Does anybody know what the cutoff frequency for the Onkyo TXDS777 is when the speaker configuration is set to "small"? I want to use the "small" speaker setting so I can let my subwoofer handle the bass frequencies but I don't know what to set the sub's cutoff frequency to.

I read in another post that the Panny's have a cutoff frequency at 100Hz. Is that pretty much standard on all brands or is each one different?

TIA
MaDmiX :)

100~120Hz is a pretty safe assumption.

Are you trying to set the crossover on the sub itself?

It should be adjustable, typically with steps of 60, 80, 100, 120hz, etc. What speakers are you using?

It should be adjustable, typically with steps of 60, 80, 100, 120hz, etc. What speakers are you using?

Correct.................. the Xover settings depend on your Mains & your Sub!
1. Do you have the manual ? If so, refer to the page on receiver Xover settings.
2. You need to know the freq. response of your Mains & Sub. Then you choose the Xover point that 'blends' those speakers for best ' BASS'.

http://www.audioholics.com/tweaks/get-good-bass/bass-management-basics-2013-settings-made-simple/
John

Chris Schempp,

Yes, but I need to know the crossover freq of the receiver when the speaker config is set to small (so I can match that setting on the sub).

Jesse S,

Unfortunately, the TXDS777 does not have an adjustable xover freq on the speaker config page (just a "small" or "large" setting). I'm using an old set of Optimus STS-100 (till I can upgrade). They do a decent job. The low freq range is 75Hz but I'd rather let the sub handle as much of the low end as possible and just use the mains for mid-bass and highs.

John,

The manual, unfortunately does not have any info on the xover settings. As far as the second item, that's how I have the sub set up now (see my reply to Jesse S).

Thanks to all of you for your help. If I can't get the exact Xover freq of the receiver, then I will just probably set the sub to 100 Hz. It seems like a safe bet.

Thanks again,

MaDmiX

I read the manual and then agreed with your guess :)

Best thing might be to set it to small then set up the sub x-over. Then bump it up, then move it down. See what sound you prefer.

Or get an RTA.

Personally, playing with it a little would be my bet unless I already had RTA software :)

Yes, I agree. My rear spekers probably can't go below 100Hz, so I'll use that as a starting point and work my way down till I find a happy medium between the fronts and the rears. I also emailed Onkyo support to see if they have any info.

Thanks again,

MaDmiX

Guys, Onkyo replied to my email. Here is the info:

Thank You for contacting Onkyo USA Product Support.

The sub, is set to 80Hz, and below if you set the speakers to small the cut off will be 100Hz, and up and Large is 80hz, and up.


Again, thank you for contacting Onkyo USA Product Support, if you need further assistance feel free to call us at 800-229-1687 or visit our website ONKYOUSA.COM for product, catalogues, hookup diagrams, authorized dealer/service center locations, sales of new/refurbished products and
warranty information.

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So I will set all my speakers to "small" and set the sub to 100Hz. Hopefully that won't make my sub "visible" (as I read in the link that John sent me... BTW thanks, it was very informative).

Thanks again guys! ;-)

Actually I was thinking about the reply from Onkyo. Is it possible that the Onkyo rep meant the subwoofer Xover is set to 80Hz regardless of the speaker size setting. The reply is a little confusing. If this is the case, however then I should set my fronts to "large" and the rears & center to "small". Then set the sub to 80Hz.

Anyone care to weigh in?

MaDmiX

You should use small. That receiver is THX from what I can see. That used to mean an 80hz crossover between subs and mains although most units now can override that. If you used large, a lot of bass in the main channels would be played by your speakers instead of the sub (bad).

You should use small. That receiver is THX from what I can see. That used to mean an 80hz crossover between subs and mains although most units now can override that. If you used large, a lot of bass in the main channels would be played by your speakers instead of the sub (bad).

I don't understand. If the receiver's sub out is set at 80Hz and below, how would the receiver "override" this setting. If I set the mains to "small" (i.e. only receiving 100Hz and up from the receiver) and the receiver sends only 80Hz and below to the sub, wouldn't I be losing the frequencies from 80 to 100Hz?

I wish the Onkyo rep used better punctuation. lol :D

Guys, Onkyo replied to my email. Here is the info:

Thank You for contacting Onkyo USA Product Support.

The sub, is set to 80Hz, and below if you set the speakers to small the cut off will be 100Hz, and up and Large is 80hz, and up.

This is why punctuation is important when you post messages! :rolleyes:

You never stated what Sub you are using. What sub is it, and is it ajustable ?
I would interpret that statement (?) to mean:
Setting the receiver to small (speakers)means the receiver Xover is set to 100hz.
Setting the receiver to Large(speakers) means the Xover is set to 80hz.
As we ( 3) stated before, we believe your receiver(speakers) should be set to small. Then all freqs. below 100hz. will be sent to the Sub.
If your Sub is not adjustable, then you are stuck with the receiver settings of 'small' or large'. You will have to listen and decide which sounds best........ as stated in previous posts.
* If there is a difference between the receiver and Sub Xover( 100 & 80), you don't lose everything between 100-80Hz. Those freqs. are attenuated by the slope of the receiver's Xover. The slope of your receiver is probably 6db/octave. See link below on Xovers.
See link below for an explanation of Xovers, particularly Fig.19. The 'green' line might represent the receiver and the 'red' could represent the sub's Xover ( if it had one).
http://sound.westhost.com/dwopa2.htm
John

I am using a Klipsch KSW10. It has an adjustable cutoff.

I apologize that I don't understand how the small/large settings affect the signal being fed to the sub (or even if they do at all). I figured that since the first thing mentioned by Onkyo is that the receiver's sub output is set to 80Hz, that it means that this setting is irrespective of the speaker size setting.

I guess the best way to find out is to test. Now... to figure out a way to get the wife away from the TV long enough :eek:

MaDmiX

I am using a Klipsch KSW10. It has an adjustable cutoff.

I apologize that I don't understand how the small/large settings affect the signal being fed to the sub (or even if they do at all). I figured that since the first thing mentioned by Onkyo is that the receiver's sub output is set to 80Hz, that it means that this setting is irrespective of the speaker size setting.

I guess the best way to find out is to test. Now... to figure out a way to get the wife away from the TV long enough :eek:

MaDmiX

If you read the article section 'Crossover networks' and check the graph. in Fig.19, it will explain what the receiver and sub Xovers are trying to do. The picture explains it clearly.
Set your receiver settings to small, then set your Sub to 100 or 80.
The sub Xover setting between 100 & 80 will most likely make little difference between those two levels. Your Sub is adjustable between 40-120Hz. I would think 100Hz. would be a good setting!

I can't help you with the 'Wife Factor'........... :rolleyes:
john

I tested last night with a scene from the latest CSI Las Vegas. There's a nice explosion in the beginning of the show that is perfect. I did notice that with the mains speakers set to "large" there is a noticeable loss of low-mid bass and smoothness in the lows. With the setting at "small" all the low frequencies seem better represented.

Thanks again for all of your help guys!!!
:)

With the setting at "small" all the low frequencies seem better represented.

That's the way it should work, especially with a real Sub.
Glad it worked out OK............... ;)
Today I get my 'real Sub'................. I hope! :rolleyes:
John