Differences

This shows you the differences between two versions of the page.

--- arcade:sega_city_cabinet_pinouts [2023/05/17 21:02] – Fixed table NFG
+++ arcade:sega_city_cabinet_pinouts [2023/05/26 17:09] – Corrected part number (oops) NFG
@@ Line 12: / Line 12: @@
 ^  Function  ^  Pins  ^  Plug  ^  Socket  ^
 ^  Controller |  12  |  176280-1  |  176299-1  |
-^  Extra Buttons |  10  |  176280-1  |  176288-1  |
+^  Extra Buttons |  10  |  176277-1  |  176288-1  |
 ^  Analogue |  8  |  176275-1  |  176286-1  |
 ^  Video |  15  |  176279-1  |  176290-1  |
@@ Line 106: / Line 106: @@
 ===== Audio =====
-Sega used the same connector with two different pinouts, depending on the audio function.  The signals running into the stereo amplifier (if there is one) were different than the stereo speaker outputs from the amp or power supply.  While all of these cabs had stereo speakers, many had only mono sound.
+Sega used the same connector with two different pinouts, depending on the audio function.  It seems that most Astro and Blast City cabinets used the same pinout, some Astro City cabs had stereo amps that used an alternate arrangement.  Both are shown, but for your own sanity, you should check the wiring in your cab.
 {{:arcade:amp-4p.png?80 | }}
 ^ Pin ^ Function ^ Pin ^ Function ^
-^  Speaker Output  ^^^^
+^  Speaker  ^^^^
-|  1  | Left + |  3  | Right + |
-|  2  | Left - |  4  | Right - |
-^  Amplifier Input  ^^^^
 |  1  | Left + |  3  | Right + |
 |  2  | Left - |  4  | Right - |
+^  Amplifier  ^^^^
+|  1  | Left + |  3  | Left - |
+|  2  | Right - |  4  | Right + |
+Though every *City cab had stereo speakers, the default audio arrangement supported only monaural sound.  The audio from the PSU to the speakers had a jumper wire from pin 3 to pin 4. This connected both speakers in series.
+{{:arcade:amp-4p.png?80 | }}
+^  Mono Jumper  ^^^^
+|  1  | Left + |  3  | to pin 2 |
+|  2  | to pin 3 |  4  | Right - |
 ===== Power Supply =====
 For the Astro and Blast City cabs, the power supplies didn't change much.  The Net City and Naomi cabs were very different.