guys,
I'm in the process of setting up a new 4ch JLe4300 amp into 2chs. But, a bit perplexed about its pream signal inputs. It's pretty clear about the two channels speaker bridged output.

On the input side, the manual states to switch CH 3&4 Input switch to "1&2". This is if you wish to feed all four channels by using only two channels of input.

But, the same manual then also states that when bridging: If you wish to send a Left-only or Right_only signal to a pair of the e4300 channels, use a "Y-adapter" to split the single channel signal into both left and right RCA inputs. This option is useful when using a pair of the e4300's channels to drive left channel speakers only and the other pair of the e4300's channels to drive right channel speakers only.

These two statements seem redundant. Anyone have experience on this?

 

I used to have an e4300 and it is an excellent amplifier. Here are the steps to take:

For left and right stereo seperation

1). Place "channel 3&4 selection" switch to "discrete" because you will still be using all 4 inputs.

2). Attach a Y connector to both "left channel" and "right channel" RCA cables coming from the headunit.

3). You will now have 4 RCA connectors instaed of just 2. 2 left's and 2 right's. Take the 2 left connectors and plug them into "channel 1" and "channel 2" inputs on the amp. Take the 2 right connectors and plug them into "channel 3" and "channel 4" inputs on the amp. You now have one half of your amp for left channel and one half for right channel so your music will still have stereo seperation.

4). Your speakers will hook up like this. Take the left speaker wires and hook the + wire up to the "channel 1" + terminal, hook the - wire up to the "channel 2" - terminal. Take the right speaker wires and hook the + wire up to the "channel 3" + terminal, hook the - wire up to the "channel 4" - terminal. The "channel 1" -, "channel 2" +, "channel 3" -, and "channel 4" + will not be used.

If you don't want stereo seperation or left and right, follow these instructions:

1). Place "Channel 3&4 selection" switch to "1&2" because you will only be using 2 inputs.

2). Take the left RCA and right RCA connectors coming from the headunit and plug them into the "channel 1" and "channel 2" inputs on the amp. It does not matter which RCA goes into which input, just plug them in.

3). Hook up the speakers as per step 4 in above instructions.

In this configuration the amp will sum both left and right signals into one or "mono" operation. You will not have any stereo seperation in this configuration. This configuration is usally only used when powering subs.

 

Thanks a lot, you saved me from a lot of trouble!