Are you guys with 2 subs running them stereo or summed (master/slave)?

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Speakers: Magnepan 1.7
Accuphase: E-408 180 watt integrated amp. DAC & phono boards. Accuphase DP-55V CD/DAC
MacMini music server, Ipad remote. PS Audio PPP. Kimber Hero, Kimber 8TC. Halide Bridge

Stereo as in 2 masters with my dual F112s.

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System 7.1:
Wilson Sasha/Mezzo/Watch surrounds
D'Agostino Momentum x3 amps
Bryston 4B SST2 x2 amps
Krell S1200U pre/pro
Oppo Blu
Sony Blu changer
McIntosh MS300 music server
EAR/Yoshino Acute III tubed CDP
Transparent Ultra cabling
JL Audio F212 Sub
Lumagen video processor
JVC RS-35U projector
Stewart Screen

Have you tried it both ways?

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Speakers: Magnepan 1.7
Accuphase: E-408 180 watt integrated amp. DAC & phono boards. Accuphase DP-55V CD/DAC
MacMini music server, Ipad remote. PS Audio PPP. Kimber Hero, Kimber 8TC. Halide Bridge

Mono, master/slave sounded better in my family room system (2 f113's)

Also using 2 Genelic subs in HT in mono. Just sounded better. More output at less volume.






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McIntosh:MX135,C2200(2),MVP861(2),MCD205(2),MR78(3),MC1201 (2),MC501,MC402(2),MC252,MC207,MCC602TM(2),MCC302;
B&W802D's;JLAudio:f113(3);
Genelic:1038B(2),1034BC,1032A(4),7071A(2);Lexicon:MC12B,RT20;Pioneer Elite:BDP-05FD;Runco VX1000ci;Stewart Greyhawk 120".

Yes. The subs running as independent masters create a more spacious, more palpable soundstage but it depends on the recording. I guess some recordings sum the low bass while others throw a bit more low bass into L or R channel.

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System 7.1:
Wilson Sasha/Mezzo/Watch surrounds
D'Agostino Momentum x3 amps
Bryston 4B SST2 x2 amps
Krell S1200U pre/pro
Oppo Blu
Sony Blu changer
McIntosh MS300 music server
EAR/Yoshino Acute III tubed CDP
Transparent Ultra cabling
JL Audio F212 Sub
Lumagen video processor
JVC RS-35U projector
Stewart Screen

Do you hear much music below 22hz.
Not sure I would hear my subs that low, with the music I play.

Maybe the Munster Cathedral 4 organs?

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McIntosh 501's, Sonus Faber Elipsa speakers,McIntosh LS 360's Full Surround Speakers in Home Theater. (2) MR85, MCD201, C46 Pre, (2) JL F113 Fathom Subs, (1) JL F112, MA2275 Int Amp, Sonus Faber Cremona Auditor Speakers, Project Turntable. Blackbird Cart, Clearaudio Concept table, MC, Oppo 95 120 inch screen and an Epson 1080UB Projector. Nothing better then Pipes/Cigars, and a Great movie with the JL subs Pounding. MAC1700 Receiver and ML-1C speakers

Yes because the subs make a noticeable difference when on. Don't forget the crossover point is not a "brick wall filter", even at the higher dB/octave points the output does "creep up" well above 22Hz. An "octave" is the span between one musical pitch and another double or half the frequency of the first. The "slope" of the crossover is so many dB's down at double the frequency point then.

__________________
System 7.1:
Wilson Sasha/Mezzo/Watch surrounds
D'Agostino Momentum x3 amps
Bryston 4B SST2 x2 amps
Krell S1200U pre/pro
Oppo Blu
Sony Blu changer
McIntosh MS300 music server
EAR/Yoshino Acute III tubed CDP
Transparent Ultra cabling
JL Audio F212 Sub
Lumagen video processor
JVC RS-35U projector
Stewart Screen

Is this due to there being two drivers, or because there are two subs in stereo mode? In other words, does something like Thor's Hammer or a Gotham count as one sub or two, because they have two drivers?

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For I am not ashamed, for I know [in] Whom I have believed and am persuaded that He is able...

Those would both be single subs even though they have multiple drivers.

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AMP's: D'Agostino Momentum's
Pre Amp: Mcintosh C-1000 & C-1000P
Sources: McIntosh MCD-1100 & MS-300, Olive 4HD, SonoS, Pro-Ject 6 PerspeX
Speakers: MBL 111F
Cables: Transparent Ultra MM2 & Reference MM2 & Powerlink MM2x

I'm glad I went with a stereo pair driven as Masters. I've been playing a lot music and the difference is just stunning. I can switch them on and off (thanks Dan) and find that the presentation will collapse or expand depending if they are on or off.

I had them set a bit hot (gain) until the better half "suggested" I use up some battery on the SPL meter. She was right. Now they do not draw as much attention to themselves. Much better in a supporting role vice the lead.

Gordon

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Martin Logan Spire & JLAudio Fathom F112 (2)
C1000/T, MD1K, MC501 (2) MR-88
WireWorld 5^2 Eclipse speaker, 6.0 Eclipse IC, Silver Electra PCs
RealTraps (8)
Symposium Rollerblocks 2+, Black Diamond Racing Mk 3 Pits under speakers