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- Newsgroups: rec.audio
- Path: sparky!uunet!paladin.american.edu!howland.reston.ans.net!news.ans.net!nynexst.com!rsilvers
- From: rsilvers@nynexst.com (Robert Silvers)
- Subject: Re: Do I really need 200W?
- Message-ID: <1992Dec29.175257.16151@nynexst.com>
- Sender: news@nynexst.com (For News purposes)
- Organization: Nynex Science and Technology
- References: <1992Dec14.132035.2420@discus.technion.ac.il> <7009@otc.otca.oz>
- Date: Tue, 29 Dec 92 17:52:57 GMT
- Lines: 28
-
- In article <7009@otc.otca.oz> brendan@otc.otca.oz (Brendan Jones) writes:
- >
- >As to how many watts you need - I reckon not many. I have a 25 W per channel
- >true RMS class A power amplifier, and a comfortable listening volume is 2 to 3
- >out of 10.
- >
- >Turning it up to 4 to 5/10 is *very* loud, and anything over 5 gets to
- >seriously annoy the neighbours :-) It's only been to 10 once (briefly) at a
- >rather raging party I once held - it started to sound a little distorted at
- >that level, but it may have been my ears 'cause it was bloody loud!
-
- Amps are usually designed to produce max output on 5. The only
- reason to go past this is when you are listening to a weak source such
- as an improper recording.
-
- >
- >So from this I think 25 W RMS is plenty, but it also depends on the other
- >specs for the amp and the specs for the speakers you're connecting to it.
-
- This depends on the efficiency of your speakers. I have KEF 104s
- which (I think) produce 89 DB with 1 Watt input when measured 1 meter away.
- Yesterday I hooked up a power meter to my output and measured the power at
- a generous listening level. The Amp was putting out about 13 watts average.
- Once in a while it would hit 20, maybe 30. This tells me that something
- like a 40 watt NAD unit, which still has headroom left at 40 watts, would
- be excellent for most everyone.
-
- --Rob.
-