Correction to my previous post: delete the word "ohms" which appears immediately following the number "4.7"
Regards,
-- Al
Regards,
-- Al
Tube Amp for Martin Logan Speakers
OK Almarg, I'll split hairs with you. With a measured damping factor of 4.7 and an output impedance of 1.5ohms it's closer to an 8ohm tap than a 4ohm tap. But all this can change with a bit more global feed back to raise the damping factor and lower the output impedance. But then Audiophiles don't like the idea of too much feedback, so throw a Zero on it for difficult loads like these speakers the OP has and maybe be happy??? Cheers George |
From here Al. At the The Manley website. http://www.manley.com/msn.php Features and Specifications Manley Snapper Damping Factor: 4.7 Cheers George |
George, the 4.7 number appearing on that page is a specification, not a measurement. On the same Manley page an output impedance of 1.5 ohms is specified, which is confirmed by TJN's measurements in the review you linked to. On the same Manley page, and also in the manual, the statement "optimized for 5 ohms" appears. Maximum output power, input sensitivity, and frequency response are all specified for a 5 ohm load. The 5 ohm power rating is higher than the 8 ohm power rating, for the same distortion level. I see no reason to assume that the 4.7 number is accurate and the 5 ohm number is not. As I said, the converse seems much more likely. Regards, -- Al |