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Tom Mobley

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Posts posted by Tom Mobley

  1. get the Crites stuff and don't look back.  NO to the 12" driver.  Bobs K-33 replacement is excellent, fully scienced out.    he has a good K-55 driver replacement.   See if he has a drop-in K-500 replacement horn.  He does have a drop-in K-77 replacement that's actually better than a k-77.  His crossovers are known good.

    • Like 1
  2. Long time no type.  Hoping you are all well.

     

    A long time ago one of the guys (John Albright?) posted up a crossover mod schematic for the Heresy.  I have my original untouched Heresys I bought new in 78.  I want to run this mod on them as I've always thought they were pretty shouty.  it calls for addition of .35mH inductors and and an 11ohm 20 watt resistor.  I"ve sourced the inductors but I'm having a little trouble finding reasonably priced resistors.   Anybody know how sensitive this mod is to the exact value of the resistor?  like what happens if I use an 8ohm instead of the 11?  Does the resistor need to be the non-inductive type?

     

    Expiring minds want to know....

  3. you can ama about engines.  I'm an advanced expert on engines.I haven't a Triumph apart in 30+ years though.  just curious.

     

    in this day and age you can rebuild anything.  custom piston and ring manufacturers make anything.  babbit type bearings cam still be tough, but I'm not sure your engine even has any of those.

     

    it's a 350, not a 500? 

  4. Dean, do you remember when I built that set of over-the-top DBB Cornscales?  Yopu did the crossovers for them.  They were really pretty.  That guy sent me wire to use.   Wire was claimed  to treated with with some kind of deep sea shark oil.  Looked like decent copper wire to me, I used it.  I didn't get any of shark oil on me though.  

  5. was it John Albright?  too much water under the bridge for me.

     

    Mine are 77s, bought new, been semi-retired for several years now.  Kinda like me.  Anyway, got them out the other day, immediately noticed the brightness.  Want to use them as primary in a small room.  I thought I has saved the diagram in my Crossovers folder but no sign of it.  I'll run them off a BT connection through a small digi-amp.  I think it's a Yammie about 20W/channel.  Should be OK in a small room.  It really sounded good with my '60 Khorns.

     

    Anybody remember?

    • Like 1
  6. I have 2 '60 Khorns and a homebuilt center Belle.  There's an ancient Dyna pre-amp and an AL-700p three channel digi-amp joined by a PWK splitter.  No TV, music only.  the whole thing sounds as good as anything I've heard outside of a high end  demo room.  

     

    I really can't hear any difference between LS and Belles myself.  I know some claim they can but I can't.  might be due to my damaged hearing (guns + racecars +  plywood mills) but there it is.

     

    It's interesting varying the volume of the belle with the splitter.  It affects both the width and depth of the sound stage.  I'm going to go try the   Di Meola tune linked above.

     

    Claude, good to see you.  I remember you from back in the olden days around the turn of the century.  :)  Don't get on here much anymore.

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