My graphs - advice appreciated - Home Theater Forum and Systems - HomeTheaterShack.com

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post #1 of 28 Old 08-27-08, 09:02 PM
union1411
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My graphs - advice appreciated

Any advice appreciated. If you think I should do something different and remeasure, I can do that. This is the best location for my sub based on experimentation (front corner for SVS and behind my seat for MBM).

Basically, I'm curious if I should equalize and/or get bass traps.

SVS PB10
HSU MBM 12
Treatments for reflection points (no bass traps)
I calibrated MBM and SVS using receiver test tone

Both subs (no mains), 80 receiver crossover; SVS crossed at 50hz



Both subs (no mains), 100 receiver crossover; SVS crossed at 50hz



Both subs (no mains), 150 receiver crossover; SVS crossed at 50hz


Last edited by union1411; 08-27-08 at 11:44 PM.
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post #2 of 28 Old 08-27-08, 09:03 PM
union1411
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Re: My graphs - advice appreciated

Waterfalls (to see if you think i need treatments/eq)

Both subs (no mains), 150 hz crossover


Last edited by union1411; 08-27-08 at 11:40 PM.
post #3 of 28 Old 08-27-08, 09:07 PM
union1411
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Re: My graphs - advice appreciated

These two graphs are SVS only (no MBM or mains)

80 hz, no internal crossover



100hz, no internal crossover



sorry, didn't do a 150hz with svs only

waterfall of svs only crossed at 100 hz



vs. waterfall of both subs crossed at 100 hz


Last edited by union1411; 08-28-08 at 12:06 AM.
 
post #4 of 28 Old 08-27-08, 09:13 PM
union1411
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Re: My graphs - advice appreciated

my dedicated HT room it's only 11 x9 feet. but it's my baby (ignore my DYI screen and speaker heights and black grill on my gray svs, still fiddling around/experimenting with stuff)




Last edited by union1411; 08-27-08 at 11:47 PM.
post #5 of 28 Old 08-27-08, 09:22 PM
union1411
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Re: My graphs - advice appreciated

graphs updated

Last edited by union1411; 08-27-08 at 11:48 PM.
post #6 of 28 Old 08-27-08, 09:39 PM
union1411
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Re: My graphs - advice appreciated

so, i'm wondering if i should keep the MBM-12 or if I should just go with a better sub (and get rid of the SVS) and return the MBM.

I've heard an Epik sub and it sounded much better than my SVS (in a worse room too). So I'm looking at the Epik Castle and I'm interested in the MFW-15 as well. But not sure if one of those subs would be better than the SVS/MBM-12 combo I have. I do have a small room, so not sure how much the nearfield placement benefits of the MBM-12 come into play - I'm sitting only about 6 feet from the from the front of my SVS, so I think the tactile benefits (and the benefits of being close to midbass reproduction) might be there if I just go with one great sub instead of the combo. I don't know. It's time consuming and expensive to buy/return subs to test them out because of the shipping costs and lag between ordering and receiving (though HSU was superfast).

red: svs with mbm 80 hz xo on receiver, 50hz xo on SVS
blue: svs no internal crossover, 80 hz on receiver



red: svs with mbm 100 hz xo on receiver, 50hz xo on SVS
blue: svs no internal crossover, 100 hz on receiver



decisions, decisions

Last edited by union1411; 08-28-08 at 01:37 AM.
post #7 of 28 Old 08-28-08, 01:52 PM
union1411
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Re: My graphs - advice appreciated

anyone?

bueller?

am i a leper?
post #8 of 28 Old 08-28-08, 03:06 PM
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Re: My graphs - advice appreciated

Quote:
union1411 wrote: View Post
anyone?

bueller?

am i a leper?
I know how you feel some times. It takes awhile for the experts to chime in. As for keeping the MBM. We can't answer that for you. Looking at your graph of just the SVS, you may not need one. Have you looked at applying Wayne's hard knee curve to your graph's? Do you have any type of BFD? There is a good chance you do not need the MBM. It will take some tweaking with a BFD to get there. If you are not interested in pursing/applying a BFD, then keep the MBM. It is obviously helping the range it was designed to.
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post #9 of 28 Old 08-28-08, 03:34 PM
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Re: My graphs - advice appreciated

Well said, weverb...

union1411, I would think that your current set-up sounds amazing in your space....
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post #10 of 28 Old 08-28-08, 05:06 PM
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Re: My graphs - advice appreciated

Quote:
anyone?
I don't personally buy into the mid bass module theory, so I'm a poor one to ask...... but I thought weverb said it best:

As for keeping the MBM. We can't answer that for you. Looking at your graph of just the SVS, you may not need one.

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