High Crossover Setting Questions - AVS Forum
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post #1 of 8 Old 11-03-2013, 12:55 AM - Thread Starter
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I have Infinity tower Beta 50's for my L/R and Infinity OWS-1's for my sides and rears. Center Channel is Infinity C-351. Sub is Rythmik LV12R. After doing the MCACC calibration it set the crossover to 150. I've been demoing some bass scenes and the bass is incredible.

Should I reset the crossover lower?
Will this affect the bass this amazing sub puts out?
What advantages would I gain?
Thanks.

The beta 50's can get down to 35
OWS-1's down to 70
C-351 down to 80

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post #2 of 8 Old 11-03-2013, 01:07 AM
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If MCACC set the xo to high, try it at 80 or 100 Hz. Is it wrong, not necessarily depending on your speaker and sub room response. Here is an example of the XO range:
Main L and R 35-20 kHz
center 70-22 kHz
surrounds 70-20 kHz
Subwoofer 16Hz -200

XO region 80-200 based on the least capable speaker(surround). Stay 10-15 Hz higher than the least capable speaker to avoid stress out any of the speakers

A large number of subwoofer will have their highest spl in the 60-80 Hz region Keeping the xo above 60 Hz will allow you to take full advantage of the subwoofer sweet spot in it frequency response..

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post #3 of 8 Old 11-03-2013, 01:18 AM - Thread Starter
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Thanks for the response. Will setting the crossover to 80 make everything sound better while keeping the bass incredible like it is?

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post #4 of 8 Old 11-03-2013, 02:04 AM
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Your infinity beta towers have a -3dB point at 35Hz. Either your mains placement is very wrong or you didn't run MCACC properly for pioneer to set 150Hz crossover. That's way too high.
Room acoustics finally determine the -3dB point, but 150Hz is way off for those speakers and will make your sub localized. Reduce the crossover for the mains to 90Hz max and use LFE input on LV12R and check how it sounds to you.

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post #5 of 8 Old 11-03-2013, 03:35 AM
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I agree, 150hz seems way too high. I would go with the standard 80hz and see how it sounds.
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post #6 of 8 Old 11-03-2013, 06:07 PM
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MCACC has set my xo at 100 Hz with the Klipsch RF 7's which go down to 32 or 34 Hz and are rated 250/1000 watts RMS/peak. I set these large 90 lb speakers to small in the system and use MCACC bass management. I have used the speakers from a xo of 50 to 100 Hz with equally good results. I favor a xo in the 60-100 Hz range to take full advantage of my subwoofers.

I know some people like letting their mains go as low as possible but, a good sub will outperform the mains in the bass department unless the mains have a 12-15 in bass driver. Also, headroom is greatly increased in the system for better midrange performance. This is especially true if one is using class A or AB amps/avr. The key point is a nice overlap of the mains and subs for seamless integration. This depends on the subs location compared to the mains and the listener. A sub close to the mains can easily have a higher xo for the system.

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post #7 of 8 Old 11-04-2013, 01:30 PM
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Quote:
Originally Posted by braveheart123 View Post

Your infinity beta towers have a -3dB point at 35Hz. Either your mains placement is very wrong or you didn't run MCACC properly for pioneer to set 150Hz crossover. That's way too high.
Room acoustics finally determine the -3dB point, but 150Hz is way off for those speakers and will make your sub localized. Reduce the crossover for the mains to 90Hz max and use LFE input on LV12R and check how it sounds to you.

Pioneers use a global crossover.

So the AVR was probably setting the crossover off of the center or the surrounds one of which was not performing well in its location.

I currently use a 120hz crossover on my small Superzeros and I don't have any localization issues. My sub is in the front right corner though.

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post #8 of 8 Old 11-04-2013, 01:36 PM
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If the receiver set the crossover to 150hz then its best not to lower it because there could be a null or something weird happening below that frequency. I would run MCACC again just to make sure. You can leave it at 150hz if you like it, the only bad thing is that the subs start to become localized at such a high crossover.

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