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Go Back   Blu-ray Forum > Audio > Subwoofers


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Old 04-26-2013, 05:20 PM   #121
HAMP HAMP is offline
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Congrats on your new sub!!! Your signature looks different, did you get some new surrounds also?
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Old 04-26-2013, 05:24 PM   #122
hsox05 hsox05 is offline
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Quote:
Originally Posted by HAMP View Post
Congrats on your new sub!!! Your signature looks different, did you get some new surrounds also?
Thanks! Newegg had Polk 75ts on sale for 180 a piece so I went ahead and picked up a pair of those and moved everything else back a spot

From my understanding that'll be a moderate upgrade on the fronts over the monitor 70s... But the benefit is in the improved surround
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Old 04-27-2013, 09:40 PM   #123
Big Daddy Big Daddy is offline
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Originally Posted by hsox05 View Post
Question about the subcrawl. Is that a one spot fits all or when I get a new sub do I have to subcrawl again?

Reason I'm asking: right now I have a psw505. I ordered a PSA XV30 and am getting ready to rearrange my room. If I can use the Polk sub (which weighs about a quarter of the psa sub) it would be a lot easier, plus I can have the room setup the best way for when the monster actually arrives.

I'd much rather do the subcrawl with the psw than have to wait for the new one, if possible. But it the difference in the sub is going to cause a different sweet spot, I'll wait
The answer to your question is NO. The sub crawl may give you several locations that are optimal. You have to choose the location that is the most practical.
HT Room: Panasonic PT-AE8000, Epson 1080UB Proj., Mitsubishi 65" Diamond Series HD TV, Yamaha-RX-A3010 Rec., CinePro 6-Ch. Amp. (350 W/Ch, 8 Ohm), Proton D1200 Amp., Behringer EP4000 & EPX3000 Amps., Oppo BDP-83, Sony BDP-S790, Audio Technica Tuntable, Mitsubishi S-VHS, 2 Def. Tech. Super Towers w 15" subs, 1 Def. Tech. Center & 1 Martin-Logan Center, 2 Def. Tech. Surr. & 2 PSB Surr., 2 Cadence Presence, 2 Bose 901 Rears, 2 Modified HSU 12" Subs, 1 ED DIY 12" Sub, 1 ED DIY 15" Sub, Velodyne SMS-1 Subwoofer Equalizer, DirecTV HD, Monster HTS 5000 & APC H15 Power Conditioners.
Two-Channel Room: XiangSheng Tube Preamp., Carver TFM-45 Amp. (375 W/Ch), Behringer EPX4000 Amp., Onkyo CD player, Denon Turntable, Yamaha Tuner, 2 Vintage Polk RTA-15TL Speakers, 2 LCY 100 Super Tweeters, 2 DIY Folded Horn Super Towers with 15" Sub., 1 Modified AA HD-SUB12
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Old 09-12-2013, 06:49 AM   #124
Underdog Audio Underdog Audio is offline
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WOW! I must say your reputation certainly does precede you Big Daddy. I heard about you on the AVS Forum, but I ran into this post looking for the reasons why my dual subwoofer placement has fixed my issue with my bass. I had both of my subwoofers at the front of the room and was pretty disappointed with the frequency response I was getting in the very low end from like 35Hz to 20Hz. I had just moved into a house with a totally new room and it's kinda been a nightmare just trying to tame the modal ringing from my front speakers because they're so close to the wall. After I took care of that will some simple bass traps in the front corners of the room I found that all of my low bass was heard only in the back right corner of the room. I took one of my subwoofers and put it in the spot where I could hear all the bass and now I can hear bass that starts at 17Hz! Even though I was glad that I had remedied the problem, I wanted to know why. After reading your post it all makes sense now.
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Old 12-21-2014, 03:44 PM   #125
tacanmj tacanmj is offline
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I'm curious to know if my set up is ideal for proper bass management. I would take any advice. I set the towers to large and Xover to 80. Reciever set to LFE+
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Last edited by tacanmj; 12-21-2014 at 09:00 PM.
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Old 04-01-2015, 10:04 PM   #126
nikostis69 nikostis69 is offline
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Hello! This thread is really awesome!

I have added a sub recently to my PC audio setup in my room. The sound within the room is as I want it to be.

There is a side effect, though... Due to the room acting like a huge speaker cabinet, the LF exit the room to the rest of the house quite amplified.

Is there any way I can reduce this effect without affecting sound experience inside the room?
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Old 05-01-2015, 03:28 AM   #127
Mike7300 Mike7300 is offline
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Originally Posted by tacanmj View Post
I'm curious to know if my set up is ideal for proper bass management. I would take any advice. I set the towers to large and Xover to 80. Reciever set to LFE+
I could be wrong but i would think you want your towers set to small if you have a subwoofer hooked up so that the sub is handling the bass.
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Old 05-01-2015, 05:08 PM   #128
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Quote:
Originally Posted by tacanmj View Post
I'm curious to know if my set up is ideal for proper bass management. I would take any advice. I set the towers to large and Xover to 80. Reciever set to LFE+
Quote:
Originally Posted by Mike7300 View Post
I could be wrong but i would think you want your towers set to small if you have a subwoofer hooked up so that the sub is handling the bass.
He's got his AVR set to "LFE+" which is sending bass to the sub and the mains.

This is a relatively uncontrolled duplication of bass creation, IMHO not "ideal for proper bass management." Set the mains to "small," set crossover to 80Hz or 100Hz (lower if your mains can handle low bass consistently and accurately), then turn LFE+ off. You can get test files at audiocheck.net to determine any nulls in your mains' response, etc. When set up well, I believe you should hear a nice smooth descending tone from all the speakers without a clear dip or boost anywhere near the cross over point.*

Quote:
Originally Posted by nikostis69 View Post
Hello! This thread is really awesome!

I have added a sub recently to my PC audio setup in my room. The sound within the room is as I want it to be.

There is a side effect, though... Due to the room acting like a huge speaker cabinet, the LF exit the room to the rest of the house quite amplified.

Is there any way I can reduce this effect without affecting sound experience inside the room?
Your sub is clearly interacting with the structure. Try doing the "subwoofer crawl" (Google for it) and determine the ideal location for the sub, then place it there, tune it down so that it's blending in with the other speakers but not resonating with the walls. *

* There are several articles on how to do this stuff at audioholics.com. Some are old (8 years) but still relevant.
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tacanmj (11-29-2015)
Old 11-29-2015, 07:53 PM   #129
tacanmj tacanmj is offline
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I have since done some AVR changes, according to opinion. And I have done a "crawl" to find null spots and found better homes for my subs. Thank you.
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Old 12-06-2015, 06:01 PM   #130
Auditor55 Auditor55 is offline
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I have since done some AVR changes, according to opinion. And I have done a "crawl" to find null spots and found better homes for my subs. Thank you.
The crawl test, in some rooms, is impractical. For example, how you going to lift up a PB13 Ultra and put in on your seating location and walk around the room.

Secondly, if you move the sub to one location to another, you're going to create a null in another location.
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