Dorrough 40-C - Horizontal Rackmount Analog Loudness Meter with "C" Scale Option
- Preço: $439.00
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Availabillty Details
FecharThis is a special order item and is non-cancelable and non-returnable. Est. arrival at B&H is 7-14 days (subject to availability). Your order will be charged at time of shipment.
The Dorrough 40-C is a professional analog loudness meter, designed for modern stereo recording and broadcast requirements, and offering simultaneous average and peak program display, with separate ballistics and lightning-fast response. This meter is equipped with a 40-LED bar graph, allowing for 20dB of headroom in 1dB steps of resolution per LED.
- Rack or console mounted Analog Loudness Meter with dual dedicated ballistics for simultaneous peak and average readout
- Microchip processor with accuracy of oscilloscope, ultra-fast response time of 600ms average, virtually instantaneous peak for seamless continuous display of peak/average relationship
- Individual left and right XLR inputs for stereo mixing applications, +4 dB factory-calibrated
- Display with 40 LED's providing 1dB resolution per LED
- Proprietary "C" scale with 20dB of headroom in 1dB steps, identical to AES/EBU digital standard
- XLR, 6 DIP switches for function assignments, mini 8-pin DIN port out for access to alarm relays, meter mode functions, and peak hold modes, standard with unit
| 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) |
| Peso | 2,3 libras (1,04kg) |
REVIEW SNAPSHOT®
by PowerReviews(based on 1 review)
Ratings Distribution
REVIEWS
Reviewed by 1 customer
Displaying review 1
Pros
- Fast and accurate
- Portable
- Stable
Cons
- No "through" connector
Best Uses
- Calibrate analog -20 dbfs
- Micline monitoring
- Professional Recording
Comments about Dorrough 40-C - Analog Loudness Meter w/C Scale:
Clean, accurate, functional, I don't know how I got by without it!
I have placed the Dorroughs 40C in my patch bay. This allows me to calibrate my analog equipment to -20 dbfs. and monitor my mic or line signal into the digital domain. The 40 C is fast and displays peak, average and compression simultaneously. The normal patch monitors my mixer main channel out to the DAW input, but I can patch it in to any point in the signal chain for calibrating levels or for real time monitoring. Since this meter doesn't have a "thru" signal, needed a unity gain distribution amp in order to patch it in properly.
Displaying review 1
Cables
- Preço: $339.95
Mounting
- Preço: $44.95
This is a special order item and is non-cancelable and non-returnable. Est. arrival at B&H is 7-14 days (subject to availability). Your order will be charged at time of shipment.
Adapters
- Preço: $3.77
Remote Controls
- Preço: $239.95
This is a special order item and is non-cancelable and non-returnable. Est. arrival at B&H is 7-14 days (subject to availability). Your order will be charged at time of shipment.
Cable Management
- Preço: $4.95
Engineer's Essentials
- Preço: $12.95
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