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Old 22nd July 2010, 01:59 AM   #1
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Default Hello

I just got a BMW CD43 head unit (I think made by Blaupunkt) to replace the old cassette head unit. I also bought a couple of ESX Q120 4-channel amps. The amps are designed for RCA or balanced inputs and the head unit has just four-channels of speaker wire outs so I'm looking at the Arc Audio SRI or the Audio Control LC7 (Line Output converters).

I've already installed four Focal 130CVX Polyglass 5.25" speakers (two sets - one front and one rear).

I'll need to figure out what speakers to use for sub channels. I'm thinking two eights or two tens.

My immediate need is to find the amperage draw of the ESX Q120's so I can calculate the wire size and fuse requirements. Does anyone know where to find this data?

I know that if I multiply the number of channels of amplification by the number of RMS watts per channel, then multiply that total power figure by 2 and divide by 13.8 I should get the current draw in amperes. BUT the rated watts per channel change with the ohms of the speaker load which I don't have yet.

There must be someone who knows how much current these things draw.

Can anyone assist me please?
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Old 22nd July 2010, 03:02 AM   #2
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Hi and welcome to the forums.

You might wish to post your questions over in the car audio section. I think you'll get a better response over there.
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Old 22nd July 2010, 03:09 AM   #3
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Why thank you, which way is that?
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Old 22nd July 2010, 03:10 AM   #4
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Welcome to the forum Mr Bark

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Old 22nd July 2010, 03:23 AM   #5
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You may call me dog.
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Old 22nd July 2010, 04:06 AM   #6
Speakerholic
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OK Dog, go fetch the button near the top that say "forums" and put your paw on it. Then move the mouse (without killing it) to the spot that says "Car Audio". Click it again

Good boy! Here's a cookie.

Cheers.
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Old 22nd July 2010, 04:19 AM   #7
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I found it, but now my finger smells


Already posted over there, thanks.
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Old 22nd July 2010, 04:27 AM   #8
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Good, hopefully you'll get the answers you need. A lot of really smart persons here.
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Old 23rd July 2010, 03:26 AM   #9
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My name is Nicole and I like to say thanks to the site owner for this great site and all the members of this forum for sharing good and useful
information to all people. I found this forum quite informative as well interested, it is really great!
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