August 08, 2025, 03:58:49 am
0 Members and 1 Guest are viewing this topic.
The J-PAC does not contain any active sound circuitry owing to the JAMMA standard not providing good sound capabilities (one speaker only), nor any powerful enough voltage supply being readily available. The JAMMA standard is mono sound. The JAMMA edge connector speaker wires are routed to screw connectors on the J-PAC. These connections can be used to connect a powered PC sound card to the cabinet speaker. Alternatively for better quality stereo sound, simply use a normal pair of PC speakers, either powered or passive, and place inside the cabinet or wire to the cabinet speaker(s).
The speaker screw terminals on the JPAC are just a connection to the speaker pins on the edge connector. So yeah, it goes PC > amp > JPAC screw terminals. This then routes the sound to your cab speaker, via the edge connector.
Quote from: big10p on April 22, 2017, 06:59:57 amThe speaker screw terminals on the JPAC are just a connection to the speaker pins on the edge connector. So yeah, it goes PC > amp > JPAC screw terminals. This then routes the sound to your cab speaker, via the edge connector.Oh I see. What type of amp would I need?
Quote from: SuperGojira2001 on April 22, 2017, 10:52:46 amQuote from: big10p on April 22, 2017, 06:59:57 amThe speaker screw terminals on the JPAC are just a connection to the speaker pins on the edge connector. So yeah, it goes PC > amp > JPAC screw terminals. This then routes the sound to your cab speaker, via the edge connector.Oh I see. What type of amp would I need?I have these in my MAME cabs:http://www.ultracabs.co.uk/arcade-sound-amplifier-60-p.aspThere are several other ones available now, though. These require a 12v power supply (hook into your PC or cab PSU). As PC outputs sound in stereo, twist the left/right channel wires together, and connect them to the positive+ input on the amp.
What exactly are you trying to do? Big picture-wise...