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Thread: 604-8K or 604-8L in M600 Maestro?

  1. #11
    Senior Hostboard Member gearfreak's Avatar
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    Re: 604-8K or 604-8L in M600 Maestro?

    Item number: 180445746577

    If these go for the BIN for 5k... I might just have to cash out of mine!

  2. #12
    Senior Hostboard Member gearfreak's Avatar
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    Re: 604-8K or 604-8L in M600 Maestro?

    Interesting differences noted for posterity...

    Mine came with handles on the side (which I never questioned as non-original, but noting also that they are not shown in the spec sheet pic) perhaps they were an option or aftermarket.

    As well, mine do not have the 4 (felt pads?) shown on the bottom of those.

  3. #13
    Senior Hostboard Member bowtie427ss's Avatar
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    Re: 604-8K or 604-8L in M600 Maestro?

    As well, mine do not have the 4 (felt pads?) shown on the bottom of those.
    pretty sure those are flypoints, just T nutted holes in this case.
    Not all vegetables make good leaders.

  4. #14
    Senior Hostboard Member oface1's Avatar
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    Re: 604-8K or 604-8L in M600 Maestro?

    Wow,, talk about up charging...

    He had this posted on Craig's about a year ago for $2.5k or less, & I thought this was a bit excessive... now he is asking $5k... they might not be that common, but man this much?


    -chris

  5. #15
    Inactive Member whitebroncoii's Avatar
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    Re: 604-8K or 604-8L in M600 Maestro?

    FYI for the group:

    The M600 and 938-8A used a high-power version of the 604-8K. This was not the first time a high-power 604 was produced by Altec. I have a data sheet and installation instruction for the model 904-8A. The documents are dated 1984 and 1987. The 904-8A was rated at 120W (1984) and 150W (1987). It used a higher power woofer voice-coil, a Symboitic HF diaphragm and what appears to be a standard 604-8K crossover with 1/4" connectors added to the front panel.

    The 904-8A included the network and was sold as a component to be installed in customer built 930, 620, or 612 enclosures.
    Experience is Knowledge

  6. #16
    Senior Hostboard Member bowtie427ss's Avatar
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    Re: 604-8K or 604-8L in M600 Maestro?

    The 904-8A included the network and was sold as a component to be installed in customer built 930, 620, or 612 enclosures.
    I'm pretty sure it also uses a heavier cone, same or similar to 421 maybe? At any rate, the LF section of 904 does not have the tonal/timbral characteristics of a 604, park em side by side and give a listen.
    Not all vegetables make good leaders.

  7. #17
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    604-8K or 604-8L in M600 Maestro?


    Old Guy's Avatar
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    Re: 604-8K or 604-8L in M600 Maestro?

    Quote Originally Posted by whitebroncoii View Post
    FYI for the group:

    The M600 and 938-8A used a high-power version of the 604-8K. This was not the first time a high-power 604 was produced by Altec.
    Actually first was the 604 HPLN (High power , less network)

    http://www.altecpro.com/pdfs/vintage...%20Speaker.pdf

    Though by later standards that wasn't high power...it handled more than a stock 604...
    Your neighbors called. They like your music.

  8. #18
    Inactive Member whitebroncoii's Avatar
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    Re: 604-8K or 604-8L in M600 Maestro?

    Quote Originally Posted by Old Guy View Post
    Actually first was the 604 HPLN (High power , less network)

    http://www.altecpro.com/pdfs/vintage...%20Speaker.pdf

    Though by later standards that wasn't high power...it handled more than a stock 604...
    I have reread my last post and I actually did not say the 904-8A was the first.
    I think I said the component used in the M600 was not the first.
    Experience is Knowledge

  9. #19
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    604-8K or 604-8L in M600 Maestro?


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    Re: 604-8K or 604-8L in M600 Maestro?

    Quote Originally Posted by whitebroncoii View Post
    I have reread my last post and I actually did not say the 904-8A was the first.
    I think I said the component used in the M600 was not the first.

    Sorry if it sounded like a correction, was more just to raise the point...
    Your neighbors called. They like your music.

  10. #20
    Inactive Member whitebroncoii's Avatar
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    Re: 604-8K or 604-8L in M600 Maestro?

    Quote Originally Posted by Old Guy View Post
    Sorry if it sounded like a correction, was more just to raise the point...
    And you made an excellent point.
    The 604-HPLN and the 904-8A are little known members of the club.
    Either one could be rebuilt into a true 604!
    Experience is Knowledge

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