ZR-1 Net Registry Forums - View Single Post - Alternative source for cheap functional Bose speaker amplifiers

scottfab · 05-28-2013

Really good stuff.
Paying $7 for these is a steel.
And it is likely since they are 95 and newer vintage that the
fault found in the mid to late 80s caps will not be there.
There was a world wide defect of capacitors in the 80s that
was well understood by anyone in the electronics industry.
They found there way into the Bose amps.

The main problem with the caps is related to temperature.
They were rated at 85deg C and that was a lie and even at 85deg that
it was too low.
When using new caps the you want to find >100deg C.
@ $7 per amp why bother.
Next time I am by a U-pull it I'm going to look for some spares.
Good find indeed.

05-28-2013	#5
scottfab Join Date: Jan 2009 Location: Portland Oregon metro area (Washington side) Posts: 3,193	Re: Alternative source for cheap functional Bose speaker amplifiers Really good stuff. Paying $7 for these is a steel. And it is likely since they are 95 and newer vintage that the fault found in the mid to late 80s caps will not be there. There was a world wide defect of capacitors in the 80s that was well understood by anyone in the electronics industry. They found there way into the Bose amps. The main problem with the caps is related to temperature. They were rated at 85deg C and that was a lie and even at 85deg that it was too low. When using new caps the you want to find >100deg C. @ $7 per amp why bother. Next time I am by a U-pull it I'm going to look for some spares. Good find indeed. __________________ Scott Vett owner since 1979._It's about the car and the people Last edited by scottfab; 05-29-2013 at 11:12 AM.