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Dorrough Analog Loudness Meter +43db

Product Code: ga228411
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$2,707.50 $4,034.18

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The Dorrough 12-AE Analog Loudness Meter +43dB is a dual-monitor, single-channel version of Dorrough's standard 40-CE loudness meter. The display scale allows for 43dB of headroom in 1dB steps. The headroom scale is identical to the AES/EBU Digital Standard. This meter provides access phase correlation, peak hold, sum/diff, and reference mode allowing 0 reference setting to .1dB accuracy, directly or with the optional remote control. Rack mounting is required.

Parameters
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	Less than 0.1 dB at 1 kHz
Step Size Error	+/- 0.25 dB
Absolute Error	Full Scale -39 dBu: +/- 0.25 dB model A,B,C
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 (models A, B, C)
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	8.6 x 3.0 x 2.0" (in) (3.4 x 1.2 x 0.8cm)
Weight	Not Specified by Manufacturer
Packaging Info
Package Weight	1.6 lb
Box Dimensions (LxWxH)	8.8 x 3.3 x 3"

Dorrough Loudness Meters display actual energy content of the program material, regardless of frequency, while still indicating the peak amplitude of the complex audio signal. This feature allows all program material to be adjusted for equal perceived loudness while protecting the peak of the waveform.

With these easy to read monitors you can view two channels or projects simultaneously, side-by-side. They are made to install easily to a custom console or with optional rack mounts. Dorrough rack adapters for the model 12 series are available with cutouts for either single or double meters. Both are 2RU high and 19" wide.

The 12-AE, like all Dorrough loudness meters, simultaneously displays peak and average, in this model up to +43dB. The relative difference, in dB, between these two 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 can cause 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. Will a single 2L76 battery (1/3N) work with this meter?

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

Q: 2. Can the kfm-2200 meter directly to a Canon d7 or a markii?

A: No. It has no WiFi or NFC functions.

Q: 3. Will this work on a Rollei 35S? Granted the shoe mount is on the bottom.

A: Yes, the Voigtlander VC Speed Meter II (Silver) is compatible with a Rollei 35S.

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. Will this also work in the accessory shoe of a Pentax K1000? Any concerns of the flash voltage coming from the shoe?

A: Yes. The Voigtlander VC Speed Meter II can be used on the Pentax K1000 and there is no risk of the voltage between the camera and the meter.

Q: 6. Main ViewDoes Sekonic LiteMaster Pro L-478D-U Light Meter gonna work if not to connect it to the camera or to the flash? I am using youngnuo 685 with 622 tx trigger. Is it necessarily to connect it to flasher or it can be used without connection?

A: Then i can go with lower price metere like 308 to perform the same operation, if i am not using it with pocket wizards. Or there is a big difference between those two models?

Q: 7. 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: 8. What is the lowest ISO rating this can measure?

A: The lowest ISO the Keks KM02 OLED Light Meter can measure is six.

Q: 9. What is the ISO range of the meter? Does it meter at 64 for instance?

A: The Voigtlander VC Speed Meter II (Black) ISO range is 25-3200 and it can be set to ISO 6400.

Q: 10. Can it trigger a Pocket Wizard?

A: Yes, using a Pocket Wizard transmitter, it will trigger a Pocket Wizard receiver.

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