tri-mode

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rickhouk

Member - Posts: 6

Joined: February 26, 2006

Location: United States

Posted: February 26, 2006 at 6:31 AM / IP Logged

I was running three tweeters in tri-mode on my 2 channel Alpine MRV T-300. two 4 ohm tweeters in

> stereo. an additional 8 ohm tweeter with positive on the left channel and negative on the right.

> Lately i have been getting a lot of feedback and hissing, or it cuts out and in. I tried to use

> an identical amplifier and immediately got the same thing. should i change the configuration? If

> so, how? I have no more room for an additional amplifier. what would happen if i show the amp an 8 ohm load by running the two 4 ohm tweeters in series on one channel and the 8 ohm tweeter on the other channel? HELP! thanks.

DYohn

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Joined: April 22, 2003

Location: Arizona, United States

Posted: February 26, 2006 at 10:50 AM / IP Logged

Some cheaper tri-mode amplifiers are not intended to operate like this. Some amps intend that you use a passive crossover so that the speakers in the stereo pair and the speaker connected bridged are not reproducing the same frequencies. This should be described in your owner's manual if it is required for your amp. What you have done is simply overloading the amplifier. Your best bet is to simply disconnect the middle tweeter. What are you using it for anyway?

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rickhouk

Member - Posts: 6

Joined: February 26, 2006

Location: United States

Posted: February 26, 2006 at 3:16 PM / IP Logged

i was using the middle tweeter as a center.

DYohn

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Location: Arizona, United States

Posted: February 26, 2006 at 3:25 PM / IP Logged

Are you certain your amp is tri-mode capable?

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rickhouk

Member - Posts: 6

Joined: February 26, 2006

Location: United States

Posted: February 26, 2006 at 3:37 PM / IP Logged

no. not sure. it is an alpine mrp t-130.

DYohn

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Posted: February 26, 2006 at 3:58 PM / IP Logged

That is not a tri-mode capable amplifier. You can't use it like that. Disconnect the third tweeter.

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rickhouk

Member - Posts: 6

Joined: February 26, 2006

Location: United States

Posted: February 26, 2006 at 4:10 PM / IP Logged

okay. any other ideas?

Ravendarat

Platinum - Posts: 2,806

Joined: February 23, 2004

Location: Canada

Posted: February 26, 2006 at 4:20 PM / IP Logged

There are no other Ideas, if you wanna keep the same amp then you cannot run the 8 ohm tweeter. The only option for you is to get a different amp if you want the tweeter hooked up

double-secret reverse-osmosis speaker-cone-induced high-level interference distortion, Its a killer

rickhouk

Member - Posts: 6

Joined: February 26, 2006

Location: United States

Posted: February 26, 2006 at 4:48 PM / IP Logged

can i run the 8 ohm tweeter to another amp bridged as a stand alone?

DYohn

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Joined: April 22, 2003

Location: Arizona, United States

Posted: February 26, 2006 at 5:22 PM / IP Logged

rickhouk wrote:

can i run the 8 ohm tweeter to another amp bridged as a stand alone?

That is the only other option if you want to keep you current speaker setup.

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