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NNTP-Posting-Date: Thu, 28 Nov 2002 22:45:53 -0600
From: "Dave VanHorn"
References: <firstname.lastname@example.org> <email@example.com>
Subject: Re: Cheap 'n' nasty subwoofer amplifier
Date: Thu, 28 Nov 2002 23:46:40 -0500
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"Al Borowski" wrote in message
> "Dave VanHorn" wrote in message
> > > You should also be concerned about voltage, for 100W into 4 Ohms you
> > > need +/- 28 Volts output swing which is quite a lot for an op amp.
> > The LM-12 opamp will handle this quite nicely.
> so voltage issues aside, do you think I could make a decent amp using
> a single op amp, a few transistors and a handful of passives?
The LM-12 will do 35 or 40V rails, IIRC, and you won't need anything else
except a pair of gain setting resistors.
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