2. tech-talk
  3. 154668-140496

Wiring question : amp-sub-speakers

I am pretty new to audio world and am looking for an advice regarding wiring Denon PMA 2000 IVR integrated amp, Polk PSW 550 sub and JBL studio 530 speakers. Current wiring is, Amp to JBL using the main binding post and Amp to Sub using preout. It sounds great up to certain volume level and JBL 5" woofer starts over-excursion, aka bottoming out, at a higher volume(knob 11 o’clock & >90 decibel) to fast tempo low frequency sound like drum kicks. I am not sure how to improve this situation. Sub manual suggest "Speaker-level" connections, i.e., Amp to Sub and Sub to JBL. Is it connection issue, JBL issue, or Amp issue? Thanks in advance.
ubee67

Showing 4 responses by djones51

djones51
4,947 posts
 
I am not sure about  Polk but I had a NHT sub years ago that only sounded right if wired amp to sub to main speakers and you set the crossover on the sub. 
djones51
4,947 posts
 
I looked up your sub you need to wire like the manual says and set the crossover and volume on the sub.
djones51
4,947 posts
 
Page 6 of the manual on the Denon PMA2000 IVR, number 16 Pre Out terminals (PRE OUT) , under NOTE, No signal is output when selecting power amp direct terminal. You CAN'T  USE  the PRE OUT  and AMP DIRECT at the same time. 
djones51
4,947 posts
 
You can't use the pre out and amp direct at the same time on this integrated when the power amp direct is turned on the pre amp out is turned off.
More to discover