More 2-way Altecs

Discussion in 'High Efficiency' started by jmathers, Dec 6, 2017.

  1. jmathers

    jmathers Junior Member

    I recently acquired a pair of Altec 414-16As off CL for a decent price, and figured I'd try to find some decent horns to pair up with them. Once I had the woofers it didn't take me long to run across the JE Labs blog and read JE's posts about his 2-way Altec project.

    I managed to find a set of 909-16A drivers and a pair of 32b horns off ebay. And with great luck a local audiophile/mad scientist had a pair of Altec 614 cabinets for a phenomenal price.
    And all this came together in about two weeks.

    I ordered mock up parts (poly caps) for JE's N1600 crossover and got it all singing in less than a month. I've since replaced all the polys with paper-in-oils and found much improvement. Still dialing everything in but I'm enjoying the sound - dynamic, rich, alive.

    Thanks to all the Altec fanatics out there for the help and encouragement.

    [​IMG]

    https://photos.app.goo.gl/idiJjUZgKEfzTeSD2

    [​IMG]

    https://photos.app.goo.gl/Sl2EN0UtkpbcYayx2
     
    Last edited: Dec 6, 2017
    Celt, Olson_jr, opa1 and 1 other person like this.
  2. TubeHiFiNut

    TubeHiFiNut Administrator

    Well done! :)

    Which amps do you prefer?
     
  3. opa1

    opa1 Senior Member

    Nice work! Do tell more!
     
  4. Redboy

    Redboy Active Member

    Nuts, I can't see the pics.

    I'm working on a similar project, but it's progressed at a glacial pace. Typical, here.
     
  5. TubeHiFiNut

    TubeHiFiNut Administrator

    Hmmmmm.....I really like those horns. :)
     
  6. jmathers

    jmathers Junior Member

    Good question! I was able to try a wonderful 45 amp (built by Redboy) that I borrowed from Olson. I thought initially with this amp that I needed a little more power but I think that not to be the case after some experimentation. And I tried an Almarro A205 EL84 integrated that I thought sounded excellent and was about the right wattage for me.

    I'd like to try more single-ended amps - I'm searching for one now (or thinking about building one this winter maybe).

    I only have either an AES AE-25 Superamp (about 25 watts) or AES Sixpac monoblocks (about 60 watts) otherwise. Both are much more powerful than what I need but I'm still enjoying them with the preference right now for the smaller powered Superamp.
     
    Last edited: Dec 6, 2017
  7. jmathers

    jmathers Junior Member

    My usual project speed is glacial. This fell together with serendipity for some reason.

    It's not without some issues though. For whatever reason one of the horn drivers appears to be significantly louder than the other. I've tried to troubleshoot by swapping drivers around and checking the outer cover wiring - I did have to make a couple of repairs to the wire connection - but I still can't fully comprehend it. They weren't a "matched pair" of drivers. They measure around 10 ohms for one and the other about 8 ohms. Seems an insignificant difference to me to account for the volume difference. But I'll keep troubleshooting.

    Don't know why you can't see the pics???
     
  8. TubeHiFiNut

    TubeHiFiNut Administrator

    Have you checked the diaphragms?

    Maybe one original and one after market?
     
  9. airdronian

    airdronian Junior Member

    No pics here either. Redboy, we're not worthy !

    Sounds interesting though.
     
  10. TubeHiFiNut

    TubeHiFiNut Administrator

    I can see the pics. :)
     
  11. jmathers

    jmathers Junior Member

    I'm not sure I'd be able to tell the difference if they were in my hands. That is, they look identical from the top. Maybe I'll take some pics and see what yous guys think. Anyway that would explain the difference....
     
  12. jmathers

    jmathers Junior Member

    Added some direct links to the pics in the first post.
     
  13. Redboy

    Redboy Active Member

    Thank you. The links work but for some reason the embedded images won’t display. Must be one of my settings.

    Your cabinets look great! Nice work on the crossovers, too.

    I’ll be interested to see how things progress.
     
  14. airdronian

    airdronian Junior Member

    Very nice job.

    I gave up on Google Photos for embedded urls (although I use the service all the time) because of this kind of inconsistency.
     
  15. Punker X

    Punker X Junior Member

    Same here couldn't see the pictures, had to hit the links. Also have have never been able link a picture successfully form Google photos.

    Looks great Jeff, love to have a listen sometime.
     
  16. Punker X

    Punker X Junior Member

    I also have a single ended EL84 / 12AX7 single ended amp that I was using before I got my 205A, you are welcome to play with it you want. Sounds a lot like the Almarro.
     
    TubeHiFiNut and Olson_jr like this.
  17. mhardy6647

    mhardy6647 Senior Member

  18. TubeHiFiNut

    TubeHiFiNut Administrator

    Do you have you 614 cabinets on stands?

    Did you make those cool stands for the 32B horns? :)
     
  19. Redboy

    Redboy Active Member

    ...and what's the switch for? Inquiring minds wanna know.
     
  20. mhardy6647

    mhardy6647 Senior Member

    I saw that & wondered too (FWIW).
     

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