HU clipping

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xTimx

Copper - Posts: 354

Joined: September 13, 2002

Location: Canada

Posted: June 20, 2004 at 7:43 PM / IP Logged

is there a way of finding out a HU's clipping or sensitivity from using a multimeter? but this has nothing to do with the amps. just the HU. my HU is a jvc 1150.

xTimx

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shaman

Copper - Posts: 70

Joined: May 01, 2004

Location: United States

Posted: June 21, 2004 at 1:16 AM / IP Logged

Well no, you would need to see the wave form to tell if it was clipping. You could look at the rated output (for RCA's I take it) and see if you are exceeding that with a good mulitmetter (one that will give you RMS) and some test tones. That would not really tell tou if there is a clipping condition or not.

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shaman

Copper - Posts: 70

Joined: May 01, 2004

Location: United States

Posted: June 21, 2004 at 1:16 AM / IP Logged

Well no, you would need to see the wave form to tell if it was clipping. You could look at the rated output (for RCA's I take it) and see if you are exceeding that with a good mulitmetter (one that will give you RMS) and some test tones. That would not really tell you if there is a clipping condition or not.

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kgerry

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Joined: February 07, 2004

Location: Saskatchewan, Canada

Posted: June 21, 2004 at 10:17 AM / IP Logged

the ideal way would be with a scope or scopemeter....but as far as just looking at a voltage, no not reliably or accurately

Kevin Gerry

Certified Electronics Technician

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DYohn

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Joined: April 22, 2003

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Posted: June 21, 2004 at 10:33 AM / IP Logged

xTimx wrote:

is there a way of finding out a HU's clipping or sensitivity from using a multimeter? but this has nothing to do with the amps. just the HU. my HU is a jvc 1150.

Actually I would have to say no, you can't tell if an amp is clipping simply using a multimeter. You can assume it is if the output voltage stops increasing as the volume is turned up, but you really cannot tell.

An easy way to find the clipping point is to listen for it. Here's one technique. Get a test tone CD with a 1000Hz (1KHz) tone recorded at 0db. (Turn your amplifier gain all the way down if yu are using external amps.) Wear hearing protection. Play the 1KHz test tone and slowly increase the volume on your head until you can hear the tone change. It will go from being "clear" to being "shrill." This is the head unit clipping point and you should never, ever turn the head up past this point. It is also the maximum output for setting amplifier gain.

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HU clipping

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