2. amps-preamps
  3. 1425737708

Jeff Rowland

I recently replaced my Parasound A21 with a JR M525. It has taken my system to new levels: soundstaging, spacing between instruments, tonality, and a natural midrange. The M525 is the first amp I've ever owned that presents a 3 dimensional soundstage. All that being said, now I wonder what improvements going from the M525 to the JR S2 integrated or bridged M525s will yield? Is it a night and day difference? Are bridged M525 better than the S2? My system: Aerial 7Ts, PS Audio DirectStream DAC, Bryston BDP-2, and all Wireworld Silver 7 cables.
ricred1
kijanki's avatar
kijanki
4,428 posts
 
Ricred1, I stated 22% loudness increase, but it would be true for 2x loudness. I forgot that bridging doubles the output voltage, thus quadruples the power. In such case you can count on (substantial) 49% loudness increase. Speaker's minimum impedance remains the problem.

L=k^(1/3.5) where L=loudness, k=ratio of power.

L=4^(1/3.5)=1.49
ricred1 OP
2,005 posts
 
A sincere thanks to everyone who took the time to respond. This thread is representative of how posting a question can be of value...at least to me! I asked the same question to Jeff Rowland technical support and a dealer. I'm disappointed that they didn't take the time to look up my speakers and explain why bridging the 525s may not be the best option.
kijanki's avatar
kijanki
4,428 posts
 
Ricred1, I found them very eager to help. Perhaps it was just the particular support person. Fortunately we have this forum to learn and share
ricred1 OP
2,005 posts
 
Well I'm 95% sure I'm going to get a Capri S2. I love my current sound, but I go direct from my Directstream DAC to the M525. I need the additional gain from adding a preamp. I just hope adding the S2 doesn't degrade the sound.
guidocorona
4,298 posts
 
Hi Richard, I do not expect Capri S2 to degrade the sound, but it is likely to modify the tembre very subtly.... Based on my memory of Continuum S2, which includes the Capri S2 linestage circuit, Sound might become slightly warmer, and probably the bass might acquire a little more body.... All of this after appropriate break-in of course.

If you get Capri S2, will you also get the $400 DAC card for it? I have heard that it is quite a treat!

G.
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