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Get familiar with the reaction system: Introducing the Reaction System

An afternoon of testing and fun

isaeagle4031isaeagle4031
in DIY
My buddy Mike decided to ditch the 3ways we built for him a few years ago. The UM12 just wasn't doing it for him. Anyway, he dropped off the upper cabinets for a redesign of the crossover. This was the result of a couple of hours. Not shabby I think. Drivers are the Eclipse W6520R and Dayton RS28F. 2nd order on both, damped on the woofer with a 1R. 1/48 octave scale 
D1PP1Nsquamishdroc

Comments

  • isaeagle4031isaeagle4031
    Sealed enclosure .63 cubes. 
    MzissersonkennykD1PP1NTurn2Nicholas_23
  • ani_101ani_101
    What's going on the bottom?
  • isaeagle4031isaeagle4031
    Probably the dual um12s crossed actively. Or a lab15
  • PWRRYDPWRRYD
    Is that reverse null a real measurement?
  • squamishdrocsquamishdroc
    PWRRYD said:
    Is that reverse null a real measurement?
    Ditto - I have never though of trying a measurement with the tweeter inverted.
  • ani_101ani_101
    squamishdroc said:
    PWRRYD said:
    Is that reverse null a real measurement?
    Ditto - I have never though of trying a measurement with the tweeter inverted.
    If you want to verify the crossover region. but as Craig, the actual measurement is not usually as pronounced as the Sim. So, if this is the actual measurement, (which looks like it is) it indicates a great phase matching in the crossover region.
  • isaeagle4031isaeagle4031
    That is the measured null Craig. I am a little concerned with how low the crossover point is considering Mikes listening habits. The guy could make ac/dc ask to turn it down!

    When I took the raw measurements on the combined of both drivers, it showed a similar null centered at 3k. I knew right then what the slopes would be. I may try a series crossover as well. 
  • Nicholas_23Nicholas_23
    Series xover would be interesting if it comes to fruition

  • PWRRYDPWRRYD
    Hi Chuck.  I hope it didn't sound like I didn't trust your measurement.  I do.  I know that you and I follow the Highest standard Ever :+1:  I use reverse null when sim'n, but I've never been able to actually measure a nice clean dip like that. Great job Brother!
  • isaeagle4031isaeagle4031
    Oh no problem Craig. I would have asked too! Hell i was surpised everything matched so well. 
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