The real "Gaincard" parts

The one · 25th August 2005, 11:42 PM

Many have seen those pictures which purportedly show the insides of the real(original) Gaincard. They are some funky looking parts. Not particularly impressive looking. Which leads me to my story. I spent the other morning going to a electronic supply store in order to build the inverted version of the gainclone. On a total whim, I ducked into a thrift store and found an early eightes technics tuner/receiver made in japan. It was metal and heavy and had a killer heatsink and ei transformer. It was $10 so I bought it basically to use the heatsink and maybe possibly the transformer. Well turns out, that the amp is littered with exactly, and I mean exactly, the same resistor used in the gaincard for the feedback loop. So, I quickly locate 2 22k resistors and desolder them. Well, gentlemen when I installed them in my nigc the thing took off! A perfect match! Long and short of it is I strongly believe that those parts in the original, are tremendously synergistic for the circuit. I've tried alot of different parts in the amps. I think the 47labs guy has a few tricks up his sleeve.

ofb · 26th August 2005, 06:44 AM

Quote:

Originally posted by The one
eightes technics tuner/receiver made in japan

which one?
http://www.vintagetechnics.com/receivers.htm

fwiw, nothing like that in the SA-303, or yamaha cr-240 of the same era.

The one · 26th August 2005, 11:53 AM

Jeez, I had no idea it was worth any money. It isn't any longer

It is the SA-450.

ofb · 26th August 2005, 08:03 PM

Quote:

Originally posted by The one
Jeez, I had no idea it was worth any money.

MSRP is Manufacturer's Suggested Retail Price; that $320 was back in '84. ten bucks at a thrift store sounds about right.

The one · 27th August 2005, 04:23 AM

OOPs. I missed the msrp part. Yeah, I'd never heard of technics being sought after.

ofb · 27th August 2005, 07:20 AM

technics is panasonic's upscale line. they built some very expensive kit.

old brochures

Panelhead · 27th August 2005, 02:07 PM

Quote:

Originally posted by ofb
technics is panasonic's upscale line. they built some very expensive kit.

old brochures

Can you post a pic of these old resistors. I love using AB carbon comps, but they do not work in every application.
Are these generic metal films?

George

reMC · 6th November 2005, 04:08 PM

Hi, any idea which brand the resistor is from?

Samuel Jayaraj · 6th November 2005, 04:33 PM

Post pictures!!

Nuuk · 7th November 2005, 02:47 PM

Do they look anything like the input resistor in the picture below?

25th August 2005, 11:42 PM	#1
The one diyAudio Member Join Date: Mar 2005 Location: East coast	The real "Gaincard" parts Many have seen those pictures which purportedly show the insides of the real(original) Gaincard. They are some funky looking parts. Not particularly impressive looking. Which leads me to my story. I spent the other morning going to a electronic supply store in order to build the inverted version of the gainclone. On a total whim, I ducked into a thrift store and found an early eightes technics tuner/receiver made in japan. It was metal and heavy and had a killer heatsink and ei transformer. It was $10 so I bought it basically to use the heatsink and maybe possibly the transformer. Well turns out, that the amp is littered with exactly, and I mean exactly, the same resistor used in the gaincard for the feedback loop. So, I quickly locate 2 22k resistors and desolder them. Well, gentlemen when I installed them in my nigc the thing took off! A perfect match! Long and short of it is I strongly believe that those parts in the original, are tremendously synergistic for the circuit. I've tried alot of different parts in the amps. I think the 47labs guy has a few tricks up his sleeve.

6th November 2005, 04:33 PM	#9
Samuel Jayaraj diyAudio Member Join Date: May 2001 Location: Bangalore, India	Post pictures!! __________________ Sam

7th November 2005, 02:47 PM	#10
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	Do they look anything like the input resistor in the picture below? __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

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26th August 2005, 11:53 AM	#3
The one diyAudio Member Join Date: Mar 2005 Location: East coast	Jeez, I had no idea it was worth any money. It isn't any longer It is the SA-450.

27th August 2005, 04:23 AM	#5
The one diyAudio Member Join Date: Mar 2005 Location: East coast	OOPs. I missed the msrp part. Yeah, I'd never heard of technics being sought after.

27th August 2005, 07:20 AM	#6
ofb diyAudio Member Join Date: Oct 2002 Location: canada	technics is panasonic's upscale line. they built some very expensive kit. old brochures

6th November 2005, 04:08 PM	#8
reMC diyAudio Member Join Date: Nov 2004 Location: Netherlands	Hi, any idea which brand the resistor is from?

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