Reply to thread

Re: matching amp with speakers


ok guys . Here is my Amp specs. I am running a 4 ohm load in stereo. and i am looking at possibly getting new speakers. Will this setup be a Bad, good or perfect match for my amp? I will be running 2 speakers per side of my amp. from what i have been told, when you have 2 speakers on a 4ohm load then the output power on the amp is split 475 watts is going to one speaker and 475 going to the other.  so i am wanting to know if these speakers will be a good match for my amp or will i blow them? I hope i am making sense on this. The guy in the video got me to thinking about things when he said that when you power a 500 watt speaker with a 500 watt amp it is equal to a strainious fast run but when you power a 500 watt speaker with a 800watt amp then it will be like a slow paced walk. the speakers that i have now are rated at 400 (rms)-800 peak watts. and i am only putting 475 watts a speaker through them. from this amp. Will this blow anything?



I am running a Behringer EP4000


  • Output Power
  • 20Hz–20kHz @ 0.1% THD, both channels driven:
  • 8Ω per channel-550W
  • 4Ω per channel-950W
  • 2Ω per channel-1250W

  • RMS @ 1% THD (sine wave), bridged mode:
  • 8Ω-1750W
  • 4Ω-2400W

  • Peak Power, both channels driven:
  • 8Ω per channel-750W
  • 4Ω per channel-1400W
  • 2Ω per channel-2000W

  • Peak Power, bridged mode:
  • 8Ω-2800W
  • 4Ω-4000W



Speakers  (I am looking at getting these Mackie s515 speakers)



  • System
  • Frequency Range (–10 dB): 47 Hz – 18 kHz
  • Horizontal Coverage Angle: 90 ̊
  • Vertical Coverage Angle: 50 ̊
  • Sensitivity (1W @ 1m): 101.1 dB SPL
  • Nominal Impedance: 8 ohms
  • Power Handling: 300 watts continuous
  • 600 watts program 1200 watts peak
  • Crossover Frequency: 3400 Hz