Monolith 15” THX Sub issues - worse than PL-200?
I’ve been a long time lurker (since early 2000s!) but finally in a position to put together a nice home theater system. I thought I would start with the subwoofer, and purchased a Monolith 15” to replace my BIC PL-200. But, I have to say, I am very disappointed in the results!
The PL-200 in the same position as the Monolith, at the same volume settings, absolutely destroys the Monolith, it’s no comparison. The room shakes. This is after running room correction using a Yamaha RX-V681 for each subwoofer prior to comparing.
I am not sure how to troubleshoot this. I noticed when I first turned on the Monolith using the “Auto On” mode, the sub amplifier light was blinking green and red, and I was worried about the amp having issues. The first few times I used it, it would take a few minutes for the amp light to turn green (on). But that issue seems to have resolved now. It’ll turn on immediately when to set to Auto On mode.
I’ve tried different seating positions. Different phase settings. Set Monolith cross over to THX (off). Double checked the receiver settings (cross over at 80hz and speaker size set to small). Despite all this, the Monolith on MAX volume is somewhat acceptable, I can tell it’s there... but the PL-200, I feel in my chest. I am on the verge of returning the Monolith and just getting a second pl-200 and save myself $1,000. But after moving this 160lb box upstairs, I really do not want to repack and move it again! I am hoping I am just doing something wrong so I can experience what this 15” beast has to offer.
Could it be the sub amp? I would assume that if this was the case it wouldn’t work at all, rather than working at a disappointing level. Any thoughts on setting changes I can make? I’ll be contacting Monoprice about this as well and will update you guys on their input.
Any help would be appreciated! Thanks guys!