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    Invelos Forums->General: General Home Theater Discussion Page: 1 2  Previous   Next
Yamaha Subwoofer?
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DVD Profiler Unlimited Registrantdavidperez
Registered: March 18, 2007
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Does any body here have this type or even this exact subwoofer? I have 2 of them and I am wondering what your settings are on the cut off and the volume? Just trying to see if I am doing something wrong?
DVD Profiler Unlimited RegistrantFUBAR
It's Gonna Work
Registered: March 21, 2007
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Do you have anything beyond it just being described as a Yamaha Subwoofer?  A model number would be a good starting point.
Graham
DVD Profiler Unlimited Registrantdavidperez
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Sorry, I had the full intention of adding what kind of subwoofer and even a link to the wesite, but some work stuff got in the middle of everything and I forgot. Here is it:

http://www.yamaha.com/yec/products/productdetail.html?CNTID=200489&CNTYP=PRODUCT
DVD Profiler Unlimited Registrantdavidperez
Registered: March 18, 2007
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My problem, is this: I have 2 subs and they seem to bottom out every time a big explosion happens. I have my Sony receiver set to 0 on the level for the subwoofer but sometimes even ther it bottoms out. What cut off frequency do other folks set on the subs? Also what volume do they set their subs to? Thanks for any help
DVD Profiler Unlimited RegistrantFUBAR
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Are you saying you have 2 subs for one system?

It would be beneficial for you to tell us how the sub(s) are setup.  There are 4 knobs on the front, how do you have these set?

My initial suggestion is: On the front of your sub you should set the 2nd knob from the left to "movie" which should allow the low frequencies to get through as the "music" setting cuts out low frequencies.
Graham
DVD Profiler Unlimited Registrantnolesrule
Registered: 09/21/2000
Registered: March 15, 2007
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Have you properly calibrated your audio system?
DVD Profiler Unlimited RegistrantFUBAR
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Quoting nolesrule:
Quote:
Have you properly calibrated your audio system?


Of course he hasn't.
Graham
DVD Profiler Unlimited Registrantnolesrule
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Yeah, I know. Obvious. That's where he should start before anything else.

As for cutoff frequency, that's the crossover frequency which rolls off the top end to blend better with your other speakers. If you have a crossover already set in your receiver, you don't need to set it on the sub.
 Last edited: by nolesrule
DVD Profiler Unlimited Registrantdavidperez
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Nolesrule, I have not had it porperly calibrated, that is kind of were I am right now. This is what I have right now:

The 2 subs are across from each other at oposite ends of the room. The second button it set to Movie, the cut off is set to 60hz and the volume is set to 5. This is all on the subwoofer. 

On the receiver, the following related to the sub is as follows. The front speakers are set to small, I was told once to do this so that the recevier knows to send the low frequencies to the subs. The equalizer is on and the bass is set to 0. The D. Comp is set to Standard and the subwoofer level is set to -2.5. Setting to anything more that 0 will create some really bad distortion. When I switch to music with alot of bass, I have to set the level down to -5 so that the subs dont distort. Thanks for every ones help. David
DVD Profiler Desktop and Mobile RegistrantStar ContributorAiAustria
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Quoting davidperez:
Quote:
Nolesrule, I have not had it porperly calibrated, that is kind of were I am right now. This is what I have right now:

The 2 subs are across from each other at oposite ends of the room. The second button it set to Movie, the cut off is set to 60hz and the volume is set to 5. This is all on the subwoofer. 

On the receiver, the following related to the sub is as follows. The front speakers are set to small, I was told once to do this so that the recevier knows to send the low frequencies to the subs. The equalizer is on and the bass is set to 0. The D. Comp is set to Standard and the subwoofer level is set to -2.5. Setting to anything more that 0 will create some really bad distortion. When I switch to music with alot of bass, I have to set the level down to -5 so that the subs dont distort. Thanks for every ones help. David


Two subs oposite to each other? - Are they facing each other? - If this ist true, the setup can't work (except with a studio equalizer in front of them), since the bass waves of the two will interfere...

Anyway, did you try to use only one of them?

Concerning the Large/Small issue: if all speakers are in one line (else same problem as above) it is of no matter to the sub if the front speakers are set to large or small. It is a question of speaker capabilities and your personal preference which setting is better. I for myself prefer the large front speaker setting since the bass has more room with more speakers to deliver it...

Regards, AA
Complete list of Common Names  •  A good point for starting with Headshots (and v11.1)
DVD Profiler Unlimited Registrantcatheadman
Registered: March 13, 2007
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It might be worth your while to invest in a sound level meter ( approx $30 - $50 from Radio Shack ) and a copy of DVD Essentials or one of trhe other calibratrion tools.  These walk you step by step through audio setups as well as video.  Some receivers do this for you ( or attempt to! ) but unless you have a higher end receiver with a good microphone I've not seen great results from this. 

Subwoofers in particular can be difficult to set up - they are most affected by room size and configuration - just moving one a few feet can make all the difference in the world.  Even if someone else has the exact same woofer you have, they will probably be using very different settings than you need...
 Last edited: by catheadman
DVD Profiler Unlimited Registrantnolesrule
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Stop using the cutoff on the sub, and use the crossover in your receiver, so you aren't missing any higher bass frequencies in your setup.

Secondly, calibrate with Video Essentials. Pick up an SPL meter at radio shack, and a copy of the VE DVD. Then calibrate so all your speakers are at 75 dB from the primary seating area, and your sub reads 83-85 dB at the primary seating area ( the SPL meter is less accurate at lower frequencies of the sub).

Another issue will be placement of the subs and phase. It's possible you may be overdriving them because they are cancelling each other out in their current positions. You could play with the phases on them to see if it makes a difference, or you could try locating them in the same corner (corners usually work best, but not always).

One trick some people use for finding ideal subwoofer placement is to put the subwoofer in the listening position, and then go around the room till you find the spot where the sound coming from it is loudest. That spot would be the ideal placement for the sub.

Stacking subs or placing them next to each other are easier to set up than subs placed across the room from each other.
DVD Profiler Unlimited Registrantdavidperez
Registered: March 18, 2007
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i dont understand how having two subs or even the placement of the subs will make them bottom out. My subs are across the room from each other. About 10 feet away from each other. How does that make them both bottom out? When I say that they are bottoming out, I mean that they sound liek they are getting tooooo much bass coming to the. Is my EQ setting ok? nolesrule said to stop using cut off on the sub, how do I do that?
DVD Profiler Unlimited RegistrantStar ContributorLewis_Prothero
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Registered: May 19, 2007
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Quoting davidperez:
Quote:
i dont understand how having two subs or even the placement of the subs will make them bottom out. My subs are across the room from each other. About 10 feet away from each other. How does that make them both bottom out? When I say that they are bottoming out, I mean that they sound liek they are getting tooooo much bass coming to the. Is my EQ setting ok? nolesrule said to stop using cut off on the sub, how do I do that?

This has something to do with physics, amplitudes and waves. You have two soundsources emitting exactly the same waves and now depending on the frequency, the roomsize and the distance, you have two possibilities when these waves hit, either they flatten out each other (means this part of the frequency spectrum is not to be heard) or they level up (means this part of the frequency spectrum is overproportional loud) for a subwoofer this ends with too much bass.
You can easily check this effect in your bath tub (the principle is the same, is sound)
It all seems so stupid, it makes me want to give up!
But why should I give up, when it all seems so stupid?


Registrant since 05/22/2003
 Last edited: by Lewis_Prothero
DVD Profiler Unlimited Registrantdavidperez
Registered: March 18, 2007
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So Goblin, how do I resolve this? Take one sub away or change the phase on oen of them.
DVD Profiler Desktop and Mobile RegistrantDr. Killpatient
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Registered: May 19, 2007
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Re-read what nolesrules said above, he had several good sugestions.
 Last edited: by Dr. Killpatient
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