Difference between revisions of "MB PRO"

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(Document TAD -> MB_PRO adapter cable)
(Line outs on MB_PRO confirmed personally. Also, tried out building an AC'97 mod. Also the only reference in the article is dead)
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The purpose of the pins, from the point of view of the sound card, are:<ref>[http://support.creative.com/kb/ShowArticle.aspx?sid=3026 Creative Labs - Pin Assignment of I/O Jacks and Connectors on Sound Blaster Devices]</ref>
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The purpose of the pins, from the point of view of the sound card, are:<ref><s>[http://support.creative.com/kb/ShowArticle.aspx?sid=3026 Creative Labs - Pin Assignment of I/O Jacks and Connectors on Sound Blaster Devices]</s> Link dead, need archived mirror</ref>
  
 
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| 4 || Audio GND
 
| 4 || Audio GND
 
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| 5 || Line left '''TODO: Is this line out?'''
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| 5 || Line out left
 
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| 6 || Audio GND
 
| 6 || Audio GND
 
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| 7 || Line right (out?)
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| 7 || Line out right
 
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| 8 || Modem speaker input.  On a sound card, this input receives a line-level audio signal from the modem.
 
| 8 || Modem speaker input.  On a sound card, this input receives a line-level audio signal from the modem.
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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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== AC'97 mod ==
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It is possible to connect AC'97 front panel pins to a MB_PRO header, although it's still a work in progress.
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{|class="wikitable"
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! AC'97 pin !! Sound card<br/>MB_PRO pin !! Purpose
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| 5 || 7 || Line out right
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| 6 || 6 || Line out right GND
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| 9 || 5 || Line out left
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|-
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| 10 || 4 || Line out left GND
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Maybe in the future, this table might get a microphone update if it's even possible. AC'97 lists a thing called "microphone power" and that seems nowhere to be found on MB_PRO.
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'''NOTE: If you connect it like this, the line out coming through the MB_PRO header will be orders of magnitude quieter.'''
  
 
== TAD conversion ==
 
== TAD conversion ==

Revision as of 07:46, 20 July 2022

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 out left
6 Audio GND
7 Line out right
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?

AC'97 mod

It is possible to connect AC'97 front panel pins to a MB_PRO header, although it's still a work in progress.

AC'97 pin Sound card
MB_PRO pin 		Purpose
5 7 Line out right
6 6 Line out right GND
9 5 Line out left
10 4 Line out left GND

Maybe in the future, this table might get a microphone update if it's even possible. AC'97 lists a thing called "microphone power" and that seems nowhere to be found on MB_PRO.

NOTE: If you connect it like this, the line out coming through the MB_PRO header will be orders of magnitude quieter.

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 Link dead, need archived mirror
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