How to use bluetooth zlx12BT with subs

Hi, i just bought a pair of EV ZLX12 speakers. 1 is with bluetooth the other is not. When phone is paired with BT (left), i can set the mix out to R and use XLR to send R channel to 2nd speaker to get stereo. Now let's add subs.

My subs are DIY bass horns powered by XLS1500. If i had a mixer, or wanted to use RCA or XLR or even 1/4" input (e.g. from mixer) i would connect source to XLS1500 and use the link/out to each speaker to get stereo.

But if i wanted to use phone with BT, how would i do it with subs? Obviously with BT i have to connect to the L speaker. But theres only 1 mix out on the ZLX12BT so that has to go to R speaker to get stereo. So the only possible line out to sub amp would be the mix out from R speaker. So my sub channel will only be mono, from the R channel.

I guess now my question is, is that ok? It should be ok if i can assume that all content under 100hz will be mono at the source anyway. In which case maybe all that means is i would need to increase the gain at the sub amp by a factor of 2, to get back to the level as if i did input stereo to the amp. Does that make sense?

Is sub bass in music usually/often/always recorded as mono? Or is my assumption false.?
 
Hmmm...I Guess that Is valid for vinyl since large asymmetrical discontinuites (= bass notes) might provoke stylus Jumping.
Also from speakers the bass Is less directive (Beamng) so It might be simplified to a single unit, but 100 Hz Is too High...I assume 80 Hz Is generally aknowledged as the upper limit for subs.
 
...same applies to microphones, I guess.
The recordings techniques and post edit might make hear another thing, i.e. the time of arrival of a sound can be delayed or the mic positioned in far field ro mimic the 'flight travel' of a wave
 
Last edited: