Originally Posted by MichaelJHuman
I don't want to insult your intelligence, but subwoofer output does sound quieter than the music as it's contribution to the music is much smaller.
Here's what I think you should do. Get a frequency sweep file online. Say 20hz to 200hz or so. Play that. You should hear bass throughout the sweep, except maybe at the lowest freq's and lower at room modes. With those frequencies, and a crossover of 80hz, you should hear bass from both the sub and the mains. If you hear almost no bass below the crossover, then something seems to be wrong (and use the normal level for the sub, not turned all the way up!)
No offense taken. I was not trying to say it was just quiet. I mean, it was barely perceptible (no driver movement).
I got a low frequency sweep, and here is what I found:With the source hooked directly to the sub, there was definitely driver movement at a normal reference level on the sub. There was a high dB level of sound
With the source hooked to the AVR in surround sound mode:
Cross-overs set to fullrange with setting on Sub+ (means low frequencies get sent to both fronts, center and sub for 3.1): sweep heard on fronts and center, but not on sub.
Cross-overs set to 250 Hz for Fronts and Center: Sweep hear on fronts and center, but at a perceptibly lower dB level than before (makes me think the lowpass filter is working), but with no perceptible sound on the sub.
Other notes: I tried hooking the sub to the Room 2 RCA output (thinking it might just be the subwoofer output that was not getting a signal, with no luck).
I'm thinking I need an expert on Sherwood Newcastle Receivers to help me out. I am still in over my head, but I have learned quite a bit.
Also, I'm getting a very low dB frequency sweep on the Subwoofer, but it seems to be spanning the whole sweep, even with the crossover set to 80 Hz.
Could this be a problem with the low-pass filter on the AVR?