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Dorrough 40-A - Horizontal Rackmount Analog Loudness Meter

B&H# DO40A
Mfr#
40-A

Price: $ 451.95

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Buy Used: $299.00

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2-Year : $35.99

3-Year : $40.99

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Features
Specifications

Input Impedance: 20 kOhm balanced
10 kOhm single-ended, +/- 2%

Common Mode Rejection Ratio: 80 dB at 60 Hz
60 dB at 20 kHz (balanced mode)

Input Sensitivity: -10 dB for full-scale display

Maximum Input Level: +24 dB before clipping

Signal Path Bandwidth: 10 Hz - 25 kHz, +/- .25 dB

Signal Path Distortion: >1% THD at 1 kHz, +24 dB input

Sum Error: >0.1 dB at 1 kHz

Difference Error: >0.1 dB at 1 kHz

Display Resolution: 40 LEDs, 1 dB/LED

Step Size Error: +/- 0.25 dB

Absolute Error: +/- 0.25 dB (Full Scale -39 dBu)

Drift: +/- 0.25 dB

Average Time Constant: 600 mS, +/- 6%

Peak Acquisition Period: 10 uS, to full-scale, sine input 25kHz

Peak Attack Period: Virtually Instantaneous

Peak Decay Period: 180 mS, from full-scale to all LEDs off

Display Update Rate: Approximately 10 mS

Display Duty Cycle: Display Time, AVERAGE, PEAK HOLD - 75%
Display Time, PEAK - 100%

Power Supply Input Range: 117/237 VAC RMS, -20% to +10%, 50-60 Hz

Calibration Controls: None needed

User Controls: Left/Right input sensitivity
Option DIP Switch:
A) Peak Auto [ON]
B) Difference Mode [ON/OFF]
C) Over Level Alarm [ENABLE]
D) Under Level Alarm [ENABLE]
E) Auto ARMP

User Port: DB-9 Connector:
A) Alarm relay closure contacts,1 form C, 1A, 30V AC or DC
B) Mode control switch (user supplied)
C) PEAK function switch (user supplied)

Dimensions (WxDxH): 8.5 x 6.5 x 2.8" (215.9 x 165.1 x 71.1mm)

Weight: 2.3 lb (1.04 kg)

Monster Cable
Standard 100 Series XLR Cable - 10'
More Info

B&H# MOS100M10
MFR# 607227
Price: $ 16.95

Monster Cable
Perfomer 500 Series XLR Cable - 10'
More Info

B&H# MOP500M10
MFR# 600223
Price: $ 34.95

Dorrough
Single Rackmount f/Dorrough 40 Series Meter
More Info

B&H# DO40S
MFR# 40-S
Price: $ 44.95

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Dorrough
40-D - Dual Rackmount for 40 Series
More Info

B&H# DO40D
MFR# 40-D
Price: $ 45.00

Dorrough
Box f/2 Dorrough 40 Series Meters
More Info

B&H# DO40B2
MFR# 40-B2
Price: $ 113.95

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Dorrough
RW-100 - Remote Control for Dorrough Meters
More Info

B&H# DORW100
MFR# RW-100
Price: $ 239.95

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What's in the Box

Dorrough 40-A - Horizontal Rackmount Analog Loudness Meter

Owner's Manual

1 Year Warranty

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Dorrough 40-A - Horizontal Rackmount Analog Loudness Meter

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