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» Termpro Audio Forum » Component Specific Topics » Subs and Enclosures » still needing to know

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craiga63
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i have 200 watts rms running mono to 1 12"rf punch and 2 10" mobile authority thump subs, all are 4 ohms each.i have the 12 in parralel and the 10's in series.i figure im runnin the amp at 6ohms.my amp is a jensen amp. in the book it says 4 ohm min. for one sub, or 8 ohm min. if runnin left and right spkrs.and one sub mono. my amp gets pretty hot, but ive never had a problem out of it yet and dont want to.is this the best set up i can run and am i right on my figuring of 6 ohms??please help!!! thanx
also wanting to know what range of spl i would be running

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craig

[This message has been edited by craiga63 (edited 09-03-99).]


Posts: 131 | From: columbus,in. | Registered: Aug 1999  | Report this post to a Moderator
Dukk
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So, If I'm reading this right you have three 4 ohm drivers, one 12 and two 10s?
10s in series: 4+4= 8 ohms
8ohm load in parallel with a 4 ohm load: (4*8)/(4+8) = 32/12 = 2.66666666 ohms. OR 1/4 + 1/8 = 3/8, so 8/3 = 2.6666666 ohms

2.66 on that bridged amp makes it run at 1.33 ohms. Uh-oh, there's why it's hot...

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And that's the bottom line, cuz:
LORD DUKK SAYS SO!

The Big Show
The Dukk says: Know your bass: PORT your damn box!!
Have HoleSaw, Will Travel!


Posts: 3690 | From: Abbotsford, BC, Canada | Registered: Mar 2000  | Report this post to a Moderator
craiga63
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thanx dukk, what would be the best wire configuration for the three subs?

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craig


Posts: 131 | From: columbus,in. | Registered: Aug 1999  | Report this post to a Moderator
Dukk
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Sorry but there really isn't one.... If the amp hasn't smoked yet but it worries you, get a fan to blow on it and just take it easy when really pounding.

------------------


And that's the bottom line, cuz:
LORD DUKK SAYS SO!

The Big Show
The Dukk says: Know your bass: PORT your damn box!!
Have HoleSaw, Will Travel!


Posts: 3690 | From: Abbotsford, BC, Canada | Registered: Mar 2000  | Report this post to a Moderator
craiga63
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my amp is supposed to be 200 watts rms in mono at 4ohms. if im runnin it at 1.33 how much more watts am i getting out of my amp.what power class would that put me in or are the classes rated at what the amp actualy is running?

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craig


Posts: 131 | From: columbus,in. | Registered: Aug 1999  | Report this post to a Moderator
   

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