Re: Mockingboard output through IIgs internal speaker?

[mjmahon@aol.com (Michael J. Mahon)]

Hidehiko Ogata replied:

>Michael J. Mahon wrote:
>
>> Yes, this looks like a good place to mix in another audio source.
>
>Thanks!  Still trying to overcome the newbie inconfidence, you see ;)

You circuit analysis was fine--go for it!

>> Since the Mega II speaker output is a 5v peak-to-peak signal, and
>> is mixed in with a 470K resistor, and the Mockingboard output is
>> about 1v peak-to-peak (and adjustable with "hard" volume controls),
>> I'd use a couple of 100K resistors to mix in the two Mockingboard
>> channels.  IIRC, they are already capacitively coupled on the
>> Mockingboard.
>
>Hmm, wouldn't it be a bit redundant as Mockingboard has pots along the
>outputs already, as you noted?

You still need the 100K resistors to mix the levels approximately,
then the pots can be used to control the volume relative to the
Ensoniq and the internal speaker.

>> Although this should work fine, it, of course, mixes the stereo
>> Mockinboard down to mono.  And the internal speaker won't
>> do justice to the output the Mockingboard is capable of (anymore
>> than the internal speaker does justice to the Ensoniq output  ;-),
>> but you can always plug in headphones or an external speaker.
>
>Good point... I think it's just me getting older and lazier.  The
>plug-it-in-TV-and-go lightheartedness of 8bits appeals to me more and
>more these days, so less cables coming out of the box, the merrier ;).

I see what you mean...

-michael

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