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Thread: Back in the 50s, a new Hartsfield is built

  1. #61
    Senior Member rs237's Avatar
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    a little helper
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  2. #62
    Senior Member rs237's Avatar
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    Mounting the rear enclosure Assy (Coffin lids)
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  3. #63
    Senior Member rs237's Avatar
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    the Woofer , 150-4 (unfortunately, not 150-4C).
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  4. #64
    Senior Member rs237's Avatar
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    Mid's 2441 and High 2402 or 2405 . Optically no longer quite so nice, but all with new Dia's.
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  5. #65
    Senior Member rs237's Avatar
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    Later, I would alternate driver test

    TAD 4001, 2440
    2452H-SL
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  6. #66
    RIP 2013 Rolf's Avatar
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    Quote Originally Posted by rs237 View Post
    Later, I would alternate driver test

    TAD 4001, 2440
    2452H-SL
    Why are you doing this to me? (Showing all that good stuff)

    I just get envies! Stop!
    It's really all about music.
    Rolf

  7. #67
    Senior Member rs237's Avatar
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    Quote Originally Posted by Rolf View Post
    Why are you doing this to me? (Showing all that good stuff)

    I just get envies! Stop!
    Rolf,

    Ok then I show the Woofer which I all in the Hartsfield test does not

    regards

    juergen

  8. #68
    Senior Member rs237's Avatar
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    The first listening test setup

    aktive crossover modified JBL M553
    two Thoshiba Aurex SCM-15 for mid and high
    Yamahe PC2602M for the woofer.

    regards
    juergen
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  9. #69
    RIP 2013 Rolf's Avatar
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    Quote Originally Posted by rs237 View Post
    The first listening test setup

    aktive crossover modified JBL M553
    two Thoshiba Aurex SCM-15 for mid and high
    Yamahe PC2602M for the woofer.

    regards
    juergen
    I will suggest some better amps. Not that your amps are bad, but there is better, and you can probably borrow some. ?? The xover I do not know, but JBL sounds good. What are the xover frq's?
    It's really all about music.
    Rolf

  10. #70
    Senior Member rs237's Avatar
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    Quote Originally Posted by Rolf View Post
    I will suggest some better amps. Not that your amps are bad, but there is better, and you can probably borrow some. ?? The xover I do not know, but JBL sounds good. What are the xover frq's?
    Hello Rolf

    Yes you did right. I have only used this amp because I just did. It is only for the first tests. I would like the Speakers with a 25W SE triode amp and passive crossover.Through the long bass horn, however strong run-time differences between woofer and midhorn (about 1m or 3 feet). This, I will probably only through a digital delay can be compensated. Or someone has experience with the calculation of passive Time Alignment Crossovers aka Urei Monitors. Passive when it fails, I will 3 Pass Lab amp's build.

    regards

    juergen

  11. #71
    Senior Member rs237's Avatar
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    Crossover Points
    450Hz and 8kHz .

    regards
    juergen

  12. #72
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    Incredible work. I'm very impressed and a little jealous of your skill.
    The pic in post 2 cracked me up.

    Reminds me to get to work on my current project.....

  13. #73
    Senior Member rs237's Avatar
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    Hello A9X,

    Thank you for your comment.

    The first measurement, not so bad.

    regards
    juergen
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  14. #74
    Senior Member rs237's Avatar
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    I like that less
    The woofer has a delay to the Mid-Horn of 3,56 mSec .
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  15. #75
    Senior Member rs237's Avatar
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    Mid> High delay 0.9 mSec = 31cm (1 feet). That I could control, it is true. (Sorry the photo is bad).Also, the measure to vote.
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