INPUT
Input type Input connector Input impedence: With "phantom power" ON With "phantom power" OFF Input CMRR (50 Hz - 20 kHz) EIN @50 dB gain Input gain range Input adjustment range Maximum input level	Balanced differential transformerless 3-pin female XLR 13.6 kOhm 20 kOhm > 40 dB -127 dB typ (150 Ohm source) Nominally, +50 to -4 dB, selectable in four steps ± 10 dB from indicated input level selected +26 dB (15.5 Vrms)
OUTPUT
Output type Output connectors Line output impedance Line maximum output level Microphone output impedance Microphone output level Microphone output into 150 ohm Line output residual noise and hum Usable dynamic range Quiescent distortion @ unity gain	Servo-balanced transformerless line driver and resistive balanced attenuator microphone level output, 150 Ohm source Z 3-pin male XLR 100 Ohm balanced, 50 Ohm unbalanced +26 dBm (600) 150 Ohm ± 10% -50 dB ref. 0 vu -30 dB Maximum -80dB typical ref. .775 Greater than 100dB .02% typical THD (1 kHz) .05% typical SMPTE IMD
EFFECTS LOOP
Input type Input connector Input impedence Maximum input level Output type Output connector Output source impedance Maximum output level
Differential balanced (ground-sensing) op-amp ¼" tip/ring/sleeve jack 100 kOhm balanced, 50 kOhm unbalanced +26 dB (15 Vrms) Servo-balanced transformerless line driver ¼" tip/ring/sleeve jack 100 Ohm balanced, 50 Ohm unbalanced +26 dBm (600)
DYNAMIC RANGE PROCESSOR
Processor type Compressor attack time Compressor ratio Compressor release time Compressor threshhold Expander attack time Expander slope Expander release time De-esser sidechain breakpoint	Feedforward compressor with interactive expander and sidechain equalized de-esser 10 ms typical, program-dependent Nominally 4:1 20 dB/second typical, program-dependent Nominally, -10 vu Identical to compressor 2:3 @ 30 dB Range or less 1:2 at Range settings greater than 30 dB Tracks compressor release time Typically 2 kHz
EQUALIZER
Equalizer type Range of boost or cut Low bandpass fc Mid bandpass fc High bandpass fc	First-order variable boost and cut series bandpass sections with all-pass follower for reducing waveform asymmetry ±20 dB typical Nominally 140 kHzz Nominally 2.5 kHzz Nominally 5.0 kzz
ELECTRICAL
Mains input Mains connector Power consumption High voltage breakdown rating Phantom (parallel) microphone power supply output characteristics	115/230 Vac 50/60 Hz ±10% IEC appliance input connector per IEC 320 15VA maximum Transformer wound on VDE/IEC approved bobbin and certified @ 4 kv Nominally +48 Vdc @ 6 mAdc

MECHANICAL
The Model 500PH is housed in a steel and aluminum1.75" x 16.5" enclosure. A rack mounting kit is included for installation into standard 19" equipment racks.

NOTES
0 dB and 0 dB ref .775 Vrms refers to 0 Vu at 0.775 Volts rms
0 dBm referes to 0 Vu at a power level of 1 mW into 600 Ohm
Noise measurements are made using an rms-responding meter in a 20 kHz corrected noise bandwidth

Specifications are subject to change without notice

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