Setting up LOWPASS and CROSSOVER for my system

[CrazyEightyNine]

I read all about setting up lowpass and crossover but I guess I'm just not getting it. Any help?

My Equipment:

Yamaha 7.2 Receiver RX-V863 (bi-amped for my 2 fronts)

Klipsch RB-61 (fronts), RC-52 (center), RS-42 (rears), RW-10d (sub)

-For the sub I can set the LOWPASS from 40hz - 120z (by 5s) or "off"
SPECS: Freq. Response 28-120Hz +/-3dB and 260 watts continuous RMS wattage

-For the receiver I can set the CROSSOVER to (40, 60, 80, 90, 100, 110, 120,160, or 200hz)
SPECS: RMS Output Power (20Hz - 20kHz) 105W x 7

-For the Speakers
FRONTS: Freq. Response 43Hz-23kHz +/-3dB (100W RMS)

CENTER: Freq. Response 67Hz-23kHz +/-3dB (125W RMS)

REARS: Freq. Response 52Hz-23kHz +/-3dB (75W RMS)




*NOTE the sub cable uses a Y-adapter before it goes into the 2 RCA jacks on the sub

*ALSO I don't really understand "PHASE" on my sub but at the moment its at 0 degrees and my subwoofer is in the front left of my system. Is that correct?

[Big Daddy]

• Set all your speakers to small.
• Set the high pass filter (crossover) for the fronts to 60Hz or 80Hz.
• Set the high pass filter for the center and rears to 80Hz.
• Set the low pass filter of the subwoofer to 120Hz.
• On the back of the subwoofer, turn the crossover knob all the way up to its maximum point.
• On the back of the sub, turn the level to around 50%, no higher than 75%.
• Play with the location of the subwoofer to get the best bass response for your primary listening position.
• Run the receiver's calibration program again.

To understand low pass and high pass filters, read A Guide to Bass Management and A Guide to Crossover Networks & Crossover Settings.

To understand phase and how to set it, read A Guide to Subwoofers. It is explained in the middle of the original post.

All of the above threads have stickies in the Subwoofers section. You may want to read the other sticky threads there. There is also a sticky thread in the Speakers section on Impedance of Speakers that may be of interest to you.

[crackinhedz]

the subwoofer can be just about anywhere in the room. Normally, you want the lowpass filter on the sub turned all the way up. In your case, 120Hz. Idealy, you would set the LFE/Sub lowpass level in the receiver itself.

I prefer to set my crossovers for the speakers at 80Hz, and lowpass for the subwoofer (receiver setting) to 80Hz.

[rpatt]

Originally Posted by Big Daddy

• Set all your speakers to small.
• Set the high pass filter (crossover) for the fronts to 60Hz or 80Hz.
• Set the high pass filter for the center and rears to 80Hz.
• Set the low pass filter of the subwoofer to 120Hz.
• On the back of the subwoofer, turn the crossover knob all the way up to its maximum point.
• On the back of the sub, turn the level to around 50%, no higher than 75%.
• Play with the location of the subwoofer to get the best bass response for your primary listening position.
• Run the receiver's calibration program again.

To understand low pass and high pass filters, read A Guide to Bass Management and A Guide to Crossover Networks & Crossover Settings.

To understand phase and how to set it, read A Guide to Subwoofers. It is explained in the middle of the original post.

All of the above threads have stickies in the Subwoofers section. You may want to read the other sticky threads there. There is also a sticky thread in the Speakers section on Impedance of Speakers that may be of interest to you.

If you run the receiver's calibration program again won't that undo the things you set like speaker size, etc?

[FreddieFerric]

Originally Posted by rpatt

If you run the receiver's calibration program again won't that undo the things you set like speaker size, etc?

He has a Yamaha, so I don't know the answer. On my Denon, however, the answer would be an emphatic yes.

I notice the posts are at like 3:30 a.m. Anyone would be a bit bleary at those extreme hours. Dudes, ever hear of a concept called sleep.

[Fors*]

Originally Posted by rpatt

If you run the receiver's calibration program again won't that undo the things you set like speaker size, etc?

Yes it can, but the calibration program resets the distances of your speakers and sub. So, if you have moved the sub before this, you need to re-run the calibration again to obtain the proper sub distance. Just right down your settings before re-running it, so you can make any necessary adjustments to your speaker and/or sub .

[erict]

Originally Posted by BluRayFred

He has a Yamaha, so I don't know the answer. On my Denon, however, the answer would be an emphatic yes.

I notice the posts are at like 3:30 a.m. Anyone would be a bit bleary at those extreme hours. Dudes, ever hear of a concept called sleep.

Not sure but always have noticed the time is off. Now I posted this at 4:26pm and look at the time the forum says I posted

[rpatt]

I notice the posts are at like 3:30 a.m. Anyone would be a bit bleary at those extreme hours. Dudes, ever hear of a concept called sleep. [/QUOTE]

I'm posting from Saudi Arabia which is 10-Hrs ahead of PST. So you'll always see strange posting hours from me.

[erict]

Originally Posted by rpatt

I notice the posts are at like 3:30 a.m. Anyone would be a bit bleary at those extreme hours. Dudes, ever hear of a concept called sleep.

I'm posting from Saudi Arabia which is 10-Hrs ahead of PST. So you'll always see strange posting hours from me.[/QUOTE]

It can't be PST because if you look at my post it shows 4 hours ahead. If it was PST the time would show 1:26pm for me, I'm EST.

[rpatt]

Originally Posted by erict

I'm posting from Saudi Arabia which is 10-Hrs ahead of PST. So you'll always see strange posting hours from me.

It can't be PST because if you look at my post it shows 4 hours ahead. If it was PST the time would show 1:26pm for me, I'm EST.[/QUOTE]

I'm posting this now at 7:33 PM Saudi time which is GMT(+3). PST is GMT(-8).

[poogie]

I'm still confused with these settings.

My set up:

1. LFE in from my onkyo 805
2. Receiver bass management set to "small"
3. Receiver subwoofer set to "yes"
4. Receiver Front, center, and surround set to "100 Hz"
5. Receiver Subwoofer set to "100 Hz"

Is these settings correct as far as no "audio hole"?

[erict]

Originally Posted by poogie

I'm still confused with these settings.

My set up:

1. LFE in from my onkyo 805
2. Receiver bass management set to "small"
3. Receiver subwoofer set to "yes"
4. Receiver Front, center, and surround set to "100 Hz"
5. Receiver Subwoofer set to "100 Hz"

Is these settings correct as far as no "audio hole"?

With those settings you wont have any "audio hole". You're front's will handle anything 100hz and above while you're sub will handle anything 100hz and below. Now if you had you're front's set at 100hz and you're sub at 80hz then you would have a 20hz hole.

[poogie]

Originally Posted by erict

With those settings you wont have any "audio hole". You're front's will handle anything 100hz and above while you're sub will handle anything 100hz and below. Now if you had you're front's set at 100hz and you're sub at 80hz then you would have a 20hz hole.

Thanks Erict.

[StimpsonJCat]

Originally Posted by poogie

I'm still confused with these settings.

My set up:

1. LFE in from my onkyo 805
2. Receiver bass management set to "small"
3. Receiver subwoofer set to "yes"
4. Receiver Front, center, and surround set to "100 Hz"
5. Receiver Subwoofer set to "100 Hz"

Is these settings correct as far as no "audio hole"?

The 5th setting is a LPF of the LFE and has nothing to do with the 4th setting which is a cross over.

The LPF of the LFE is usually set to 120 Hz because the LFE channel doesn't go above 120 Hz. Keep in mind the 5th setting only applys to the LFE and not the bass from the other channels.

The 4th setting (speaker cross over) sends the bass (from the speakers channel) below the cross over to the sub.

100 Hz for a cross over is fine, but you might get localization depending on your sub placement and room environment above 80 Hz.

If you have an "audio hole" depends on how low your speakers can go in relation to their cross over. If you make the cross over around 10 db above your speakers low frequency capability or above you should not have any "holes".

But, if you set the LPF of the LFE to 100 Hz the sub is not getting the sound from above 100 Hz to 120 Hz from the LFE channel.

[poogie]

Originally Posted by StimpsonJCat

The 5th setting is a LPF of the LFE and has nothing to do with the 4th setting which is a cross over.

The LPF of the LFE is usually set to 120 Hz because the LFE channel doesn't go above 120 Hz. Keep in mind the 5th setting only applys to the LFE and not the bass from the other channels.

The 4th setting (speaker cross over) sends the bass (from the speakers channel) below the cross over to the sub.

100 Hz for a cross over is fine, but you might get localization depending on your sub placement and room environment above 80 Hz.

If you have an "audio hole" depends on how low your speakers can go in relation to their cross over. If you make the cross over around 10 db above your speakers low frequency capability or above you should not have any "holes".

But, if you set the LPF of the LFE to 100 Hz the sub is not getting the sound from above 100 Hz to 120 Hz from the LFE channel.

Let me repeat this back to you to make sure I understand. Set the low pass filter setting of the sub higher than high pass filter of the speaker channels to prevent localization.

[poogie]

Originally Posted by Big Daddy

• Set all your speakers to small.
• Set the high pass filter (crossover) for the fronts to 60Hz or 80Hz.
• Set the high pass filter for the center and rears to 80Hz.
• Set the low pass filter of the subwoofer to 120Hz.
• On the back of the subwoofer, turn the crossover knob all the way up to its maximum point.
• On the back of the sub, turn the level to around 50%, no higher than 75%.
• Play with the location of the subwoofer to get the best bass response for your primary listening position.
• Run the receiver's calibration program again.

To understand low pass and high pass filters, read A Guide to Bass Management and A Guide to Crossover Networks & Crossover Settings.

To understand phase and how to set it, read A Guide to Subwoofers. It is explained in the middle of the original post.

All of the above threads have stickies in the Subwoofers section. You may want to read the other sticky threads there. There is also a sticky thread in the Speakers section on Impedance of Speakers that may be of interest to you.

Big Daddy, sorry to bother you but my subwoofer have two control knobs for high pass filter and low pass filter. Should I turn both knobs to its maximum position or just the low pass filter?

[poogie]

Originally Posted by Big Daddy

• Set all your speakers to small.
• Set the high pass filter (crossover) for the fronts to 60Hz or 80Hz.
• Set the high pass filter for the center and rears to 80Hz.
• Set the low pass filter of the subwoofer to 120Hz.
• On the back of the subwoofer, turn the crossover knob all the way up to its maximum point.
• On the back of the sub, turn the level to around 50%, no higher than 75%.
• Play with the location of the subwoofer to get the best bass response for your primary listening position.
• Run the receiver's calibration program again.

To understand low pass and high pass filters, read A Guide to Bass Management and A Guide to Crossover Networks & Crossover Settings.

To understand phase and how to set it, read A Guide to Subwoofers. It is explained in the middle of the original post.

All of the above threads have stickies in the Subwoofers section. You may want to read the other sticky threads there. There is also a sticky thread in the Speakers section on Impedance of Speakers that may be of interest to you.

Big Daddy, I'm really confused after I read your related post.

"Avoid an Audio Hole
A low-pass crossover frequency will block high frequency sound above the cutoff level. A high-pass crossover frequency will block frequencies below the cutoff level.

If you adjust the low-pass frequency of the subwoofer too far below the high-pass frequency, you could end up with a hole in between the low-pass and high-pass frequencies.

However, remember that crossover networks cut frequencies progressively. As a result, if, for example, the high-pass frequency for the small speakers is set at 100Hz, and you set the low pass frequency around 80Hz or 90Hz, you will most likely be ok. If, however, you set the low-pass frequency around 60Hz to 70Hz, then you would most likely end up with an audio hole. Can you really hear the difference? I will leave the decision up to you."

Can you tell me what settings of high pass filter higher and the low pass filter? Which setting is higher, low pass filter or high pass filter? I apologized coz my head is already spinning. Thanks for the help.

[Big Daddy]

Originally Posted by poogie

Big Daddy, sorry to bother you but my subwoofer have two control knobs for high pass filter and low pass filter. Should I turn both knobs to its maximum position or just the low pass filter?

My guess is that the high pass filter on the sub is for a situation such as a 2.1 setup with old school preamp/receiver, where you have to connect the speakers to the subwoofer. The high pass filter cuts the low frequencies from the speakers.

Many older subwoofers made in the 1980's and early 1990's had fixed crossover networks for this purpose. In most cases, the crossover frequency was fixed at 120Hz. I believe in HT applications, where all the speakers are connected to the receiver, the high pass filter does not play a role. It doesn't hurt to check the subwoofer' manual as each manufacturer does things differently.

[Big Daddy]

Originally Posted by poogie

Big Daddy, I'm really confused after I read your related post.

Can you tell me what settings of high pass filter higher and the low pass filter? Which setting is higher, low pass filter or high pass filter? I apologized coz my head is already spinning. Thanks for the help.

Make sure the LPF is equal or higher than HPF.

LPF >= HPF

[poogie]

Originally Posted by Big Daddy

Make sure the LPF is equal or higher than HPF.

LPF >= HPF

I really appreciate the patience. Looking forward on great sounding system. Thanks for the help.