home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: rec.audio
- Path: sparky!uunet!paladin.american.edu!news.univie.ac.at!hp4at!mcsun!news.funet.fi!ousrvr.oulu.fi!tnclus.tele.nokia.fi!lauusitalo
- From: lauusitalo@tnclus.tele.nokia.fi
- Subject: Re: Subwoofer amplification
- Message-ID: <1992Dec21.111548.1@tnclus.tele.nokia.fi>
- Lines: 26
- Sender: news@ousrvr.oulu.fi
- Organization: Nokia Telecommunications.
- References: <42728@sdcc12.ucsd.edu>
- Date: Mon, 21 Dec 1992 09:15:48 GMT
-
- In article <42728@sdcc12.ucsd.edu>, mtrostle@sdcc13.ucsd.edu (Mark Trostler) writes:
- > I have a 12V/2.5amp power supply that I'm going to use to run a 140
- > watt amp (running in mono mode). I want said amp to power a 12"
- > subwoofer, but I have to choose either 'left' or 'right' in mono
- > mode to send to the subwoofer - does the subwoofer get only one
- > channel? Also, since the amp is only powering the subwoofer, do I
- > need any sort of crossover? If so, does it go before or after the
- > amp? Finally, what should the volume/dimensions of the subwoofer
- > enclosure be? I know there's a volume equation somewhere, but have
- > no idea what it is...
- > Thanx a zillion...
- > Mark
-
- You do need an LP filter. You should use active filter before amp. This
- filter sums both channels. For 12" element you need about 100 litre
- box.
-
- And as said before that supply needs reconsideration. For full swing
- you need about +-24V supply with enough current capacity.
-
- Lauri
-
- --
- -------------------------------------------------------------------
- Lauri Uusitalo I "Life is hard,
- lauri.uusitalo@ntc.nokia.com I then you die..."
-