From - Mon Aug 26 21:19:26 1996 Path: masters0.news.internex.net!newshub.internex.net!newshub1.internex.net!viper.inow.com!samba.rahul.net!rahul.net!a2i!bug.rahul.net!rahul.net!a2i!ddsw1!news.mcs.net!usenet From: twisnion@mcs.com (TomW) Newsgroups: rec.games.video.arcade.collecting Subject: Re: If you build harness converters, READ THIS!!! Date: 27 Aug 1996 00:32:34 GMT Organization: MCSNet Services Lines: 35 Message-ID: <4vtfn2$4b1@Nntp1.mcs.net> References: <4vr8sq$ahl@crchh327.rich.bnr.ca> NNTP-Posting-Host: twisnion.pr.mcs.net Mime-Version: 1.0 Content-Type: Text/Plain; charset=US-ASCII X-Newsreader: WinVN 0.99.7 key out of the finger board, too. > >Breakthrough #2: I was browsing the aisles at the local electronics >junk store looking for small range radio broadcasters that I might use >to do a broadcast "audio tour" of my home if we do decide to sell it >(narrate onto a moebious looped tape and post a sign with the >frequency) when I found the perfect thing for this project. Marlin P. >Jones and Associates sells lots of very low cost kits to do these >kinds of things and kit DK-27 "TDA7052 1W Power Amplifier" is just the >thing. It is a 1W amplifier module with a 1" square PCB designed to >be used as part of a larger project (i.e. *just* the amp stuff). The >Philips TDA7052 is a general purpose 1W amplifier ideal for low power >battery operations from 3V to 15V (I used 5V but in retrospect, I bet >12V would have been a better choice to reduce 5V current draw). Very >few external components are needed (none in our case). No heat sink >is needed. The design is short circuit protected and is intended for >an 8 Ohm speaker (just like JAMMA)! This thing could not be more >perfect!!! The amplification pot even comes with a plastic doohickey >that sticks into it so you have a very usable knob. The PCB fits >perfectly onto the edge of the 2 female connectors and wires into the >assembly easily. The only drawback is that it assumes a Speaker - >connectoed to Ground as the vast majority of amps do so you need to >check your PCB before hooking it up. If you want to get one of >these kits you can check your local place as the kits are very popular >and common or you can order directly from MPJ&A (ask for a catalog >while you're at it) at 407.848.8236. My price? Just $7.95+tax!!! > > JDR Microdevices, also has an amp (which sounds like the same one you described), 3-15VDC 1 Watt Output. I've used many of these in games and they do work well. The are 5.95 each 1-800-538-5002, part DK-27. If you really want POWER you could/might be able to modify the 15 Watt Alarm Kit (Part RK-MB1 7.95), that'l blow your windows out, but I've never tried that one.