This could be considered a review, an observation, a problem - all into one so please bear with me.
I upgraded from a Sherwood RX-4109 Stereo Receiver (which were poweing Jamo E530 bookshelves) to a Denon AVR-1910 because, the Sherwood, although, very detailed and crisp could not get any bass out the the power hungry Jamo's and used to clip over 60%. I hooked the speakers to a friend's Denon AVR-2805 and found the Jamo's reach new levels both in terms of bass and loudness.
However, I also added a pair of Polk Audio TSi 300 (with a view to get a sound more complete in frequency range). I retained the Jamo to utilize the AVR's number of channels and slowely convert the setup into a Home Theatre). For now, the E530 and TSi300 both are connected to front A and B and I often listen to same music through either or both together.
Here's the problem - the Denon-Polk combo is extremely sibilant (lot of stress on ssss) and although bass is finally good, the mid/vocal is thin and light and the treble (which appeared better detail earlier) is actually slightly shrill and thin.
The Denon-Jamo combo on the other hand has a shade less sibilance (but still noticeable and annoying) but the vocal is warm and bold without overshadowing treble (the bass ofcourse is still weak).
I can't help feeling that it was not a good move shifting to Denon AVR in the first place and partering Denon & Polk in the second. And now I am tempted to go back to a good integrated amp.
Which amp would partner well with the bright characteristics of the polks?
Cambidge Audio, Marantz, NAD, or Denon integrated series?