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Re: ICEpower500ASP Current Specifications

Posted by DevillEars (A) on April 29, 2007 at 07:22:21

In Reply to: Re: Rowland 201 vs 501 for MBL-121 posted by beppe61 on April 29, 2007 at 04:14:17:

Hi Beppe,

The source of the specifications was B&O's ICEpower website and a downloaded product datasheet for this module.

I mistakenly added the word "continuous" - this is incorrect usage, as the 35 amp figure is, in fact, quoted as "Maximum current draw from amplifier output" and is, more than likely, the threshold setting for the on-board "Over-Current Protection" circuit.

Based on the Power @ Impedance values quoted of

a) 500 watts into 4 ohms: Current drawn = ~11 amps at ~45 volts
b) 250 watts into 8 ohms: Current drawn = ~06 amps at ~45 volts

By extrapolation (no figures quoted in datasheet) values for lower impedance loads would look like this:

c) 1000 watts into 2 ohms: Current drawn = ~22 amps at ~45 volts
d) 2000 watts into 1 ohms: Current drawn = ~45 amps at ~45 volts

The datasheet does quote the acceptable speaker impedance load range as being between 2 ohms and 8 ohms, but no figure is provided for rated power output into 2 ohms.

Given a maximum current level of 35 amps, any load less than 2 ohms is likely to pose a few problems.

BTW, I did include a link to the ICEpower website if you wish to dig any deeper.

Have fun ...

DevillEars

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