Question about Jensen LXA300 Car Audio Amplifier

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What if you wire a dual 2 ohms in series producing a 4 ohm load and bridged it? then each channel would now see a 2 ohm load, right? does a total of 4 ohm load in bridged mode also burn my amp?

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You must have an amp that is designed for a 2 ohm load. If it isn't then you will fry your amp in about one month on average. It will sound great right up to the day it frys.

Posted on Nov 11, 2008

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I have this amp i bridged it to 2 ohms and its been about 3 months its stable havent blown any fuses and its a big difference in sound to. 2 ohms with this amp is definately the way to go. i used to pioneer 12's.

Posted on Jul 27, 2008

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Is it possible to bridge 4 of the channels into 2


Yes it is....you must find out how many ohm stable the 4 channel amp is first. If you "bridge" 4 channels into 2 channels, it will cut the ohm load in half... In other words if you have two 4 ohm subwoofers... And your amp is only 4 ohm stable... And you wire them parallel + to +.... - to - on a dual voice coil sub..... You could fry your amplifier. You can google wire diagrams for the exact equipment you have. It will show you how to "not" fry your nice expensive amps.. Good luck

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How to wire 2/1 channel XPE2700 in stereo/bridged mode?


for stereo wiring, you get the most power with dual 2 ohm loads, in mono, you want a single 4 ohm load, or 2x2 ohm loads

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Hello, need to know how i should wire a single 14" sub spk to my ST4-720 ??


havent heard of too many 14" speakers... but it all depends on what ohm the speaker is. single 4 ohm- bridge it on one set of channels. left + right- . if its a dual 4 ohm i wouldnt reccomend using it at all. you could technically bridge each coil on each set of channels. but it may not sound right. kinda hard to set the gains and match them. dual 2 ohm- run the sub stereo. one coil to one channel, the other coil to the other channel. single 2 ohm. dont use it unless you get another sub like what you have. then run it stereo. one sub to one channel. the other sub to the other channel.

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How should i arrange the wiring on my xm-zr1852 xplod amplifier to get the best performance out of my 12'' audiobahn subwoofers?


it depends on the impedance of the subs-if your subs are dual 4 ohm coils then you can parallel the coils which will give you 2 ohms per sub- you could get max performance from your amp by just wiring the 2 ohm speaker load to each channel of the amp which will hit them with about 200 watts rms each. another way to do it is to wire the coils in series which will make each sub an 8 ohm load and then parallel them together and that will show a 4 ohm load -which you can use to run the amp safely in bridged mode. This will give you exactly the same amount of power to your subs as in 2 ohm stereo will. so with your amp being 2 ohm stable in stereo or 4 ohm stable in bridged mode- those are the numbers you want to hit for maximum"safe" operation

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To get the most power what is the best way to connect paraelle or


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1 Answer

2 ohm speakers wont work on a lanzar max pro 4000 watt


The 2 ohm stable rating on the amp is PER channel meaning that you could effectively hook up a 2 ohm speaker or a 2 ohm load to each channel without the amp getting f"d up-butin bridged mode it will only be 4 ohm stable. to achieve a 4 ohm load with your sub the type x wire the coils in series that will get you at 4 ohms to run in bridged mono .But you will get the exact same amount of power if you wire each coil to one channel of the amp as bridged mono sees the sum of your 2 ohm channels combined-Hope that helps.

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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

I have a kicker zx700.5 amp


Hello aj_vidal22,

Here's the link to MTX's sub page where you can view or download the information you need to properly wire the subs to your amp.

http://www.mtx.com/caraudio/products/manualsQuickInstall/subs.cfm

For maximum power, you'll need to wire the subs so that they present a 2 ohm load to the sub outputs on your amp. That will give you the full 420 watts RMS the amp is rated for. Likewise, you,ll want the run the front 4-channels at 2 ohms. Run separately, they produce 85 Watts times 4 channels, or if bridged, 130 watts times 2-channels. But if you run fronts at 4 ohms, they only produce 70 watts times 4 channels and your sub output at 4 ohms drops to 210 watts.

Hope this helps.

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1 Answer

How do i bridge 3 subs to a 4 channel amp


My information shows the XM-1652Z as being a 2-channel amp. It will not be stable below 4-ohms in bridged mode. For best power, your subs will need to be 2-ohms with all 3 wired in series. This will present a 6-ohm load to the amp. After wiring the subs in series, connect the positive speaker wire to one channel (+) and the negative speaker wire to the other channel (-). For the 1652Z no other wiring is necessary. For subs you will also want to set the LPF (80Hz) switch to the "ON" position (to the right).

Keep in mind that the rated output is only 400 watts RMS at 4-ohms in bridged mode. That's kinda wimpy for 3 subs. You would probably obtain better results from two 2-ohm subs, each connected to a separate channel. That way each sub would be getting 200 watts RMS, still low but there's lots of good subs that will sound pretty loud with 150-200 watts

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1 Answer

Car Audio System Drwing too much power with 2 different Amps


A dual voice coil speaker can be wired to be a 2 ohm speaker or an 8 ohm speaker depending on whether you wire it in series (8 ohm) or parallel (2 ohm). When you bridge your amp then the two channels will share the load from your speaker. If the speaker is wired as 8 ohm then each channel of the amp is driving a 4 ohm load which is fine. If you are bridged into a 2 ohm speaker then each channel will be driving a 1 ohm load, which is a very very heavy load. Is your amp designed to drive a 1 ohm load? If not then that would explain why you are having a problem.

Sep 13, 2007 | Jensen LXA300 Car Audio Amplifier

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