redeyedjim wrote:Thanks, Smolder, that's exactly what I was looking for. If/when I do step up to a bigger JBL, it will be with an aftermarket combo cab. Any other words of wisdom?
Smolder wrote:Allen amps makes an excellent princeton combo cab for both 12's and 15's. And... he's a cool cat, very helpful with great products.
redeyedjim wrote:Smolder, if you see this: what are you using for a rectifier tube in your SF Princeton? turns out the previous owner of mine put a 5Y3 in there, which seems very...limiting. The tube chart for the SF Princeton calls for a 5U4GB, but I see a lot of using something else (5V4, GZ34, etc.). What are you using in yours?
tatittle wrote:I dont think a 5Y3 is wise...that is probably just what the guy had laying around and since it "worked" he left it. I dont have the specs in front of me but I recall it is FAR different than the 5U4GB or GZ34. The Champ and some tweeds use a 5Y3...maybe just the class A circuits. I imagine you are not only getting wacky voltages etc inside, but that rectifier is risking harming the components. Smolder etc. voiced what I have heard re: different acceptable choices for rectifiers in a PR. A 5V4 has been suggested to me (like Smolder referred to), I havent tried one yet. The 5U4GB will have more sag than the GZ34, and more still than a solid state plug-in. I have read solid state are not recommended for PR because of the level of voltage change.
If there is a code on the speaker you can decipher its manufacturer (usually 7 digits long). e.g. 1377422
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