Doremi Cinema AUD-D2A

[Rafael Villavede]

hola compañeros tiene alguien el esquema para conectar la salida analógica del Doremi AUD-D2A a una mesa de sonido con dos altavoces.


gracias.

[Miguel Moreno]

No creo que encuentres específicamente el esquema que necesitas pero con el manual de instalación se puede revisar cuales son los canales de audio que necesitas.
puedo enviarte el manual por mail.

miguel moreno

[Marcel Birgelen]

Hi there Spanish speaking fellows... I think it would be great for all those over here, who aren't that well versed in Spanish to try to keep the conversation in English.

[Carsten Kurz]

Here are the wiring guides:

dcp2000_audiowiringguide.pdf

Odyssey_Analog_Audio_pinouts.pdf

[Ryan Gallagher]

Since it's not in the warehouse it seems, here is the D2A manual as well.

AUD-D2A v.1.4 manual
https://www.filmtechniek.nl/wp-conte...00181_v1_4.pdf

[Leo Enticknap]

From my reading of the original post, it looks like Rafael is trying to mix the 5.1 analog output of the AUD-D2A to 2.0. If so, it won't do that: you can take just channels 1 and 2 into the analog input of something else and leave the others disconnected, but if you're playing a 5.1 or 7.1 DCP soundtrack, you won't have any dialogue in the resulting audio. He would need to downmix the 5.1 or 7.1 first. At the drive-in I service we use Behringer X1832 mixers to do that. The six microphone channels are fed to the mixer from the DMA8+s that we use as DACs using a custom made DB25 to 6 x XLR breakout cable. This mixer works well for this task, because it comes with 19" rack ears for vertical rack mounting, has six balanced XLR input channels, those channels can be panned (thus enabling you to pan L, R, LSS, RSS, LRS, and RRS to where they need to be in the 2.0 mix, and apply C and LFE equally to both left and right), and there are some extra channels to play with for nonsync and alternative content sources.

But if you just take the first two AES channels coming out of your media block and dump the rest of the audio, your L/R stereo output will have no dialogue.

[Ioannis Syrogiannis]

All good, and (down-)mixing is indeed necessary. I still remember open-air cinemas (not drive-ins) in my home-country having the one and only speaker under the center of the screen, but that was film, at the time, and things were working otherwise.
If this was a poll, I would vote against adding the LFE channel to the stereo mix.

[Ryan Gallagher]

I almost said something to the same effect in my reply, but the use case felt a little too unknown.

But generally, do cinema audio processors enable a more reliable stereo downmix from 5.1/7.1 than a console? If yes I feel like a cheap used processor would be a no brainer, but again, slightly unknown use case, maybe those two speakers are in another room over the bar! Lol

[Harold Hallikainen]

The JSD-60 has a drive in mode that does a downmix. The mix is completely configurable.

[Fraser Falconer]

Harold is correct,
The JSD-60 Drive-in mode works really well with good results. FYI, the Main Fader is disabled on the Left/Right outputs, as it is designed to be driving a FM Transmitter.

Cheers Fraser

[Elia Orselli]

The JSD60 has a great audio matrix even without Drive-in mode. Unfortunately QSC withdrawn it from sales...

[Harold Hallikainen]

On fader bypass, there is a command you can do on RS232, TCP port 10001, or the GUI Diagnostics tab that lets you enable or disable fader bypass on a channel by channel basis. The command is:

jsd60.sys.fader_disable|n[cr]

where n is a bitmap corresponding to the output channels. If you just do

jsd60.sys.fader_disable[cr]

you can see the current setting. For typical operation, the value is 768 which is 0x300. This disables the fader on HI and VI. If you are in drive in mode, the 2 lsb are set giving 771 (0x303) disabling the fader on the first two output channels (0 and 1 or left and right).

So, if you want to do the drive in mix, but have the fader work on the first two output channels, select drive in mode, then send the commands:

jsd60.sys.fader_disable|768[cr]
jsd60.sys.save_config[cr]

OR, you can select the 7.1DS mode, then go to the Advanced tab and set the mixer coefficients as shown at http://ftp.uslinc.com/Products/JSD-6...06.pdf#page=53 .

You can see the entire system configuration as a set of tab delimited commands using a web browser and going to

https://IPaddress/ConfigFlash.html

Good luck!

[Leo Enticknap]

If this was a poll, I would vote against adding the LFE channel to the stereo mix.

If playing through L/R PA speakers, I'd be inclined to agree; but for reproduction through FM car radios, we tried it both with and without, and adding a bit of LFE made action scenes sound subjectively better to us. When we set them up, we adjusted the channel gains and crude (lo / mid / hi) EQs with me in the booth and the site manager listening in his car, to determine what gave the best effect. Obviously this isn't the way one would tune a conventional room, but a drive-in isn't exactly conventional, audio wise.