Poweramp configuration advantages?

Discussion in 'Amps and Cabs [BG]' started by Truktek2, Oct 11, 2017.


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  1. Truktek2

    Truktek2

    Sep 5, 2008
    Queens, NY
    Hello all, I'm looking to hook up 2 8ohm 500 watt speakers to a 2 channel poweramp, and was just wondering which of these methods are most beneficial.
    1. Using channel 1 with both speakers daisy chained for 525w @ 4ohms

    2. Using both channel for 300watts @8 ohms each

    3. Using channel 1 bridged for 1550 watts @ 4 ohms.

    Thoughts and reasons? Thanks in advance
     
  2. bholder

    bholder Affable Sociopath Gold Supporting Member Supporting Member

    Sep 2, 2001
    Vestal, NY
    Received a gift from Sire* (see sig)
    Option 3 gets you the most headroom, thats what I'd go for. Unless I needed stereo for effects or something...
     
  3. seamonkey

    seamonkey

    Aug 6, 2004
    #2 in case you need to run a crossover between the two cabs for maximum fidelity.
     
  4. BassmanPaul

    BassmanPaul Inactive

    Option 1 - 525W maximum into your cabinets. 262W each.

    Option 2 - 600W maximum into your cabinets. 300W each.

    Option 3 - 1550W maximum into your cabinets. 775W each.

    I use a 2000W bridged into 4Ω power amplifier. I have never needed or wanted to run in bridge as it simply releases too much power for my liking. I use option 2 and have never needed more indoors or out.

    Using option 3 brings the very real possibility of destroying your speaker systems.
     
    Rich Fiscus likes this.
  5. agedhorse

    agedhorse Supporting Member Commercial User

    Feb 12, 2006
    Davis, CA (USA)
    Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
    What speakers are you talking about, do you know exactly how the rating is derived?
     
  6. Truktek2

    Truktek2

    Sep 5, 2008
    Queens, NY
    Thanks for all the info everyone. Hadn't thought about all those points. These are the cabs ing question, if it makes any difference.
    Ampeg: Portaflex Series - PF-115HE
     
  7. agedhorse

    agedhorse Supporting Member Commercial User

    Feb 12, 2006
    Davis, CA (USA)
    Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
    My recommendation would be one cabinet per channel, the gains from bridging are very small and the increased risk from an 'accident", or momentary lapse of good judgement is quite real IME.
     
    BassmanPaul likes this.
  8. BassmanPaul

    BassmanPaul Inactive

    You said it much more elegantly than I did! :D
     
    agedhorse likes this.
  9. DWBass

    DWBass The Funkfather

    I'm a huge proponent of option 2 AKA Parallel mode. I'm an anti-bridger! Headroom shredroom! Please stop using that word.
     
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