2. amps-preamps
  3. 1323999458

Have I mismatched my preamp/amp?

Hey all; I recently purchased a Cary SLP-50B which I will be mating to a Rawson clone of the Pass Aleph 2. When I started doing the math, I know I'm slow, I looked up the output impedance of the Cary and its Aleph 2 from the Pass site and it's 2.2 K Ohms I checked the Pass site for the Aleph 2, being I don't have the exact spec on the Rawson, and the input impedance is 10 K Ohms unbalanced and 25 K Ohms balanced differential. The Cary only has unbalanced outputs. So, how mismatched is this? I understand the 20:1 rule and I'm way off. My point was to use the Cary to warm up the sound a bit of the Rawson, its brutally sharp and I thought warming it up was a good idea. Advice/Comments are welcome. Jack
fz1jmp
fz1jmp OP
33 posts
 
Thanks for the response, but I did not mean I did not like my amp. They sound excellent. I was looking to warm them up a bit. When I said they were brutally sharp, I should of been more expressive, they reproduce the music on the sharper side, I like a tad of warmth, I figured I would be able to warm them up with a nice tube preamp.
fz1jmp OP
33 posts
 
So, I gotta say this is a great site. I send tim rawson an email and he responded,and it was a good response. He said typically it should be either 100k ohms or minimum 47k ohms input impedence on his amp, all nicely above the 10:1 or 20:1 ratio. I suppose I'm in good shape.
stringreen's avatar
stringreen
6,490 posts
 
Nothing to worry about...if it sounds good to you, that's the only criteria.
marakanetz's avatar
marakanetz
5,473 posts
 
I would be surprised that Aleph series would have such low input impedance. If that's the case you'll have dynamic headroom limitations. Since your sound is sound than enjoy the music!
unsound
7,335 posts
 
I have too much respect for Nelson Pass to contribute advice to those that buy Pass "clones".
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