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  1. #1

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    Default Quick Amp question

    Does an amp have to say that it can handle a 6 ohm load to power them? For instance, my Soundcraftsmen amp is rated at 205 watts for 8 ohms, and I believe 325 watts for 4 ohm. It says nothing about 6. I'm assuming if it can handle 4 ohms, it can handle 6, correct?

    Thanks.

    James

  2. #2

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    Yes.....
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

    Pass Aleph 30; Eastern Electric Mini Max; Adcom GDA600; MIT S3/Z Pc; SDA 1C; Squeezebox; Tubes add soul!

  3. #3

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    Yep, that Soundcraftsmen will power just about anything. Remember, speaker impedance ratings are "nominal" which means an impedance of 8 ohms is just an average over the frequency band for that speaker.

    Source: Squeezebox Touch/CIA Power Supply
    DAC: Benchmark DAC/PRE
    Linestage: Placette RVC Passive
    Power Amp: Parasound HCA-1500A
    Speakers: Harbeth Compact 7ES-3 Monitor
    Subwoofer: SVS PB12-NSD

  4. #4

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    To better illustrate, here's a Paradigm Ref Studio 60, rated nominally at 8ohms, note how impedance shifts with differing frequencies (solid trace). This one sweeps from 3ohms minimal (@ 200Hz) to a max of 23ohms (@ 75Hz):
    Attached Images  
    Last edited by steveinaz; 12-10-2009 at 12:09 PM.

    Source: Squeezebox Touch/CIA Power Supply
    DAC: Benchmark DAC/PRE
    Linestage: Placette RVC Passive
    Power Amp: Parasound HCA-1500A
    Speakers: Harbeth Compact 7ES-3 Monitor
    Subwoofer: SVS PB12-NSD

  5. #5

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    I'm not sure I understand that. It's okay though, not all is meant to be understood. George says he know what people would say...well let's see.

    What would be better to power SDA 1C's - the Soundcraftsmen PCR800 OR a B&K ST-140. Anyone have experience with either of these amps actually powering these speakers?

    Thanks

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