Extension cord for my Crown XLS 2502 amp.

[highfigh]

Thanks TLS Guy! I will go with a 10ga. What does SJTW mean?

Search and ye shall find.

SJTW Cable: What does it mean and how is it used? - Tevelec

If you're trying to learn more about the SJTW cable, you might find it fascinating that the cable has a number of different applications.

www.tevelec.com

 

[lovinthehd]

I found that too but it's not for the XLS2502. Perhaps an indicator but not real data for this machine.

The amp part of the 2500 and 2502 are the same.

 

[Speedskater]

I'm pretty sure that the Crown has a Switch Mode Power Supply. So it doesn't care about AC line cord voltage drop.
It can output full power with a wide range of AC line voltage.

 

[everettT]

I'm pretty sure that the Crown has a Switch Mode Power Supply. So it doesn't care about AC line cord voltage drop.
It can output full power with a wide range of AC line voltage.

All of my recent crown amps from the xls series do with the voltage range and at what HZ clearly listed on the unit.

 

[highfigh]

Remember that cords and breakers are rated for 3 hours of continuous (rated) current.
So unless it's playing full volume test tones the cords and breakers are just loafing along.

But the level of music isn't consistent, so that really doesn't apply. Good to be safe, but there's plenty of margin with a 10ga or 12ga cord.

 

[highfigh]

I'm pretty sure that the Crown has a Switch Mode Power Supply. So it doesn't care about AC line cord voltage drop.
It can output full power with a wide range of AC line voltage.

EVERYTHING cares about voltage drop- it's just a matter of how tolerant the design is.

Crown tech support said the current draw is 7A with 2 Ohm load, 1/8 power nominal output. The equipment (these models) sold in the US are made for 120VAC line voltage, this will not be happy with excessively high or low voltage. Their amplifier sales are region-specific WRT line voltage- they're available for 100VAC, 120VAC (US), 240VAC and the 120V version will not be happy with 100VAC or power systems providing voltage higher than 120VAC.

 

[Trell]

EVERYTHING cares about voltage drop- it's just a matter of how tolerant the design is.

Crown tech support said the current draw is 7A with 2 Ohm load, 1/8 power nominal output. The equipment (these models) sold in the US are made for 120VAC line voltage, this will not be happy with excessively high or low voltage. Their amplifier sales are region-specific WRT line voltage- they're available for 100VAC, 120VAC (US), 240VAC and the 120V version will not be happy with 100VAC or power systems providing voltage higher than 120VAC.

Perhaps they should switch to a non-regional power supply?

 

[Speedskater]

But the level of music isn't consistent, so that really doesn't apply. Good to be safe, but there's plenty of margin with a 10ga or 12ga cord.

It's a series circuit, all the way back to that big power company transformer down the street. A small change in a 6 foot length of that many hundred foot cable, won't have any impact on the circuit's source impedance.
* * * * * * * * *
By a wide range of AC line voltages, that would be between 110 and 130 Volts.

 

[highfigh]

It's a series circuit, all the way back to that big power company transformer down the street. A small change in a 6 foot length of that many hundred foot cable, won't have any impact on the circuit's source impedance.
* * * * * * * * *
By a wide range of AC line voltages, that would be between 110 and 130 Volts.

That range is just within the requirement for power companies (120VAC ±10%)- you could have posted that before. Even a non-SMPS will work well within that range- designers account for the 10% deviation. When I called Crown, I specifically asked about the 10% range and he said it would be fine, but at 100VAC, it wouldn't be happy.

Personally, I would probably go up a gauge, just to be safe- not expecting it to sound better, but the contact area in an outlet is very small.