High Efficiency Speaker Asylum

RE: Altec 604-8G versus Tannoy 15" Golds

69.230.16.45

In Reply to: RE: Altec 604-8G versus Tannoy 15" Golds posted by CharlieV on August 11, 2007 at 11:01:31

What about Electro Voice 15TRXB? How do these compared to Altec 604-8G and Tannoy 15" Golds?

Follow Ups:

RE: Altec 604-8G versus Tannoy 15" Golds - djk 02:18:16 08/12/07 (5)
Doesn't have the midrange, high-end rolls off pretty low (10Khz on some versions), fragile tweeter, and I find the tweeter irritating.
- ping djk re: PPSL - MTL-2 - mike.e 18:31:31 08/12/07 (4)
  Hi djk
  Did PPSL look like MTL2?
  Did you use Eminence 15"s?
  Harmonic distortion looks relatively low.
  Did the thermal patents do anything?
  
  Mike.e
  - http://img171.imageshack.us/img171/4033/mtl2et7.jpg (Open in New Window)
  - RE: ping djk re: PPSL - MTL-2 - djk 20:57:46 08/12/07 (3)
    "Did PPSL look like MTL2?"
    
    Not much. The EVs are not PP, and there are two seperate enclosures, mine share a common back volume. My form factor was 36" wide vs the EV being 22.5", same basic size, but easier stacking.
    
    "Did you use Eminence 15"s?"
    
    You can use any woofer that is quiet from the back side, I use mostly Eminence.
    
    "Harmonic distortion looks relatively low."
    
    I don't consider in excess of 3% at 60hz as being particularly low. It will drop by and order of magnitude in push-pull.
    
    "Did the thermal patents do anything?"
    
    The extended pole helps with heat, and the teflon on the poles reduces arcing when the coil expands with heat. Having said that, I don't generally use EV woofers (except 12s for horn loaded mids).
    - RE: ping djk - mike.e 21:59:44 08/12/07 (2)
      Hi
      Ah more like this?[image]
      The open chamber is tuned (read your other post)- Olsons book has the equation for this from memory?
      
      -Not liking the bulk of pipey 0.5pi horn,considering DTS-20 inspired tapped horn(diyaudio.com thread)- but strange 2metre long shape harder to transport.
      
      Regards
      Mike.e
      http://img166.imageshack.us/img166/5340/ppslyc3.gif (Open in New Window)
      - PPSL - djk 00:07:13 08/13/07 (1)
        
        In Reply to: RE: ping djk posted by mike.e on August 12, 2007 at 21:59:44
        
        More like this.
        
        RE: PPSL - mike.e 14:21:58 08/14/07 (0)
        
        In Reply to: RE: PPSL posted by djk on August 13, 2007 at 00:07:13
        
        Thanks!
        
        Mike.E

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