Well it’s not though is it, because it’s mono bass at half the level. as you’d be seeing half the signal strength.
Buy two subs
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Shush.
What will the difference be with a combined signal or even two subwoofers?
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So what? That’s why subs have level adjustment. You always need some adjustment to match because I t’s not like every sub and amp has the same gain and you just plug in and it’ll work.
Anyway, just add 3dB*
*but I’d bet it’s not going to be exactly a simple 3dB difference.
Its like people aren’t thinking this through for some reason.
A preamp has two outputs… left and right. Modern music, especially digital, can have bass in either channel. Lets say you listen to some jazz and the double bass is in the left channel. If you only plug one channel into your subwoofer, and it happens to be the other channel, then you will not hear the subwoofer doing anything when bass comes out the other channel.
You either need a summing network of some kind, to bring the two down to mono (theres one in your sub), or you need to run two cables. Otherwise you’ll just get some weird, half stereo bass nonsense that will sound completely unbalanced.
I now see why they closed the thread on FinkPish.
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I think we should keep this open for a very long time.
It needs an award of some type.
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This.
And if you’re using the sub correctly (i.e. not crossing-over to the main speakers too high, not using too much gain, phase-matched correctly), it will be acoustically ‘invisible’ in-room - i.e. actual low bass lacks directionality cues.
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Bit early for a cat but then again we have been starved of genuine cat action for some time
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I’m optimistic that it will run for a while 
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The inevitable answer is a new house, low powered valve amps and large horns.
The first step on this road is to just connect one cable to the sub and be happy. It will be alright. It is well worth an experiment with.
If you let me know the length required I may have something you can experiment with( still talking about cables btw ).
Then you need to realise it is very difficult to integrate and what you really need if you are being honest with yourself is new speakers. New speakers will need new amps.
Then you will quickly realise your front end is not quite up to scratch.
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Yay! 
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and then you still need a subwoofer by the sound of it.
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The answer is bigger horns. Bigger house needed. Not Norfolk measurements.
I know how it works thanks.
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This sub tuning thing is tricky - I have a f-off Arendal sub installed now and despite their wondrous phone app it’s unruly. Mind you I’ve just stuck Gladiator OST on and right now it’s all worth it 
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Does this mean that Sir Peter Walker (were he still around) would now be recommending kicking two cardboard boxes in time with the music?
It’s so hard to keep up.
Pressurised water reactor or a diesel/battery combination are the more traditional solutions. Best of luck though.
I tend to think the hardest part of setting a sub up is managing people’s expectations of what they think a sub should be doing versus what one is actually capable of, not least because people only occasionally buy one that will integrate well in their given room, and with their choice of main speakers.
Times like that, the wisdom of Davewhit is much needed…
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