2 subs vs. 1

[The Paulinator]

Originally posted by CZ Eddie



I thought most receivers put out the LFE in mono, so no stereo is really possible?

I could be wrong though.

You can either put the subs next to each of your front speakers (best for running them in stereo mode) and use the speaker level inputs, borrowing from your speaker wires, or if you want to place each sub at different points in the room and run them mono to help cancel out standing waves (best for home theater), you can divide the sub out (my Sony ES 777 has two outs). Remember to raise the level of your sub out as much as possible so you get more output from the half-signal going to each sub.

[michael]

So between a single 11" and a double 9" I'd go for the latter, with all other asoects equal. The latter's cone area is effectively 18" together

do you know what a circle is?
2 9" woofers are nowhere near the sd of an 18, as said earlier they are only 25% more sd than the 11"

um not to sound rude but why hasent anyone mentioned xmax, as a general rule the larger the cone the higher the xmax, a 12mm xmax 11" driver would move alot more aire than 2 6mm xmax 9" drivers.

[planet10]

A pair of 9" drivers will have an Sd of about 88 sq in -- an 11" about 71 sq in. -- an 18" about 200 sq in.

And what is with the unusual size of the drivers, 8, 10, 12 are much more common.

dave

[kelticwizard]

Originally posted by michael


um not to sound rude but why hasent anyone mentioned xmax, as a general rule the larger the cone the higher the xmax,

Somebody did. Post #7, second sentence.

Originally posted by michael
a 12mm xmax 11" driver would move alot more aire than 2 6mm xmax 9" drivers.

We don't know that the excursion difference is necessarily that great between the two drivers. Although it might be that big. If I had to bet, I would bet that the 11 incher was more likely to have the big excursion.

[kelticwizard]

Originally posted by planet10
And what is with the unusual size of the drivers, 8, 10, 12 are much more common.

dave

Now that you mention it, I was wondering about that, too.

Odd size drivers do happen now and then, but what a coincidence that the two subs you are comparing are both odd sizes.

Are these subs being measured around the outside of the frame, or is just the cone itself being measured here?

Could we be taking about two 10 inchers vs one 12 incher?

The link Google translated from German below calls it a 300mm speaker. That normally means 12".

http://translate.google.com/translat...D%26ie%3DUTF-8

[kevyjo]

What is youre budget for these commercial subs?

[kevyjo]

The reason why i asked is that for commercial subs, I dont think you can do better for the price than svs or hsu sonotubes, where you can get true 20hz extention for under 400 a piece NOT including the amp, though there are some very inexpensive amps out there. If youre sattelite speakers are small, "stereo" subs might be the way to go because you might have to have a higher crossover setting to blend them smoothly. Two hsu or svs subs should shake the house also.