Difference between revisions of "MB PRO"

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(Clarify modem speaker input)
(Document TAD -> MB_PRO adapter cable)
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| 10 || Microphone in '''Isn't this mic out for the modem?'''
 
| 10 || Microphone in '''Isn't this mic out for the modem?'''
 
|}
 
|}
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== TAD conversion ==
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 +
Some sound cards have an '''MB_PRO''' connector but no [[TAD]] connector.  A cable can be made to allow internal modems with a TAD socket to be hooked up to the MB_PRO connector:
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{|class="wikitable"
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! Modem<br/>TAD pin !! Sound card<br/>MB_PRO pin !! Purpose
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|-
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| 1 || 8 || Phone line audio, from modem to sound card.
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|-
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| 2 || 6 || GND
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|-
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| 3 || 9 || GND
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|-
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| 4 || 10 || Microphone audio, from sound card to modem.
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|}
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TAD pins 2 and 3 can also be patched to any of the other GND signals on the MB_PRO connector if that is more convenient.  The two in the above table are just one possibility.
  
 
== References ==
 
== References ==
 
<references/>
 
<references/>

Revision as of 20:58, 12 March 2017

The MB_PRO connector is used to connect a Sound Blaster card to a Modem Blaster card. The signals can also be re-purposed for other uses.

The pin arrangement is as follows:

9 7 5 3 1
10 8 6 4 N/C

The purpose of the pins, from the point of view of the sound card, are:[1]

Pin Purpose
1 Audio GND
2 Key, no pin
3 Line-in
4 Audio GND
5 Line left TODO: Is this line out?
6 Audio GND
7 Line right (out?)
8 Modem speaker input. On a sound card, this input receives a line-level audio signal from the modem.
9 Audio GND
10 Microphone in Isn't this mic out for the modem?

TAD conversion

Some sound cards have an MB_PRO connector but no TAD connector. A cable can be made to allow internal modems with a TAD socket to be hooked up to the MB_PRO connector:

Modem
TAD pin
Sound card
MB_PRO pin
Purpose
1 8 Phone line audio, from modem to sound card.
2 6 GND
3 9 GND
4 10 Microphone audio, from sound card to modem.

TAD pins 2 and 3 can also be patched to any of the other GND signals on the MB_PRO connector if that is more convenient. The two in the above table are just one possibility.

References

  1. Creative Labs - Pin Assignment of I/O Jacks and Connectors on Sound Blaster Devices