An ohm question...

Early B.
Early B. Posts: 7,900
edited June 2007 in Electronics
All things being equal on two separate systems, except the speakers on System A are 4 ohms and on System B those same speakers are 8 ohms. Since more power is being used to drive the 4 ohm speakers, will the 4 ohm speakers sound a bit differently, i.e., more impactful, dynamic, robust, etc.???

Thanks.
HT/2-channel Rig: Sony 50” LCD TV; Toshiba HD-A2 DVD player; Emotiva LMC-1 pre/pro; Rogue Audio M-120 monoblocks (modded); Placette RVC; Emotiva LPA-1 amp; Bada HD-22 tube CDP (modded); VMPS Tower II SE (fronts); DIY Clearwave Dynamic 4CC (center); Wharfedale Opus Tri-Surrounds (rear); and VMPS 215 sub

"God grooves with tubes."
Post edited by Early B. on
· Share on FacebookShare on Twitter

Comments

  • heiney9
    heiney9 Posts: 25,217
    edited June 2007
    How can the exact same speaker be rated at 4 and 8 oms? You'd have to change something in the speaker to make it 4 ohms therefore you've altered speaker set B so it may sound different. Not because the actual change in ohms but whatever you used to change it from 8 ohms to 4 ohms.

    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!
    · Share on FacebookShare on Twitter
  • Early B.
    Early B. Posts: 7,900
    edited June 2007
    heiney9 wrote: »
    How can the exact same speaker be rated at 4 and 8 oms? You'd have to change something in the speaker to make it 4 ohms therefore you've altered speaker set B so it may sound different. Not because the actual change in ohms but whatever you used to change it from 8 ohms to 4 ohms.

    H9

    Many drivers can be purchased in 4 ohm or 8 ohm versions. I dunno if crossover changes are needed, but my question is really about the power differences.
    HT/2-channel Rig: Sony 50” LCD TV; Toshiba HD-A2 DVD player; Emotiva LMC-1 pre/pro; Rogue Audio M-120 monoblocks (modded); Placette RVC; Emotiva LPA-1 amp; Bada HD-22 tube CDP (modded); VMPS Tower II SE (fronts); DIY Clearwave Dynamic 4CC (center); Wharfedale Opus Tri-Surrounds (rear); and VMPS 215 sub

    "God grooves with tubes."
    · Share on FacebookShare on Twitter
  • cmy330go
    cmy330go Posts: 2,341
    edited June 2007
    If exactly what you described could be achieved, you should only have a gain of 3db from the doubling of power from the amp.
    HT
    Mits WD-65737, DirecTV, Oppo DV-970HD, XBOX ONE, Yamaha RX-A1030, Parasound Halo A23, Rotel RB-985, Music Hall MMF-7, Parasound PPH-100, LSi-15, LSi-C, LSi-FX, LSi-7, PSW-1000, Monster HTS2600

    2 CH
    Parasound Halo P3, Parasound Halo A21, Sutherland Ph.D, VPI Classic 3 w/ 3D arm & Soundsmith Aida Cartridge, Arcam CD72T, B&W 802 S3, Monster HTS2500,
    · Share on FacebookShare on Twitter
  • cbl117
    cbl117 Posts: 285
    edited June 2007
    cmy330go wrote: »
    If exactly what you described could be achieved, you should only have a gain of 3db from the doubling of power from the amp.

    Both speakers have the same efficiency rating, so it would take the same amount of power to reach XdB/w/m. But speaker B would have an amp with twice the amount of power remaining. Is that why speaker B would have a gain of 3dB? I'm just looking for clarification.
    2 Channel

    Vandersteen 3a Sigs
    Music Reference RM-200
    Hovland HP-100
    VPI Scout w/ Benz Ace
    Rotel RCD-1072
    Cardas Golden Reference Speaker Cables
    Cardas Golden Reference Interconnects
    Cardas Golden Power Cords
    PS Audio UPC-200HB
    Black Diamond Racing Isolation
    · Share on FacebookShare on Twitter