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(Topic ID: 228779)

Adding Head Phone Jack to System 11 Machines

By darcangeloel

5 years ago


Topic Heartbeat

Topic Stats

  • 26 posts
  • 5 Pinsiders participating
  • Latest reply 5 years ago by wayout440
  • No one calls this topic a favorite

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Topic poll

Sort: Original A-Z Score

“Would you add a headphone kit to your system 11 games?”

  • Hell Yes! 9 votes
    56%
  • Hell No! The sounds are super basic take your beep boop butt somewhere else :) 3 votes
    19%
  • Maybe if the cost was right? 4 votes
    25%

(16 votes)

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#22 5 years ago
 
MVC

Pinthetic

Pinside member

US Lodi, CA

13y 49,600 265 1

Years ago Data East put a headphone accessory on games at the ACME show in Reno. It was called "Hear It" and was supplied be Incredible Technologies. It had two channel, stereo, output that could be combined into "Mono".

One method was to use an audio transformer arrangement, from "Radio Shack", attached to the speaker output and the other was a direct connect to the audio pot. The board has two audio amps, LM386, and a volume pot.

I have attached the schematic for it.

See images.

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#24 5 years ago
 
MVC

Pinthetic

Pinside member

US Lodi, CA

13y 49,600 265 1

Maybe this will help:

Pot Wiring To Hear It Inputs (resized).jpgPot Wiring To Hear It Inputs (resized).jpgText 1 (resized).jpgText 1 (resized).jpgText 2 (resized).jpgText 2 (resized).jpg
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