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-   -   Low ohm load on highs? (https://www.caraudioforumz.com/general-discussion-10/low-ohm-load-highs-2992/)

Speakerman Jan 3, 2005 11:55 PM

Let me start off by saying I havent been here in a long time, I got my system sounding the way I wanted it and ran out of money so I haven't really kept up with the forum searching. But, I've had a pair of 6.5 components (Planet Audio) laying around so I figured I would install them in the doors to accent the Orion P5.2 in my fiberglass kickpods. My 'highs' amp is a JL Audio 300/4. The Planet Audio components are 4 ohm and the Orion components are 3 ohm ( I believe).

Now for my problem. (sorry about the length)

I ran all the wires, made all the nesessary installation preps, plugged everything in, cranked it up, and loud-nasty-static is all I hear from the speakers (all of them-including the Orions that are in perfect shape)

So I begin my trouble shooting. I unplug on of the new Plante Audio comp. and BAM, crystal clear sound. I plug it back in and static. So I tried pulling out the other PA comp. and again, its crystal clear. I noticed that when I plug everything in and crank it up, the orangeish-peach LED light for the low ohm load comes on and blinks to the music. I couldn't figure out why this is happening...so I just turned the gains on the amp way down and finished the installation...

Does anybody know what the deal is :confused:

92zed34 Jan 4, 2005 10:23 PM

If thats a 4 channel amp bridged to 2 channels you cant go below 4 ohms on each of the channels.
Run new wires from the amp and use "4 channels"

92zed34 Jan 4, 2005 10:28 PM


Originally posted by kickerolds:
If thats a 4 channel amp bridged to 2 channels you cant go below 4 ohms on each of the channels.
Run new wires from the amp and use "4 channels"

Sorry you can go to 3 ohms bridged....But if the orions are 3 ohms already youre breakin the rules,lol

Eli47 Jan 4, 2005 10:54 PM

The topic heading is the reason for the problem ;)
Try connecting the highs in series.

Speakerman Jan 5, 2005 02:10 PM


Originally posted by kickerolds:
</font><blockquote>quote:</font><hr />Originally posted by kickerolds:
If thats a 4 channel amp bridged to 2 channels you cant go below 4 ohms on each of the channels.
Run new wires from the amp and use "4 channels"

Sorry you can go to 3 ohms bridged....But if the orions are 3 ohms already youre breakin the rules,lol </font>[/QUOTE]The amp is not bridged. Each component is ran from a single channle. The amp should have no problem carrying a 3-4 ohm load...

Speakerman Jan 5, 2005 02:15 PM


Originally posted by Eli47:
The topic heading is the reason for the problem ;)
Try connecting the highs in series.

This is not a good idea. To do what you are saying would mean to connect one brand/impedence speaker in line with another brand/impedence speaker. I've done this before when I was a noob and the result is not happy. Heat and distortion are a not so friendly side effect.

Also this would give me a 7 ohm load bridged = no power... ;)

SUX 2BU Jan 5, 2005 02:23 PM

Can two component sets be wired in series though? I thought the passives would mess that up?

Eli47 Jan 5, 2005 04:18 PM

I thought that the 4 channel was bridged stereo.
yeah Sux, it will do some funky stuff.
Have you checked that all tweeters are in good shape? Is it possible that a capacitor in one of the X/O's is leaking?

Big Sexy Jan 5, 2005 04:51 PM

try another set of 4 ohm speaks and see if it does the same thing. seems like the speakers are o.k, maybe the amp has a problem internally with all channels driven. Make sure you use all 4ohm speaks for the test to see if there is a problem with the amp.

MR2NR Jan 5, 2005 04:53 PM

Disconnect all the speakers from the amp. Try one speaker set at a time, if they all work fine off of any of the channels, then it is not a speaker issue but an amp issue. If you are running the amp in 4 channel mode, have a close look at the rca wires to ensure that none of them are shorting to ground. Run a temporary new set over the seats for now if you must. Take it a step at a time to work the problem. If you find one set of speakers, say the front left, is making noise when no other speakers are hooked up, then we must look at the line from the amp to the speakers, the crossover, the speakers themselves etc. Then replace the crossover with the other crossover, still have noise? Step at a time and cover all the bases.


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