The following measurements are made with the inspiration taken from Mr. Siegfried Linkwitz's distortion measurement methodology which is described in great detail at his website www.linkwitzlab.com.

Peerless 850122 is measured in a 15lt sealed box with a front baffle was 18"x14"; woofer centered on the baffle.

Scan-Speak 8545, Usher 8848P and Usher 8945A are all measured in a 19lt ported box tuned to 39Hz. Front baffle was 17"x10", woofer center was at 5" distance from side and 6" from bottom.

Vifa MG13SG0908 is measured in a 5lt sealed box with a variovent on the back. Front baffle was 9.5" x 6.25" and woofer center distanced 3.5" from bottom and centered horizantally on the baffle.

4.3 V(peak) Non-linear Distortion Measurements:

8.45 V(peak) Non-linear Distortion Measurements:

Linear Distortion Measurements: