Another Subwoofer Cable Topic

@carlsbad 

I think you misunderstood.  I am not trying to take one bass signal and split it into two.

The engineer who makes subwoofers see fit to install a Left and Right RCA input.  Why, if the driver is mono? There is no stereo input into the driver.  It's a positive/negative wire.

Again, I have connected a single RCA to just ONE RCA input and got terrible bass output, until I used a splitter to attach to BOTH RCA inputs in the AMP that powers a single subwoofer.

My question is really why does that happen and why do manuals always say to use one when clearly that isn't the best setup for performance.

On my other system, the receiver has a LEFT LFE and a RIGHT LFE mono output.  When dealing with Surround Sound, you can program a separate left and right bass response.

@oldhvymec 

Again, I clearly confused folks or folks aren't reading my entire post.

My questions has nothing to do with LFE.  It was mentioned because I have two different setups and each is connected differently.

One powered sub has two RCA inputs.  White/Red - Left/Right. Manual says, connect only to ONE INPUT, usually the Right/Red. I have discovered this to be wrong and do not understand why they continue with that instruction when you get more volume in your bass by choosing to connect to both RCA inputs.

My question is whether to use single point-to-point connections or use splitters.

@guakus My answer was meant to address your question.  Sorry I didn't word it better.  

Here ae my thoughts:  I've used subwoofers with 2 inputs and instructions on which one to use if only one signal provided.  This has to be in the design since many people use 2 subs, one for each channel.  I have never had a problem with a sub unable to perform well with only one input.  As I said above, it just amplifies what is supplied to it.

So if your sub is performing poorly with one input, I'd contact the manufacturer.

Jerry

OP I understand what you said, and I explained WHY. You just proved it. If you look at most of the plate amp wiring the signals are combined in the plate to a mono signal. The difference (as you found out) is the signal strength is doubled if you plug into both L/R. 

There is a difference though. The signal is NOT a complete bass track. PERIOD.
You did not understand ME!. You are playing 1/2 the bass signal IF you only use the LEFT or the RIGHT RCA wire coming out of the head set.  With an LFE signal from a head set (most stereo preamps don't, HT preamps do), BOTH left and right make a LFE signal with a step baffle. It is NOT what is recorded.. DO YOU UNDERSTAND. It is hocus pocus sound effects...

It will play louder for sure, it's just not playing all the music or the way it was mixed.

I use Bass columns and subs. The columns play from 300hz and down to 80hz. If I play the left and right columns they image a THIRD phantom speaker, just like a stereo. WHY? The signal is STEREO not MONO. LFE doesn't work there does it?

You want to make sure you get only 1/2 the information there but deliver it to BOTH left and right inputs. Split the signal you'll be like 1/2 of the DBA crowd. It will smooth out the bass that's there though. :-)

There are a lot of sub makers. 20% are good at it.. 80% have great paint. :-)

NOW decouple your subs and the rest of the speakers. Wait till you hear that difference. :-) Go to Servos subs. Bigger :-) go with Columns. :-) :-) :-)

Have fun.

@carlsbad 

Where is the other signal going? In this configuration, the signal path is being provided by a powered speaker. That speaker has left/right outputs.  They aren't specifically for bass; they're just RCA outputs.  Therefore, they would produce full range.  The speakers are the same manufacturer. So they say just run one RCA down to the sub via one RCA.  However, I am using both.

So, is it that I am doubling down on the same signal and marring bass? Again, why do they put two inputs if you aren't meant to use two?