Re: Effect of Variac on Monoblocks

A new stock DH-200 or 220 doesn't sound dead.

Science has the potential to have all the answers. It doesn't follow
that is has all the answers currently.

I think YOU think you know what you're talking about, but really
don't. And I suspect you know this.


Wink wrote:

Why did you change the caps?
When the stock Hafler 10 kufd Sangamos started to die several years
ago, I replaced them with Musical Concepts 80V, 27 kufd LC-200s made
by Chemi-con, and noticed immediately a deadening of the sound.

Simple reason for that, it's how the amp originally sounded when the Sangamos
were 'fresh'.

As caps 'die', their capacitance reduces and this affects the regulation of the
power supply and consequently can influence how it treats large dynamics.

All you did was restore the amp to 'original condition' but didn't like the
result.

If perhaps you'd fitted 3300 or 4700uF caps in place of 10,000uF you may have
preferred how it sounded.

Science DOES have the answers you see, but you really do need to know your onions
and have LOTS of experience to understand this stuff. Random component
substitution is one of the dumbest things out there but a lot of crooks make good
money out of you from it.


Graham

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