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

Showing 2 responses by islandmandan

islandmandan
1,260 posts
 
Hello Al, Ricred, Kijanki, and all,

After reading this thread, it has led me to question my intention of using a second Class D CDA 254 amplifier, thus allowing me to use the two of them in bridged mode as monoblocs.

My speakers are of course different, they being Tannoy HPD 315's, 94 db sensitivity and 8 ohms. I don't know if you can draw any conclusions without specific test results, which in any case, wouldn't be available.

My particular application of these drivers are in custom 150 liter bass-reflex enclosures.

I have written to Tom, at Class D Audio, about this, but the expertise available here is without peer.

I'll be thankful for any information that can be provided.

My apologies to Ricred for hi-jacking his thread.

Regards,
Dan
islandmandan
1,260 posts
 
Al, thank you. You have done your usual stellar job of research, before providing a helpful and informative answer.

It looks like the only issue will be the output impedence of my Transcendent Sound GG preamp. I used a 100 ohm Goldpoint stepped attenuator, what comes in the kit is 200 ohms.

Al, your idea of trying one speaker in bridge mode is a good one, I believe I'll try that this evening, and see how it goes.

Thanks and regards,
Dan

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