home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: rec.audio
- Path: sparky!uunet!stanford.edu!nntp.Stanford.EDU!ianchan
- From: ianchan@leland.Stanford.EDU (Ian Hin Yun Chan)
- Subject: Re: PROBLEM: Hooking up my system
- Message-ID: <1992Dec15.083803.6589@leland.Stanford.EDU>
- Sender: news@leland.Stanford.EDU (USENET News System)
- Organization: DSG, Stanford University, CA 94305, USA
- References: <Uf_tIXu00iV202J=5T@andrew.cmu.edu> <11900009@hpmwnpd2.sr.hp.com>
- Date: Tue, 15 Dec 92 08:38:03 GMT
- Lines: 27
-
- In article <11900009@hpmwnpd2.sr.hp.com> allana@hpmwtd.sr.hp.com (Allan Armstrong) writes:
- >>I have a pioneer vsx-4900s receiver and cerwin vega dx-7 speakers.
- >>Now the problem is that cerwin vega is rated at 4 ohms and the pioneer
- >>receiver is to be used at 8 ohms. I fear that hooking up these would
- >>result in some damage to the receiver. How can I fix this problem?
- >>Should I use my advents to hook up to my receiver along with cerwin
- >>vegas? Any suggestions would be appreciated.
- >
- >What you need is a 2:1 impedance transformer. Rather than spending big
- >bucks for one of these, you can make one yourself. Take a cylindrical
- >object such as an empty toilet paper roll or a pencil and wrap some wire
- >around it. Take a piece of wire with two turns and connect it to the 8
- >Ohm receiver. Use another piece of wire with one turn and connect it to
- >the 4 Ohm speaker. Use some quality cement such as Elmer's to keep the
- >wires from coming unwound. Viola!
- >
- >;-)
- >
- >Allan
-
- Errr... don't you think such a transformer would be grossly inefficient?
- A normal 110V to 220V transformer would be better (or anything that has a
- 1:2 ratio). The amp should plug into the higher voltage side of the
- transformer. My only worry is what would happen at low frequencies. Might
- the transformer present an even lower impedence at low frequencies?
- - Ian
-
-