Propeller Head Plaza

Posted by RBP (P) on April 08, 2003 at 18:02:37

In Reply to: 8vus slew rate, damping factor dropping to under 10 posted by rcrump on April 07, 2003 at 20:54:13:

....The chart in the service manual is at 400 for dampning factor at 1K. 20 is the dampning factor at 20K.

A dampning factor of 3 is usually suffceint.

8V in a microsecond seems pretty quick. The transformer weighs in at 28 lbs as well.

Specs look good, the sound compared with some 3000 to 6000 dollar modern amplifiers is on par. Very very close to my MC2500 McIntosh. Surprisingly close. The Adcom GFA 555 is a dog compared to it in tightness of bass and fluidity of the mids and extream highs. I have 3 examples of the GFA555..so it is not a "bad one"

That is why I asked...has anyone heard one lately?...and to John Curl, what do you think?

I agree, some vintages such as the series II had a shouty midrange and recessed top end.

Primarily, I posted this here as per how the topography of the design compares to some of the more modern equipment.

Ya just have to hear one of 'em again!
Audio AsylumŽ Signature line: Hearing is believing.

• Re: ? - john curl 16:40:56 04/09/03 (0)
• Re: ? - john curl 19:52:47 04/08/03 (1)
  • Ok - RBP 21:36:27 04/08/03 (0)