NEW MFW-15 amps (May 2010) *pics* - Page 89 - AVS Forum
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post #2641 of 2647 Old 07-28-2014, 10:11 AM
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Originally Posted by NNate View Post
How do you like your Gramma [I think that's what your subwoofer stand is]? Right now I'm flat on concrete -> pad -> carpet. Wondering if getting it a little bit off the ground would make much difference.
I bought the GRAMMA primarily to make sure my neighbors don't come knocking at my door, but it definitely makes a positive difference to the sound quality as well. The before / after difference in terms of decoupling from the rest of the house is very noticeable. I've not needed (so far) to address any specific rattling of household objects for example, and "boominess" in general is reduced. I attribute that mainly to the GRAMMA, but then again I don't run my system to anywhere close to reference that often.

On the other hand, if you have wood floors and like to feel your couch vibrate under you, then it might be a bit of a killjoy. I'm not sure what difference it would make on concrete, as I'm guessing the mass involved there already gives you a good deal of decoupling from the rest of your place (as opposed to a wood subfloor). Do a search - there are loads of threads on this topic already.

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post #2642 of 2647 Old 07-28-2014, 12:51 PM
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On the other hand, if you have wood floors and like to feel your couch vibrate under you, then it might be a bit of a killjoy. I'm not sure what difference it would make on concrete, as I'm guessing the mass involved there already gives you a good deal of decoupling from the rest of your place (as opposed to a wood subfloor). Do a search - there are loads of threads on this topic already.
At the old house, the Turbo was sitting on slab-on-grade concrete (w/ carpet/pad) in the finished basement, and vibrated the seats plenty during some movies. This was with the Turbo against the right wall facing towards the rear of the room - there might be some pictures over in the Seaton forums or on various MFW threads here. The sub sat directly on the carpet - no Gramma or pads of any kind.

At my current house, it's on a carpeted, suspended wood floor above the crawl space. The sub is behind the seats in the right rear corner, facing left. There's definitely plenty of vibrations in the seats, and I rarely play the system at reference levels, usually between -10dB to -15dB. Some discs are more "subby" than others, of course. Pacific Rim was one of those movies where the Turbo was pounding out the bass so fiercely that at the end of the movie I was physically exhausted from being knocked around in my chair like it was a roller coaster ride...

And unlike tebling - with my basement media room location in my house and the adjacent house locations, this allows me to set the volume wherever I happen to need it. I'm quite lucky regarding this...

I wonder if adding a Gramma or some isolation pads at the corners of the sub might produce any noticeable improvements...hard to imagine the Turbo sounding much better than it already does! Maybe tebling will have an open house sometime so some of us locals can check it out his new gear? <cough, cough>
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Last edited by mak99; 07-28-2014 at 03:00 PM. Reason: awkward wording?
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post #2643 of 2647 Old 07-28-2014, 02:58 PM
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Maybe tebling will have an open house sometime so some of us locals can check it out his new gear? <cough, cough>
My HT isn't really show worthy at the moment (my Axiom QS8s are sitting on windowsills, gah!) but I'll tell you what... I'll bring my "new" sub, amp, and gramma to *your* place the next rainy weekend we're both free! Dual turbos and 1x gramma for testing! You bring the popcorn and movie

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post #2644 of 2647 Old 07-28-2014, 09:22 PM
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My HT isn't really show worthy at the moment (my Axiom QS8s are sitting on windowsills, gah!) but I'll tell you what... I'll bring my "new" sub, amp, and gramma to *your* place the next rainy weekend we're both free! Dual turbos and 1x gramma for testing! You bring the popcorn and movie
Well, I keep threatening to host a GTG one day - maybe this will finally convince me to do so. Maybe we could convince Mark and/or Kevin to fly out here to make sure the subs are set up correctly? <cough, cough x2>

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...the next rainy weekend...
Sorry, this coming weekend is too soon! (That's a Seattle-area joke for you non-locals... )

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post #2645 of 2647 Old 07-29-2014, 09:22 AM
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Watched The Book Thief last night. The scene with the air-raid over Germany. Wow - I've never had so much bass in my house.

I need to do something about that blue light on the Dayton amp. It's the brightest light on my rack by far! I've ordered some lightdims. Hopefully that helps.
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post #2646 of 2647 Old 07-29-2014, 10:51 AM
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Glad your enjoying it

I am kind of surprised that over the years I havent seen/had more complaints about that bright blue light.

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Originally Posted by NNate View Post
Watched The Book Thief last night. The scene with the air-raid over Germany. Wow - I've never had so much bass in my house.

I need to do something about that blue light on the Dayton amp. It's the brightest light on my rack by far! I've ordered some lightdims. Hopefully that helps.

Kevin
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Motor City Custom Audio
Bringing you Custom subwoofer kits, with flames if you want
Onix and Melody Valve Hi Fi Audio Dealer serving the Midwest and Canada
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post #2647 of 2647 Old 07-29-2014, 10:55 AM
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I will post my impressions of those lightdims when I get them. We'll see how well they work on the Dayton - the LED sticks out so I'm not sure.

I could use some electrical tape, but I do want to see some indication everything's on and working.
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