A watt is a watt is a watt!!!!!!!!
11-20-2004, 10:21 AM
#22
Guest
Posts: n/a
Speakers... distortion?? Speakers suck...
As for max power measurement... Once I have clipped the waveform totally square, there isn't much more I can do...
As much as it isn't perfect, if you want to 'fairly' compare the power produced by amplifiers, you have two ways...
Look for amplifiers that carry the CEA-2006 standard on the information sheet.
Read test reports - Car Audio and Electronics, Mobile Entertainment and Performance Auto & Sound all use the same 1% distortion number and a stated supply voltage spec.
I suppose you can measure it yourself, but getting a scope, True RMS voltmeter, dummy loads and a monster power supply is expensive...
Say goodbye to Max power ratings...
As for max power measurement... Once I have clipped the waveform totally square, there isn't much more I can do...
As much as it isn't perfect, if you want to 'fairly' compare the power produced by amplifiers, you have two ways...
Look for amplifiers that carry the CEA-2006 standard on the information sheet.
Read test reports - Car Audio and Electronics, Mobile Entertainment and Performance Auto & Sound all use the same 1% distortion number and a stated supply voltage spec.
I suppose you can measure it yourself, but getting a scope, True RMS voltmeter, dummy loads and a monster power supply is expensive...
Say goodbye to Max power ratings...
11-20-2004, 11:25 AM
#23
2000 Watt CAFz'r
Join Date: Jan 2001
Posts: 2,026
Same topic, different field:
How are home systems measured? Do they give a true RMS? 100x5 rms
If it is RMS how the heck can the Denon AVR 5805 push 170x10?
Can't the average home 15A circuit only produce 1800W of power? Yet I have to beleive it, I can't imagine Denon rating something by its "peak" power.
How are home systems measured? Do they give a true RMS? 100x5 rms
If it is RMS how the heck can the Denon AVR 5805 push 170x10?
Can't the average home 15A circuit only produce 1800W of power? Yet I have to beleive it, I can't imagine Denon rating something by its "peak" power.
11-20-2004, 11:55 AM
#24
Originally posted by Dave_MacKinnon:
Once I have clipped the waveform totally square, there isn't much more I can do...
Once I have clipped the waveform totally square, there isn't much more I can do...
Plus.. if you are V clipping you may be able to put more juice into a smaller load.. and if you are current clipping you probably arn't hitting maximum rail voltages...
Its all in the load..
11-21-2004, 09:59 AM
#25
Guest
Posts: n/a
Originally posted by maltesechicken:
Same topic, different field:
How are home systems measured? Do they give a true RMS? 100x5 rms
If it is RMS how the heck can the Denon AVR 5805 push 170x10? Can't the average home 15A circuit only produce 1800W of power? Yet I have to beleive it, I can't imagine Denon rating something by its "peak" power.
Same topic, different field:
How are home systems measured? Do they give a true RMS? 100x5 rms
If it is RMS how the heck can the Denon AVR 5805 push 170x10?
Can't the average home 15A circuit only produce 1800W of power? Yet I have to beleive it, I can't imagine Denon rating something by its "peak" power.
This is why you pay $600+ for some 50x5 receivers and $249 for other 110x5 receivers. Which one you you think is full range, all channels driven power? [img]tongue.gif[/img]
11-21-2004, 05:10 PM
#26
Guest
Posts: n/a
Haunz, It's always voltage clipping when I am 'shooting for peak power'...
Once cylce, at full rail voltage typically only products about 1.4 times the RMS voltage (provided the amp is capable of supplying the current). So I still don't know how they fake those head unit numbers, other than to take the marketing department out for beer with the graphics department, just before they do the brochures...
Once cylce, at full rail voltage typically only products about 1.4 times the RMS voltage (provided the amp is capable of supplying the current). So I still don't know how they fake those head unit numbers, other than to take the marketing department out for beer with the graphics department, just before they do the brochures...
11-21-2004, 11:24 PM
#28
2000 Watt CAFz'r
Join Date: Jan 2001
Posts: 2,026
Originally posted by Dukk:
</font><blockquote>quote:</font><hr />Originally posted by maltesechicken:
Same topic, different field:
How are home systems measured? Do they give a true RMS? 100x5 rms
If it is RMS how the heck can the Denon AVR 5805 push 170x10? Can't the average home 15A circuit only produce 1800W of power? Yet I have to beleive it, I can't imagine Denon rating something by its "peak" power.
</font><blockquote>quote:</font><hr />Originally posted by maltesechicken:
Same topic, different field:
How are home systems measured? Do they give a true RMS? 100x5 rms
If it is RMS how the heck can the Denon AVR 5805 push 170x10?
Can't the average home 15A circuit only produce 1800W of power? Yet I have to beleive it, I can't imagine Denon rating something by its "peak" power.
This is why you pay $600+ for some 50x5 receivers and $249 for other 110x5 receivers. Which one you you think is full range, all channels driven power? [img]tongue.gif[/img] </font>[/QUOTE]Ok . . . which companies DON'T do this. If a quality receiver like Denon is doing this lame-O way rating, what systems do a True RMS all channels driven 20hz-20khz. Denon is one of those companies that you mentioned that you'll pay $500 + for 75 x 6
