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ARE wrote:What's the general relationship between amp gain and amp power? If gain is the ratio between input signal and output signal, how does power come into play?
Thus then is it correct to say that since the output signal being conveyed by the signal source is "fixed" the matter of the amplifier's gain is is dictatated by it's potentiometer which in turn is transmitted by the amps output into the speakers?
Or would the impedance load determine the power the amp has to juice out or both?
ARE wrote:What's the general relationship between amp gain and amp power? If gain is the ratio between input signal and output signal, how does power come into play?
av_phile wrote: ......... If i recall right, a gain of 15 from an input of 1v to an output of 15v is about the same as a 12db power gain.
ARE wrote:gain would be an amplifier's inherent characteristics,
while power would always be dependent on the associated equipment (or within a specific working limit). Is it safe to say that?
ARE wrote:From a layman's perspective,
gain (positive) correlates to 'amplify' which relates to volume increase.
ARE wrote:it gets confusing that an approximate 3 db increase results from doubling the power, specially say between two amps, (1) 100W and (1) 200W but both with the same gain.
johnmarc0 wrote:ARE wrote:it gets confusing that an approximate 3 db increase results from doubling the power, specially say between two amps, (1) 100W and (1) 200W but both with the same gain.
lets do a short math exercise dBw is dB gain over 1 watt reference hence...
10 log 100W/1W = 20dBw
also for the 200W amp
10 log 200W/1W = 23dBw
200W=23dBw
100W=20dBw
difference=3dB
Now we can truly say that the 200W amp offers relative power equivalent to 3dB over the 100W amp.
av_phile wrote:There is another aspect of stereo amplifier power or perceived loudness that had me baffled in the past. On some receivers and integrateds, it seems the volume control at the 10 o'clock position yield so much more loudness than the same volume position in a preamp + power amp combination of the same power, both conservatively rated and using the same player and source. I have some idea behind this, but would be interested about your thoughts.
mickey wrote:Another parameter worth taking a look at in amps is the input sensitivity, which is the input signal level that will drive the amp to clipping or in another way of putting this max out your amp. the lower the value of this then the higher the gain of your amp. intergrated amps have very low input sensitivity (below 0.3 V ) so they can be connected directly to CD players with output voltages of .5V up
RU9 wrote:mickey wrote:Another parameter worth taking a look at in amps is the input sensitivity, which is the input signal level that will drive the amp to clipping or in another way of putting this max out your amp. the lower the value of this then the higher the gain of your amp. intergrated amps have very low input sensitivity (below 0.3 V ) so they can be connected directly to CD players with output voltages of .5V up
Hi Mickey,
I have these two set-up, care to explain the difference in loudness?
Set-up 1
CD Player-->TONO Preamp(vol 12:00)-->40 watt INTEGRATED amp (vol 12:00)
Sound is LOUD but listenable.
Set-up 2
CD Player-->TONO Preamp(vol 9:30)-->70 watt POWER amp
Sound is VERY LOUD (ear-piercing), is this normal for the TONO preamp?
Thanks.
Louie
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