6J7 has a really nice gritty overdrive sound, and lots of gain.
The 6J7 pentode preamp tube grinds like a chainsaw. They are great for Blues Harp.sought after by harmonica players. They have a really distinct tone.Ī lot of that because of the field coil speaker. These amps sound really great when they are working. The field coil is helpful in finding the approximate age. The field coil speaker was used in amps during the late 1930s and early 1940s. Guitar amp probably first invented by Rickenbacker, Valco popped up shortly afterwords.Īnd it's from the early 1940's probably.
Although many people say that he did.that's not really correct. Leo Fender did not invent the guitar amp. One of the first guitar amps, that predates Leo Fender's amps. So, this amp was originally paired with a matching lap steel guitar, probably.īut what you are looking at is the dawn of guitar amps. These companies cashed in on it, by manufacturing a matching amp and Lap Steel Guitar, as a set. Hawaiian music used to be the most popular in the world. You will NOTE: that the input jacks say "instruments," and not "microphone." These amps were primarily intended for electric lap steel guitars.or a microphone.
One more of these was sold by "NATIONAL."īut it's still the same .all made in the same place - and sold by different companies with different names attached to it. You will notice that these amps had several different grill designs.and several types of grill cloth.īut they are the same amp chassis, with different names attached to the grill. (the Oahu amp has a different grill, with a Palm Tree Logo, but basically the same amp) It is very similar to an amp called: "Oahu." Also made by Valco, and sold in Hawaii. It has a field coil speaker (the speaker has high voltage so don't shock yourself) I tend not to do that, just because I like to keep them original, but it's not like they're super rare or valuable where a conversion would detract from the value.Valco Chicago made these amps for Supro. You can also convert it to a 'modern' standard 1/4 jack - that's pretty easy to do also. You will also find folks selling ready made cables too. Easy to wire an adaptor to a 1/4 inch plug. You can find the mating plug, 75-MC1M, on ebay. The output jack you have is fairly common for old Valco instruments, as well as a lot of old PA and radio gear. I have mine tuned to C6 currently, although it may be headed to E9 like JH's. I did a couple of posts on my blog about cleaning mine up: The serial on yours indicates it was made in 1957. Great find for such little money! The pickups on them are wonderful. I have 3 (I think) Supro lap steels, including one identical to yours.
Congratulations! Lap steels are very cool.
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