The Professional's Source
866.276.1435 / 212.502.6357
Holiday Closing
We are not accepting orders at this time. Online ordering will resume Monday, May 28th at 9:45PM EDT. Our SuperStore and offices are currently closed and will reopen on Tuesday, May 29th at 9:00AM EDT.
We apologize for any inconvenience and appreciate your patronage.
Dorrough 380-C - Professional Analog Loudness Meter +20dB - Vertical Display
- Price: $814.95
- GBP 520.32
- Calculate Shipping
-
Usually ships in 7-14 days
Availability Details
CloseThis 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.
International orders*
For international orders, credit cards will be charged at time you place your order.
The Dorrough 380-C Analog Loudness Meter +20dB offers a dual-channel horizontal linear display with 20dB headroom, and an external power supply. This model is designed for console mounting, rackmounting, or custom installations. It is built with XLR, DIP switch assignments, and mini DIN pin out. A wired remote control option is also available.
The 280 series is made for situations where many channels must be monitored in limited space, such as a mobile news van or crowded control room.
- Straight Line Display
- The 380 Series is functionally identical to the 40 series, except that the 380s have a straight-line scale designed for applications where a vertical display is preferred. These easy-to-read meters are made to install easily in a custom console or in a rack with optional rack mounts.
- Dual Channel Meter
- These meters are ideal for situations where many channels must be monitored in limited space, such as a mobile news van or crowded control room. The close side-by-side positioning of the two monitored channels facilitates critical comparisons.
- Peak and Average Metering
- The 380-C, like all Dorrough loudness meters, simultaneously displays peak and average, in this model on a straight-line scale display calibrated to +20dB. The relative difference, in dB, between Peak and Average ballistics is derived from the integration time of the persistence scale.
- Right and Left Inputs for Stereo Mixing
- With one instrument, the operator can easily see the stereo mix and avoid classic in-phase/out-of-phase problems as well as center channel buildup that causes a mix to seem louder. This is especially important in preparing stereo program material for broadcast, while still being able to maintain monaural compatibility.
| Input Impedance | 20k Ohm balanced, 10k Ohm 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 | Less than 1% THD at 1 kHz, +24 dB input |
| Sum Error | Less than 0.1 dB at 1 kHz |
| Difference Error | Less than 0.1 dB at 1 kHz |
| Display Resolution | 40 LEDs, 1 dB/LED except model 60D, +/- 0.25 dB. |
| Step Size Error | +/- 0.25 dB |
| Absolute Error | Full Scale -39 dBu: +/- 0.25 dB model |
| 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) | 1.5 x 7.0 x 5.0" (in.) (0.6 x 2.8 x 2.0cm) |
| Weight | Not Specified by Manufacturer |
Cables
- Price: $299.95
- GBP 191.51
Mounting
- Price: $79.95
- GBP 51.05
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
- Price: $3.77
- GBP 2.41
Cable Management
- Price: $4.95
- GBP 3.16
Engineer's Essentials
- Price: $14.49
- GBP 9.25
What's in the Box
- Power Adapter
- 2-Year Warranty
Why Shop at B&H
Make your online shopping trip personal with our online Live Chat representatives. You can easily reach an in-house expert while browsing our site for your shopping needs. We have the most highly-trained staff in the industry who are pros in their fields, and their professional expertise will help you get the most from your purchase.
Place your domestic order with us for shipment via any UPS, FedEx Economy, or FedEx Priority shipping methods by 4 PM ET Monday through Thursday or 11 AM ET Friday and your order will be shipped that day. Visit our Shipping Delivery Times page for further details. Delivery times are subject to payment verification.
We appreciate your purchase from us, and we understand that sometimes the products you buy don’t turn out to be the right choice for you. We guarantee your peace of mind with our 30-day return policy. With no standard restocking fee and few restrictions, you’ll enjoy a return process as easy as shopping with us. Please visit our Return Policy page for further details.
We’ve made iPhone and Android mobile apps available for your service and shopping convenience. Use filtered search to find and purchase almost any item we sell and ship worldwide. Download product manuals and guides for many popular items. See high-resolution product images in close-up detail. Manage wishlists and view order history. Visit our Mobile Apps page to download.
See sample Newsletter
Help
Company Information
B&H Resources
