I recently picked up an older Infinity SSW212, 300w, dual 12" sub and connected it to my 7.1 system via sub pre-out on a Denon 1908. I have heard this unit basically shake a house off its foundation at its original owner's location yet I can't get hardly anything out of it. Plus, I get some distortion at even a medium bass output level. Being a cross over novice, I was curious if there may be a conflict going on between the receiver and the sub? Both have their own cross over setting capabilities. I can set cross over via a dial on the back of the sub as well as in the receiver. Do they both need to be set the same or do I need to have one turned off to keep from conflicting with the other?

I currently have all speakers set to "small" (running six matched Definitive UIW65 in-walls), running "LFE + Main" trying to draw more bass out of the system and have left the default cross over on both sub and receiver set to Hz.

Any suggestions would be most welcome.

?

I currently have all speakers set to "small" (running six matched Definitive UIW65 in-walls), running "LFE + Main" trying to draw more bass out of the system and have left the default cross over on both sub and receiver set to Hz.



What is the default crossover? Is it 80hz? If so, that's fine.

Don't use the "double" crossover. In other words, turn the crossover on the sub off or set it as high as it will go.

I currently have all speakers set to "small" (running six matched Definitive UIW65 in-walls), running "LFE + Main" trying to draw more bass out of the system and have left the default cross over on both sub and receiver set to Hz.

Any suggestions would be most welcome.

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I would just use the 'LFE' (only) setting in the receiver sub woofer menu...pg.24
You can set the receiver Xover to 80 or 100......... experiment.
That should eliminate the sub Xover entirely; if not just turn the sub Xover setting to max.

I recently picked up an older Infinity SSW212, 300w, dual 12" sub and connected it to my 7.1 system via sub pre-out on a Denon 1908. I have heard this unit basically shake a house off its foundation at its original owner's location yet I can't get hardly anything out of it. Plus, I get some distortion at even a medium bass output level. Being a cross over novice, I was curious if there may be a conflict going on between the receiver and the sub? Both have their own cross over setting capabilities. I can set cross over via a dial on the back of the sub as well as in the receiver. Do they both need to be set the same or do I need to have one turned off to keep from conflicting with the other?

I currently have all speakers set to "small" (running six matched Definitive UIW65 in-walls), running "LFE + Main" trying to draw more bass out of the system and have left the default cross over on both sub and receiver set to Hz.

Any suggestions would be most welcome.

If your in-walls are in enclosures, (unlikely), this will be OK. However, if they are not in enclosures, and the back is open to the wall cavity, (more likely), I would remove as much bass from them as possible. Having your L/R's attempting to reproduce bass with the wall cavity as their enclosure is not a great idea. The bass will do nothing but excite the wall to resonate. See this article:
http://www.cepro.com/article/how_to_prevent_audio_loss_with_in_wall_speaker_systems

I would:
1. Set the Bass Management as follows: All speakers "Small", 80 Hz crossover, Sub Out to subwoofer only. (These settings will re-direct all the bass below 80 Hz to the subwoofer, which is the best speaker in your system to reproduce it.)

2. Set the crossover on the sub to it's highest level or "Off" if possible.

3. CALIBRATE the speakers and sub! To calibrate:

If your receiver has an auto-setup routine, use it. However, you will want to manually override the "Large"/"Small" settings to "Small" and override the crossover to 80 Hz. Keep all the level and distance settings it finds, even if they seem incorrect.

If your receiver doesn't have an auto-setup routine, it will have test tones. Use an SPL meter at the primary listening position, (ear level, pointed up), to set the test tones from each speaker and the subwoofer to 75 dB, (or 85 dB depending on the receiver). Start out with all the speaker levels set to "Zero". Set the volume knob on the subwoofer to about 1/3 volume. If the sub is not loud enough to calibrate it, turn the volume knob up slightly until it gets close. Then fine tune it with the level setting in the receiver. Finally, play with the phase control on the sub to get the highest levels on the sub.

Craig

I currently have all speakers set to "small" (running six matched Definitive UIW65 in-walls), running "LFE + Main" trying to draw more bass out of the system and have left the default cross over on both sub and receiver set to Hz.

Any suggestions would be most welcome.

As Craig said make sure the crossover is set to 80hz for the mains and center. Just setting the fronts to "small" on the AVR-1908 doesn't change the crossover freq.. at least it didn't on mine.

Thanks for all the great advice. I'll play with all the settings suggested to see how it plays out. I kept trying to match the receiver and sub cross over settings so hopefully all your suggestions will help me dial this thing in. Thanks again for the help.