Please help with crossover settings - AVS Forum
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post #1 of 4 Old 08-02-2007, 03:16 PM - Thread Starter
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Hi,
I want to set up my crossover frequencies correctly for my front main, center and sub on my processor. I don't know what any of these frequencies mean. Here are my options on the onscreen menu:

40hz,60hz,80hz,100hz,120,hz150hz,200hz

The freq. specs for the mains are 30hz and 42khz
The center feq. specs are 48hz and 42khz
The sub freq. specs. are 17hz and 40/140hz

This is all greek to me. I just know the rears need to be at 100hz and if I have the x-over freq. wrong my imaging will suffer.

If this helps my current system consists of the following: B&W DM604S3, LCR600 S3, DM601S3, ASW675, Rotel RB1080 2ch 200W for the DM604S3( jumpers removed and all 4 posts are connected to the RB1080), Harmon Kardon 2ch 100W High current HK870 amp for the rear DM601S3 (jumpers in place), Harman Kardon High Current PA2400 2ch 175W For The LCR600S3 (the jumpers on the LCR600 were removed and 1 Channel is for the high ferq.& the other ch is connected to the low freq. of the x-over).

For processing I own a Rotel RSP1068.
My Dvd/Cd Player is a Sony DVPN9100ES. For power filtration I own a Monster power 3500MKII power center, and my display is a Pioneer Elite Pro1140 50" Plasma. All of my interconnects are Audiouest Diamondback cables, and all of my speaker wire is Audioquest Type 4 solid copper wire with banana plug terminals. My sub wire is an Audioquest Sub-1 cable with a y adapter going in to the sub's 2 inputs

Thanks in advance for all of your help
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post #2 of 4 Old 08-02-2007, 04:10 PM
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IMO, start with all crossovers set at 80Hz, be sure the frequency adjustment on the sub (if it has one) is set to the highest setting.

You might be able to go down to 60 or even 40 on the front, but I'd not go lower than 60 on the center.

Again though, I'd start at 80 and then start playing with the lower settings from there.

Just because there is a knob doesn't mean you should turn it.
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post #3 of 4 Old 08-02-2007, 05:37 PM - Thread Starter
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Quote:
Originally Posted by whoaru99 View Post

IMO, start with all crossovers set at 80Hz, be sure the frequency adjustment on the sub (if it has one) is set to the highest setting.

You might be able to go down to 60 or even 40 on the front, but I'd not go lower than 60 on the center.

Again though, I'd start at 80 and then start playing with the lower settings from there.

Ok, so th sub should be at 200Hz then?

Oh, and how will I know if 40 isn't right? What tells should I listen for?

Also, is it right that all speakers should be set to small for hometheater and the fronts should be set to Large only for music?

thanks
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post #4 of 4 Old 08-02-2007, 08:52 PM
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Quote:
Originally Posted by gvelez1 View Post

Ok, so th sub should be at 200Hz then?

Oh, and how will I know if 40 isn't right? What tells should I listen for?

Also, is it right that all speakers should be set to small for hometheater and the fronts should be set to Large only for music?

thanks

Keep the sub xover on the sub itself at 200hz or some subs have a "crossover" switch to disable it completely (ie you are using the pre-pro xover and not the sub xover).

Do a search on "Bass Management" here, or check out the articles at www.hometheaterhifi.com. The cross-over can vary depending on your speakers, sub , room and how the speakers are setup in the room. The best crossover(s) enables your speakers to achieve a flat freq response (over as wide a freq range as possible) - ie your system generates a 50Hz signal at the same vol as a 12Khz signal.

Get a setup dvd or cd (Avia or DVE are good setup DVDs to have).

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