Peavey PVs 12 Sub Operating Manual page 21

Specifications
Frequency Response, 1 meter on-axis, swept-sine in half space
Environment (-6 dB):
53 Hz – 180 Hz
53 Hz – 90 Hz
Low Frequency range (-10 dB, half space):
48 Hz
Power Amp Rating:
1,000 watts peak available power
Sine wave Power: 500 watts into 4 ohms (Output duration is limiter controlled)
Electronic Input Impedance (Nominal):
Line In: 20 k ohms balanced (XLR or 1/4"), 10 k ohms unbalanced 1/4"
Maximum Sound Pressure Level (1 meter in half space):
122 dB SPL continuous
125 dB SPL peak
Transducer Complement:
12" premium heavy-duty woofer, 2.5" voice coil, 50 oz. magnet.
Box Tuning Frequency:
50 Hz
Input Connections:
One combo female XLR/ 1/4" phone jack providing balanced or unbalanced operation.
Electronic Input Impedance (Nominal):
Line In: 20 k ohms balanced (XLR or 1/4"), 10 k ohms unbalanced 1/4"
Output Connections:
Two High Pass Outputs.
One Full Range Thru.
Controls:
Level: Provides Off to + 20 dB gain adjustment
Crossover Frequency Adjust:
Adjusts electrical crossover frequency from 90 Hz to 180 Hz, in 15 discrete steps.
Bass Enhance:
Provides bass enhancement processing.
Polarity Switch:
Provides either Normal (0 degrees) or Reversed (180 degrees) sub woofer polarity.
Ground Lift Switch for input.
(Crossover Control Full CW)
(Crossover Control full CCW)