You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
Museum of the Game® & International Arcade Museum® Forums
So I picked up a dedicated Space ace that was complete except the monitor and NTSC card
I purchased a reproduction NTSC card and installed a 4900 with the proper wiring for both. It's currently using an LDP-2000 and hi-tech conversion card.
I hooked everything up and while I can play a game and I can hear the direction beeps fine, the sound is too low. (Actually the startup beeps are extremely loud, but I don't think there is a way to adjust it) If I turn the volume knobs up, I still only faintly hear the dialog.
It's been a long time since I've owned a Space ace.