High Efficiency Speaker Asylum

Posted by Russ57 (A) on July 17, 2007 at 11:13:15

In Reply to: RE: It was quite clear posted by Paully on July 16, 2007 at 17:53:05

About the worst possible place for crossover parts is inside a speaker cabinet! Not only will it be easier to work on but I bet it will sound better not having to deal with all the sound pressure waves and vibration.

You have done your homework I see and made a wise choice. The Cornwall is about the only other one I'd rather see you have....besides the two other (unamed) ones that are way too big and costly:)

Pay attention to the DCR of the inductors (coils) as they are often part of the crossover design. I know in some of the Klipsch speakers they used oil caps in big metal cans. If you have those I'd keep them. IIRC some had transformers with taps and for sure you want to hold on to them too. And keep in mind what Tom said about Remora's:) You might want to start with damping the horns themselves.

Now you need a top notch turntable.....or reel to reel....LOL...It is a sickness you know!



Russ

• It only gets worse - Paully 19:46:01 07/17/07 (2)
  In Reply to: RE: That is a very smart idea posted by Russ57 on July 17, 2007 at 11:13:15

  The more I get into it. Got the amps, got the speakers (though I have my eye on a pair of Fostex that I might add to the collection though they will be the last Fostex I audition if I don't like them), next is the turntable. Probably a VPI or that direct drive that all the DJ's use which name escapes me for some reason.
  
  The Klipsch guys say to upgrade the caps and resistors but not to touch the inductors on the Chorus II. And thanks for the compliment, I read a great deal and the Chorus II seemed to have the quality, and importantly, the size considerations I needed.
  
  I am not familiar with DCR.
  
  

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  • RE: It only gets worse - Jeff 17:27:37 07/18/07 (0)
    In Reply to: RE: It only gets worse posted by Paully on July 17, 2007 at 19:46:01

    DCR is the series resistance component of the complex impedance of the inductor. This is really a non-linear system due to more than just the hysteresis of the iron core, but it is satisfactory to model it as a series combination of resistance (DCR) and inductance (Le).
    
    
    Jeff Robinson
    
    

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  • DCR= DC resistance as measured by an ohm meter - Russ57 17:20:50 07/18/07 (0)
    In Reply to: RE: It only gets worse posted by Paully on July 17, 2007 at 19:46:01

    It is just something that has to be taken into account in the crossover design. Sometimes it is overlooked when guys want to upgrade with something better.
    
    
    
    Russ
    P.S. You will be happy with Mills resistors:) I don't know what size caps you need so until then...
    
    

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