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Author Topic: Space Invaders cab just acquired - some initial questions  (Read 2038 times)

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markronz

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Space Invaders cab just acquired - some initial questions
« on: May 11, 2011, 10:12:25 am »
Hello Everyone, Recently I picked up this Space Invaders cab at a rummage sale for ten bucks.   Here's a few pictures.  Seems to be in pretty decent condition.


Normally, I am the type of guy who will make "the one arcade machine to rule them all" with all custom artwork, trackball, lit up controls with LED-Wiz, the whole 9 yards.   So that was my first instinct on what to do with this cab again.  But the original side art is in ok condition and it does look pretty cool, so it has me rethinking everything.  I was thinking this might be a good time to try out a more minimalist approach, and make more of a budget cab.   I mean, it is really the games you play, and how well executed your main menu is that really make a cab special.  All the bells and whistles are nice of course, but just not always essential. Not to mention the fact that making one of these ultimate sorts of arcades gets pretty danged expensive.  Along the way of making these other cabs, I seem to have acquired a whole ton of extra parts as well.  I now have at my disposal a 20" CRT monitor, all black buttons, player buttons, two joysticks, a spare keyboard encoder and a pretty decent computer that just needs a hard drive.   So that is a pretty good start to what I'd need to complete this cab.

Some things that I would still need are a speaker to use, and a used coin door to fit in here:


First, about the speaker, all I've used so far is a 2.1 PC speaker system, but that might be a little overkill for this cab (not to mention only one speaker hole).  Is there a specific size speaker that is meant to fit in this size hole?  And does that speaker have a standard 3.55mm  male connector that I could connect into the audio out port on the computer?    Just wondering if people had any recommendations on what to use here that is A) reasonably priced,  and B) will easily interface with a computer. And maybe even has a volume control.

The second, about the coin door.   I guess all the other cabs I've worked with had the standard Happ size coin doors in them, not one of these wide coin doors.   Any idea where I could find a cheap used one of these?   Is there anything special I would need to search for, when trying to find one, to find this type of coin door?  I wasn't sure if there was a specific term used to describe this wider more rectangle sort of coin door or something?

About the only other thing I was thinking I might need is some cheap white or red buttons.   As I mentioned before, I have a bunch of black (happ style) push buttons.   I was thinking that I could swap the button part from the button casing in between the different colors, like I've seen others do before, just to spruce things up a bit.

Well I think that's all the questions I've got for now.   Let me know what you guys think about the coin door and the speaker and if you have any recommendations for me!  Thanks!
« Last Edit: May 11, 2011, 10:14:11 am by markronz »

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Re: Space Invaders cab just acquired - some initial questions
« Reply #1 on: May 12, 2011, 12:25:56 pm »
I cant answer your questions but thats a very very nice piece of history for $10!
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sapro

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Re: Space Invaders cab just acquired - some initial questions
« Reply #2 on: May 12, 2011, 01:21:26 pm »
Nice find.

That speaker hole looks like a standard 6x9, used to be very common size in American cars. Get a small car stereo amp (bridged/mono) to juice it and that will put out plenty of sound.

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Re: Space Invaders cab just acquired - some initial questions
« Reply #3 on: May 12, 2011, 01:29:35 pm »
(typed as sapro was responding, but I'll post it anyway)

The speaker they used was a plain 6x9" 8ohm car speaker.  Ask around, a friend or relative might have the original ones out of their car laying around if they've replaced them with aftermarket ones.  You could drive it with a little car or motorcycle amp like this one: http://cgi.ebay.com/Mini-Hi-Fi-Audio-Stereo-Amplifier-Car-Motorcycle-Boat-/150603393967?pt=LH_DefaultDomain_0&hash=item2310a96baf (the claimed 450w output is laughable.  It's probably around 15-20w).  You might be able to drive it off the pc's power supply depending on how much current it draws.  Because of the way these cheap little amps are made, you can't bridge them, so you'd have to run the speaker off one side and make the computer output a mono signal.  More expensive models have remote volume controls, etc. that might be handy.

Looking at the manual (google arcade manuals pdf), the speaker cover was a square louvered piece of metal.
An old-school square speaker grill or mdf square with grill cloth stretched over it would probably look fine though.

I don't think I'd be a fan of having only one speaker, which fires into my left knee.
I'd be tempted to install a pair of speakers in a way that doesn't harm the cab.
...possibly make a panel that covers the coin door/speaker area, but doesn't harm the cab.

You almost have to do an original or similar marquee/bezel on that thing.

markronz

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Re: Space Invaders cab just acquired - some initial questions
« Reply #4 on: May 12, 2011, 01:47:01 pm »
(typed as sapro was responding, but I'll post it anyway)

The speaker they used was a plain 6x9" 8ohm car speaker.  Ask around, a friend or relative might have the original ones out of their car laying around if they've replaced them with aftermarket ones.  You could drive it with a little car or motorcycle amp like this one: http://cgi.ebay.com/Mini-Hi-Fi-Audio-Stereo-Amplifier-Car-Motorcycle-Boat-/150603393967?pt=LH_DefaultDomain_0&hash=item2310a96baf (the claimed 450w output is laughable.  It's probably around 15-20w).  You might be able to drive it off the pc's power supply depending on how much current it draws.  Because of the way these cheap little amps are made, you can't bridge them, so you'd have to run the speaker off one side and make the computer output a mono signal.  More expensive models have remote volume controls, etc. that might be handy.

Looking at the manual (google arcade manuals pdf), the speaker cover was a square louvered piece of metal.
An old-school square speaker grill or mdf square with grill cloth stretched over it would probably look fine though.

I don't think I'd be a fan of having only one speaker, which fires into my left knee.
I'd be tempted to install a pair of speakers in a way that doesn't harm the cab.
...possibly make a panel that covers the coin door/speaker area, but doesn't harm the cab.

You almost have to do an original or similar marquee/bezel on that thing.


Thanks for the information guys!   That amp looks like it might be a good option, but now you've got me thinking with that panel to cover the speaker/coin area though.   I generally like the idea of having coin doors on arcade machines, just cause I like the authentic look.   But after looking on ebay lately, I can't seem to find a reasonbly priced used coin door that'd fit.   Plus, I do also like having two speakers as well.   If I added a panel in the front, I could use normal PC speakers too, if I wanted to.   Definitely something to think about.

I'm not really looking forward to touching up the side art on this thing.   Overall, its in pretty decent shape, but still needs a few holes filled and a few scratches painted over.   That will be fun trying to match the paint colors!

Edit:  typo
« Last Edit: May 12, 2011, 03:38:23 pm by markronz »

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Re: Space Invaders cab just acquired - some initial questions
« Reply #5 on: May 12, 2011, 09:33:23 pm »
Yeah, definately just a 6x9" speaker.

You want an old style coin door like this
http://cgi.ebay.com/Galaga-Arcade-game-coin-door-/160585123249?pt=LH_DefaultDomain_0&hash=item25639e85b1

That cab is very nice for $10