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Thread: JBL 3155 + units impedance

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    Senior Member martin2395's Avatar
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    JBL 3155 + units impedance

    I plan to use an OTL amp on my JBL's but I'm not sure what impedance will the amp see while using 2123H/2450J/2405H on 3155 CC'ed networks?

    Has anyone did any measurements what the lowest impedance of this combination is?
    The amp should cope with any load >5.6 ohms

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    Quote Originally Posted by martin2395 View Post
    I plan to use an OTL amp on my JBL's but I'm not sure what impedance will the amp see while using 2123H/2450J/2405H on 3155 CC'ed networks?

    Has anyone did any measurements what the lowest impedance of this combination is?
    The amp should cope with any load >5.6 ohms
    My upgraded 3155 for my 4355's, 2202H, 2441J, 2405H. The impedeance is 6.4.
    I don't know if that can help!

  3. #3
    Senior Member martin2395's Avatar
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    Hi,
    I was thinking more about what the lowest imepdance point is, as it changes with the freuqnecy.
    The measured value at the input is DCR + resistance of the coils and caps

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    43XX (2235-2123-2450-2405-CC 3155)5235-4412-4406-4401-L250-18Ti-L40-S109 Aquarius lV-C38 (030) 305P MkII

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    Senior Member martin2395's Avatar
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    It says 5 ohm minimal but probably for the whole system, should be enough though.

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