Planar Speaker Asylum

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Planar Speaker Asylum

Crossover switch

65.218.140.58

When I have biamped my MMG's it was mostly a case of stripping everthing out, installing a new back mount with a SpeakOn connector. Easy and quick

Now I am looking to a little more sophisticated approach - spurred on by the Tazmonn's MUG posting. Here is my ne Crossover that uses just a simple DPDT switch to enable/bypass the original crossover. Tazmonn's inspired approach was to use the "jumper" connections for the tweeter connection and the standard input banana's for the LP section.

Three most important things in Audio reproduction: Keep the noise levels low, the power high and the room diffuse.

Follow Ups:

For Reference - standard crossover - BigguyinATL 13:58:38 09/23/10 (6)
here
Three most important things in Audio reproduction: Keep the noise levels low, the power high and the room diffuse.
- RE: For Reference - standard crossover - Davey 17:05:46 09/23/10 (5)
  Not sure you're aware, but a standard crossover doesn't have a 0.75mH coil on the woofer.....it's a 2.2mH coil.
  
  You're bi-amp reconfiguring switch setup looks good. I think I'd remove the 100 ohm resistor from across the woofer shunt capacitor though.
  
  Cheers,
  
  Dave.
  - RE: For Reference - standard crossover - BigguyinATL 19:25:44 09/23/10 (4)
    The newer - single order crosover uses a 2.2mH. the original MMG's used a second order as diagrammed
    That simplifies the switching configuration idea - the capacitor and it's draining resistor in the LP section can be omitted.
    Three most important things in Audio reproduction: Keep the noise levels low, the power high and the room diffuse.
    
    Edits: 09/24/10
    - No, it's 2.2 uH - neolith 09:14:07 09/24/10 (3)
      The subject line should read 2.2 mH not uH . Thank you to Davey for the correction.
      You are looking at Tazman's schematic. Check the official schematic and layout from Magnepan that was posted by Bob Cole
      �
      
      I plan to procrastinate my demise for as long as possible. In the meantime, I practice by putting off all the little stuff.
      
      Edits: 09/24/10 09/24/10 09/24/10
      - RE: No, it's 2.2 uH - Davey 13:25:37 09/24/10 (2)
        
        In Reply to: RE: No, it's 2.2 uH posted by neolith on September 24, 2010 at 09:14:07
        
        It's 2.2 millihenry. Trust me.
        
        Dave.
        
        RE: No, it's 2.2 uH - neolith 17:05:12 09/24/10 (0)
        
        In Reply to: RE: No, it's 2.2 uH posted by Davey on September 24, 2010 at 13:25:37
        
        Absolutely 2.2 milliHenry A little lapse of the old noggin'. I will edit my post so future generations don't wonder why their woofers are running full range :)
        �
        
        I plan to procrastinate my demise for as long as possible. In the meantime, I practice by putting off all the little stuff.
        
        Davey is correct - bobcole 14:12:37 09/24/10 (0)
        
        In Reply to: RE: No, it's 2.2 uH posted by Davey on September 24, 2010 at 13:25:37
        
        The drawing I got from Magnepan has a "write-o" or is just illegible.

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