I have been auditioning the SB2000 PRO with my LP6 Kali'sfor the past week or so and I have to say that the combination is simply awesome! Da bass is
clean, with no audible distortion and no rattling of any sort, unlike the Monolith 10 I returned due to port noise. And this is playing a 20Hz test tone. With regular music (ok. mostly youtube music, I know not audiophile quality), I hear (and
feel) low, low bass notes that I never heard before, even with the monolith 10 that I just returned.
With lossless 24-bit music, the sounds are simply surreal, floating in 3D space with each bass note clear and distinct. TV program audio is quite amazing as I hear bass notes and LFE that cause me to look up and turn around looking for who or what produced that bass thing...and where the heck did it come from
. I believe this is due to the ultralow distortion of the SB2000 Pro. I have them crossed with the LP6s at 55Hz with volume at 0dB. Unfortunately, the sub doesn't go beyond 0dB like all other subs I had, including the Monolith 10 I just returned. But that's ok for now in my small college room. Crossing it higher than 55Hz was trouble as the system sounded too bassy. Picking the right subwoofer crossover point is key to getting the LP6s to sound their very best, IMHO.
The SB2000 Pro pounds some serious bass and LFE that you feel deep inside your gut, even with benign programs, heck even some boring commercials sound really good. I could swear the SB2000 PRO has some kind of a bass doubling generator inside of it. I mean, if a program sends a 50Hz bass note, I feel a 25Hz or lower notes as well. Ofcourse, it doesn't have such a device but the discovery of bass notes/LFE in regular programming has me surprised and stymied since no laws of physics exist that would half the original sound frequency. It must be that these deep notes were in the original programming, but cut off by non-revealing or high distortion subwoofers.
I think low subwoofer distortion throughout if frequency range is far more important than SPL at said range. If I need more SPL, then I'd get 2 or 4 subs, if finances and space permit.
My system isn't optimized by any means since I don't have a room correction kit, so I have no idea what the frequency response is. I'd like to dial in the sub-phase at the crossover point and maintain the LP6 frequency response downward slope as measured by Erin. It's all been by ear so far and will have to be until I find an affordable and easy-to-use RC kit.
Thanks for the help in selecting the correct crossover points for my Kalis.