|
Critic's Corner Discuss a review. Provide constructive feedback. Talk to the industry. |
|
|
|
Critic's Corner Discuss a review. Provide constructive feedback. Talk to the industry. |
|
In Reply to: RE: Finally, an accurate amplifier... posted by Tony Lauck on December 11, 2014 at 21:19:51:
Nothing of human manufacture is absolutely perfect. However, the deviations in the frequency response of the Bryston 7B SST2 appear to be inaudible in normal high fidelity use, including the frequency response into the simulated speaker load. It seems to be well within the ABX Matching Requirements:
http://djcarlst.provide.net/abx_crit.htm
John Atkinson wrote:
"The Bryston's output impedance was low for a balanced design, at 0.11 ohm at low and middle frequencies, rising slightly to 0.17 ohm at 20kHz. As a result, the modification of the amplifier's frequency response due to the Ohm's Law interaction between its source impedance and that of the speaker will be small. With our simulated loudspeaker, the variations in response remained within ±0.1dB limits (fig.1, gray trace). The amplifier's response into 8 ohms didn't reach –3dB until almost 200kHz (fig.1, blue), which correlates with the well-defined 10kHz squarewave response (fig.2). The 7B SST2's output does start to fall slightly above 10kHz into lower impedances; into 2 ohms (fig.1, red), the output at 20kHz is down 0.4dB, though this will have no subjective consequences."
-----
"A fool and his money are soon parted." --- Thomas Tusser
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- RE: Finally, an accurate amplifier... - Pat D 16:27:01 12/12/14 (7)
- RE: Finally, an accurate amplifier... - Tony Lauck 17:40:55 12/12/14 (6)
- RE: Finally, an accurate amplifier... - Pat D 18:41:54 12/12/14 (1)
- Oh, you "suggest"? That's so generous of you.... - carcass93 15:25:40 12/13/14 (0)
- Sorry - E-Stat 18:04:08 12/12/14 (3)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]
