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#1
08-24-2006, 12:13 AM
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High Volume Clipping
I have an Alpine TDM-7574 in my 92 w124 and it is clipping at high volume. What causes this and how can I fix it?
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1999 E300DT (131,800) 154,000 Black on Black  SOLD2006 CLK 500 coupe Capri Blue on Grey (zoom,zoom)  47,000mi 04 VW TDI Passat 80,000mi (Techno) How to eliminate oil dependency through market-driven approaches. “We could cut oil use in half by 2025, and by 2040, oil use could be zero,” The Sound of Diesel Speed Ode to MB 
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#3
08-24-2006, 11:22 AM
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Correct, clipping is usually caused by running the amp to hard; to where it creates harmonic distortion.
What you ned to do is to find the true RMS power of both your speakers and Amp, and at what Ohm they are wired for. You want atleast 1.5x the RMS power of the speakers for an amp. Also look at your amp's THD rating, as it should be below 1%THD (a decent amp will have .01%) and S/N (rignal to Noise) ratio (the higher the better, with 101db s/n being what most top-end gear are)
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-1983 VW Rabbit LS Diesel (5speed, VNT/Giles build)
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#4
08-31-2006, 03:30 PM
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Just like Monomer said, the amp is being driven too hard. Your amp feeds the speakers with alternating current. A sine wave. So when you are driving your amp past what it is capable of, you are essentially chopping off the peaks of your sine wave...clipping. Which causes nasty sound. If you are only using deck power, something as small as a 25x2 amp will make a huge difference for you, heck, even go 50x2 for giggles...just make sure to set your gains correctly (as low as possible, really, and if running full range, have a highpass filter (to block low frequencies) to keep from damaging your speakers. Alot of amps nowadays have some sort of onboard processing.
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