4 replies to this topic

[quadro]

I have bought Crown XLS 2000 and too disappointed!
Because it's real power is around 300W per channel (with 4 Oms per ch.)
I've measured it with oscillograph and tester.
Why the info on the official site differs from real?

Minimum Guaranteed Power
XLS 2000
Stereo, 4 ohms (per ch.)
650W
http://www.crownaudio.com/amp_htm/xls_drivecore.

Please explain my amp is broken or the information on the site is absolutely incorrect?
Many thanks for help!

[Kevin Heber]

Are you using a sine wave input?  What voltage and frequency is the input signal, and what input jack are you using?  Are you using a power resistor?  How are you measuring power?

We get challenged on power specs every now and then, and every time I do a quick check in our lab here, our specs are validated.

[quadro]

Are you using a sine wave input?  
Yes, we are using a sine wave input

What voltage and frequency is the input signal, and what input jack are you using?  
U=0.7V   F=1Khz

Are you using a power resistor?  
Yes, we are using a power resistor

How are you measuring power?
P=(U*U)/R

sticker on back side of amp is 350W, what is it mean? http://xmages.net/i/3139369
Thx.

[Stephane]

Are you using a sine wave input?  
Yes, we are using a sine wave input

What voltage and frequency is the input signal, and what input jack are you using?  
U=0.7V   F=1Khz

Are you using a power resistor?  
Yes, we are using a power resistor

How are you measuring power?
P=(U*U)/R

sticker on back side of amp is 350W, what is it mean? http://xmages.net/i/3139369
Thx.

In order to get full output first you need to show 1.4 volts to the input not .7 volts and this is a minimum (gain knob at 0) cheer.

[Mctwins]

HaHaHa

One have to measure correctly before make any statements

I believe that the sticker (350Watts) is how much it will consume from the AC outlet from the wall.

One question is how big is the power resistor?

Thanks