New Sub – Measuring the PVR 18″

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Next up for testing is the PVR Audio 18SW2000 in a 3 cu.ft. (net) enclosure.

2015-10-03 13.43.02

First up is the frequency response measurement.  Performed with the mic close-up, using pink noise averaged 1000 times.  Red curve is the Velodyne for reference.

PVR Response4

The Velodyne subs have a built-in amplifier.  To match up with the PVR I carefully recorded the gain settings on the microphone.  I dialed in the PVR at +6 dB higher than the Velodyne to account for the fact I have two of the Velodynes and I am looking for a net improvement over the pair.

THD test results – not an improvement !

  • 35 Hz, 17″, 2.83 vRMS = 1.6 watts into 5 ohms –> 4.5%
  • 35 Hz, 39″, 5.92 vRMS = 7.0 watts into 5 ohms –> 7.4%
  • 35 Hz, 79″, 12.93 vRMS = 33.4 watts into 5 ohms –> 16.6%
  • 67 Hz, 17″ –> 2.0%
  • 67 Hz, 39″ –> 2.0%
  • 67 Hz, 79″ –> 3.9%