1960s? Philco-Ford Portable Compact Cassette Player/Recorder

[vortalexfan]

Hello everyone, today I went to Goodwill to drop off a modern Stereo System (early 2000s Emerson AM/FM Stereo Cassette recorder and 6-Disc CD Changer unit) and I went inside the Goodwill to look around and I found sitting on the shelf a what I assume to be a late 1960s or early 1970s Philco-Ford portable Compact Cassette Tape Recorder Model TRC - 25BKG that looks to of been made by either Sony or Panasonic (it has all original Rubycon capacitors in it and germanium transistors.)

When I got it home to check it out one of the battery terminals had came loose inside the cabinet so I glued it back into place and resoldered the wire back into place, and installed a new belt and cleaned the heads and the pinch roller, and tried it out with one of my tapes and for some reason the volume has to be turned halfway up to even hear anything.

I don't know if it's a matter of needing to be recapped or what, but considering it has Single-Ended push-pull output (SEPP) and has a 4" oval speaker in the cabinet I would of thought this thing would of been fairly loud but its not.

I need to look up some service data or an owners manual for this unit so I can look up some specs for this unit and see what all this unit would of came supplied with originally (there's a compartment in the back that I think might of housed a microphone inside once, or perhaps a power cord.)

See pictures below.

Thanks for your help.