Re: IIe sound output

[Simon Williams <DONTemail@luddite.ca>]

On 20 Nov 2002 20:32:22 GMT mjmahon@aol.com (Michael J. Mahon) wrote:
 
> Although several approaches to this modification have already been
> suggested, another was recently brought to my attention by Howard
> Katz, who read in an Apple II mag (A+ or Incider?) several years ago
> and for whom it works flawlessly.
> 
> It has the advantage of delivering a line-level signal (about 1.8 volts) at
> reasonable impedance (a few thousand ohms) that is referenced to
> Apple ground.  And unlike signals tapped from the speaker side of the
> Darlington driver, it is free of distortions caused by speaker inductance.
> 
> The idea is to tap the audio drive signal across diode CR4, near the
> speaker output on the main board.  The anode of this diode is ground,
> and the cathode is the desired signal.  (The cathode is the end of the
> diode nearest the black band.)
> 
> The tap can be done with miniature clip leads or Minigrabbers so that
> no soldering is required.
> 
> The ground side should connect to the shield of a cable with an RCA
> plug (or to the ground side of a female RCA connector), and the signal
> goes to the inner wire (or the central socket of the RCA connector).
> 
> This output is suitable for any amplifier or amplified speaker.
> 
> -michael
> 
> Check out 8-bit Apple sound that will amaze you on my
> Home page:  http://members.aol.com/MJMahon/
> 
> 
Thanks Michael,
That sounds like an ideal solution... I'll grab some mini clips next time I'm at Radio Shack and give it a try.
If I stop posting you'll know something went horribly wrong ;-)

SW