Adding sub question

Here is how I got to where I am today, when I first purchased the Tylers I was running them with a Rotel RSX 1065(don`t laugh!), and an off the shelf Sony blue ray player, with the Nordost cables, was very harsh at the top end on while `pushing` the Tyler to get the low end. Then along came the ARC D130, I was still using the Rotels` pre out driving the ARC got better in the low end but still a little too harsh on top end while trying to obtain the low end I wanted, then I found a deal on the Classe, seemed a little better, but still harsh and shallow on low end. Last weekend I hooked up the Sony along side of the Jolida, playing the same tune it ironically sounded near the same, just the Jolida was a little better in midrange, go figure a $100 blue ray player versus the Jolida, not much difference. Strange maybe cables not the source, but still could be amp related.

Tls, thanks very much. I always enjoy reading your posts as well, which have struck me as knowledgeable, helpful, and well intended.

As you probably realize, the 47K figure you found in the manual would be a recommended load impedance, rather than an output impedance (or an input impedance, since the JD100a has no inputs), although it may have been described as an output impedance due to loose translation or whatever.

In any event, both the 47K and 100K figures are significantly higher than the 33K input impedance of the Classe preamp. So as Bob said just above it seems pretty clear that a significant impedance incompatibility is present, which is most likely a significant contributor to the problem.

Pkrbkr999, just saw your last post. I would keep in mind the possibility that multiple problems may be present, with the effects of the impedance incompatibility being masked by a different problem.

Also, while I'm not certain what you mean by having to "push" the Tylers to get the low end, keep in mind that the sensitivity of our hearing mechanisms to deep bass frequencies, relative to their sensitivity to mid-range frequencies, decreases as volume levels are decreased. The Fletcher-Munson Effect.

05-27-13: Tls49
My comments were merely to get him thinking about his system and the synergy, rather than just throwing subwoofers at it.

Excellent point, well said.

Best regards,
-- Al

What I mean is that both sub's will have there own separated channel. Right and left for stereo use. That is the only way I would go for 2 sub's. All the demo's I heard with 2 Velodyne sub's were quite worse. First they are slow has a turtle and second instruments and voices become too big in proportion. I can now use my sub from 16hz till 140 hz with ease. Without Audyssey Pro I never heard a sub integrate that good as it should be. Still I would love to have an acoustic system for 2 separated sub's for stereo use.