Amplifier Temperatures

MillerLiteScott
MillerLiteScott Posts: 2,564
edited October 2007 in Electronics
My amp runs @ 20 degrees cooler running my RTA 11t's than my SDA 2B's.

RTA 11t's @ 90 F
SDA 2B's @ 110 F

I thought that was pretty significant.

Scott
I like speakers that are bigger than a small refrigerator but smaller than a big refrigerator:D
Post edited by MillerLiteScott on
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Comments

  • danger boy
    danger boy Posts: 15,722
    edited September 2007
    that is a big difference.. i just found out this integrated amp i just got also runs pretty hot running SDA 2B's. do you know are they 4 or 6ohm speakers?
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  • MillerLiteScott
    MillerLiteScott Posts: 2,564
    edited September 2007
    I thought that 2B's were 8 ohm compatible. I could be wrong and such as.
    I like speakers that are bigger than a small refrigerator but smaller than a big refrigerator:D
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  • cfrizz
    cfrizz Posts: 13,415
    edited September 2007
    Those SDA's obviously require a lot more power! COOL.
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  • strider
    strider Posts: 2,568
    edited September 2007
    MillerLiteScott wrote: »
    I thought that 2B's were 8 ohm compatible. I could be wrong and such as.

    IIRC, they are labelled as 8 ohm compatible, but are 6 ohm nominally.
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  • Willow
    Willow Posts: 11,127
    edited September 2007
    I'll test the temp on my monos and my AVR
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  • heiney9
    heiney9 Posts: 25,264
    edited September 2007
    I think it has to do with the SDA cable. With my SDA 1C's my amp is warmer at idle than when I had my LSi 9's and runs about as hot as when I play them above a normal listening level. The SDA cable puts a bit more strain on the negative side of the amplifier. Nothing to worry about if you have a nice robust amplifier, if not then time will tell. It's not *always* about nominal impedence rating.

    H9
    "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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  • Systems
    Systems Posts: 14,873
    edited September 2007
    I've had my Outlaw monoblocks funning at full blast for an hour and the things barely feel warmer then room temp! On the flip side, my Onkyo 805 using full preouts will be so hot that I cant even leave my hand on it.
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  • heiney9
    heiney9 Posts: 25,264
    edited September 2007
    Silverti wrote: »
    I've had my Outlaw monoblocks funning at full blast for an hour and the things barely feel warmer then room temp! On the flip side, my Onkyo 805 using full preouts will be so hot that I cant even leave my hand on it.

    The Outlaw mono's are class H amps so if they get hot you have a problem ;).
    "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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  • F1nut
    F1nut Posts: 51,142
    edited September 2007
    Hilarious!
    Political Correctness'.........defined

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  • MillerLiteScott
    MillerLiteScott Posts: 2,564
    edited October 2007
    MillerLiteScott wrote: »
    My amp runs @ 20 degrees cooler running my RTA 11t's than my SDA 2B's.

    RTA 11t's @ 90 F
    SDA 2B's @ 110 F

    I thought that was pretty significant.

    Scott

    My amp powering Monitor 5's under the same conditions runs @ 82 F
    I like speakers that are bigger than a small refrigerator but smaller than a big refrigerator:D
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  • ViperZ
    ViperZ Posts: 2,046
    edited October 2007
    Really depends on the class of your amp and on technology used in the amp, as someone mentioned.

    i.e. My MOSFET-based Adcom is Class A at low power, and class AB at higher power. If I let it idle, it does get very warm (class A).

    On the other hand my BJT-based HK amp (not sure of class of amplifier) always runs stone cold (the heatsinks on main transistors are cool).
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