SDA 1C and Bridged Rotel Amps Question...

Bullet21
Bullet21 Posts: 69
edited February 2008 in Vintage Speakers
I'm pretty much a newbie here and have a question. I have a pair of Rotel 980bx amps driving Magnepan IIIa's and right next to them I have a pair of 1C's and I'd like to toggle between the 2 (really just unplug the wires from the maggies then into the polks) - would it be a matter of just connecting the negative terminal on the amps and I'd be good??

Also i would like to buy the RD0194-1's for the Polks - is that just a matter of calling polk customer service??

Thanks

Tim
Post edited by Bullet21 on
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Comments

  • heiney9
    heiney9 Posts: 25,204
    edited February 2008
    If the Rotels are run as mono bloc's then no you can't use them unless you have the option AI-1 inter connect cable. If the Rotels are normally stereo amps that can be switched to run mono then the likely hood of connecting the negative speaker terminals is low. Contact Rotel for further info concerning strapping the Rotels together.

    Simply call Polk Customer Service and ask for the RD0194-1 replacement tweeters and tell them you are a Club member. Last time I checked they were $104 a pr/shipped 2 day FedEx. You need 2 pr. so plan on $208 if the cost is the same as in the past.

    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 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
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  • ohskigod
    ohskigod Posts: 6,502
    edited February 2008
    plus the fact that I believe the 1C's are less than 8 ohms, might actually be 4 ohms, thus making running those amps at bridged mono dicey even without the significant negative ground issue.

    I would just go with a solid no across the board on it
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  • Marty913
    Marty913 Posts: 760
    edited February 2008
    ohskigod wrote: »
    plus the fact that I believe the 1C's are less than 8 ohms, might actually be 4 ohms, thus making running those amps at bridged mono dicey even without the significant negative ground issue.

    I would just go with a solid no across the board on it

    Correct. My 1C manual says "Greater than 4 Ohm" but mine measure right at 4 Ohm without a load. I would 2nd the no across the board.
    Sony 60'' SXRD 1080p
    Amp = Carver AV-705THX 5-Channel
    Processor = NAD T747
    Panasonic BD35 Blu-Ray
    Main = SDA-1C Studio with RD0s, spikes, XO rebuild, rings, I/C upgrade
    Center=Polk CS10, Surround = Athena Dipoles, Sub= Boston 12HO
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  • F1nut
    F1nut Posts: 50,734
    edited February 2008
    You can't strap the negative posts together on bridged amps and when bridged they are rated for 8 ohm nominal loads only, so as Lou stated, that would be a solid no across the board.
    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."

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  • Bullet21
    Bullet21 Posts: 69
    edited February 2008
    I guess I'll just have to look for a good stereo amd to drive them.... Maybe an old SAE 2400L from the day!!
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