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Thread: JBL 4355 Bi amping Question.

  1. #1
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    JBL 4355 Bi amping Question.

    Is it possible for the 4355 to be used with a single amplifier (McIntosh MA9000 capable of driving 2 ohm loads) by using (an) external passive crossover(s)? An active crossover would require an additional amplifier which I would prefer not having to do as the MA9000 has ample current capability for the task.

    If so, can anybody recommend a passive crossover(s) that would fit the purpose? The system needs to cutoff above and below 290 Hz @ -12 dB/octave.

    Just received a specially ordered equipment stand that cannot accommodate additional equipment and of course the cost of additional amplifier so the importance of passive bi amplification - if at all possible - cannot be overemphasized in this situation.

    Thanks for any help.

  2. #2
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    The 4355 was designed to be bi-amped. Not 12 but 18 DB/Octave.
    I don't recommend to try mono amp. But you do whatever you want!
    And I'm sure someone else will say go for it...

  3. #3
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    Quote Originally Posted by Challenger604 View Post
    And I'm sure someone else will say go for it...
    It won’t be me.

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    Quote Originally Posted by AS-21 View Post
    Is it possible for the 4355 to be used with a single amplifier (McIntosh MA9000 capable of driving 2 ohm loads) by using (an) external passive crossover(s)? An active crossover would require an additional amplifier which I would prefer not having to do as the MA9000 has ample current capability for the task.

    If so, can anybody recommend a passive crossover(s) that would fit the purpose? The system needs to cutoff above and below 290 Hz @ -12 dB/octave.

    Just received a specially ordered equipment stand that cannot accommodate additional equipment and of course the cost of additional amplifier so the importance of passive bi amplification - if at all possible - cannot be overemphasized in this situation.

    Thanks for any help.
    Could give Phil Marchand in Rochester, NY a call. He does this sort of custom stuff. Basically agree with Challenger 604 (post#2).

  5. #5
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    Have decided to go with a different pair of JBLs that can be single amplified.

    Thanks for the replies.

  6. #6
    Senior Member ivica's Avatar
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    Quote Originally Posted by AS-21 View Post
    Is it possible for the 4355 to be used with a single amplifier (McIntosh MA9000 capable of driving 2 ohm loads) by using (an) external passive crossover(s)? An active crossover would require an additional amplifier which I would prefer not having to do as the MA9000 has ample current capability for the task.

    If so, can anybody recommend a passive crossover(s) that would fit the purpose? The system needs to cutoff above and below 290 Hz @ -12 dB/octave.

    Just received a specially ordered equipment stand that cannot accommodate additional equipment and of course the cost of additional amplifier so the importance of passive bi amplification - if at all possible - cannot be overemphasized in this situation.

    Thanks for any help.
    Hi AS-21,

    may be You can start the project with 4435 info
    http://www.jblproservice.com/pdf/stu...ies/4435lr.pdf

    but some work, almost the same as in 4345 network has to be elaborated or may be
    helpfull
    http://www.audioheritage.org/vbullet...l=1#post354239


    All the Best
    Ivica

  7. #7
    Administrator Mr. Widget's Avatar
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    Quote Originally Posted by AS-21 View Post
    Have decided to go with a different pair of JBLs that can be single amplified.

    Thanks for the replies.
    Excellent decision. I was going to suggest that myself, but was afraid it would sound too snarky.

    What other speakers are you considering?


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