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Old November 4th 07, 09:06 PM posted to uk.rec.audio
Trevor Wilson[_2_]
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Posts: 166
Default Impedance and amps


"Doki" wrote in message
...
I'm looking at fitting some speakers I have lying around to my car. The
thing is, car headunits usually have wattage quoted for with 4ohm
speakers. The speakers I have at 6 ohm. Is this going to lead to a
noticeable lack of volume running a boggo head unit that nominally throws
out 25-30WPC RMS, or am I just going to lose the top end of the range of
clipped distorted car radio horribleness?


**No.

BTW: The vast majority of head units deliver around 4 Watts or 16 Watts
continuous (aka: RMS) per channel. Only units which have internal inverters
can deliver more power than this. Usually, this would be an external power
amp. Manufacturer who claim more are usually telling fibs. The 4 Watt rated
units (rare today) use a standard push pull amp. The 16 Watt units use a
bridged output stage.

Trevor Wilson