View Full Version : What am i doing wrong?


I L K E R
08-19-08, 01:54 PM
For the life of me i don't understand how this Hz thing works. Like i posted before, i have paradigm Studio 100's V4 for the mains with Paradigm Servo 15 v2 running from my rotel RSP 1068 and RMB 1095..

From what i am reading here, people are setting their subwoofer crossover at around 60 to 80Hz some even 40Hz at the receiver.

If i set mine anywhere near 40, 60 or even 80Hz my sub doesn't even move that much. I have to set my cross over from the Pre/Pro to 120Hz to get some base out of my Servo.

My mains are at between 60 to 80Hz..

Behind the sub the crossover is at Bypass... So i only let my receiver do the work..

I thought turning down the Hz for the subwoofer on the receiver or Pre/Pro gave you more punch? If i turn my down i get no bass.

What am i not understanding here? or what am i doing wrong?

The Phase on the sub is at "0" and the cross over is at Bypass....

So the receiver handles everything right???? So if i set the crossover on the Pre/Pro to 40Hz or 60Hz i should get bass??

So how come i have to turn it to 120HZ to fill the room?


can some one please explain...

thanks,

JetJockey1
08-19-08, 02:02 PM
Try setting the Receiver speaker settings to small (all of them) and start with 80 hz x-over. Make sure the sub is connected via the proper input, i.e., use the LFE input if you have one which will bypass the subs internal x-over.

Speakers set to large is probably the culprit here.

Good luck!

Kal Rubinson
08-19-08, 02:04 PM
What you are confusing is punch for correct balance. With the correct settings, the sub will only contribute at the lowest frequencies and its contribution will not be audibly distinguishable from that of the main speakers. In other words, you should not be aware of it as a separate contributor but, rather, that it should extend what you hear from the main speakers.

I am using Studio60s with a Servo15 and have crossovers in the 40-50Hz range. The Servo-15 does not seem to move much at all but, when called for, contributes powerfully.

How are you balancing the levels? By ear or meter or RTA? How are you determining the crossover?

I L K E R
08-19-08, 02:05 PM
Try setting the Receiver speaker settings to small (all of them) and start with 80 hz x-over. Make sure the sub is connected via the proper input, i.e., use the LFE input if you have one which will bypass the subs internal x-over.

Speakers set to large is probably the culprit here.

Good luck!

Thanks for the reply.. But all my speakers are set to small... I have 2 sub inputs from rotel RSP 1068 Pre/pro so thats what i use.

thirdeye11
08-19-08, 02:14 PM
Thanks for the reply.. But all my speakers are set to small... I have 2 sub inputs from rotel RSP 1068 Pre/pro so thats what i use.

Just to clarify, are you using the Sub1 pre-out from your RSP-1068? You should be using a 75 ohm cable (subwoofer cable or even component video will do the trick) and plug that into the LEFT subwoofer LFE input. Adjust the subwoofer level on your pre/pro to 0 db, and start with the subwoofer gain level at around 10:00 and turn up until you are happy with the level.

You might also adjust phase to 180 after doing all of this and A/B the two to determine which is best in your room.

Hope this helps!

-Chad

chood
08-19-08, 02:24 PM
I thought turning down the Hz for the subwoofer on the receiver or Pre/Pro gave you more punch? If i turn my down i get no bass.

reading this makes me think you don't understand that turning this down will remove frequencys that are sent to the sub. If set at 100Hz your sub gets 100Hz frequencys and below. If set at 40Hz it only gets those below 40Hz, which is not much signal.

I L K E R
08-19-08, 02:27 PM
Just to clarify, are you using the Sub1 pre-out from your RSP-1068? You should be using a 75 ohm cable (subwoofer cable or even component video will do the trick) and plug that into the LEFT subwoofer LFE input. Adjust the subwoofer level on your pre/pro to 0 db, and start with the subwoofer gain level at around 10:00 and turn up until you are happy with the level.

You might also adjust phase to 180 after doing all of this and A/B the two to determine which is best in your room.

Hope this helps!

-Chad

Just looking at my wiring behind the Pre/Pro... The Cable is in the SUB1 Pre out.. I Have a really good 75 ohm cable i am using.

The only thing i noticed is the Cable is in the RIGHT LFE input. Would that have made a difference?

Josette
08-19-08, 02:29 PM
What are you listening to? If the stuff you're playing doesn't have much low bass, your subwoofer isn't going to have anything to do.

I L K E R
08-19-08, 02:34 PM
What are you listening to? If the stuff you're playing doesn't have much low bass, your subwoofer isn't going to have anything to do.

For a movie i put in the TITAN A.E. which has lots of Bass. The sub crossed at 60Hz the movie sounds not too bad, but soon as i listen to 2 ch music with the sub i get no Bass with 60Hz. I tried to listen to Prodigy which has lots of Bass and there was no punch. Soon as put the crossover at 120HZ the music shook the room.

I L K E R
08-19-08, 03:09 PM
I am using Studio60s with a Servo15 and have crossovers in the 40-50Hz range. The Servo-15 does not seem to move much at all but, when called for, contributes powerfully.



Hi Kal,

My i ask what crossover settings you have for your front Studio 60's?

thanks,

Josette
08-19-08, 03:17 PM
I've never heard Prodigy so I really can't comment on them specifically, but I know that the vast majority of rock and metal music doesn't have bass that gets down into the subwoofer range. If the sub sounds okay with a movie, but with music you get nothing below 60 Hz, my first inclination is to say that the music probably doesn't have much going on below 60 Hz.

But like I say, I've never heard Prodigy so I may be completely wrong. I'd recommend trying a good variety of different music just to make sure. Something like the Hysteria album by Def leppard has pretty good low bass, or most smooth jazz stuff does as well.

Also, if it just sounds "okay" with movies, you might want to experiment with placing the sub in different spots in the room. I know mine sounded crummy in one spot, okay in another spot, and absolutely awesome when I put it in the corner.

JOHNnDENVER
08-19-08, 03:33 PM
I'd get a splitter and use both inputs on the sub. Can make a big difference on some subs. But I just set them all up this way.

I L K E R
08-19-08, 03:35 PM
I'd get a splitter and use both inputs on the sub. Can make a big difference on some subs. But I just set them all up this way.

Thanks john, i will try that...

thirdeye11
08-19-08, 04:10 PM
I've never heard Prodigy so I really can't comment on them specifically, but I know that the vast majority of rock and metal music doesn't have bass that gets down into the subwoofer range. If the sub sounds okay with a movie, but with music you get nothing below 60 Hz, my first inclination is to say that the music probably doesn't have much going on below 60 Hz.

But like I say, I've never heard Prodigy so I may be completely wrong. I'd recommend trying a good variety of different music just to make sure. Something like the Hysteria album by Def leppard has pretty good low bass, or most smooth jazz stuff does as well.

Also, if it just sounds "okay" with movies, you might want to experiment with placing the sub in different spots in the room. I know mine sounded crummy in one spot, okay in another spot, and absolutely awesome when I put it in the corner.

I can ASSURE you that The Prodigy has more low bass than almost any other commercial artist in history. They definitely have stuff going below 60hz.

I L K E R
08-19-08, 04:26 PM
Here are the settings on the speakers:

All speakers set at Small
Front crossover 80Hz
center crossover 80Hz
Surrounds crossover 80Hz
Subwoofer: Yes

Subwoofer crossover 60Hz

This setup sounds not bad with Movies. But soon as i put in a CD to listen to 2ch music i get little bass from my servo till i move the Crossover on the receiver to 120Hz.. Than i am Happy..:D

Just a Note: I listen to lot of music with BASS.. Trance, Techno.. So i need that Bass from the subwoofer..

If i was to leave the subwoofer crossed at 120Hz would that be OK compared to 40-60Hz people are running with their servos?

Hurtful Goat
08-19-08, 04:51 PM
Here are the settings on the speakers:

All speakers set at Small
Front crossover 80Hz
center crossover 80Hz
Surrounds crossover 80Hz
Subwoofer: Yes

Subwoofer crossover 60Hz

This setup sounds not bad with Movies. But soon as i put in a CD to listen to 2ch music i get little bass from my servo till i move the Crossover on the receiver to 120Hz.. Than i am Happy..:D

Just a Note: I listen to lot of music with BASS.. Trance, Techno.. So i need that Bass from the subwoofer..

If i was to leave the subwoofer crossed at 120Hz would that be OK compared to 40-60Hz people are running with their servos?

Well, there's your problem! Your sub is being low-passed at 60Hz, while your speakers are all being high-passed at 80Hz! Meaning your entire system, (including the LFE Channel, that gets low-passed too) has a giant frequency black hole between 60 and 80Hz!

Change your sub crossover to 80Hz.

JOHNnDENVER
08-19-08, 04:53 PM
The sub crossover should be switched out, if it does not have this turn the crossover on the sub all the way up.

Not even to 80, higher, strange things can happen with a double cross. :)

Kal Rubinson
08-19-08, 05:13 PM
For a movie i put in the TITAN A.E. which has lots of Bass. The sub crossed at 60Hz the movie sounds not too bad, but soon as i listen to 2 ch music with the sub i get no Bass with 60Hz. I tried to listen to Prodigy which has lots of Bass and there was no punch. Soon as put the crossover at 120HZ the music shook the room.You need to give us more info about your settings. No bass with 2 ch suggests that the BM is set up incorrectly. Also, answer my earlier questions about how you did your setup and calibration.

Kal Rubinson
08-19-08, 05:14 PM
The sub crossover should be switched out, if it does not have this turn the crossover on the sub all the way up.

Not even to 80, higher, strange things can happen with a double cross. :)Bingo.

Kal Rubinson
08-19-08, 05:16 PM
Originally Posted by Kal Rubinson

I am using Studio60s with a Servo15 and have crossovers in the 40-50Hz range. The Servo-15 does not seem to move much at all but, when called for, contributes powerfully.
Hi Kal,

My i ask what crossover settings you have for your front Studio 60's?

thanks,Hmmm. Could it be 40-50Hz? :rolleyes:

Now, if you ask about the sub, there is no crossover since the bass rerouting from the main speakers takes care of that and I use 120Hz for the LFE setting.

I L K E R
08-19-08, 05:26 PM
Hmmm. Could it be 40-50Hz? :rolleyes:

Now, if you ask about the sub, there is no crossover since the bass rerouting from the main speakers takes care of that and I use 120Hz for the LFE setting.

Sorry Kal. I thought that was your Subwoofer crossover setting.. I did not use a SPL meter on my system. I usually go with what sounds best to my ears.

See, i don't understand when you say you have no crossover for the sub. How do you set the sub from the receiver? When your talking about the 120Hz for the LFE is this set through the receiver or behind the sub knob? My Pre/Pro has only crossover settings.

Sorry for lot of questions. I am trying to understand how all this works...

EDIT: So do i than turn off the crossover from the Pre/Pro? Than just adjust the LFE from the sub? is that right?

JOHNnDENVER
08-19-08, 05:34 PM
The physical crossover on the sub itself should be switched out, or turned to it's highest setting.

Kal Rubinson
08-19-08, 05:40 PM
Sorry Kal. I thought that was your Subwoofer crossover setting.. I did not use a SPL meter on my system. I usually go with what sounds best to my ears. Very, very dangerous unless you have gobs of experience and, even, then it is unreliable.

See, i don't understand when you say you have no crossover for the sub. There is no crossover filter on my sub, an earlier Servo-15. If there was a crossover, I would remove or bypass it (or turn it to its highest frequency) and let the processor handle all.

How do you set the sub from the receiver? There is a setting on my processors which affect only the LFE signals, not the rerouted bass from the main channels. This I usually set to 120Hz (theoretical limit of LFE) but I have used none or 100Hz in some circumstances.

When your talking about the 120Hz for the LFE is this set through the receiver or behind the sub knob? My Pre/Pro has only crossover settings.In the processor. Bypass any filters on the sub. Does your pre/pro have a crossover setting for the subwoofer? If so, the manual should state whether it is for the LFE only (proper) or if it affects other signals.

EDIT: So do i than turn off the crossover from the Pre/Pro? Than just adjust the LFE from the sub? is that right?No. Just the opposite. See above.

I L K E R
08-19-08, 05:42 PM
The physical crossover on the sub itself should be switched out, or turned to it's highest setting.

Yes , i understand that. I have the crossover on the sub at the highest level which is 150Hz i believe.. So than what do you set your Pre/Pro at? 80hz 100hz 120hz? that's where i am stuck at the moment...

I L K E R
08-19-08, 05:48 PM
Very, very dangerous unless you have gobs of experience and, even, then it is unreliable.

There is no crossover filter on my sub, an earlier Servo-15. If there was a crossover, I would remove or bypass it (or turn it to its highest frequency) and let the processor handle all.

There is a setting on my processors which affect only the LFE signals, not the rerouted bass from the main channels. This I usually set to 120Hz (theoretical limit of LFE) but I have used none or 100Hz in some circumstances.

In the processor. Bypass any filters on the sub. Does your pre/pro have a crossover setting for the subwoofer? If so, the manual should state whether it is for the LFE only (proper) or if it affects other signals.

No. Just the opposite. See above.

Thanks Kal, All makes sense now.. I will check to see if the rotel pre/pro has the setting for the LFE only...

Thank for your help,

cheers,

Kal Rubinson
08-19-08, 05:50 PM
Thanks Kal, All makes sense now.. I will check to see if the rotel pre/pro has the setting for the LFE only...

Thank for your help,

cheers,And get a sound level meter!!