Ok here goes,
After getting everything hooked up, and powering it all on, I started by listening to some hardcore bass tracks, the kind you feel more than hear. I have a couple of CD's that are bass tracks used in car audio comp's. Now bare in mind, I have the RTi 150's, and if you not aware of their specs, here is just a little run down:
Subwoofer 3 - 6-1/2" Diameter (16.51cm)
Long-throw Polymer cone woofers - shielded
Midrange 1 - 6-1/2" Diameter (16.51cm)
Dynamic Balance Polymer composite driver - shielded
Tweeter 1 - 1" Diameter (2.54cm)
Silk/Polymer composite dome - shielded
Overall Frequency Response 20 Hz - 27kHz
Lower -3dB Limit 26Hz
Upper -3dB Limit 26kHz
Nominal Impedance 8 ohms
Recommended Amplifier Power 50 - 500 w/channel
Efficiency 91 dB
(mid-high array) 2.1kHz 2nd order HP & LP
(subwoofer) 85Hz between driver and subs, 1st order HP/2nd order LP
Inputs Dual (bi-amp) gold plated 5 -way binding posts
I have had these for about a year now. And got the pair in a CC closeout at roughly 3 hundred for the pair. Since then I have been powering them with a Parasound HCA1500a amp. An amp with respectable specs. Rated @ 205 w/c into 8 ohms. If you would care to see the specs of this amp, you may do so here: http://www.parasound.com/products/am...500aspecs.html
And with the HCA1500a, the 150's have made me very happy. I use a Yamaha RX-V3300 to steer the amp as well a HCA1000a bridged @ 400 watts into 8 ohms driving a CSi40 center. The receiver handles the rear center and rear surrounds. I have since sold the HCA1500a and replaced it with a QSC PMX2450 amp, (for those that may have missed my earlier posts)
Now, back to the task at hand. After poping the bass CD in my Denon 2200 DVD player, and adjusting the gain levels on the 2450, I was greeted with what I can only describe as POWER! I cranked the volume a bit more and OMG, I could my skin being brushed with subsonic sound waves. Items on shelfs began to vibrate and move. The walls were vibrating. The flooring was pulsing and vibrating. And I began to grin evily. Took out the bass CD and poped in "Blackmore's Night, Ghost of a Rose". Not sure if any of you are familer with them, they are a kind of Folk midevil festival group for lack of a better descripsion. But I find this to be a killer CD for testing the limits of gear. After listening for a minute, I noticed it sounded real hm..... ballsy. Kind of muddy. And I thought crap..... this isn't right. Then I got to thinking, I hadn't checked the dip switches on the back of the amp... after looking at the settings, I found the problem. It was set with the clip limiter off, and the 30/50 hz filter set to 30 hz. I turned the clip limiter on, and set the filter to 50 hz. Took another listening and thought........... ooooooooooohhhh yeah.... thats the ticket. People in the past at Polk forum have commented about the 150's lacking midrange. And that might be true.... without enough juice. But now.... I can whole-heartedly say, these speakers lack nothing, not one thing. Needless to say, "I am grinning from ear to ear" haha.
Thank you again Maz, for starting this thread... and to all of you that have contributed to it. Pro amps will be the only amps I purchase from here on out.
Oh, and another thing, the power cord that came with the 2450, is freak'n huge. And came with four large rubber feet to mount on the bottom of the chassis.
I also found a site selling it for less than what I bought for, and where I got it from will price match up to 60 days after purchase.... woot!