Planar Speaker Asylum

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RE: It's not the watts, it's current....

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In Reply to: RE: It's not the watts, it's current.... posted by Rod M on August 06, 2020 at 09:08:36

You're not addressing Tre's point.

You said "it's not the watts......"
Yet, in your real-world example, you're clearly showing it IS the watts (de-rating.)

If power amplifier current capability de-rates at lower impedance loads then, by definition, so does the wattage capability.

Dave.

Follow Ups:

RE: It's not the watts, it's current.... - Rod M 17:39:37 08/06/20 (3)
Yes, and that was my point entirely. All 100 watt amps are not equal. Having to de-rate their amp points toward a lesser power supply that can't handle difficult loads.

-Rod
- RE: It's not the watts, it's current.... - Tre' 17:27:34 08/10/20 (2)
  "All 100 watt amps are not equal."
  
  You can say that again, and in many different ways.
  
  A lot of SS amplifiers have lower distortion at 2 watts vs. .2 watts. The problem with that is, with most speakers, we listen to .2 watts a lot more of the time vs. 2 watts.
  
  To your point, an amplifier that can not double it's output watts each time the load impedance is halved is showing a lack of current delivery ability.
  
  I would have said it like this, 'It's not the rated watts into 8 ohms that matters so much when we are talking about driving speakers that have an impedance curve that dips well below 8 ohms, it's the wattage rating of the amplifier when driving those lower impedances vs. the wattage rating into 8 ohms'
  
  That says what you were trying to say without making it sound like 'watts and current' can be separated.
  
  Tre'
  
  Have Fun and Enjoy the Music
  "Still Working the Problem"
  - Thanks Tre.... - Rod M 17:50:43 08/10/20 (1)
    I tend to over simplify.
    
    What would you call an amp that can double down to 2 ohms, a high current amp?
    
    -Rod
    - RE: Thanks Tre.... - Tre' 08:36:55 08/11/20 (0)
      An amplifier with a really good power supply and plenty of heat sink.
      
      Tre'
      Have Fun and Enjoy the Music
      "Still Working the Problem"

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