Old Pioneer receivers and Polk SDA's

tshagg
tshagg Posts: 21
edited December 2008 in 2 Channel Audio
Hopefully someone out there can help me and tell me why my Pioneer SX1050 and SX1250 when hooked up to the sda's at half volume the speaker protection on the receiver kicks in. I have tried both receivers and 2 different pairs of sda's. I have a Pair of SDA 2's and SDA CRS+. Both have the same result. I have verified the receivers and they are both common ground.

Any suggestions?
I have taken the receivers into the shop and they say they are fine.
Post edited by tshagg on
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Comments

  • F1nut
    F1nut Posts: 50,561
    edited December 2008
    Simple, the receivers are clipping at that volume level.

    No offense to you sir, but my advice would be the sell them and get some real hifi gear.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • dkg999
    dkg999 Posts: 5,647
    edited December 2008
    If by "half-volume" you mean the volume knob is at half point on its rotation, then F1Nut nailed it. Great sounding receivers in their day, and still not half-bad (although I'm a vintage Marantz fan!), but not enough guts in the amp section for that type of use.
    DKG999
    HT System: LSi9, LSiCx2, LSiFX, LSi7, SVS 20-39 PC+, B&K 507.s2 AVR, B&K Ref 125.2, Tripplite LCR-2400, Cambridge 650BD, Signal Cable PC/SC, BJC IC, Samsung 55" LED

    Music System: Magnepan 1.6QR, SVS SB12+, ARC pre, Parasound HCA1500 vertically bi-amped, Jolida CDP, Pro-Ject RM5.1SE TT, Pro-Ject TubeBox SE phono pre, SBT, PS Audio DLIII DAC
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  • snow
    snow Posts: 4,337
    edited December 2008
    tshagg wrote: »
    Hopefully someone out there can help me and tell me why my Pioneer SX1050 and SX1250 when hooked up to the sda's at half volume the speaker protection on the receiver kicks in. I have tried both receivers and 2 different pairs of sda's. I have a Pair of SDA 2's and SDA CRS+. Both have the same result. I have verified the receivers and they are both common ground.

    Any suggestions?
    I have taken the receivers into the shop and they say they are fine.
    Im not 100% percent certain but there is a good chance that the polks you have are a 4 ohm nominal load and can and will dip down to 2 ohms often. If I remember correctly none of the SX-series receivers were rated for a 4 ohm load. Most likely even the SX-1980 which is rated at 300 wpc into 8 ohms wouldndt like it and chances are would go into protection. I have one and it's a great receiver but it's not made for the 4 ohm polks.



    REGARDS SNOW
    Well, I just pulled off the impossible by doing a double-blind comparison all by myself, purely by virtue of the fact that I completely and stupidly forgot what I did last. I guess that getting old does have its advantages after all :D
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  • tshagg
    tshagg Posts: 21
    edited December 2008
    What kind of gear would you reccomend? I had some carver 400's and they blew up 3 moths ago. I haven't got around to getting them fixed.
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  • snow
    snow Posts: 4,337
    edited December 2008
    tshagg wrote: »
    What kind of gear would you reccomend? I had some carver 400's and they blew up 3 moths ago. I haven't got around to getting them fixed.
    What type of budget do you have? It's hard to reccomend something without knowing what that is.



    REGARDS SNOW
    Well, I just pulled off the impossible by doing a double-blind comparison all by myself, purely by virtue of the fact that I completely and stupidly forgot what I did last. I guess that getting old does have its advantages after all :D
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  • dkg999
    dkg999 Posts: 5,647
    edited December 2008
    Maybe you are driving your equipment too hard based on your comments in this thread. Just a thought.
    DKG999
    HT System: LSi9, LSiCx2, LSiFX, LSi7, SVS 20-39 PC+, B&K 507.s2 AVR, B&K Ref 125.2, Tripplite LCR-2400, Cambridge 650BD, Signal Cable PC/SC, BJC IC, Samsung 55" LED

    Music System: Magnepan 1.6QR, SVS SB12+, ARC pre, Parasound HCA1500 vertically bi-amped, Jolida CDP, Pro-Ject RM5.1SE TT, Pro-Ject TubeBox SE phono pre, SBT, PS Audio DLIII DAC
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  • tshagg
    tshagg Posts: 21
    edited December 2008
    I would like to keep it under 5k.
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  • snow
    snow Posts: 4,337
    edited December 2008
    tshagg wrote: »
    I would like to keep it under 5k.
    Well that shouldndt be hard to do. I suggest you try a Sunfire amp 300 X 2 or a Signature 600 X 2 amp they will both drive any polk speaker ever made easily.



    REGARDS SNOW
    Well, I just pulled off the impossible by doing a double-blind comparison all by myself, purely by virtue of the fact that I completely and stupidly forgot what I did last. I guess that getting old does have its advantages after all :D
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  • F1nut
    F1nut Posts: 50,561
    edited December 2008
    For $5k you can take your pick of some very nice amps.

    Take a look, www.audiogon.com
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • Face
    Face Posts: 14,340
    edited December 2008
    Here you go, you could take this one to the grave with you.

    http://www.audiogon.com/cgi-bin/cls.pl?ampstran&1233793962&/McIntosh-MC-402-Like-New

    1228703078.jpg
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
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