Impedance sweep of 2 M-130x in parallel - Tough load, but my 1000ASP powered amps shouldn't have a problem with it. The slight wiggle at 1900hz shows on the M-130 and M-165x drivers as well and corresponds with FR and distortion irregularities on all drivers. Danny at GR Research should look into that issue more. High Fs shown in this sweep due to being loaded in a .3cu/ft sealed cabinet.

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