Most of you are probably familiar with the big Panasonic boomboxes such as the RX-7000, the RX-5600 and the RX-5500. Well, here is their little lost brother the Panasonic RX-5040 which was offered in the late 1970's. It's a minimal entry level boombox with just a few features. As you can see it is a single cassette box with AM and FM band radio. It also features a 4 way LED meter system for AM/FM tuning and battery levels. It was actually one of the first boomboxes to utilize an LED meter for batter and signal strength.
The RX-5040 weighs in at just over 10 pounds and measures 15.25" x 4.325" x 9". Obviously this boombox wouldn't be at the top of any collectors want list but it does represent the bottom end of the Panasonic line. And, it is a nice minimalist looking box as well. These sell for around $50.00 in good working and cosmetic condition.
I've posted about the Panasonic SG-J555 before so I thought I'd mention the Panasonic SG-J500 here. The SG-J500 was produced in 1984 and, like the SG-J555, featured an expandable tray with a turntable. You just push the button on the front and out pops the turntable. The box was also branded as National. The main difference between the SG-J500 and the SG-J555 is that the SG-J555 has what Panasonic called "Ambience" which is essentially a sound expander. The SG-J555 also had some minor aesthetic changes but really both units are very similar. The turntable can run at both 33 and 45 speeds. It also came with an optional car adapter cable, part Panasonic RP-952, that allowed you to power the unit through your cars cigarette lighter.
The unit was powered by either 100 AC or D cell batteries. It weighs approximately 11 pounds and measures 15.5 x 10.5 x 8.5 inches. Obviously it's a little deeper then most boomboxes because of the turntable.
The Panasonic SG-J500 is a pretty popular boombox. Not just among collectors but also among retro fanatics that want a unique conversation piece. The retractable turntable gives them just that. These boxes will sell anywhere from $80.00 in below average condition all the way up to $250.00 in mint working condition.