8
SX-12a, SX-20
There are 5 external connections located on the front surface of the audio board's metal bracket (Fig. 3).
Audio Input:
Line:
RCA jacks,
2VRMS/+6dBV max (digital clipping)
, with an impedance pf 20 k ohms
Audio Output:
Headphone:
1/4" stereo phone jack, 0.5 VRMS into 8 ohms
Line:
RCA jacks,
2VRMS/+6dBV max (digital clipping)
, with an impedance of 470 ohms and a
load impedance of >10k ohms
SX-7
There are four external connectors located on the SX-7 audio board's metal mounting bracket. See
Figure 4. There is also one three pin header (JP1) for an optional user-supplied headphone connection,
which would allow for a front panel headphone jack.
Figure 3: SX-12a, SX-20 Connector Locations
RIGHT LINE IN
LEFT LINE IN
HEADPHONE OUTPUT *
RIGHT LINE OUTPUT
LEFT LINE OUTPUT
* Stereo Headphones
SX-12a/SX-20