Interesting Modified SDC2300 On Gumtree

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Total Re- Hash.

Positive Terminal Orange Wire to the sdc internal speaker is on the left when viewing opened from the front.
Taking this Orange extended Positive wire to the middle of the newly installed 3 pronged two way switch returning from either ( but one chosen ) of the outer looping switch terminals back down to the internal speaker.
The other Orange existing right hand speaker wire remains in place to the internal speaker.
Internal speaker is now Operational with on / off switch.

The new switch spare looping terminal is now wired to the new 1/4`` chassis socket that links the bottom ring of the 1/4``stereo jack.
The Black wire is now connected to the new chassis socket terminal that is linked to the middle ring stereo part of the 1/4`` jack.
The Red wire is now connected to the chassis plug that links the upper part ring of the stereo jack.
External Speaker SPK07 with 1/4`` Jack that is inter-changeable with the GPX is now Operational Loud & Clear when the the new installed switch is flicked that now defuses the sdc internal speaker.

1/4`` Jack Koss UR30 head phones Operational when plugged into the same newly installed 1/4``chassis socket ( Pending ) to loop the headphone positive / active speaker terminals in series up at the ear muffs to achieve both headphone speakers then returning in Black to the middle ring stereo plug.

Original SDC mini 6 pin socket remains in place and Operational with the original sdc head phones.

Spliced wires not in use are Yellow / White / Blue / Green.
They are rolled up and conductivity capped in the event for potential future use.
I also found an Acoustic guitar stereo equalizer 1/4`` chassis plug that was a little shorter / thinner with heavier terminals than the Jaycar 1/4`` chassis plug.
It also gave a few mm more clearance regardless that the Jaycar socket is just fitting compatible.

Benched tested A - OK @ present will up date performance when tested in the field.
Any how hope this helps anyone contemplating this conversion.
 

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