Quick primer on Sub Set up

[JackVa1]

My Velodyne ct-150 has the following controls:

Volume (is this just a personal preference? I have LFE control on my receiver - who should be the boss of the volume?

Phase 0- 180 ???

Lowpass Crossover 120 - 40 ???

A switch

Highpass
100 - 80 Which should I choose?

Just some guidelines would be helpful. Thanks a lot.

I have an ONKYO DX-TS797
Speakers are Bose Accoustimass double cubes ( no comments please)

 

[Seth=L]

If you are using the LFE or RCA connections on the subwoofer ignore the highpass, as it only applies to the speaker level inputs I believe. The low pass should be either overriden or set to the highest possible setting. If it can be overriden completely I would use the receiver's x-over (I would use it regardless) and set it to the highest setting, which is likely to be only 120 hz, possibly higher, with all speakers set to small. I would leave the phase adjustment at "0".

The Bose satellite speakers, if I remember this correctly, only go down to 400hz or so before they start to drastically roll-off. There will be a frequency gap of close to 280hz probably a tad less, that is completely missing or just at a level so low that it will be inaudible over other frequencies played.

The model number of the Onkyo should read: TX-DS797. I used to own the TX-DS787 which is very similar, pretty nice receiver.

 

[JackVa1]

The Bose satellite speakers, if I remember this correctly, only go down to 400hz or so before they start to drastically roll-off. There will be a frequency gap of close to 280hz probably a tad less, that is completely missing or just at a level so low that it will be inaudible over other frequencies played.

Are you certain that the HZ gap is that dramatic? These I think are System V speakers with a Bass module and double cubes not just a satellite cube.

Thanks for the help with the other settings. I will try them out tonight.

Jack

 

[j_garcia]

Keep the Bose bass module in the equation, set their speaker outputs to "small" and let the receiver's crossover take care of the rest. Feed the sub via the sub preamp output from the receiver and that should remove any big gaps. Other than that, follow what Seth said.

 

[JackVa1]

Thanks to both of you.

I have just one last question: When you say let the receiver's x-over do the rest; Is this a setting I need to perform or does this just happen when I set the speakers to small (which I have always set them too).

It sounds like there is a low pass X-over setting on my receiver I need to look into.


Thanks again, guys. Next year I plan on giving the bose away.

Jack

 

[j_garcia]

If there are no options for the x-over on your receiver it just means there is only one x-over choice (which means setting speakers to small automatically enables it). Yours is right about the time where Onkyo started to offer selectable x-over, but I don't know if that model had this feature or if it wasn't until the following models.

This is of course assuming you have the cubes hooked to the bass module and the module is running via the "harness" from the receiver, since that is where the crossover is located for the cubes, to prevent the previously mentioned gap.

 

[JackVa1]

WOW - ok you are helping me through this.

There is nothing in the ONKYO about crossover. I read the instructions . It is a 6.1 system from about 2002.

My cubes are connected to the bose base unit, and that is connetcted to the FRONT L and right speaker connecters on the ONKYO. Not sure what the harness thing is all about.

My Velodyne is connected via a 20 ' RCA single jack from the ONKYO.

Am I ok here? What should the sub setting be for Low pass be?

Jack

 

[j_garcia]

Sub should be fine like that. Low pass as high as it will go because the receiver is taking care of that.

Yes, speaker connectors to the Bose bass module, to the cubes. If you had one of the Bose systems that had 5, 6 or 7 speakers, you would have had a "harness" that had wires for each R, L, C, and surrounds.