Question about Legacy Audio LA770 Car Audio Amplifier

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La1498 amp how do i bridge i dont under stand

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If the amp is bridgeable then u should see lettering where the speaker outputs or the channels are and you will a symbol saying bridged and then u can see a + and - symbol with lines going to the other channels. In other words they call it bridged because you are jumping from one speaker output to the other, usually bridging an amp consists of Left - to Right + or vice versa.

Posted on Jan 28, 2008

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Posted on Jan 02, 2017

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In bridge mode the minimum load will be 8 Ohm.
If you are using 4 Ohm speakers, it will mean you will give each side of the amplifier a 2 Ohm load.
Thats to much for this model.

Kind regards,
Gerard

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You need to bridge 2 of the amp channels to each 4 ohm sub to get the most power from the amp. Bridge channels 1/2 to one of the subs and channels 3/4 to the other one. But the amp is only rated for 75 watts RMS per channel and Pyle products are sometimes rated higher than their real capabilities. So, even bridged and with the rated output, you'll only be getting at most 150 watts from a pair of bridged channels. That's not much for a sub.

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1 Answer

Need help bridging


First check your gain it may be turned down. I personally dont bridge speakers. I put each speaker to its own channel on the amp.Make sure positive to positive and negative to negative. Try hookin up two speakers to the amp (not bridged) and turn your gain up around half way. Make sure you amp is switch to lowpass not high since most amps have crossovers built in now. The more speakers you have the less output from each speaker from one amp youll get.

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