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- Path: sparky!uunet!news.mentorg.com!sdl!sdl!usenet
- From: garyg@warren.mentorg.com (Gary Gendel)
- Newsgroups: sci.electronics
- Subject: Re: 12V Power Amplifier Design
- Date: 28 Jan 1993 17:16:56 GMT
- Organization: Mentor Graphics Corp. -- IC Group
- Lines: 23
- Distribution: world
- Message-ID: <1k94e9INNmmo@sdl.Warren.MENTORG.COM>
- References: <LANCER.93Jan27020811@wpi.WPI.EDU>
- Reply-To: garyg@warren.mentorg.com
- NNTP-Posting-Host: garyg.warren.mentorg.com
-
- In article 93Jan27020811@wpi.WPI.EDU, lancer@wpi.WPI.EDU (Stephe Lewis Foskett) writes:
- >>>>>> "tapscott" == Peter Tapscott <tapscott@parc.xerox.com> writes:
- >tapscott> You have to be cautious about accepting wattage ratings from
- >tapscott> car amps. The manufacturers frequently exceed the laws of
- >tapscott> physics with their ratings.
- >
- >You mean my new Sparkomatic "Hi-Power" amp doesn't really deliver 100
- >watts per channel?
-
- Sorry I missed the start of the thread. Back in the late 70's I owned a pair
- of surface mount, bi-amplified car speakers. They came with an amplifier that
- supplied 80W per channel in a 8X12X4 box. Many years later it died and I took
- a look inside. There was a DC to DC converter to provide the high voltage that
- was required. Each amp had 4 high-power transistors in parallel (with some
- stabilizing resistors) for the output stage. Turned up, I could still hear the
- music comfortably, moving at 60 MPH with the top down. I still miss the quality
- of the sound from this speaker/amp combination from ADS. I also believe their
- 160W claim, though I never cranked them full up.
-
- Gary
-
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-