I wouldn't trust the local stereo shops as far as I could throw them. Example: I saw a certified installer cut 8 inches of zip cord off of the reel Then he split it into 2 wires and then butt spliced the wires back to the original reel of wire! I didn't even bother to make him feel like a dumb ass, I just left.
Also I need something a little smaller than a coke can, preferably 2.5 X 1.9 square, height doesn't matter, but needs to solder to a PCB. On Thu, 30 Dec 2004 18:18:49 -0800, Mike Morris WA6ILQ <[EMAIL PROTECTED]> wrote: > > Go over to your local car stereo shop - the place where they > sell those 500w amps and build the latest and greatest > boogie buggys or thump trucks - and get a pair of speaker > isolator transformers. They may not call them that, but > picture a 8 ohm in / 8 ohm out transformer about the size > of a can of Coke or Pepsi, or a little smaller. > > Put one on each radio. Test by putting a speaker on the > secondary. It should work normally. > > Unhook the speakers. Wire the secondaries and the > speaker all in parallel. > > A friend has two of these setups in his vehicle, on two > Kenwood 742s... one radio is 10m / 6m / 2m and the > other is 220 / 440 / 1200mhz, and each radio has two > speaker outputs - the selected channel and the > nonselected channels. He has the selected channels > fed to one speaker (in the left door) and the non-selected > channels fed to a second speaker (in the right door). > > Car stereo shops have a few things to offer the ham - > like decent multiple fuseblocks, good automotive > DC wire, and speaker transformers. It's worth > spending an hour perusing their offerings... > > Mike WA6ILQ > > >--- In [email protected], DCFluX <[EMAIL PROTECTED]> wrote: > > > Anyone had experience with mixing the speaker output of 2 radios, > > > Say Motorola GM300's to one speaker? > > > > > > I originally tried a couple of resistors but I may have the wrong > > > values as they got hot as hell and one started smoking, I was > > > using 2 .82 ohm at 2 watt resistors for each radio, one resistor > > > in each speaker lead and at the center the speaker. My next > > > best guess is using a multiple winding transformer with three > > > windings of 4 ohms, but finding information on how to wind a > > > transformer to do that is impossible these days. Any Ideas? > > Yahoo! Groups Links > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
