Thinking about adding a 2nd Sub.  

My receiver only has one mono LFE pre-out. I currently have a Y-adaptor at the end of the run plugging in to the sub L & R inputs.

I have a Velodyne DLS-4000 Sub (12"/200 Watt RMS). I previously had the CHT-15. The CHT-15 was very very loud, but was too boomy for my taste.

The DLS-4000 is much smoother and tighter, but not as loud (not as earth shaking as the CHT15 was).

What happens when I use a Y-Adapter to two separate subs? Will the signal be split in half? If so, I'm wondering if the AUTO on feature would not work since the subs may not detect a weaker signal....

I'm just wondering if the split signal would cancel out any gains from the second sub.

...or would the signal remain about the same (same voltage, lower impedance), and would I get almost double the LFE effect in the room?

Bump

I currently keep the sub gain/volume at around 10 o'clock on the dial for regular TV viewing. When I watch movies, I crank it up from 1 o'clock to 3 o'clock. Sounds good, but not as loud as the CHT-15 was.

My room is rather large (15x15) that opens up to the kitchen (also 15x15) so the total area to pressurize is about 15x30.

I'll run some tests with a Y-Adapter and only one side connected to my one sub to see what happens.

This is exactly what I was planning.

I did some tests yesterday. When I split the one LFE signal with a Y-Adapter, I lose about 3 db. This was easily compensated for by turning up the gain on the sub about a quarter turn.


The auto sense feature seemed to be pretty much unaffected. Looks like the auto sense feature may work on voltage, rather than audio signal.