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On lucent amps you sometimes have to bridge two terminals together to make it work. i need to know what two need to be bridged.

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I'm not sure if Lucent has a special bridging procedure, but on most if not all other amps, when you bridge you DON'T connect two terminals together. What you do is instead of using the plus and minus terminals on one channel to one speaker and the other +/- terminals to the other speaker, you will instead use the plus (+) terminal from one channel and the minus (-) terminal from the other channel to drive one speaker and the remaining + and - terminals remain unconnected. Be sure you use the + and - terminals that are marked for bridging. Please note, that when you bridge that your speaker load DOUBLES to EACH channel. In other words, what your amp saw as a 4 ohm speaker going to one channel alone, it now sees as a 2 ohm speaker on each channel when bridged. Be sure you know what you are doing before you bridge and fry your amp. In my experience, if after bridging your amp works fine for about a month and then fries then you bridged wrong and ended up with the wrong speaker load on each of the bridged channels. Be careful. Amps cost a lot to repair. Good luck.

Posted on Jun 03, 2008

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How can I connect it to get the most power out of it?


What load is the amplifier designed to drive? It will only deliver maximum power into the optimum load. The loudspeakers are probably 4 Ohms, but the amplifier may well be able to drive 2 Ohms per channel. This means that you need to fit two more loudspeakers This is probably not possible. Alternatively, if the amplifier can be bridged AND can safely drive 2 Ohms bridged or 1 Ohm per channel, you should connect the two loudspeakers together (+ to + and - to -) and connect them to the amplifier output terminals indicated for bridge (often Left + and Right + but sometimes Left + and Right -). If the amplifier can't drive 2 Ohms bridged, do not connect the loudspeakers together, buy another amplifier and connect one loudspeaker to each, with both amps in bridge mode.
Remember that loudspeaker and amplifier power ratings are always massively inflated in the manufacturers' data, often by a factor of 4 and sometimes by 10 or more. You speakers may not be able to cope with a whole amplifier each, so proceed with caution.

Jun 07, 2015 | Pyle 2 Channel 4000 Watt High Power MOSFET...

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Hi there i have just purchased two newer model type r alpine subs and a week ago i got a great deal on a rockford fosgate 800 a2 amplifier. The amp has two outputs and don't know exactly what ohms are at...


if you bridge it i believe you run at 4 ohms instead of 8 even if the subs are wired together i would not bridge it for fear of blowing the subs. if you where to bridge it it would be the left channel on one terminal and the right on the opposite terminal. but i highly advise against bridging it as they are wired together. its running at the proper impedence NOT bridged.

Mar 14, 2011 | Car Audio & Video

1 Answer

How can i bridge a mtx 9500 using a mono amp?


You cant bridge it to the MONO AMP . You can only bridge subs & speakers to 2 CH & 4 CH AMPS that are bridgeable. Because if it appears that there is 2 channels on a Mono amp its so its convenient for you to hook up 2 4ohm subs to it easily But both channels are actually connect internally together in parallel inside the amp unlike a 2 channel they are separate.

So just connect your mtx 9500 to a plus and a minus and doesnt matter which since all the + terminals of are connected together and - are connected together already.

Whats important is on the side of the sub/box it reads 2 ohms. The lower the ohms the more power the Mono amp will put out. Mono amps are designed to handle 2ohm loads.

If it reads 4ohms The MONO amp is the wrong amp to use cause the power will be weaker. So if you have a 1000 Watt Mono amp at 4ohms the sub will only get 500 WATTS Max while a 2 ohm will get the full 1000 Watts.

If it reads 4 ohms connect it to a 2CHANNEL AMP and BRIDGE IT (connect + of the sub to 1st channels positive of the amp then connect - of the sub to 2nd channels negative of the amp) . The power will be doubled when you bridge it on a 2 channel amp. NOW if it was a 2 ohm sub and you bridged it to the 2 channel amp it will fry the subs and ruin the amp. 2 CHANNELS CANT TAKE A 2OHM LOAD BRIDGED OK.

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2 Answers

Just wanted to know what switches ( which number's ) i push across on the back of my amp to bridge it so that i can get the full 2000 watts out of one channel..... my owners manual is missing so i cant...


just get positive terminal of the right channel and the positive terminal of the left channel. this is were u hooked up ur speaker. and thats is thats the bridge connection. u just mixed the L. & R. output of ur amp.

Dec 16, 2009 | Behringer EUROPOWER EP2500 Amplifier

1 Answer

To bridge a Kenwood KAC-9102D


Hello laurogleal,

The Kenwood KAC-9102D is a mono amp. There is no bridging. Having two sets of terminals is just a more convenient way of connecting two subwoofers. The amp is stable down to 2 ohms impedance, so it is safe to run 2 4 ohm loads in parallel.

Hope this helps.

Apr 28, 2009 | Kenwood KAC-9102D Car Audio Amplifier

2 Answers

Two terminals? bridging theory?


Hello again jm129852,

Having two power and ground terminals allows you to run two smaller wires instead of one big one. It's a convenience. No, you do not have to use them both. They are connected together inside. Yes, you should still use a single fused battery lead. Connect the big wire and fuse holder to the battery and to a distribution block and run the smaller wires from the output side of the distribution block.

When you connect the outputs of a two channel amp to two separate speakers, each speaker gets the power produced by it's channel only. If you are using only one speaker, and the amp is rated to operate bridged, then the speaker will receive the power from both channels, typically twice as much. You do need to be careful when using bridged mode because many amps will only operate safely at a higher impedance when bridged. For example, when operated with both channels connected to separate speakers (not bridged), it may be stable to 2 ohms. But when you connect both channels together (bridged), it is only stable to 4 ohms. Usually, the specifications will tell you the lowest impedance at which the amp should be operated. The specifications for the current RF Punch 500.2 are like this: 125 watts X 2 at 4 ohms; 250 watts X 2 at 2 ohms; 500 watts X 1 bridged at 4 ohms (4 ohm stable in bridged mode). You would NOT want to connect two 4 ohm subs in parallel to this amp in bridged mode. It would result in a final 2 ohm load and the amp would overheat and fail. One 4 ohm sub would be OK, and it would receive the full 500 watts as stated in the specifications. You could connect four 4 ohm subs, two each in parallel to each channel, and the 2 ohm loads on each channel would be OK. Or you could series two of them together for an 8 ohm load, do the same with the other two, and then parallel the two 8 ohm loads for a final impedance of 4 ohms and connect them into the bridged terminals. With DVC subs the connection possibilities get more complex. There are many good impedance calculators online that can help you determine the best wiring solution for various amp/sub combinations. I like the one above at the12v.com web site. Rockford-Fosgate also has one which allow you to select the a number of subs (up to 4), their voice coil configuration (single or dual), and the voice coil impedance. The RF calculator then shows you what configurations are available and what your final load impedance will be.

Hope this helps.

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1 Answer

Kole amp in protect mode?


Are you setting the bridge switch for both left and right or are you trying to run both subs off of one set of terminals? If you running the subs off one set of terminals you are effectively running the amp below 2ohms and thus the amp is not 2ohm stable and you will destroy it.

Some amps actually all ready run a bridged output for left/right operation, this could also be the reason why the protection circuit is kicking on.

Either way it's a component mismatch and you either need a stronger amp or different subwoofer setup.

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2 Answers

Harman-kardon citation 7.1


Go to diyAudio.com and try asking there....

Jan 10, 2009 | Harman Kardon Audio Players & Recorders

1 Answer

Spl 6ch amp


When you want to bridge the amp... Take a look at the speaker terminal on the amp. I guess there is vritten how you connect ordinary and bridged.

Many amps have a button where you can choose how many channels you want. If you just have one pair off signal cable, you must choose 2 on the switch

Jul 20, 2008 | Car Audio & Video

1 Answer

Jbl gto 3501 amp


It's a mono amp. There's no bridging with this amp.

The two pairs of speaker terminals are connected together internally. The second set of terminals is for convenience.

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