Dual subs vs single sub - Page 2 - AVS Forum
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post #31 of 35 Old 07-15-2012, 03:00 AM - Thread Starter
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Quote:
Originally Posted by dstew100 View Post

What SPL meter are you using. It should not move around that much, maybe a tad but not much. My sub moves around a bit but my RadioShack meter is not very reliable for that.
Could be a defective unit. Given what you are reporting you either a) are not used to a calibrated system and should give it some time or b) have a defective unit. Running some of the tests the folks are suggesting (different meter same system and placement, same meter different calibrated system) can help identify/verify the issue is there is one.
Is your system outlined somewhere? Where? If not what are your speakers and other equipment?
EDIT: My mains and surrounds do not bounce around on my meter. Also set the meter on Slow and C weighting.
I use RS meter just like you. When calibrating fronts and surrounds the meter works fine, only on Sub that it goes mad. My setup consists of Jamo D600THX with D650 subs x2 and D600 Sub THX x1. Processor is Onkyo 5508 and 5 monoblock Marantz MA700 amps.

My point is that i cannot calibrate levels on the subs with a RS meter. Very unrealiable for that as you confirmed in your answer. thank you.
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post #32 of 35 Old 07-15-2012, 08:26 AM
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I have the Paradigm DSP-3400 and DSP-3200 subwoofers....would it be a mistake to incorporate a SVS PB13-Ultra into my home theater?? I know not mixing subs is not supposed to be done but I feel like I am missing some deep bass and want the SVS Ultra! smile.gif
Anyone with experience mixing subs? Do or dont?
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post #33 of 35 Old 07-15-2012, 09:44 AM
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Quote:
Originally Posted by joebuzz View Post

I use RS meter just like you. When calibrating fronts and surrounds the meter works fine, only on Sub that it goes mad. My setup consists of Jamo D600THX with D650 subs x2 and D600 Sub THX x1. Processor is Onkyo 5508 and 5 monoblock Marantz MA700 amps.
My point is that i cannot calibrate levels on the subs with a RS meter. Very unrealiable for that as you confirmed in your answer. thank you.

I still use the SPL meter, well just got a new AVR (not calibrated yet) so not sure I will need to now but we will see. Just to clarify though With my rythmik the SPL bounces around 2-3 dbs, I just aim for the middle. My old sub bounced around more, maybe 4-5 dbs but I still just aimed for the middle. I don't understand why you are getting that much fluctuation. Perhaps try with just one sub just to see if it's got something to do with the multi-sub interaction (does one sub fluctuate 10+dbs?). That much fluctuation has not been my experience.

Also, on my last post I confused you with another series of posts I was following so I apologize, the "not used to calibrated system" comment didn't make any since.
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post #34 of 35 Old 07-16-2012, 12:11 AM - Thread Starter
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Quote:
Originally Posted by dstew100 View Post

I still use the SPL meter, well just got a new AVR (not calibrated yet) so not sure I will need to now but we will see. Just to clarify though With my rythmik the SPL bounces around 2-3 dbs, I just aim for the middle. My old sub bounced around more, maybe 4-5 dbs but I still just aimed for the middle. I don't understand why you are getting that much fluctuation. Perhaps try with just one sub just to see if it's got something to do with the multi-sub interaction (does one sub fluctuate 10+dbs?). That much fluctuation has not been my experience.
Also, on my last post I confused you with another series of posts I was following so I apologize, the "not used to calibrated system" comment didn't make any since.
Not a problem my friend, we are here to help. Sure its strange to see a big flactuation but it is due to the RS meter i have. This is a cheapo version i bought from the net, so maybe that is why. Once i got a proper SPL meter and never had an issue, seems i have to contact my cousin again so that he gives it to me just for calibration. These SPL meters are very expensive and i really cannot afford one so i have to lend one haha.

Anyway on the other speakers it works fine, and Audessey at least is not making a mess out of the levels, i only tweaked the surr -.05db and increased the right channel by .05db, the rest was spot on. Same position and same equipment so i concluded that the reason for this is the SPL meter i have. thank you.
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post #35 of 35 Old 07-16-2012, 12:17 AM - Thread Starter
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Quote:
Originally Posted by Stylz25 View Post

I have the Paradigm DSP-3400 and DSP-3200 subwoofers....would it be a mistake to incorporate a SVS PB13-Ultra into my home theater?? I know not mixing subs is not supposed to be done but I feel like I am missing some deep bass and want the SVS Ultra! smile.gif
Anyone with experience mixing subs? Do or dont?
My experience is that no one has experience. You try, listen and if you like it go for it. This hobby has some rules that we have to stick to, but when it comes to equipment mix and match as i call it, your judge is what you hear and like. Remember, this is home cinema on a personalized level, and everyone has a personal taste and is looking for something particular, so trust your ears and see what you like most. My example is clear, i have the processor from Onkyo, amps from Marantz, speakers from Jamo, but for me the end result is great and i am very happy with the setup i have.

Try it out and if you like it go for it that is the best opinion i can give you. thanks.
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