Snapper measurements by Thomas Norton
http://www.soundandvision.com/content/manley-snapper-monoblock-tube-power-amplifier-measurements
http://www.soundandvision.com/content/manley-snapper-monoblock-tube-power-amplifier-measurements
Tube Amp for Martin Logan Speakers
Snapper measurements by Thomas Norton http://www.soundandvision.com/content/manley-snapper-monoblock-tube-power-amplifier-measurements |
Hi Unsound, The Manley Snapper has a single output tap, which is described as having been optimized for a 5 ohm load. Its output impedance is specified as 1.5 ohms, as George indicated. Its specified damping factor of 4.7 is slightly inconsistent with that (8 ohms/4.7 = 1.7 ohms; 5 ohms/4.7 = 1.06 ohms), but is in the same rough ballpark. You might be recalling having read something in which the author confused the output impedance of a tap with the load impedance the tap is optimized for. A not uncommon error. Best regards, -- Al |
George, if I may be a bit pedantic as well, although multiplying the 1.5 ohm specified and measured output impedance by the specified damping factor of 4.7 ohms equals 7 ohms, both the manual and this page at the Manley website clearly state that the output is optimized for a 5 ohm load. As I indicated the numbers are not quite consistent, but I would be inclined to think it more likely that the damping factor spec is inaccurate than the 5 ohm figure. In part because I note that the damping factor number does not appear in the manual, but the 5 ohm figure does. And also because maximum power ratings are provided only for 5 ohms and 8 ohms, not 7 ohms, with the 5 ohm capability being higher than the 8 ohm capability. Regards, -- Al |