4 replies to this topic

[Shieldsy]

ok many maany people are saying you have to be carefull of this and that variable and this can blur that and so on and so on... now wat i am sugesting is that we list all the main variables and ways to combat them... obviously you need some constants like your speakers head unit and xover settings.. so i would say use an seperate xover unit and set the amps to full range with no added features on... one problem i see is setting the gains... how would you overcome this? would playing a tone thru the fronts and setting your volume on the head unit as a constant and adjusting the gains so each amp was hitting the same number (you would use amps with the same power output to deal with problems like head room and the sort) so you would allso need a very accurate meter.
would this work or am i just losing my mind? wat other variables are there that could hinder a test on amps and how could you combat these problems that the variable creates

[STIK79]

You can accurately set gains using an oscilliscope

Other variables are power supply - need a power supply that doesn't drop voltage over time - ie a 240V->13.8 power supply

otherwise yeah - external crossover used (or even better run full range...)

[STIK79]

Quote

Originally posted by STIK79:
You can accurately set gains using an oscilliscope

Other variables are power supply - need a power supply that doesn't drop voltage over time - ie a 240V->13.8 power supply

otherwise yeah - external crossover used (or even better run full range...)

and bypass all filtering onboard the amp - ie LPF/HPF bass boost yada etc...

[edit]oops pressed quote button [/edit]

[ October 31, 2003, 16:25: Message edited by: STIK79 ]

[mick007]

If you took eveything away from an amp, eg x-overs in particular arn't you putting that amp a a disadvantage to others that don't have x-overs as good?
Or maybe the test should read amplifier shootout INCLUDING x-overs, bass boost etc, etc. That way you are testing the amp as it sits, not breaking it down to it's raw components.
Mick

[con]

this site lists the variables

http://sound.westhost.com/amp-sound.htm