From: Brian Ketterling (tweel8502_at_hotmail.com)
Date: 2003-02-07 00:55:37
>From: Rainer Buchty <buchty@cs.tum.edu>
>Reply-To: cbm-hackers@cling.gu.se
>To: "'cbm-hackers@cling.gu.se'" <cbm-hackers@cling.gu.se>
>Subject: RE: amplified speakers
>Date: Thu, 6 Feb 2003 12:31:23 +0100 (CET)
>
> > Why, if I may ask? The capacitors don't improve anything and just add a
> > frequency-dependant resistor to the circuit.
There are all sorts of audio amps -- some have a DC bias on the input, and
in some cases if you direct-couple the two inputs they can blow out. That's
why I was wondering about (DC blocking) capacitive coupling. There are also
amps that will blow out if you AC-couple the two inputs, which is why I
asked about an active splitter. I've never messed with PC speaker systems,
other than to plug one into a PC sound card, and I was hoping someone with
practical experience could advise me. Hopefully, the amp isn't too cheap
and is reasonably forgiving.
Realistically, in the audio range I don't think there'd be much roll-off if
I used capacitors, particularly polypropylene ones, which are generally used
only in high-end audio gear (mylar being used in cheaper equipment).
>If you make them slightly different you get somewhat a "widened" signal
>which sounds a bit more more like a true stereo signal as opposed to "mono
>coming from two speakers".
Or use a R-C or L-C filter on one channel?
Thanks to all!
-- Brian
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