The Dorrough 380-AE Vertical Loudness Meter +43dB is a professional analog loudness meter, with a dual-channel vertical linear display 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.

The unit shows simultaneous average and peak program information, with separate ballistics and lightning-fast response. It is equipped with a 40-LED bar graph with 43dB headroom displayed in 1dB steps. It is outfitted with XLR, DIP switch assignments, and mini DIN pin out, standard on most Dorrough units.

The 380 Series is functionally identical to the 40 series, except that the 380s have a straight-line scale designed for applications with limited vertical space. These easy-to-read meters are made to install easily in a custom console or in a rack with optional rack mounts.

These meters are ideal for situations where many channels must be monitored in a 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.

The 380AE, like all Dorrough loudness meters, simultaneously displays peak and average, in this model on an extended straight-line scale display calibrated to +43dB. The relative difference, in dB, between Peak and Average ballistics is derived from the integration time of the persistence scale.

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.

Related Questions and Answers

Q: 1. Can the f stop be changed to t? Thank you.

A: Light meters like the Keks KM02 OLED Light Meter will only list the aperture in F stops.

Q: 2. When used with the Leica IIIf, does it block access to the shutter selection control?

A: The Voigtlander VC Speed Meter II is compatible with the IIIf and will not block the controls.

Q: 3. Will a single 2L76 battery (1/3N) work with this meter?

A: The Voigtlander VC Speed Meter II uses two LR44/SR44 batteries.

Q: 4. I just purchased this meter. So far so good, but it didn't come with the flat disk which I find so handy to evaluate contrast ratios. Its an accessory! And not available on B&H webstore. How can I order one? Thank you in advance for your answers.

A: The Kenko KFM200 Flat Diffuser for the KFM-1100 and 2100 Light Meters B&H # KEKFM200 would be compatible with your meter. https://bhpho.to/2L55LeQ

Q: 5. Does it come witg batteries?

A: It comes with 2 x LR44 Batteries.

Q: 6. Minimum iso that i can measure with this?

A: The following unit has a iso range of 3-409600

Q: 7. I keep reading issues about the touchscreen and the boot time - would these drawbacks prevent you from buying this again or does its functionality overcome its flaws?

A: Typically there aren't any issues with this meter.

Q: 8. does this meter trigger Yungnuo YN-E3-RT remotely?

A: No; the L-478D-U does not have any internal radio. There are other L-478 meters that do, but they are specifically for PocketWizard, Elinchrom or Phottix receivers.

Q: 9. A spotmeter (reflected) workflow question based on speed and ease-of-use: does pushing the S/A/H button immediately give you a calculated reading, S or A or H, depending on what you had last requested (S or A or H) before taking new readings, without needing to use the Up/Down Dial? And so the Up/Down Dial is ONLY necessary when changing from A to S or A to H or S to H, etc.(?) So if you always want, let’s say, Shadow calculations, the function can be left at S and pushing the S/A/H button will always IMMEDIATELY give one the Shadow calculation without ever touching the Up/Down Dial.(?) Thanks.

A: I contacted the manufacturer concerning your inquiry. According to Kenko, yes, the workflow you describe above would work with the Kenko KFM-2200 Cine & Flash Meter.

Q: 10. When batteries get low does that affect exposure? Is there a warning

A: When the battery gets low, the readings may be inaccurate.