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Aiwa rack system scroe

Discussion in 'Solid State' started by scoloheros, Nov 3, 2018.

  1. savatage1973

    savatage1973 Addicted Member

    NW Pennsylvania snow belt
    Read folks--put on the specs and READ--the specs are for different models of amps--BX-120H, and the others for the BX-120 G,E,K, and Z models. They are all still rather vague, but I'd venture to guess about 50 wpc of "useable" power from any of them.


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  2. scoloheros

    scoloheros Well-Known Member

    This is the BX-120H model but I don't understand what this means, 100W+100W (10%, 8ohms) vs. total harmonic distortion: 0.01% 50W+50W 20 Hz - 20 kHz 8 ohms. It's a tech quest I don't understand.
  3. imral3

    imral3 Super Member

    Blackwood, New Jersey
    I'd tend to think there was a typo for the 100w rating in that it should have been "100w+100w into 4ohms and not 8ohms with 10% THD." The 50w per channel with .01% sounds more reasonable.
    luxmaster likes this.
  4. bowtie427ss

    bowtie427ss arigato gozaimashita Subscriber

    Land of Milk & Honey Boo Boo
    No 4 ohm loads on these amplifiers.

    The service manual clearly states A or B speakers 8-16 ohms, A + B speakers 16 ohms

    The only audio spec differences between the "H" model of the BX-120 and all the other models is the input sensitivity of 1v for rated power which is 75w + 75w @ 8ohms all models, and it also clearly states the additional power rating of 100w + 100w 10%thd @8ohms for the BX-120H................... i'm not sure what the mystery is. :dunno: To be clear, it means when you try to drive it beyond rated power the distortion goes way up, pretty much like every other amplifier ever made.

    Factor that 100 watt distortion rating with the fact it is not rated to handle a 4 ohm load in any way, and what you have is an amplifier that won't take kindly to being pushed beyond it's limits.

    The other models of BX-120 have an 800mv input sensitivity for rated power(for those wondering).

    For all models of BX-120 the FTC rule U mode rating is 75 watts per channel Min. RMS @ 8 ohms, from 20 hz- 20 khz, with no more than 0.02% Total Harmonic Distortion.

    BX-120U AC 120volts 60 hz

    BX-120G, K AC 240 volts 50/60 hz

    BX-120H AC 120/220/240 volts switchable 50/60 hz

    BX-120E, Z AC 220 volts 50/60 hz
    Last edited: Nov 8, 2018
  5. scoloheros

    scoloheros Well-Known Member

    OK that makes more sense to me. For me it's nothing more than needing to understand the tech better.
    Last edited: Nov 9, 2018 at 1:24 PM

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