed by a spectrum analyzer. Ideally a speaker should be able to reproduce the human hearing range with all frequencies as close to "zero" (even amplitude or "flat") as is practical for the intended design / price point levels. The listener can then modify it from there by various methods (usually some sort of signal processor such as an EQ) to their tastes.


 


 

 



         NEW LISTING 8/29/09
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VINTAGE
SOUNDCRAFTSMEN
DUAL 10 BAND STEREO EQ
       MODEL
RP2215-R  RP2215R

 
CIRCA 1978
MADE IN USA

SOLD 10/11/11

Unit was completely disassembled, all linear faders cleaned and re-lubed as well as all internal switches. Most jack and fader solder joints re-touched for trouble-free service. Classy looking silver face, Rack Mountable, Soundcraftsmen 20 band Equalizer (10 bands per stereo channel). Dual Tape Monitors with and "EQ Recording" function (allows you to imprint the selected EQ curve on your tapes and recordings). Output level controls with level indicators.
 Unit is clean both cosmetically and sonically. Looks fine and sounds great! Un-switched AC outlet on rear panel. We have completely gone through it, checking all functions.

 The Soundcraftsmen RP2215-R, Audio System Equalizer. Great quality dual 10 band EQ. This is the EQ only version of the Pre-Amp / EQ that is the "heart" of our main audition system here at Oak Tree Vintage. Each of the graphic controls feature a full +-15db of cut / boost and are an extra-long 50mm in throw length (most home units are 30mm).
 Features:
 
 - One Octave Graphic EQ
 - 10-Band, Graphically controlled frequencies per channel
  - +- 15dB Cut / Boost (most do only 10 dB)
 - The 10 frequency centers are as follows (starting at the low-end):
 30Hz - 60Hz - 120Hz - 240Hz
 - 480kHz - 960Hz - 1,920Hz - 
 3,840kHz - 7,680Hz & 15,360kHz.
- Variable Input Level with Unity Gain assist indicators
- Standard 19" Rack-mount
  - 50mm Linear Pots

 
 - Tape Monitor
 (Tape Monitors can be used with Tape / Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc) Dubbing can be used with CDR (CD recorders) units)
 
 - EQ Record function, for imprinting EQ curve to recordings
  - EQ defeat / bypass
- Un-switched AC convenience outlet on rear panel
 
 
Original Specs:
 
 # Channels: 2 (stereo)
 # Bands: 10
 # Cut / Boost dB's: 15±
 Output (RMS V): 10

 THD: 0.01% @ rated output, 20-20kHz
 S/N A-weighted: 114 dB

 
 Again we have completely gone though this unit testing all functions. It was then "burned" continuously for 72 hours. EQ is in great cosmetic shape and looks near NEW and sounds GREAT!  Measures 19" wide x 11" deep x 5.25" high and weighs 12 lbs unpacked. Includes our 90 day limited warranty.
SOUNDCRAFTSMEN RP2215-R
 Condition 8.5
 $329.
SOLD 10/11/11



Optional Walnut Wood Soundcraftsment side panels currently available for this unit.
$85. pair

SOLD 10/11/11





 




         NEW ADDITION 5/29/10
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FISHER

 STEREO OCTAVE
GRAPHIC EQUALIZER

 
          EQ-2322
 EQ2322  
 #...
3643
 
 Circa 1980-81 
  
*"WORLD AC POWER"
 MIJ 

  
We have completely gone through this unit, cleaning inside and out including all contacts, switches and controls, including the unique power / signal pass switch. All functions tested for perfect operation. All inputs tested and both side produces clean and even sine waves! No power supply hum of any kind. It's dead silent!  All inputs tested and both side produces clean and even sine waves! Checked with O-Scope. No power supply hum of any kind. It's dead silent!
  
____________________________

Very easy to use and quality Fisher 'Studio Standard' 10-band "combined" stereo, graphic EQ. The Fisher EQ-2322 covers the following frequencies: 31.5Hz, 63Hz, 125Hz, 250Hz, 500Hz, 1kHz, 2kHz, 4kHz, 8kHz and 16k. Each frequency also allows cut / boost of a full 12 dB (most home EQ's are only a maximum of 10 dB + or - ).
Features include:

- Stereo Shared 10 graphic bands
- 1 Octave centers

- EQ defeat
- EQ Recording function to imprint tapes / CD's / DAT's / Hard Drive with EQ curve for playback on a car stereo or to allow for deficiencies in speakers.
-
Tape Monitor  (Tape Monitors can be used with Tape / Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc) Dubbing can be used with CDR (CD recorders) units)
- AC convenience outlet on the back panel (un-switched @ 100 watts capacity)
* Semi "WORLD AC POWER"™  50 / 60 cycles

Original Specs:
 
 # Channels: 2 (stereo)
 # Bands: 10 (combined L&R)
 # Cut / Boost dB's: 12±
 Max Output (RMS V): 10

 THD: 0.01% @ rated output, 20-20kHz
 S/N A-weighted: 110 dB


This is a good looking and performing EQ. EQ built using super quality, de-tented linear controls  with 55mm throw. Again we
have completely gone through cleaning it & checking all functions. All controls and switches cleaned for worry-free service. Measures 16.5" wide x 13" deep x 3.25" high and weighs 9 lbs unpacked. Includes our standard 90 day limited warranty.

FISHER 'STUDIO STANDARD' EQ-2322
  
Condition 8.5
  
$239.

 

  


 

 

         NEW LISTING 5/6/11
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PRE-OWNED
REALISTIC
DUAL 12 BAND STEREO EQ
       MODEL 31-2009
3
 312009
#... 4335
Circa 19
82-83
 

SOLD 11/7/11

 Classy looking silver face, Realistic 24 band Equalizer (12 bands per stereo channel). Dual Tape Monitors with bi-directional dubbing. Output level control. Built in Dynamic Range Expander by 'IMX'. This is actually one of the best sounding EQ's we have had come through the site! Very "musical" sounding with lots of clarity and punch, but then check out the S/N ratio in the specs!
Unit features:
  
- Dual 12 band, 'Octave' Graphic EQ  
- Each of the graphic controls feature a full +-12db of cut / boost (instead of the common 10 db)

 
 - 30mm in throw length, high quality, linear, de-tented faders
- 12 frequency centers are as follows starting at the low-end:
30Hz - 63Hz - 110Hz - 190Hz - 330Hz - 580kHz - 1kHz - 1.7kHz - 3kHz - 5.2kHz - 9kHz & 16kHz.
- Dual Tape Monitor(Tape Monitors can be used with Tape / Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc) Dubbing can be used with CDR (CD recorders) units)
- Bi-Directional Dubbing
- 'IMX' licensed 'Dynamic Range Expander' w/ infinitely variable 'depth' control

- EQ Recording function to imprint tapes / CD's / DAT's / Hard Drive with EQ curve for playback on a car stereo or to allow for deficiencies in speakers.
- Dual infinitely variable 'Output Level' controls

  - EQ bypass
  - An un-switched AC convenience jack located on the back rated at 200 Watts

  
Original Specs:
 
 # Channels: 2 (stereo)
 # Bands: 24 (12/channel)
 # Cut / Boost dB's: 12±

 Freq Response w/ EQ 'Zero'd': 5-50kHz +.05dB / -1dB
THD: 0.02% @ rated output, 20-20kHz
 S/N A-weighted: 90 dB !!!


 Unit is clean both cosmetically and sonically. Looks fine and sounds great! Un-switched, 200 watt AC outlet on rear panel. We have completely gone through it, checking all functions. Includes our standard 90 day limited warranty.
REALISTIC 31-2009
 Condition 8.5
 (C)
M.R.

SOLD 11/7/11

 



 


NEW LISTING
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VINTAGE
ADC

STEREO GRAPHIC
EQUALIZER EQ

"SOUND SHAPER ONE" MK II

Circa 19
80-82
for sale
Very easy to use and good quality ADC dual 5-band "combined" stereo, graphic EQ. This ADC EQ covers the following frequencies:  60Hz, 240Hz, 1kHz, 3.5kHz, 10kHz. Each frequency also allows cut / boost of a full 12 dB (most home EQ's are only a maximum of 10 dB + or - ).
Other features include:

- Tape Monitor
 
(Tape Monitors can be used with Tape / Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc)
Dubbing can be used with CDR (CD recorders) units)

- Classic ADC Rack Handles

This is the classic entry level ADC. Classic ADC look combined with simple, yet great audio performance. EQ built using super quality, de-tented linear controls  with a full 60mm of throw!
We have completely gone through cleaning it & checking all functions. All controls and switches cleaned for years of worry-free service. Measures 12.25" wide x 9" deep x 4.25" high and weighs 3 lbs unpacked. Includes our standard 90 day limited warranty.
ADC SS-ONE MK II
Cond. 8.5
$109.
 


 


AUDIO REVERBS / DELAYS
 
Pioneer_SR-303_Stereo_Reverb_CBS_web.jpg (70799 bytes)   

          
Pioneer_SR-303_Stereo_Reverb_CBS_collage.jpg (265218 bytes)

            NEW LISTING 5/10/10

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VINTAGE PIONEER
STEREO
REVERB AMPLIFIER
/ DELAY
                SR-303
SR303
SR-9 SR9

 
#...684M
  
"WORLD AC POWER"
MIJ

for sale

Unit was disassembled for restoration / reconditioning. Both rotary potentiometers cleaned for quiet operation. Most jack and fader solder joints re-flowed for trouble-free service. New tape monitor switch installed as the original no longer 'locked' (many of these units you see on the on-line auctions have broken switch locks, and it's not a matter of 'if', but 'when' they will fail after 30 years. We do sell replacements if you bought one of those units or have one). We disassembled the display and replaced lamps where needed. We then tested both channels with a test tone and O-scope, analyzing both channels with and without each independent effect. It was then cleaned inside and out, then polished to near new look.
 Unit is clean both cosmetically and sonically. Looks and sounds great!
 
______________________________

The SR-303 is "The-must-have" signal processor for the most desirable, 'Silver-Face / Blue Meter' Pioneer rack mount gear series.  Pristine Silver face electronic Reverb / Delay. Unit features  really 'Cool' "Time-Tunnel", Blue display that pulses with the beat. If you choose, you can display it even if you have the effect bypassed. Reverb / Delay depth and time are completely variable for custom tailoring to your tastes. Either effect can be added to recording so you can transfer the sound effect to your auto.  

Features include:
 - Electronic Reverb / Delay depth and time is completely variable for custom tailoring to your tastes
 - 'Reverb Record' feature allows effect to be added to recording so you can transfer the sound effect to your auto
 - Pulsing Green reverb level display
 - Depth control
 - Time Delay control
 - Tape monitor
 (Tape Monitors can be used with Tape / Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc) Dubbing can be used with CDR (CD recorders) units)
 - -6dB attenuator on rear panel
 - One un-switched AC convenience jack located on the back rated at 100 Watts
 - 
"WORLD AC POWER"™  50 / 60 cycles there is a 110V, 120V, 220V & 240V selector for use anywhere in the world!
 

Specs:
Input Sensitivity / Impedance: 150mV / 150Ω @ 1kHz (@ 1kHz /  'Depth' set @ '0')
Output Sensitivity / Impedance:
150mV / 150Ω @ 1kHz (@ 1kHz /  'Depth' set @ '0')
Maximum Input Level: 2000mV (2V) (@ 1kHz /  'Depth' set @ '0')
Frequency Response: 5Hz-70kHz ± 1dB (w/ 'Depth' set @ '0')
Reverb Time (effect 1): 0-3 Sec @ 400Hz
Reverb Time (effect 2):
25-100mS @ 400Hz
S/N Ratio: 90dB
(@ 1kHz / 1V input & 'Depth' set @ '0')
THD: 0.05%
(@ 1kHz / 1V input & 'Depth' set @ '0')

Again, we
have completely gone through it cleaning all pots and switches. All functions tested perfectly. Looks and sounds great! Measures 16.5" wide x 4" high x 13" deep and weighs 10 lbs unpacked. Includes our standard 30-day limited warranty!
 PIONEER SR-303
 Cond. 8.5++

 $279.00

 

 
Note: These units are really impressive when paired up, using one unit for reverb and one for some slight "slap-back" delay. While both effects are available on each unit, it's only one at a time. With two units you can get the full "LIVE" effect, just like in pro-audio systems!
 

 

-


AUDIO TIMERS

 



NEW ADDITION 2/4/11
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VINTAGE 
PIONEER

 AUDIO TIMER
  
        DT-570 DT570
 Circa 1981-82
 Made in Japan 
   "WORLD AC POWER"
 
for sale
 Pioneer DT-570 Audio Timer. These were originally designed for setting your system to record scheduled FM radio shows and Album rock. They also can be used to turn your system into a Super-Hi-Fi Alarm clock radio and / or just as the ultimate and really cool digital clock.
This is from a collection of these that took us a long time to amass. Many of these will erratically change / advance the time after they've been on for 1 or 2 hours. This is one of the few out of the many we get that keeps time perfectly and was checked over a 1 week period. Entire unit was disassembled and cleaned inside and out, including the internal switches.  All functions test perfectly. This is the one with the Aqua Blue Fluorescent digital readout and black face plate. Use it to turn on most anything with a latched or mechanical power switch. Will switch up to 1200 watts via dual AC outlets. Unit looks near new and works great! Clock memory is volatile at power outages. Measures 16.5" wide x 5.5" deep and 2" high and weighs 4 lbs unpacked. Includes our standard 90 day limited warranty.

 PIONEER
 DT-510
 Cond. 8.5
 $129.

 





NEW ADDITION 2/4/11
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VINTAGE  
FISHER

 AUDIO TIMER
        TR-3000
TR3000
 Circa 1980-81
 Made in Japan 
   "WORLD AC POWER"
 for sale
 Fisher TR-3000 Audio Timer. These were originally designed for setting your system to record scheduled FM radio shows and Album rock. They also can be used to turn your system into a Super-Hi-Fi Alarm clock radio and / or just as the ultimate and really cool digital clock.
Features:
- 24 Hour 'Military' Time (as we are located in Colorado Springs, this unit was likely brought back by a GI)
- 'Sleep Timer' function from 1:59-1 minutes
- 4 'Switched' AC outlets
- 'Auto-Dimming' senses room light level and raises readout
- Rear located, variable 'Brightness' control for the readout

 -  Semi
"WORLD AC POWER"™  50 / 60 cycles, but will need a transformer / converter for 'non-North American' AC voltages / use.

This is from a collection of these that took us a long time to amass. Many of these will erratically change / advance the time after they've been on for 1 or 2 hours. This is one of the few out of the many we get that keeps time perfectly and was checked over a 1 week period. Entire unit was disassembled and cleaned inside and out, including the internal switches. All functions test perfectly. Aqua Blue Fluorescent digital readout and black face plate. Use it to turn on most anything with a latched or mechanical power switch. Will switch up to 500 watts via 4, rear located AC outlets. Unit looks near new and works great! Clock memory is volatile at power outages. Measures 17.25" wide x 5.25" deep and 1.75" high and weighs 4 lbs unpacked. Includes our standard 90 day limited warranty.

FISHER TR-3000
 Cond. 8.5+
 $129.

 

-

TAPE NOISE REDUCTION UNITS
DBX_NX-40_Noise_Reduction_web.jpg (21656 bytes)



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PRE-OWNED
DBX
TAPE NOISE REDUCTION UNIT
NX-40 NX40
DBX TYPE II
Circa 1982-86
for sale
Great for use with Reel to Reel decks or Cassette Decks. Blows Dolby out of the water! Used in recording studios for years. Gets rid of tape hiss. Period! Will hook to any quality component system & / or analog studio deck. Will also accept signals from those rare DBX encoded LP's. Record and Playback levels located on rear panel. This unit is in great condition. We have completely gone through and tested the unit. Looks fine, sounds and works great! Unit is narrow at 7" wide x 9" deep x 1.75" (1 rack space) tall and weighs ~3 lbs unpacked. Includes our standard 90 day limited warranty.
DBX NX-40
Cond. 8.5
$89.


 



MISC PROCESSORS

Pioneer_RG-2_Stereo_Dynamic_Range_Expander_web.jpg (49342 bytes)

Pioneer_RG-2_Stereo_Dynamic_Range_Expander_collage_.jpg (177809 bytes)   
 

NEW LISTING 9/14/11
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warranty
PIONEER
DYNAMIC PROCESSOR

       RG-2
RG2
#...673M

 "WORLD AC POWER"™
 
Circa 1982-'83

 
for sale
 
Super clean Silver face Dynamic Processor. Striking Blue Fluorescent display that pulses with the beat. Expansion depth is completely variable for custom tailoring to your tastes. This unit really brightens up your sound and makes it come Alive! These are similar to a DBX 3BX or an Aural Exciter. Rear panel includes a selectable -6db attenuator for use with pro-gear.
 
 Specs:
 Dynamic Expansion:
4, 7, 10, 13, 16 dB
 Attack Time: 0.3 mS
 Release Time: 120 mS
 S/N Ratio: 100 dB
 THD: 0.05%

 
 True
 " WORLD AC POWER"™ 50 / 60 cycles and there is also a 110V, 120V, 220V & 240V selector for use anywhere in the world! 100 watt, un-switched AC convenience outlet is also on the rear panel. We have completely gone through it cleaning all pots and switches. Both the Tape Monitor, Process and Attenuation switches have their locks intact, unlike most of these we get (by the way, we do have new replacements in stock if you have one that has switches that no longer lock). Looks and sounds great! Includes a copy of the owners / instruction manual. Measures 16.5" wide x 4" high x 13" deep and weighs 10 lbs unpacked. Includes our standard 90-day limited warranty!
 PIONEER RG-2
 Cond. 8.5+

 
$239. (C)
J.L.

 



 

 

 




NEW LISTING 7/2/10
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PRE-OWNED

MONSTER
"POWERCENTER"
              HTS-2500 MKII
HTS2500 MK II

AC POWER CONDITIONER / SURGE PROTECTOR

for sale
We have just had our tech go through this unit. When it came in it had the Monster 'death beep' as most used one's do. He was able to

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NEW ADDITION 5/27/11
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VINTAGE
JVC
GRAPHIC EQUALIZER EQ

        SEA-80
SEA80
W/ MICROPHONE
#...4756
STEREO OCTAVE 10 BAND

Circa 197
9-8
3
  
"WORLD AC POWER"

MIJ

SOLD 6/29/11

Unit was disassembled extensively for restoration / reconditioning. All toggle switches painstakingly 'triple' cleaned. Linear faders still clean and retain their 'smooth' feel. Display level pot cleaned extensively. While the original pilot lamps was working, we replaced it with a fresh unit. International 'World AC Power' selector set to correct voltage for North America. We then tested both channels with a test tone and O-scope, analyzing both channels with and without each independent effect. It was then cleaned inside and out, then polished to near new look.
 Unit is clean both cosmetically and sonically. Looks and sounds great! Very 'musical' sounding. Check out the S/N ratio below...
 
______________________________

Great design, build quality with no-excuse sonic quality and very easy to use. The JVC 10-band stereo, graphic EQ w/ Pink Noise generator and RTA. This combined with an analyzer mic allows perfect adjustment for your speakers / room to 'True Flat'.
Other features include:

 - One Octave Graphic EQ
 - 10-Band, Graphically controlled frequencies per channel
  - +- 12dB Cut / Boost (most do only 10 dB)
 - 10 frequency centers are as follows (starting at the low-end):
 31.5Hz - 63Hz - 125Hz - 250Hz - 500kHz - 1kHz - 2kHz - 4kHz - 8Hz & 16kHz.
- Pink Noise Generator built-in w/ selectable L or R or L+R output
- RTA (Real Time Analyzer) for visually monitoring and adjusting room acoustics w/ 'Memory Hold'
- Left and Right selectors for RTA
- RTA level adjust
- 1/4" RTA mic input

  - LONG 70mm Linear faders utilizing super quality potentiometers

 
- True Tape monitor with both RCA and DIN I/O's. (Tape Monitors can be used with Tape / Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc) Dubbing can be used with CDR (CD recorders) units)
 
 - SEA EQ 'Record' function, for imprinting EQ curve to recordings
  - EQ defeat / bypass / -6dB pad
- Externally accessed protection fuse

- Dual AC convenience jacks located on the back, one 'un-switched' and one 'switched'' rated at a total of 200 Watts

 - 
"WORLD AC POWER"™  50 / 60 cycles there is a 110V, 120V, 220V & 240V selector for use anywhere in the world!
 
Original Specs:
 
 # Channels: 2 (stereo)
 # Bands: 10
 # Cut / Boost dB's: 12±
 Max Output (RMS V): 6

 THD: 0.003% @ 1k and @ rated output
 IMD: 0.003% @ 1k and @ rated output w/ all faders set to '0'
Gain: 0 dB on 'Defeat' mode

 Frequency Response of electronics: 10-100,000Hz
 S/N A-weighted: 118 dB!!!
 Pink Noise output level: 50mV RMS
 Input Impedance: 47k Ohms
 Output Impedance: 100 Ohms

This is a great looking and performing EQ and is built using super quality, de-tented linear controls  with a full 70mm of throw! Again, we
have completely gone through cleaning it, refurbishing  & checking all functions. All controls and switches cleaned for worry-free service. VERY well built, super clean (check out the THD rating), virtually NO crosstalk and sounds fabulous. Measures 17.75" wide x 12" deep x 6.25" high and weighs 17 lbs unpacked. Includes the original JVC MD-S50 'Pink Noise microphone'! Also comes with original box, packing and a copy of the users manual. Includes our standard 90 day limited warranty.
JVC SEA 80
Cond. 9+
(C)
M.R.

SOLD 6/29/11

 

 

 



NEW ADDITION 2/7/11
 (Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes)  warranty
VINTAGE
  
ADC
 
 STEREO GRAPHIC
 
 OCTAVE EQUALIZER
12 STEREO BANDS
  
"SOUND SHAPER TWO" / SS-2
SS2
(NOT MK II!)

  #...7210
 
 Circa 19
77-79
SOLD 7/7/11

  
 We have just completely gone through this unit. A thorough cleaning on this model requires most of the unit to be disassembled. All 'sealed' "EQ", Tape Monitor, and Record accessed and completely cleaned with solvent for trouble-free service. This is a time consuming process, but the best way to insure performance. All faders, flooded with multiple applications of De-Ox-Id. Both level potentiometers cleaned. New VU meter lamp installed. RCA I/O jacks scrubbed for clean connections. We injected both channels with 1kHz sine waves, and monitored switch performance on an oscilloscope with no visible issues after cleaning. Unit now tests perfectly.

Great quality, dual 10 band EQ. Built very well and made for great "sonic" performance. One of our favorite features of this model is that the RCA I/O jacks are connected using 'Point-to-Point' wiring and not soldered directly to the circuit board. Direct soldering is one of the primary 'banes' of modern electronics!!! These were one of the most sold EQ's ever made for a reason. Great sound, great looks and simple to use.

 
 
 
 Unit features:
  
- Dual 12 band, 'Octave' Graphic EQ  
- Each of the graphic controls feature a full +-12db of cut / boost (instead of the common 10 db)

 
 - Long, 55mm in throw length, high quality, linear, de-tented faders (most home units are 30 - 40mm)
- 12 frequency centers are as follows starting at the low-end:
30Hz - 50Hz - 90Hz - 160Hz - 300Hz - 500kHz - 900Hz - 1.6kHz - 3kHz - 5kHz - 9kHz & 16kHz.
- Tape Monitor (Tape Monitors can be used with Tape / Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc) Dubbing can be used with CDR (CD recorders) units)
- EQ Recording function to imprint tapes / CD's / DAT's / Hard Drive with EQ curve for playback on a car stereo or to allow for deficiencies in speakers.
- Dual analog VU meters w/ independent L & R level pots
- SLM (Sound Level Meter) access port

  - EQ bypass
- Those infamous 'Cool Chrome ADC' Rack Handles

  - An un-switched AC convenience jack located on the back rated at 200 Watts

  
Original Specs:
 
 # Channels: 2 (stereo)
 # Bands: 24 (12/channel)
 # Cut / Boost dB's: 12±
 Max Output (RMS V):
9
 THD: 0.02% @ rated output, 20-20kHz
 S/N A-weighted: 85 dB

  EQ is in great shape and looks NEW. Again, we have completely gone through this unit and tested all functions. It works and sounds GREAT! Measures 16.25" wide x 7" deep x 6.25" tall and weighs 13 lbs unpacked. Includes our 90 day limited warranty.
  ADC SOUND SHAPER TWO
  
Cond.
8
(C)
M.R.

SOLD 7/7/11

 

 



         NEW LISTING 5/13/10
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CheckMarkSmall_web.jpg (792 bytes) warranty
VINTAGE
JVC
GRAPHIC EQUALIZER EQ

        SEA-50
SEA50
#1982
STEREO OCTAVE 10 BAND

Circa 197
8-82

MIJ

for sale
Unit was disassembled for restoration / reconditioning. All toggle switches painstakingly cleaned. Linear faders still clean and retain their 'smooth' feel. While the original pilot lamps was working, we replaced it with a fresh unit. We then tested both channels with a test tone and O-scope, analyzing both channels with and without each independent effect. It was then cleaned inside and out, then polished to near new look.
 Unit is clean both cosmetically and sonically. Looks and sounds great!
______________________________

Great design, build quality with no-excuse sonic quality and very easy to use. The JVC 10-band "combined" stereo, graphic EQ. Combining the faders into stereo units, as opposed to separate left and right is so much easier to utilize for most users. One of the best built EQ's we had the pleasure to work on internally.
Other features include:

 - One Octave Graphic EQ
 - 10-Band, Graphically controlled frequencies per channel (combined stereo faders)
  - +- 12dB Cut / Boost (most do only 10 dB)

 - 10 frequency centers are as follows (starting at the low-end):
 32Hz - 63Hz - 125Hz - 250Hz - 500kHz - 1kHz - 2kHz - 4kHz - 8Hz & the last / upper band is selectable 12kHz / 16kHz / 20kHz.
  - LONG 70mm Linear faders utilizing super quality potentiometers

 
- Dual tape monitors with Tape 2 having redundant RCA I/O's on the front panel  (Tape Monitors can be used with Tape / Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc) Dubbing can be used with CDR (CD recorders) units)
 
 - SEA EQ 'Record' function, for imprinting EQ curve to recordings
  - EQ defeat / bypass

- Dual AC convenience jacks located on the back, one 'un-switched' and one 'switched'' rated at a total of 200 Watts

 
Original Specs:
 
 # Channels: 2 (stereo)
 # Bands: 10
 # Cut / Boost dB's: 12±
 Output (RMS V):
4
 THD: 0.03% @ rated output, 20-20kHz
 S/N A-weighted: 70 dB

This is a great looking and performing EQ and is built using super quality, de-tented linear controls  with a full 70mm of throw! Again, we
have completely gone through cleaning it, refurbishing  & checking all functions. All controls and switches cleaned for worry-free service. VERY well built, super clean (check out the THD rating), virtually NO crosstalk and sounds fabulous. Measures 16.5" wide x 13" deep x 6.75" high and weighs 16 lbs unpacked. Includes our standard 90 day limited warranty.
JVC SEA 50
Cond. 8.5++
$259.
SOLD 7/25/11

 

- - -
 
 

 

 


**
"(actual as measured)" refers to original test results done by Hirsch-Houck Laboratories upon test release of product when new. Current "aged" specifications / performance may of course vary from that.

 

 

POLICIES, SPECIFICATIONS, AVAILABILITY, INFORMATION
AND PRICING SUBJECT TO CHANGE  AT ANYTIME  AND
WITHOUT PRIOR
NOTICE
and changes may not be posted to web immediately
.
 

20-30% restock fee / service charge applies to all returns for refund depending on item specifics & / or individual distributor / drop shipper policies.
See our "
Warranties / Returns" page via the link below for more details.

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