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#7495 - 04/10/03 12:33 PM Re: Stereo Subwoofers?
soundhound Offline
Desperado

Registered: 04/10/02
Posts: 1857
Loc: Gusev Crater, Mars
duplicate post...

[This message has been edited by soundhound (edited April 10, 2003).]

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#7496 - 04/10/03 12:52 PM Re: Stereo Subwoofers?
D'Arbignal Offline
Desperado

Registered: 02/23/03
Posts: 327
Loc: NJ, USA
Quote:
Originally posted by soundhound:
I would try to place the dedicated LFE sub as close to the mains as you can, wherever that is. That way, at least any common bass from the mains and the LFE would reinforce each other by way of mutual coupling.


Hoo boy, that should prove challenging!

Thanks for the suggestion. I'll try to act on your advice if my room will permit me.

Jeff

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#7497 - 04/11/03 08:13 PM Re: Stereo Subwoofers?
pleary Offline
Gunslinger

Registered: 03/15/03
Posts: 22
Loc: Plano, TX, US
I'm considering using stereo subs with the 950/ICBM/755.

Anyone care to recommend a pair of subs that would work well in a 16' x 14' x 9' listening room with large, full-range (down to 30hz) mains? Assume that they would be used 50/50 music/HT and that I'd like to achieve value that's on par with the Outlaws.

Thanks in advance.

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#7498 - 04/11/03 11:54 PM Re: Stereo Subwoofers?
D'Arbignal Offline
Desperado

Registered: 02/23/03
Posts: 327
Loc: NJ, USA
Quote:
Originally posted by pleary:
I'm considering using stereo subs with the 950/ICBM/755.

Anyone care to recommend a pair of subs that would work well in a 16' x 14' x 9' listening room with large, full-range (down to 30hz) mains? Assume that they would be used 50/50 music/HT and that I'd like to achieve value that's on par with the Outlaws.

Thanks in advance.


Pleary,

I just ordered a sub from my friend Brian at Rutledge Audio Design (http://www.rutledgeaudiodesign.com). He makes a great 19x19x19 cube that extends down to 25 Hz +/- 3db and is -8 dB at 20 Hz. In terms of cost, you can get it for $580 for the 150 watt model or for $20 more, you can get a 250 watt model! An incredible bargain.

Check out his site and tell him Jeff sent you!

Jeff

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#7499 - 04/12/03 06:14 PM Re: Stereo Subwoofers?
fmcorps Offline
Gunslinger

Registered: 06/06/02
Posts: 197
Loc: Fargo, ND, USA
Quote:
Originally posted by pleary:
[B]
Anyone care to recommend a pair of subs that would work well in a 16' x 14' x 9' listening room with large, full-range (down to 30hz) mains? Assume that they would be used 50/50 music/HT and that I'd like to achieve value that's on par with the Outlaws.
B]


Check out SVS subs (svsubwoofers.com) , they are an excellent value. I've got one of thier 16-46PCi's in my system, and it blew away the competition. (I was demoing a paradigm PW2200...which I had demoed against every subwoofer at my dealers shop...which included subs from Velodyne, M&K, Paridigm, Paridigm Referance, and Boston.) The PW is an excellent sub...ratteling the walls of my house to the foundation. It was a new sub (man, I do love my local shop), so unfortunatly it was a little "stiff" and a little sloppy in the accuracy department. (Which I do expect would have tightend up a bit after the cone broke in.)

The SVS was a better performer then the Paridigm. The only setback is that the SVS is a very odd duckling. (It looks like a giant black water heater) The 16-46PCi is taller then my monitor 11's. However since I'm a swinging batchelor...I don't have anyone complaining! (Except the neighbors).

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#7500 - 04/12/03 06:39 PM Re: Stereo Subwoofers?
eurorom Offline
Gunslinger

Registered: 03/04/02
Posts: 96
Loc: El Paso Texas
Well I am the proud owner of a JBL-PRO Cinema Subwoofer in my room it is flat at 25hz and this subwoofer really shakes my home, I am using an Adcom 555 in bridge mode to power this beast.
--------------------------------------------------------------------------------

4641
Subwoofer 4641 Specification Sheet

Single 460 mm (18 in) High Power Subwoofer.
Approved by Lucasfilm, Ltd. for THX® system installations.





Low Frequency Driver: 2241H
Frequency Range: 25 Hz - 500 Hz (-10 dB)
Power Capacity (Continuous Pink Noise): 600 Watts
Power Capacity (Continuous Program): 1200 Watts
Sensitivity: 98 dB SPL (1W, 1m, 3.3ft.)
Crossover Frequency: 80-150 Hz recommended
Nominal Impedance: 8 Ohms
Dimensions (HxWxD): 1010 x 674 x 450 mm (39 3/4 x 26 1/2 x 17 3/4 in)
Net Weight: 60 kg (131 lb)

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#7501 - 04/12/03 09:28 PM Re: Stereo Subwoofers?
soundhound Offline
Desperado

Registered: 04/10/02
Posts: 1857
Loc: Gusev Crater, Mars
That's similar to the 18" JBL woofers I use, which is the 2245H. The difference is the 2245H has a foam surround and has a bit lower resonance and low frequency limit of 20Hz for the driver alone. It gives up 3db of efficiency from the 2241H. They are in the 4645 subwoofer cabinet that I re-tuned for 12Hz. Playing together, they go down to around 16Hz flat.

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#7502 - 04/13/03 12:26 AM Re: Stereo Subwoofers?
alphanstein Offline
Gunslinger

Registered: 01/27/03
Posts: 116
Loc: San Diego, CA
Thanks Soundhound for the stereo subs idea. My l&r mains each have 12" subs, so I tried it and you know what, I could feel the difference from my listening position. So then I was wondering what to do about the LFE channel for movies and I just so happen to have a 15" dBX passive sub. Hmm, Outlaw 770 driving 7 channels, the 7th channel is really the same as the sixth, so I bridged those two and used the spare for the dBX (rated at 6 ohm) and now, I really have some serious earth rattling bass. Not boomy either, but tight and good extension.

There is a track on the Phantom Menace when they first get to the underwater city, something like the 7th or 8th chapter. Anyway, there is a bass line to this chapter that I never knew was there until I moved to this setup.

FYI, I have the dBX/LFE channel right up front with the other subs, but up under the stairs so the corner becomes a reflector/multiplier for the sub. My room is small to med sized.

I am hooked, I would recommend others give stereo subs a try. Kinda cool when the ship flys by in the movie and you can feel the bass line move with it from one side of the screen to the other. It does enhance the movie experience. And since I have the surrounds remixed for the subs in the LFE channel, I don't miss out by having the extra dBX sub.

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#7503 - 04/13/03 01:18 AM Re: Stereo Subwoofers?
bossobass Offline
Desperado

Registered: 08/19/02
Posts: 430
Loc: charlotte, nc usa
Quote:
Originally posted by alphanstein:
So then I was wondering what to do about the LFE channel for movies...

And since I have the surrounds remixed for the subs in the LFE channel, I don't miss out by having the extra dBX sub.


i'm lost. can someone help me out and explain what this post means?
_________________________
"Time wounds all heels." John Lennon

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#7504 - 04/13/03 01:46 AM Re: Stereo Subwoofers?
eurorom Offline
Gunslinger

Registered: 03/04/02
Posts: 96
Loc: El Paso Texas
You are correct sound these JBL_PRO are the real deal, your room is much bigger then mine so I use only one Subwoofer for the .1 Dolby Digital or DTS.(according to JBL theater requirements you need one 4641 for a room that is 700 M3 to be on the safe side)I think i mention my main speakers the GREAT JBL Studio Monitors 4430 and the 8330 for surrounds.I am just waiting to find a single 4430 for my center channel so that I can use all my front channel speakers at full range.

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