Arc Amp Ultra question??
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Road Master
Joined: May 2008
Posts: 900
Likes: 4
From: Wisconsin
Arc Amp Ultra question??
Installed my Mini 125.2 tonight on my Limited......I have Hogtunes (only thing I have on hand that will fit at the moment) in the rear and 6 1/2 Hertz in the front........I installed a High/low converter (seemed the easiest)..............everything sounds great until you turn it up and the rear goes to all static.........Any ideas??
I doubled checked all the wires and everything is good.....Could it be the converter?? Just got one from radio shack.....turned down it is fine but when you turn it up it goes all static in the rear......front sounds great....
Thanks for the help!!
I doubled checked all the wires and everything is good.....Could it be the converter?? Just got one from radio shack.....turned down it is fine but when you turn it up it goes all static in the rear......front sounds great....
Thanks for the help!!
Seasoned HDF Member
Joined: Apr 2006
Posts: 10,675
Likes: 95
From: Billings,Mt.
I would try it without the converter.
I had one on mine until Firecap sent me a new wire plug.The plug does not use the RCA jacks like the converter does.
It seemed like the converter made no difference.
Are the rear's running of the amp?
I had one on mine until Firecap sent me a new wire plug.The plug does not use the RCA jacks like the converter does.
It seemed like the converter made no difference.
Are the rear's running of the amp?
Thread Starter
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Road Master
Joined: May 2008
Posts: 900
Likes: 4
From: Wisconsin
Solid green...............no codes.....
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Seasoned HDF Member
Joined: Apr 2006
Posts: 10,675
Likes: 95
From: Billings,Mt.
I tried 2 and 4 ohm speakers(2 pair)together and the amp did not like that!
Went with all 4 ohm.
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Thread Starter
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Road Master
Joined: May 2008
Posts: 900
Likes: 4
From: Wisconsin
Its something, wiring on the right I am guessen, I disconnected the right and the left (front and rear)sounds awesome........unhook the left and fire up the right and front and rear are static......gonna check all wires tomorrow........has to be a crappy connection
Thanks for the help
Thanks for the help
Advanced
Joined: Apr 2009
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You may be over taxing your amp. I may be wrong, but I don't think so.
If you have a set of 3 ohm speakers in the front and a set of 2 ohm speakers in the back connected in parallel, i.e. a 3 ohm speaker and a 2 ohm speaker on one channel and the same on the other, your total circuit resistance is 1.2 Ohms.
According to the ARC specification sheet, at 4 ohms it is making 70 watts. At 2 ohms it is making 125 watts. 1 ohm is NOT RECOMMENDED. You are pulling more power from the ARC than it's designed to give. Additionally, the HT speakers clearly cannot take it and the 6.5 Hertz speakers are handling it for now but probably will soon be toast.
To run four speakers in parallel on an ARC Mini, I think that all four should be 4 ohms. This would put the total circuit resistance at 2 ohms which is the lowest resistance for which the ARC amp is rated.
Last edited by Francois; Sep 14, 2009 at 10:01 PM.