SX-1980 "power chips"

[calman46]

Checkout this CL posting http://boston.craigslist.org/gbs/ele/3361796018.html The seller has brand new "power chips" for the SX-1980 . Could these be the output's that are so hard to find .

 

[petehall347]

i want the 2k speakers ..

 

[kevzep]

The guy is talking complete BS, I wouldnt believe any of it........

 

[markthefixer]

well reading it charitably, since the Pioneer output transistors DO have 4 leads, the verbal shorthand is somewhat forgivable, although his work for the audio company was probably in the night maintenance section, sounds like some "resume inflation" going on.

AND I would beware his "chips", and INSIST on close up pictures of each and every one to INSURE that they are NOT USED at his exorbitant prices.

Craigslist... :nono: can damn near claim anything - caveat emptor SQUARED

 

[markthefixer]

Checkout this CL posting http://boston.craigslist.org/gbs/ele/3361796018.html The seller has brand new "power chips" for the SX-1980 . Could these be the output's that are so hard to find .

Hard to find ORIGINAL outputs are NOT required anymore to get it working to specification, EchoWars, myself and others have proved THAT.

 

[r_deming]

this guy sounds like a dick!

 

[SoCal Sam]

Clean the controls and EARN your money. What a tool.

 

[Skylab]

this guy sounds like a dick!

That's how I feel about everyone who types in all caps :nono:

 

[qguy]

Can you a provide birds eye view on how was it done - thanks

Hard to find ORIGINAL outputs are NOT required anymore to get it working to specification, EchoWars, myself and others have proved THAT.

 

[EchoWars]

http://audiokarma.org/forums/showthread.php?t=60536

 

[qguy]

Cool Nice work !!! I want one !!!

http://audiokarma.org/forums/showthread.php?t=60536

 

[qguy]

out of curiousity.. how does one destroy those original output transistors, at 270 watts per channel, I reckon the speakers will die first before the amp does.

 

[ccheath]

out of curiousity.. how does one destroy those original output transistors, at 270 watts per channel, I reckon the speakers will die first before the amp does.

Pushing too hard, overheating, low impedance speakers, shorting, etc. There are bigger speakers too.

 

[markthefixer]

Cool Nice work !!! I want one !!!

Go buy a busted SX-1980....

Then.....

http://www.audiokarma.org/forums/showthread.php?t=337619

 

[qguy]

I may not understand the answer, but I will ask the question anyways, the original output transistors had 4 legs, whereas the new one had 3, where was the 4th one derived from ?

 

[petehall347]

maybe had 2 base connections .. i dunno .. i am all ears myself ..

 

[markthefixer]

I may not understand the answer, but I will ask the question anyways, the original output transistors had 4 legs, whereas the new one had 3, where was the 4th one derived from ?

Two COLLECTOR connections.

 

[ccheath]

Not sure about 1980 but my 980 has the same transistor layout. In my SX-980, only ONE collector connection is used. Both collector pins are the same thing.

 

[anderslober]

Yes.....AFAICT........only one collector is used on the 1980 too. Check the SM. The remaining sequencing is EBC......the substitutes(On-Semi MJL4281A) are BCE..............it would be cool if they could've been sub'ed in without a slight mod.

 

[OverLoad]

Yes.....AFAICT........only one collector is used on the 1980 too. Check the SM. The remaining sequencing is EBC......the substitutes(On-Semi MJL4281A) are BCE..............it would be cool if they could've been sub'ed in without a slight mod.

CAREFULL, actually the 4 pin NEC power transistors are CBEC.