Accuphase A-70 enough to drive Magnepan 20.7 or 30.7? - Page 2
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  1. #11
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    Re: Accuphase A-70 enough to drive Magnepan 20.7 or 30.7?

    Quote Originally Posted by Anatta View Post
    60W is the rated class A power, the actual power available is 130W@8Ohm and 230W@4Ohm; just like the Pass XA60.8 for example is not a 60W amplifier but a 120W one.

    http://www.accuphase.com/cat/a-70_e.pdf

    I don't know how loud the OP likes to listen but the A-70 will give him 100dB peaks at a 3m listening distance without problems with the 86dB sensitive Magnepans.

    http://myhometheater.homestead.com/splcalculator.html
    The class A Bias is supposedly 70 watts @8 ohm , hence the A70 designation, thats 35/35 per channel or 17.5/17.5 @ 4 ohm ...

    Accuphase also rates quiescent draw at 280 watts @idle which approximates 70 watts class A output ..


    Regards ..

  2. #12
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    Re: Accuphase A-70 enough to drive Magnepan 20.7 or 30.7?

    The name has nothing to do with the class A power available, the A-60 had 300W idle consumption.

    http://www.accuphase.com/cat/a-60_e.pdf

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  4. #13
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    Re: Accuphase A-70 enough to drive Magnepan 20.7 or 30.7?

    Numbers aside . . . . .

    I love the balls of the accuphase BUT in my opinion, it would not power the Maggies to a level acceptable. Maggies are an easy load BUT need power.
    Jock

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  6. #14
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    Re: Accuphase A-70 enough to drive Magnepan 20.7 or 30.7?

    Quote Originally Posted by Anatta View Post
    The name has nothing to do with the class A power available, the A-60 had 300W idle consumption.

    http://www.accuphase.com/cat/a-60_e.pdf
    Its 70 watt class A with a an A70 designation , go figure .... regardless the numbers you quoted are way off, extreme irony you picked that to discredit findings ..

    Anyway 83db is what 3.6R Maggie ( Maggie usually claim 86) actually measured, best to hook them up and listen from experience 300/300 is what they usually need ...



    Regards

  7. #15
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    Re: Accuphase A-70 enough to drive Magnepan 20.7 or 30.7?

    Quote Originally Posted by a.wayne View Post
    Its 70 watt class A with a an A70 designation , go figure .... regardless the numbers you quoted are way off, extreme irony you picked that to discredit findings ..

    Anyway 83db is what 3.6R Maggie ( Maggie usually claim 86) actually measured, best to hook them up and listen from experience 300/300 is what they usually need ...



    Regards
    One of the previous versions from Accuphase which was probably the A65 was able to better control the very inefficient MBL 111F's when compared to some 500 watt mono-block amps. WPC is only one piece of the pie.
    Jim

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  9. #16
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    Re: Accuphase A-70 enough to drive Magnepan 20.7 or 30.7?

    The A65 was just a better amp , surely you not suggesting a 500/500 watt Accuphase equivalent is less than an A65 ...

    BTW , Im familiar and have used Accuphase amps since the 70’s ...



    Regards ..

  10. #17
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    Re: Accuphase A-70 enough to drive Magnepan 20.7 or 30.7?

    Quote Originally Posted by a.wayne View Post
    The A65 was just a better amp , surely you not suggesting a 500/500 watt Accuphase equivalent is less than an A65 ...

    BTW , Im familiar and have used Accuphase amps since the 70’s ...



    Regards ..
    It wasn't a Accuphase amp.
    Jim

    D'Agostino Momentum M-400's & HD Pre-amp
    Wilson Alexandria X2 Series 2 speakers
    Digital: dCS Vivaldi DAC, Clock & Upsampler
    Analog: SME 20/3 with Esoteric E-03 Phono
    Transparent Opus Speaker Cable & Interconnects & Opus Power Cords
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  11. #18
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    Re: Accuphase A-70 enough to drive Magnepan 20.7 or 30.7?

    So , what do you have choose as amplifier ?
    Marantz SA7S1/GRIMM AUDIO CC1/MARK LEVINSON 360S+TECHNICS SL1210 MKII/ORTOFON X1-MC/VPI CLASSIC 3 in rosewood/Audio-Technica ART-9/ESOTERIC E03+TAG MC LAREN T32R+JEFF ROWLAND CORUS+JEFF ROWLAND MODEL 625+INFINTY KAPPA 100+Cables line: all Furutech lineflux+power cord DIY

 

 
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