Originally Posted by commsysman
To improve the sound of your receiver by buying good-quality separate amplifiers would cost several thousand dollars, and is not the way to go.
Crown and that sort of "pro" amplifier are not high-fidelity; it is junk; only intended for public-address use.
LMAO ........ Almost fell out of my chair..... JBL uses Crown amps to drive their pro ,theater and well regarded high dollar JBL Synthesis systems . They are both Harmon int'l companies.
JBL has been using crown amps for over ~ 40 yrs .
Anybody that says Crown is junk has no clue ! ,.......Crown had a very extensive product line and are often used in pro venue's , recording studios and post production facilities .
Even the inexpensive Crown XLS 1000 can out perform many more expensive so called "high fidelity " amplifiers or any receiver, get into the Crown XLI 's etc and it gets even better . QSC also makes some very good amps .These amps are way beyond
consumer THX certification as far as amplification goes .
I use Crown XLI's in the Studio here ( lots of others do also) all the consumer hifi amps that were here including Phase linear 700B's are long gone
not to mention my amps are often on at least 12 some times 16 hours a day .
The Phase Linear's were pretty good but expensive to maintain due to their age and construction but they couldn't outperform a modern Crown amp.
Decent modern amps and decent receivers have mostly inaudible distortion as long as they aren't over driven or under powered for a given speaker .
I prefer outboard amps for the extra overhead and for reference level listening on my
OTOH A decent receiver and powered subs may be just fine with good quality reasonably efficient speakers of (90+ db@1w@ 1m ) sensitivity. Efficiant speakers can use remarkably less power than inefficient speakers and sound excellent without the need of a lot of power YMMV.
I've owned Bose 301's for surrounds and 701 towers for mains and a VC10 center + a 15" powered sub and a Sony ES 5.1 receiver in my first HT set up for what they are they weren't bad at all they could " THX" a room just fine just not the greatest thing for critical music listening but not unpleasant at all
if not pushed too hard .
As for the SUB keep what you have if you like it and add a sub ..
or two ( distributed bass .) 2 or more
decent subs in a room (usually at opposite ends ) cancel out room nodes and excessive room gain if placed and adjusted properly 2 will usually perform much better than one sub. (and you don't have to drive them as hard as one , although you can for LFE effects, 2 are usually ,less boomy more musical and smoother bass ) You don't necessarily have to match your sub ,you can but something similar would work well .
I have 3 subs in one system , 2 in another they do a good job and disappear into the rooms quite well.