Propeller Head Plaza

Re: To John Curl, andyC and those who want a real technical discussion

67.180.4.250

[ Follow Ups ] [ Post Followup ] [ Thread: Display All Email ] [ Propeller Head Plaza ]

john curl

(M)

In Reply to: To John Curl, andyC and those who want a real technical discussion posted by morricab on March 15, 2007 at 03:45:05:

Personally, I would think that your amp example would be OK for a horn loaded speaker, but marginal for a direct radiator. Your results may vary.

Follow Ups:

Re: To John Curl, andyC and those who want a real technical discussion - morricab 16:09:13 03/15/07 (2)
Is that because of the sensitivity difference between the two types of speakers (normally anyway)? Remember though some direct radiator speakers like the Wilson Watt/puppy are about 93 db sensitive (I have a friend with the original X1 that is 95 db/watt). Several speakers from Cabasse and Focal are also well above 90db/watt making 10 watts in a moderate room (think 30m2 or less) more than sufficient for all but the most headbanging affairs. I am getting very good results with my 87 db/watt (equivalent sensitivity) 2.4 meter tall eletrostats. My room is also not very large (25m2).
In big American homes obviously if the room is 70 or 80m2 and you sit 6 meters away more power will be needed than a SET can provide unless you are using horns.
- 2x1W is good enough for a 91db/m speakers for a small room. - cheap-Jack 08:04:47 03/16/07 (1)
  Hi.
  My last project last November : a 2x1W IDHT SET power amp, driven directly from a standard DVD player (without linestage at all!),
  can handle a pair of Westlake BBSM-6 referenc monitors (91dB/W/M)
  gracefully in a very small living room (condo type), sitting 8ft away.
  Surprisingly it plays dynamic firecrackers, like Wagner, Beethoven
  nicely, not a bit of shy vs its counterpart: 2x100W class A SS dual mono power amp (Swiss Physics 6A). FYI, that tiny 2W tube amp got no global NFB at all.
  c-J
  - Re: 2x1W is good enough for a 91db/m speakers for a small room. - morricab 13:53:01 03/16/07 (0)
    It has been my experience that many amps with feedback sound dynamically "sat on" like they would wake up if you just crank the volume but it never really comes alive. My amp (KR audio VA350i) also has no feedback (neither does my all tube DAC or tube phono stage for that matter).

This post is made possible by the generous support of people like you and our sponsors:

The Cable Cooker

You can not post to an archived thread.