Ampzilla 1

flashmajik · 5th February 2009, 03:45 PM

I have The first ampzilla 400w. I lost the a side and took it to a old timer that works on old stuff but he could not find the right transistors. I am looking for the cross reference for these transistors and if possible the transistors. If any one can help, it would mean a lot because I realy like this unit.
Thanks,
Flashmajik

llwhtt · 5th February 2009, 04:36 PM

I have a fairly complete cross reference for the GAS part #s, which ones do you need?

Craig

flashmajik · 5th February 2009, 09:32 PM

athsnks for sending a note so fast, the man working on the amp told me needed a cross referance for as many as possible because he was not sure just how many I may need, he said the GAS 105's for the driver for sure. Is there a chance I could bye the list? Thank you so much for your help so far.
Flashmajik

llwhtt · 5th February 2009, 11:55 PM

I bought a whole set of GAS schematics and info from David Riddle, an ex GAS employee I think. He's always on ebay but you can buy direct from the company here in SoCal, 1-800-544-3746. After drawing my own schematic for a Zilla IIa back in the early 90s this packet of info is most welcome. I now have a Zilla IIa, Son, Thalia and Thaedra II and the schematics!!!!

Craig

flashmajik · 6th February 2009, 01:26 AM

Thanks for the info on the scamatics, do you have the cross referance for the tranzisters, Gas-105 for the drivers. And thanks again for your time.

llwhtt · 6th February 2009, 01:59 AM

I'll dig it up tonight and get it to you asap. The cross reference list was part of the GAS package, there 2 or 3 pages of it.

Craig

llwhtt · 6th February 2009, 06:43 PM

The cross for the OLD GAS #105 is 2N3584, TO66 case. The NEW GAS #105 crosses to a 2SD424, TO3 case. The mates (PNP) are #106, 2N6421 and 2SB554. Since your Zilla is an old one you are probably going to need the 2N3584. There you go, watch out for counterfeits.

Craig

flashmajik · 7th February 2009, 07:09 AM

Thanks again for all your help. I'll get ahold of so-cal and we should be golden. Is there a place that you would reccomend to get the parts?
Thanks Flashmajik

llwhtt · 7th February 2009, 03:34 PM

Those numbers are around, try googling. The hard part is finding the Motorolas, which is the first choice. The 2N3584 seems to be easier to find, the 2N6421 not so easy. While repairing a Crest amp I found they used the same pair so I ordered a bunch of them, they are NOT Motorola, they're MOSPEC. I ended up with 2N3583s and 2N6211s, have not used any so don't know about quality.

Craig

5th February 2009, 09:32 PM	#3
flashmajik diyAudio Member Join Date: Feb 2009	ampzilla 1 athsnks for sending a note so fast, the man working on the amp told me needed a cross referance for as many as possible because he was not sure just how many I may need, he said the GAS 105's for the driver for sure. Is there a chance I could bye the list? Thank you so much for your help so far. Flashmajik

6th February 2009, 01:26 AM	#5
flashmajik diyAudio Member Join Date: Feb 2009	ampzilla 1 Thanks for the info on the scamatics, do you have the cross referance for the tranzisters, Gas-105 for the drivers. And thanks again for your time.

7th February 2009, 07:09 AM	#8
flashmajik diyAudio Member Join Date: Feb 2009	ampzilla 1 Thanks again for all your help. I'll get ahold of so-cal and we should be golden. Is there a place that you would reccomend to get the parts? Thanks Flashmajik

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5th February 2009, 03:45 PM	#1
flashmajik diyAudio Member Join Date: Feb 2009	Ampzilla 1 I have The first ampzilla 400w. I lost the a side and took it to a old timer that works on old stuff but he could not find the right transistors. I am looking for the cross reference for these transistors and if possible the transistors. If any one can help, it would mean a lot because I realy like this unit. Thanks, Flashmajik

5th February 2009, 04:36 PM	#2
llwhtt diyAudio Member Join Date: Jun 2008	I have a fairly complete cross reference for the GAS part #s, which ones do you need? Craig

5th February 2009, 11:55 PM	#4
llwhtt diyAudio Member Join Date: Jun 2008	I bought a whole set of GAS schematics and info from David Riddle, an ex GAS employee I think. He's always on ebay but you can buy direct from the company here in SoCal, 1-800-544-3746. After drawing my own schematic for a Zilla IIa back in the early 90s this packet of info is most welcome. I now have a Zilla IIa, Son, Thalia and Thaedra II and the schematics!!!! Craig

6th February 2009, 01:59 AM	#6
llwhtt diyAudio Member Join Date: Jun 2008	I'll dig it up tonight and get it to you asap. The cross reference list was part of the GAS package, there 2 or 3 pages of it. Craig

6th February 2009, 06:43 PM	#7
llwhtt diyAudio Member Join Date: Jun 2008	The cross for the OLD GAS #105 is 2N3584, TO66 case. The NEW GAS #105 crosses to a 2SD424, TO3 case. The mates (PNP) are #106, 2N6421 and 2SB554. Since your Zilla is an old one you are probably going to need the 2N3584. There you go, watch out for counterfeits. Craig

7th February 2009, 03:34 PM	#9
llwhtt diyAudio Member Join Date: Jun 2008	Those numbers are around, try googling. The hard part is finding the Motorolas, which is the first choice. The 2N3584 seems to be easier to find, the 2N6421 not so easy. While repairing a Crest amp I found they used the same pair so I ordered a bunch of them, they are NOT Motorola, they're MOSPEC. I ended up with 2N3583s and 2N6211s, have not used any so don't know about quality. Craig

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