JackT
Hello,

For over 5 years I have been enjoying a pair of F2 Submersives, each with their own built-in amp. recently I started playing with positioning and trying to obtain the best bass throughout my 21 x 13 x 10' closed off room. I found out that by adding a third sub, I was able to obtain a really good balance across most seats in the room. To make this work I have one of the sub outputs on my Marantz hooked up to a Paradigm Servo 15 (for now). The other sub out is connected to one of the F2's and the second F2 is connected via the loop output connection to the first F2.

When I calibrated the system it was at reference level. Afterwards I started to think about this and here is my question:
The 8802A thinks it is connected to two subs. So when I raise the volume it will track properly for two subs. But because I have 3 subs hooked up, will the bass balance stay correct for all volume levels? Does the F2 correct for the fact that a second one is connected via its loop output?

I usually listen to movies at -10dB and music at -20dB. 

Looking forward to some input on this matter.

Thanks,

Jack


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Stereodude
Your two F2's act as one sub acoustically because they get the same electrical signal.  The same as they did before.  The Marantz uses the F2's and the Servo 15 together to achieve the proper output.  They are both adjusted the same as the volume changes so the balance between them stays the same.

Why would you think that the volume won't track?
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JackT
Stereodude,

Previously I had each F2 connected to its own sub out on the Marantz (and prior to the Marantz to an Onkyo 5507). So the volume was always in balance. Now with my current hook up, I have a feeling that for every 1db increase on the volume dial, I am getting a 1.5db increase in actual volume. The first F2 and Paradigm are adjusted properly but because of the loop out to the second F2 I am adding extra output that the Marantz is not aware off. At least, that is what I am thinking. I hope I am wrong. It is basically correct at one volume setting, the one at which it was calibrated. 

Thanks for replying by the way.
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Stereodude
JackT wrote:
Previously I had each F2 connected to its own sub out on the Marantz (and prior to the Marantz to an Onkyo 5507). So the volume was always in balance. Now with my current hook up, I have a feeling that for every 1db increase on the volume dial, I am getting a 1.5db increase in actual volume. The first F2 and Paradigm are adjusted properly but because of the loop out to the second F2 I am adding extra output that the Marantz is not aware off. At least, that is what I am thinking. I hope I am wrong. It is basically correct at one volume setting, the one at which it was calibrated.

Were all 3 subs connected and powered the last time you ran the calibration?  If so, it will all work correctly as you change the volume.  There's no way it couldn't.  Even if they weren't all connected you'd have a constant offset across all volumes.

Are you sure you're not noticing the affect of some sort of Dynamic EQ?
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