https://www.stereophile.com/content/goldenear-brx-bookshelf-reference-x-loudspeaker-measurements

And he is going back to previous reviews and adding this in.

EPDR (Equivalent Peak Dissipation Resistance) takes the impedance and phase data and computes a new impedance that shows what equivalent load the amplifier will see. This takes the guesswork out of knowing how an amplifier will handle a given speaker if we have measurements of that amp into low impedance.

For example, in the BRX link above, here is the raw impedance & phase:

The raw impedance never goes past 3ohm. However, at 135Hz where the impedance is ~5ohm and the phase around -45°, the EPDR is 1.53ohm, over 3x lower.

This is something that I believe would greatly benefit Amir’s reviews, we just need to know the calculation.

For those providing EQ adjustments to speakers measured here, it would also be interesting to see how they effect the EDPR.

And he is going back to previous reviews and adding this in.

EPDR (Equivalent Peak Dissipation Resistance) takes the impedance and phase data and computes a new impedance that shows what equivalent load the amplifier will see. This takes the guesswork out of knowing how an amplifier will handle a given speaker if we have measurements of that amp into low impedance.

For example, in the BRX link above, here is the raw impedance & phase:

The raw impedance never goes past 3ohm. However, at 135Hz where the impedance is ~5ohm and the phase around -45°, the EPDR is 1.53ohm, over 3x lower.

This is something that I believe would greatly benefit Amir’s reviews, we just need to know the calculation.

For those providing EQ adjustments to speakers measured here, it would also be interesting to see how they effect the EDPR.

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