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~misfit~[_3_] ~misfit~[_3_] is offline
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Default Amplifier for passive subwoofers

Once upon a time on usenet Peter Wieck wrote:
On Friday, August 10, 2018 at 4:28:14 PM UTC-4, Howard Stone wrote:
I use Gradient subwoofers with Quad ESL 63 electrostatic speakers.

Can anyone recommend an amp which is particularly good for this job?
One that is safe to use (ie with DC protection built in.)

And in theory available in the UK for a second hand price around £500

http://www.regonaudio.com/Gradient%2...Subwoofer.html


With respect, that is a hard question to answer other than "about
anything will do". So, a few questions first:

a) Efficiency of the sub-woofer?
b) Tube or solid-state?
c) Generally, on the spectrum between Heavy Metal and Full Classical
Orchestra, where do you fall?
d) New, used, or vintage?

Keep in mind that amplification is the least complicated part of your
(any) system, and about any reasonably well designed device will work
fine. Variations on that theme will depend on speaker efficiency,
type of music you (mostly) listen to, and whether you want tube or
solid-state. Note that tube amps using output transformers have DC
protection automagically.


Peter Wieck
Melrose Park, PA


Hi Peter, a quick question if I may? I bought four second-hand ex-shopping
centre rack mount 100w PA amps cheaply a while back, mainly for the J49/K135
output devices. They use output transformers of a similar size to the main
PS transformers. (Turns out I actually like the way the whole amplifier sans
output transformer sounds so am using those in a project.) I tried to find
out a bit about how this sort of system works but had no luck. Can you offer
any help?

I was wondering if there was any way I could re-use or re-purpose the output
transformers. They're a big hunk of silicone steel and copper, seems a waste
to just throw them in landfill.

Cheers,
--
Shaun.

"Humans will have advanced a long, long way when religious belief has a cozy
little classification in the DSM*."
David Melville (in r.a.s.f1)
(*Diagnostic and Statistical Manual of Mental Disorders)