Quick Amp question

Pycroft
Pycroft Posts: 1,960
edited December 2009 in Electronics
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 Channel/HT:
Sony SS-M9 P's (ES version)
Sony SS-M1CN Center Channel
Polk RT800 Surround Speakers
Odyssey Stratos Dual Mono Amplifiers
TAD 150 Signature Tube Preamp
Harman Kardon HK354
Sony SACD Player
Post edited by Pycroft on
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Comments

  • heiney9
    heiney9 Posts: 25,249
    edited December 2009
    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 Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Puritan Audio PSM136 Pwr Condtioner & Classic PC's | Legend L600 | BlueSound Node3 - Tubes add soul!
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  • steveinaz
    steveinaz Posts: 19,537
    edited December 2009
    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: Bluesound Node 2i - Preamp/DAC: Benchmark DAC2 DX - Amp: Parasound Halo A21 - Speakers: MartinLogan Motion 60XTi - Shop Rig: Yamaha A-S501 Integrated - Shop Spkrs: Elac Debut 2.0 B5.2
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  • steveinaz
    steveinaz Posts: 19,537
    edited December 2009
    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):
    Source: Bluesound Node 2i - Preamp/DAC: Benchmark DAC2 DX - Amp: Parasound Halo A21 - Speakers: MartinLogan Motion 60XTi - Shop Rig: Yamaha A-S501 Integrated - Shop Spkrs: Elac Debut 2.0 B5.2
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  • Pycroft
    Pycroft Posts: 1,960
    edited December 2009
    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
    2 Channel/HT:
    Sony SS-M9 P's (ES version)
    Sony SS-M1CN Center Channel
    Polk RT800 Surround Speakers
    Odyssey Stratos Dual Mono Amplifiers
    TAD 150 Signature Tube Preamp
    Harman Kardon HK354
    Sony SACD Player
    · Share on FacebookShare on Twitter