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Mac 275 questions........

After some months of up's and down's with my ASL Hurricanes (just seemed to never stay operational for longer then 2-3 months) I have decided o retire them and get the McIntosh MC 275 (2 amps).

I have some questions for you all and appreciate any input you may have (especially form Mac owners) but opened to all.
My speakers are Infinity RS 1-B's and I will be using the amps to drive the top end of the system (EMIM's and EMIT's). I have a Perreaux 3150B for the bass columns. The Infinities are rated at 4 ohms.
I plan to listen to one amp on top ( I will get one amp in a week) and then when I get the 2nd amp ( a week later) run both in mono.
What will I hear with each application? First with one and then with both? Also can any of you let me know if any of you compared the Mac 275 (in mono) 150 watts with the Hurricanes 200 wpc? The Hurricanes were great but I just could not live with them being up and down so many times.

Thanks to all for your input.

RWD (Rick)
rwd

Showing 3 responses by ggavetti

ggavetti
143 posts
 
Nsgarch, I have read wonderful things about the EH KT-88. Have you ever tried them in the Mac 275 or 2275? Thanks.
ggavetti
143 posts
 
Really?!? I didn't realize they are using EH! When did they start using them? My amplifier is 3 years old, and I was under the impression they used different ones. That's good to know. I have a 2275, and was about to replace stock tubes with a set of EH KT-88 based on a set of rave reviews I have read. I guess the safest bet is to get the reissued GL. Most people seem to be happy with them. By the way, I completely agree with your assessment of the NOS TFK 12AX7's. I bought them for my 2275, and the sound improved considerably. It's much cleaner, detailed, and airy.
ggavetti
143 posts
 
Nsgarch,

I just checked the tubes that I changed in my McIntosh Ma-2275, and they were the AT's...changing them made a big difference. Now, I'd like to see if changing the four 12AX7A can make a difference too. Telefunken never made 12AX7A. They used to make 12AX7's instead. Do you know if I can use those to replace the 12AX7A's? If not, do you have any recommendation in terms of what 12AX7A's I might use? Thanks, Giovanni
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