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Author Topic: Big rank peak at 128 hz  (Read 2576 times)

jwhynot

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Big rank peak at 128 hz
« on: April 29, 2007, 10:24:33 pm »

Hey guys -

My workspace is in a living room, rented house, you know the drill.

I have some decent treatments in the room, and I'm planning to pack some of Ethan's traps in there too - but I wonder about trying to tamp down this ringing loud peak at 128 first.  It's most apparent in my chair unfortunately.

What's a good solution?  Resonator of some sort?

Open to suggestions here
Thanks
JW
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Tom C

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Re: Big rank peak at 128 hz
« Reply #1 on: April 30, 2007, 12:02:45 pm »

jwhynot wrote on Mon, 30 April 2007 04:24

Hey guys -

My workspace is in a living room, rented house, you know the drill.

I have some decent treatments in the room, and I'm planning to pack some of Ethan's traps in there too - but I wonder about trying to tamp down this ringing loud peak at 128 first.  It's most apparent in my chair unfortunately.

What's a good solution?  Resonator of some sort?

Open to suggestions here
Thanks
JW


I don't know your room's dimensions, but 128 Hz seems to be the
typical ringing between floor and ceiling.
I'd put an appropriate hanging broadband (bass-) absorber on the
ceiling above your chair (4" and more) and (depending of the
room's height) play around with the absorber/ceiling distance
until it sounds (and probably measures) good.

Tom
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franman

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Re: Big rank peak at 128 hz
« Reply #2 on: May 06, 2007, 10:29:00 pm »

Good observation Tom.. and good advice as well.
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jwhynot

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Re: Big rank peak at 128 hz
« Reply #3 on: May 07, 2007, 03:40:21 am »

Thanks guys, that's what I reckoned.

I have an absorber right above my head but I'm pretty sure it's not efficient (or massive) enough.

Since it's just the one frequency, does it make sense to use a resonant device of some sort?  Slot absorber?  Helmholtz?

Or should I just call Ethan and get one of his traps up there?

JW
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matucha

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Re: Big rank peak at 128 hz
« Reply #4 on: May 07, 2007, 05:10:15 am »

I'd first fill all the corners (possible) with rockwool (or 703) before building any tuned device.
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Tom C

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Re: Big rank peak at 128 hz
« Reply #5 on: May 07, 2007, 06:39:45 am »

jwhynot wrote on Mon, 07 May 2007 09:40

Thanks guys, that's what I reckoned.

I have an absorber right above my head but I'm pretty sure it's not efficient (or massive) enough.

Since it's just the one frequency, does it make sense to use a resonant device of some sort?  Slot absorber?  Helmholtz?

Or should I just call Ethan and get one of his traps up there?

JW


I can only speak for my room, but to have a measurable effect in
my room a tuned absorber would have had about the same size as a
broadband absorber, so I went broadband.

Tom
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Ethan Winer

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Re: Big rank peak at 128 hz
« Reply #6 on: May 08, 2007, 01:54:37 pm »

matucha wrote on Mon, 07 May 2007 05:10

I'd first fill all the corners (possible) with rockwool (or 703) before building any tuned device.


Just to be clear, the traps my company sells are broadband, not tuned.

--Ethan

maccool

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Re: Big rank peak at 128 hz
« Reply #7 on: May 10, 2007, 05:31:48 pm »

Good to see you back John, I hope things are going well for you since the fire.

I have the same rank peak which stuffs my acoustic guitar recordings, and I'm going to fix it with broadband absorption on the ceiling as Tom suggests.
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jwhynot

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Re: Big rank peak at 128 hz
« Reply #8 on: May 11, 2007, 12:57:07 am »

My vertical corners are mostly killed already - using a variety of methods.

I think it's a matter of some realtraps products.

Ethan - thanks for responding - I know your products are broadband.

Will get in touch when the smoke clears on the current work - in the next 3-4 weeks.

Thanks all
JW

PS Thanks maccool - yes things are just great 16 months after the fire.
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