Hello

dogsbark26 · 22nd July 2010, 01:59 AM

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?

Cal Weldon · 22nd July 2010, 03:02 AM

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.

dogsbark26 · 22nd July 2010, 03:09 AM

Why thank you, which way is that?

planet10 · 22nd July 2010, 03:10 AM

Welcome to the forum Mr Bark

dave

dogsbark26 · 22nd July 2010, 03:23 AM

You may call me dog.

Cal Weldon · 22nd July 2010, 04:06 AM

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.

dogsbark26 · 22nd July 2010, 04:19 AM

I found it, but now my finger smells

Already posted over there, thanks.

Cal Weldon · 22nd July 2010, 04:27 AM

Good, hopefully you'll get the answers you need. A lot of really smart persons here.

nicoledc109 · 23rd July 2010, 03:26 AM

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!

22nd July 2010, 01:59 AM	#1
dogsbark26 diyAudio Member Join Date: Jul 2010 Location: Chicago	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?

22nd July 2010, 03:02 AM	#2
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	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. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

22nd July 2010, 03:10 AM	#4
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Welcome to the forum Mr Bark dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

22nd July 2010, 04:06 AM	#6
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	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. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

22nd July 2010, 04:27 AM	#8
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Good, hopefully you'll get the answers you need. A lot of really smart persons here. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting


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22nd July 2010, 03:09 AM	#3
dogsbark26 diyAudio Member Join Date: Jul 2010 Location: Chicago	Why thank you, which way is that?

22nd July 2010, 03:23 AM	#5
dogsbark26 diyAudio Member Join Date: Jul 2010 Location: Chicago	You may call me dog.

22nd July 2010, 04:19 AM	#7
dogsbark26 diyAudio Member Join Date: Jul 2010 Location: Chicago	I found it, but now my finger smells Already posted over there, thanks.

23rd July 2010, 03:26 AM	#9
nicoledc109 diyAudio Member Join Date: Jul 2010	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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