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At my motherīs it is still out old RCA Stereo-Ortophonic from 1957-58. I donīt remember the model No. There are two separate wooden enclosures, both the same size, big and with metallic angled legs that lifted the body about 1 feet from the floor.
One of the enclosures is just a speaker and only opens at the back, the other has a top lid, and inside there is the record changer (much like hi-voltīs), and space for the radio (but ours had not a tuner, so we used the space to store records). The amplifier is mounted on its side, so all the controls come up in one side of the turntable. For what I can see on the last photo of the SHC-4, where the amplifierīs back panel just pops out, it is the same chassis, or something much alike.
It used a 5Y3GT, one 6V6 on each channel, and three 12AX7 in cascade, one triode section of each tube was used for each channel.
Each channel had two tweeters, mounted like in the SHC-4, one angled to the left and the second to the right.
The difference in internal volume among the two enclosures (the main one had half its height used by the comprtment for the record player) must have outraged the stereo purist. However, it sounded very pleasantly.
Now that every home theater takes advantage of the non-directionality of the low frequencies and use only a woofer for the bass, it is weird to see TWO 12Ļ speakers side by side on the SHC-4 (and the tweeters at the center). Well, at that moment nobody at the industry knew better, I would have made the same mistake.
The tone control used a 7-pin couplate (passive RC modules which were, I think, the first attempt at integration). About 1976 it was repaired, and the technician broke one of the couplates. I didnīt know how to calculate the values of the components and had to figure them out, but at the end had both tone controls working with discrete R-Cs.
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