Thanks George, that was a great piece of information . It just reinstated my faith in the R1.5 and this forum. Im definitely buying it now.
Usher R1.5 should I buy?
Hello all, I thought this is one forum where I should ask and take the approval of all the experienced souls here before I pull the trigger today or next week satday. The Question is should I buy the Usher R1.5 , is it as good as the press says or the reviews here or around the web suggests.As for speakers I have a Mission MX5 for now with Denon PMA1500AE /DCD1500AE/TU1500AE as amp CD and tuner with Chord cables. This is the cheapest power amp I can afford at the moment , that too class A till some watts. If anyone has any encounter with this amp please advise me. I listen to only RocknRoll and very little Jazz ( read Norah Jones , Diana Krall) buy it's always Queen and Ledzep , Floyd GnR, CCR,GFR,Lamb of God Korn , Blue Man Group, etc etc. I'm a SACD enthusiast,s o no vinyl in the mix. Love warm rich lush and not forward sounding gear. Please advise if the Usher is good enough as a power amp.
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vvvinashhhI might also add the ones I've played around with, were under biased,, and needed to to be adjusted a bit higher to get the Class A bias of the Thresholds, "as Nelson palm detector adjustment", enough bias to keep the palms of you hand on a fully warmed up heatsink for at least 6 seconds, (bricklayer exempt from this test) Cheers George |
I had the circuit, but it’s long gone now, but if you warm it up with the lid on for at least an hour, and if still not warm enough (use Pass palm test) Monitor the bias across the emitter resistors (yes they used them the same way as NP did, collectors drove the speakers) with a DMM and increase 10mV at a time till you get the right heatsink temp, both channels. And yes more cap uF the better on the power supply, but many small ones are better than big ones, as they can release their storage quicker and give you far better transient response. PS: Just found the circuit of the Usher 2.5 send a PM if you want it with your email address. Cheers George |
Thanks so much George ! My email id is vvvinashhh@yahoo.co.in . One more thing is there a Usher Version 1 and Version 2 ? I gathered this while talking to US based Usher dealer. Will that make a difference? If there's a difference then what is it and how do I differentiate cosmetically or internally between the v1 and v2? |
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