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The Dynaco Tube Audio Forum

Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Tubes4hifi VTA tube amp and preamp kits and all Dynakitparts.com products


3 posters

    Can my ST120 handle it ?

    DavidR
    DavidR
    DavidR


    Posts : 158
    Join date : 2017-08-10
    Location : MetroWest, MA
    • Post n°1

    Can my ST120 handle it ? Empty Can my ST120 handle it ?

    Post by DavidR Tue Feb 09, 2021 7:43 pm

    I have a pair of Acoustic Research AR9 and want to know if my ST-120 can handle the load.

    I have used my AR90s with this amp but they have (2) 10 inch woofers in parallel vs (2) 12 inch; everything else is the same.

    They are 4 ohm nominal speakers with a dip to 3.2 ohms. 50 watts minimum per channel.

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    corndog71
    corndog71
    corndog71


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    • Post n°2

    Can my ST120 handle it ? Empty Re: Can my ST120 handle it ?

    Post by corndog71 Tue Feb 09, 2021 11:09 pm

    The VTA120 has 4 ohm taps so the impedance may not be a problem but they are also 87 dB efficient.
    60 watts from the VTA120 should be enough unless you have a large room in which case you may be better off with a pair of VTA M125 amps.

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    DavidR
    DavidR
    DavidR


    Posts : 158
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    Location : MetroWest, MA
    • Post n°3

    Can my ST120 handle it ? Empty Re: Can my ST120 handle it ?

    Post by DavidR Wed Feb 10, 2021 12:41 am

    My ST-120 is already wired for 4 ohm as all my AR speakers are 4 ohm. I'm not worried about loud volumes just didn't want to stress the amp.
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    Bob Latino
    Bob Latino
    Bob Latino
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    Location : Massachusetts
    • Post n°4

    Can my ST120 handle it ? Empty Re: Can my ST120 handle it ?

    Post by Bob Latino Wed Feb 10, 2021 1:26 am

    DavidR wrote:My ST-120 is already wired for 4 ohm as all my AR speakers are 4 ohm. I'm not worried about loud volumes just didn't want to stress the amp.

    You can use your VTA ST-120 to drive your AR9 speakers .. Yes - the AR9's are not that efficient but as long as you are not using them in a very large room, the ST-120 will work just fine with your AR9's.

    Bob

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    • Post n°5

    Can my ST120 handle it ? Empty Re: Can my ST120 handle it ?

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