Tascam DX-4D to 32-2B

[techno_62]

Hi, any one no how to connect a Tascam DX-4D DBX unit to a Tascam 32-2B.
The pins on the control socket on the 32-2B use pin 1 and 4 shorted, do they need altering to some other configuration? Perhaps to the configuration of the Tascam 34B!!
Thanks.. Ed.

[manning1]

doubt whether this will help. but as far as i know the 4D was meant to be used with the tascam 4 track recorders and not the stereo ones like the 32.
the only place i know that might help you is the techs at a place called TELETECH. hope they are still in business. they used to do lots of tascam service work. just try googling for them.
hope its not a wild goose chase. but i'm sorry i cant help further.
its been a very very long time since i used tascam products.
ive a feeling that connector is a control connector and i dont think it will work on a 32. but i might be wrong.

[manning1]

also - just an idea. try emailing tascam on the web and see what they say.
peace.

[The Ghost of HR]

Techno62,

The DX-4D is backward compatible to work on deuces like the 32 and 42.

No pin connections either, to be concerned about on the control cable. Simply plug it in and use the first two channels of the unit.

And to manning1,

As far as I am aware, Patrick is still there at Teletec up in Markham.

Cheers!

[manning1]

well i never ghost. they are still there .
good people to deal with.

[techno_62]

Hi, I've tried connecting the DX-4D to my 32-2B but it will not work. When I press the bypass button (in) I get signal to the VU meters, but on DBX (out) there is nothing and no record. The LEDs don't light up either.

Cheers,

Ed.

PS. I have tried all ins and outs.

[techno_62]

Hi, Me again thanks for all your input I will try these suggestions out.

Thanks,

Ed.

[manning1]

if i remember, though i could be wrong - its been years - there were a couple of versions of those dbx units. i would email tascam.

[The Ghost of FM]

techn 62,

You mention that the dbx unit's lights don't light up when you press the dbx functions on. Are you connecting the DX-4D's control cable into the back of your recorder and if so, does it fit properly? Without proper connection of the control cable to the deck, the unit will not work. If you have tried to plug in the cable but find the plug is different or their is no connection point at all on the deck for a dbx unit's control cable then that would also explain why it's not working.

Also, you mention you have the 32-2B. This is an older deck then the 32 and it may have been designed to work with a different dbx noise reduction unit then the DX-2D or DX-4D. If you have the owner's manual for the deck, it should state what the correct optional dbx unit is for your machine. If you don't have the manual, call TASCAM parts or service department and ask them. Do not e-mail them unless you are prepared to wait a long time for their response. Call them instead!

Cheers!

[Herm]

I got the Dx-2d/Dx 4d manual out and tascam says that the 2 channel unit can be pluged in to the 4 channel unit to act as a 6 channel unit in to a tascam 38. So it should work with your machine.
Only thing I can suggest is to check all of your rca inputs and outputs and make sure they are correct. It is pretty easy to make a mistake hooking those up.
Do you have a wiring diagram for the dbx unit.
Also Are you using a mixer or are you trying to use the mic inputs cause I dont think it will work that way. But I could be wrong on that.

[techno_62]

Hi,
I've tried every possible connection, made sure control is in properly. But still nothing. Should the connector at the back called cascade have any sort of dummy plug in it?

Appart from that I think reluctantly it may be a dud.

Thanks for all your help and I will keep you all posted.

Ed.

[Herm]

pins 123 are the main control signal comming off of pins 456 are sent to the other dx unit to pins 123. That is why pins 123 are shorted to 456 on the cable. If that makes any sense.
Is there any way that you could have a unit that was export and not set up for 120 volts? And do you have the wiring diagram for the rca cables?
Also you might pop the top off and see if a fuse has blown in the unit.
If the unit has a cord end on it that is not molded on it could be a export model. There is a plug inside of the unit to change the voltage that the unit takes.

[The Ghost of FM]

Should the connector at the back called cascade have any sort of dummy plug in it?

No. That connection is used when you have two DX-D4 units working together on an 8 track deck like the 38 or 48 as an example. In those cases, the second dbx unit is plugged into the first one to keep the control signals working properly on all 8 tracks.

Where did you get your unit from?

Was this an Ebay deal?

Cheers!

[techno_62]

Hi,
Fuses OK, control cable OK, mains OK, I'm out of ideas. This morning I put 400 sine through it and took it up to 1.3V with no responce, should the encoder input be around 0.316mv?

Ed.

[A Reel Person]

..............

[techno_62]

Hello I'm back, after a lot of searching I managed to get hold of a copy of the DX-4D with schematics. This has helped me sort things out. My findings were that the 32-2B has no control signal, only a short on pins 1 and 4. The DX-4D needed a small voltage to be sent via pins 4, 5, and 6. this supplied control to a compander and an optical switch which biased a transistor and allowing the DX-4D to opperate correctly. Not having these controls from the 32-2B I shorted out the optical switch and hey presto everything is working fine. I am also able to use the other two channels for other equipment.

Many thanks for all of your input about this project, I welcome your comments.

Thanka again,

Ed.

[Rossjet]

hello I am trying to hook up a dx-4d to my 2340 4 track. now I have a the same problem that the control plug does not fit in to the 2340.

so when you say that you shorted out the optical switch that means the Dx-4d is always in encode mode? and it works fine? if so why do you need to control for in the first place? why would tascam make the dx-4d have a control at all?

just want to know if this will work for me.

and where did you get the schematics? is there a link you can give me?

thanks

[jmarkwolf]

Why would Tascam design a 4-channel DBX unit for a 2-channel tape deck such as the 32? Is the Tascam Dx-2D compatible with the Tascam 32?

[techno_62]

jmarkwolf

I find that both units are backward compatible. If you study the schematics the only difference is the configuration of the control cable and the signal that it produces. This will be set by the machine that you use.