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Old 17th August 2007, 10:01 AM   #1
dex13 is offline dex13  Bulgaria
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Question About the real power of an amplifier.

Hi all,

Some time ago I bought a subwoofer speaker Hertz HX 200, 4ohm, 8". It was stated 300W continuous power, 600W peak. I measured it at 50Hz and I don't think it can handle more than 25 Volts RMS (35V peak), which is about 150W RMS.

Now I look at the amplifiers and the cheapest one (Blaupunkt GTA-280) offers "RMS power (4 ohms) 1 x 210 W". Hm... what should I expect from this amplifier? Will it be too much for this speaker or these 210W RMS are not RMS calculated in this way?

Please excuse my bad English, and thanks in advance for your advices.
Regards.
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Old 17th August 2007, 10:33 AM   #2
Did it Himself
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Look if it's continuous rating at 20-20kHz and what battery voltage. Being Blaupunkt it's probably quite accurate rating.
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Old 17th August 2007, 11:44 AM   #3
dex13 is offline dex13  Bulgaria
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I found only this in the manual: RMS power in accordance with CEA-2006 (< 1% dist. / +14.4V)
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Old 17th August 2007, 12:15 PM   #4
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That is a good sign.
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Old 17th August 2007, 12:23 PM   #5
acid_k2 is offline acid_k2  Italy
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An ampli rated 210W RMS at 14.4V can drive a 8" 300W speaker.

For "quality" audio listening, trim ampli output at normal-low level....
For "boom boom" audio listening, trim ampli output at more high level, and pray your subwoofer doesn't fire...
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