8 Ohm load

MusicinOzMusicinOz Posts: 2
edited March 13 in 2 Channel Audio
With jumpers removed from RTi-A9 speakers, do both binding posts present a nominal 8 ohm load? Saw an earlier thread and imo opinion no clear answer was given. This is yes or no. Not looking to get flamed for this question. I will be using 2 Luxman M-120A in BTL for 300 watts on the woofer section and a Luxman M-02 in stereo for 150 watts to the mid/tweeter. Thanks.

Comments

  • F1nutF1nut Posts: 42,133
    Maybe
    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."


  • MusicinOzMusicinOz Posts: 2
    F1nut wrote: »
    Maybe

    Thanks for the input F1nut.
  • mhardy6647mhardy6647 Posts: 22,085
    edited March 13
    Did Stereophile ever review these loudspeakers? If so, there should be about as accurate & meaningful of an impedance curve in the quantitative measurements section of the review as you'll ever find anyplace (including from the manufacturer) for this particular model.

    Impedance of any loudpeaker using "normal" (cone or dome) dynamic drivers and passive crossovers will never be well represented by a single number. Not no way, not no how (to quote the guard, IIRC, in The Wizard of Oz).

    So -- "maybe" may be even overstating things a bit!

    :#
  • F1nutF1nut Posts: 42,133
    Thanks for the input F1nut.

    You're welcome. It was the correct answer.
    MusicinOz wrote: »
    With jumpers removed from RTi-A9 speakers, do both binding posts present a nominal 8 ohm load? Saw an earlier thread and imo opinion no clear answer was given. This is yes or no. Not looking to get flamed for this question. I will be using 2 Luxman M-120A in BTL for 300 watts on the woofer section and a Luxman M-02 in stereo for 150 watts to the mid/tweeter. Thanks.

    What you really need to concern yourself with is having a way to match the gain of the different amplifiers.

    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."


  • EmlynEmlyn Posts: 2,374
    I suppose the question is because the M120a would be run bridged to mono and therefore be unstable into lower than 8 ohm loads?

    If so, I’d try a different arrangement anyway because I don’t like the drawbacks of running amps that way.
    1. Polk LSiM707, 704C, 703; Dual SVS SB2000 subwoofers; Marantz SR7011 receiver; Parasound A23 amp; Oppo 205; Toshiba HD-DVD Player; Sony 65" 4K TV; FIOS; PS Audio Power Plant Premier; MIT S2 cables
    2. JM Labs Electra 920.1; Parasound JC2 Preamp; Sonic Frontiers Power 2 amp; Sony HAP-Z1ES; Oppo 105D; Music Hall MMF7 and Acoustech phono pre; PS Audio P1000; MIT S1 Cables
    3. Polk LSiM703; Pioneer Elite SC97 receiver; Oppo 203; Squeezebox Touch; MIT S3 cables
  • joecoulsonjoecoulson Posts: 3,232
    Just went through this. Most likely they are not and you would have to do your best at gain matching the highs and lows. Not easy
    Better off getting the power you want out of a mono block per tower.
    Auralic Vega G1/Rega TT/Denon SACD - PS Audio SGC - PS Audio M700x2 - Elac Adante AF-61
  • jdjohnjdjohn Posts: 854
    joecoulson wrote: »
    Just went through this. Most likely they are not and you would have to do your best at gain matching the highs and lows. Not easy
    Better off getting the power you want out of a mono block per tower.
    But where to find a pair??? :D
    "Sometimes I do what I want to do. The rest of the time, I do what I have to." - Cicero, in Gladiator

    Regarding collectibles: "It's not who gets it. It's who gets stuck with it." - Jimmy Fallon
  • joecoulsonjoecoulson Posts: 3,232
    lol!
    Believe it or not that did not cross my mind until you mentioned it, although it seemed that I had an ulterior motive
    Auralic Vega G1/Rega TT/Denon SACD - PS Audio SGC - PS Audio M700x2 - Elac Adante AF-61
  • delkaldelkal Posts: 551
    I would think both posts should be nominal 8 oms (but if you blow something who am I and why are you taking my free advice).

    If this speaker was wired for one input they wouldn't design it so the tweeters was at one ohm and the woofers at 16. That does not average to 8. The lower resistance circuit would get most of the power and fry itself.

    For a reality check test the resistance at both posts with a multimeter. It won't read 8 ohms (that is inductance when playing) but it should read around 6 ohms.
Sign In or Register to comment.

Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!