|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
98.247.159.29
In Reply to: RE: First Watts and high output amps posted by fstein on April 16, 2014 at 13:26:15
I would suggest listening to how loud a 500 Hz tone is on your system at 1 Watt. (This can be done in a variety of ways, the easiest being to produce a 60 Hz tone, measure that with your meter to get the voltage, then calculate the output based on your amp's gain. Work it out until you have 1W at 60Hz, then up the frequency to 500Hz)
Very few users will need more than a watt or two with high efficiency speakers.
Follow Ups:
I did something similar a couple of days ago when I needed to ensure two amps were at the exact same level. I used Stereophile test disk #2 track 1 in my CD player to generate a 1kHz tone and set the volume control on the amps to a typical (loud) listening level on my Altec A7 speakers. I then measured the output from the amps to make them exactly the same using a DVM. I chose 100mV as the level as it was not only a nice round number but coincided with the volume level at which I normally listen (based upon the position of the volume control). So that's .1V squared / 16 = .000625W!
BTW: these were SE 2A3 amps putting out almost 3W.
It's very important to remember that most meters are made to measure 60Hz, and frequencies far away from 60Hz will yield inaccurate measurements.
The Fluke 175 manual asserts 2% accuracy to 1kHz.
Well, I dunno... I am using 110dB speakers with 150W mono amps, and the combination sounds quite good.
I didn't say it wouldn't sound good.
Your 110db speakers probably have 5 watts of power handling at frequencies below 50Hz. Just food for thought.
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: