I did a bunch of trouble-shooting and ran Audyssey after receiving my new speakers last night (Ascend CMTs), changing of settings, etc last night. Unfortunately I didn't have another RCA cable. I'd sort of given up for a bit and decided to play a game without the boom for a while. However, at one point I was standing very close to a very large explosion in the game and suddenly the sub sprang to life. There was a brief period of activity where it remained active on frequencies it had previously ignored (gunfire, etc) and then it disappeared again.
That made me wonder if when I recalibrated with Audyssey, it set a super low crossover point. I went in and looked and though the sub setup was at LFE+main and a crossover of 120hz, the speakers were set to a crossover of 40hz. I changed them to 80hz and noticed a bit more activity out of the sub at times. However, it still felt sudden as if it were simply cutting in and out, springing to life every once in a while when there was something really low frequency, hanging out for about 10 secs doing other frequencies I would expect it to respond to and then it would disappear again until the next ultra-low sound. I had no idea what was going on. I tried changing it from auto to on, though that didn't make any difference and I didn't expect it to.
Again, I'd given up for the evening and consigned myself to the fact that it was just coming and going very noticeably almost like it was exhausted and every once in a while someone would hit it, tell it to wake up, it would work frantically and then fall back asleep. As a final effort after getting annoyed at the cutting in and out while watching a show, I decided to fiddle with some of the stuff on the back one at a time with a constant audio source running. I independently moved all the switches and dials (crossover on-off, crossover dial, Q dial, etc) with no response. Then I flicked the switch from EQ1 to EQ2 and the sub came alive. Something about the EQ2 setting is making it active when the EQ1 was keeping it off 95% of the time. It was loud, powerful, and consistently making noise. So much so that 30 mins later my wife came down and asked me why the hell everything had to be so loud.
What is this EQ2 doing and why would it turn the sub from basically being non-functional to being nearly over-powerful and excessive?
Originally Posted by Pinstripe
You don’t mention if you recalibrated or not after hooking up the HSU.
I did last night once my new LCR speakers came in.
Originally Posted by nhpm510
You probably have it plugged into sub2 (instead of sub 1).
I also have a 4300 and a new 2.5 which shakes the house in a 4900 sq ft basement space.
Good luck with troubleshooting- it has to be something simple.
It was plugged into sub 1.