eattoride
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Subwoofer for Cremona 2 channel system
Kal Rubinson
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How are you deriving/managing the signal for the sub(s)?  What devices do you have for balance/EQ?

Kal

eattoride
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Hi Kal,

I use the high level inputs to the SVS sub, and then use the subs control to balance it to my speakers. I use an analog decibel meter to dial in the sub - mainly to reduce the mountainous bass around 40 to 100hzhz.

The sub does work okay, but I believe that I can do better.

Is there a better device out there to assit with balancing the system?

jackfish
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Elemental Designs eQ.2, or Velodyne SMS-1 for addressing room peak and null frequencies.

I would use the line level output from the Simaudio MOON i-7 to provide the signal to the subwoofer(s).

A pair of Rel R-505s would likely integrate better with your Cremonas than a single SVS PB12+, and still provide sub-20Hz performance.

eattoride
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I've located a used REL505, so if the seller and I can come to an agreement, I will also buy the SMS-1 to equalize the two subs. The SMS-1 looks to have a lot of good features for a reasonable price. This should be fun!

If I go ahead with this I'll let you know how it turns out.

Thanks

Mike

Kal Rubinson
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jackfish's suggestions are pretty good at reasonable prices.  You should also consider that the low end of the Cremona's should be rolled off, partly to increase power-handling but, also, to minimize interaction with the bass from the subs.

Kal

eattoride
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Thanks Kal - Is the SMS-1 the tool that I should be using to roll-off the low end - or is there a better device? I'm concerned that passing the audio signal through the SMS-1 would degrade it, before going to the Cremonas. Also - I have an integrated amp, a Simaudio i7, so I'm not clear as to how to connect an SMS-1 to roll off the lower end of the Cremonas.  The connection diagram using separate components would be:

Preamp => SMS-1  => amplifier => speakers                                                               

For my integrated amp, the connection is not obvious to me.

BR,

Mike

 

commsysman
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The type/shape of the room is critical and has not been addressed; that is of tremendous importance, if you ask me. Placement is also critical.

My experience over the years is that it is more difficult to integrate 2 subs than one (although my room is so big that I HAD to use two Vandersteen subs with my Vandersteen 3A speakers to get enough very low bass; to 20 Hz).

I am guesing that the critical thing, in your case, is to get a subwoofer with its own setup software and microphone and get the room placement exactly right.

The best one I know of offhand is the Velodyne Optimum 12, which is superb in all those respects at $1500. It has selections for rolloff filters, gain, phase, and the software to optimize it.

By the way, a great test track for low bass is "Rain over the Quaker Graveyard" from the Delos CD 3503 , "King of Instruments". It has sustained notes below 20 Hz (those will make your curtains flap...lol).

eattoride
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Well, I've purchased a Velodyne SMS-1, should have it sometime this coming week - if UPS isn't buried by Christmas packages....

Will be fun to see how the SMS-1 helps to integrate the SVS subwoofer into my system. I may have to spring for 2 Velodyne Optimum 12's, but I have another project in mind before I do that...

Thanks for all of your suggestions!

 

 

 

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