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Find out where the wire goes after it leaves the 1/4" jack. I have a solid state amp with line out, can this be plugged into the amp as a preamp for testing? " Depends if that is an input or an speaker output jack. would this be an input? there is a round four pin socket on the side. "Also the amp has one 1/4 inch jack that was not connected to the organ. so you will need a tube for that section in order to try the amp. Im asuming that it had a 12ax7,12at7 or 12au7. I see that their is a mini nine pin socket to the left of the 6l6's. They sell the most inexpensive step drill that has the correct diameters to add sockets in a chassis.Īt least one more 9 pin socket would give you some options to add some gain and tone controls. One for rectification two for power pentodesĪ nine pin socket for a 12ax7 preamp and phase inverterĪn output tranny designed for 6L6's in push pull. You now have the basic parameters of the amp you can build in this chassis with the basic parts you have there.
LOWREY ORGAN FORUM DRIVER
Unplug and discharge your power caps at this timeĭon't just spark a screw driver across the terminals, yeah the big blue snap is cool, but using a discharge wand is the way to go. measure them the same way as you did pins 1 and 8 on the 5U4 they will be pins 2 and 7 on the 6L6 sockets. With your meter still on AC select a scale for about 20V and put you meter leads direcly on pins 1 and 8 and verify that there is 5VAC there and not too much higher, write this measurement down too You'll also want to pull the 5U4 and the measure pins 4 and 6 to ground, only this time use the AC scale at its highest setting With your meter set to it's highest DC scale measure from the different lugs on that big cap can to chassis ground and write the voltages down You'll want to pull those 6l6's leave the 5U4 in and take some readings to know what voltages you have available to work with in your design If yes then be aware of all your shock hazzards ( that big silver cap can) Well first thing I would do find some lumber and nail up a cradle so you can flip this chassis with its guts up and the tubes not touching anything. Very cool chassis! nice and simple easy to work with, and it has a 9 pin socket for your preamp, two would have been nicer, but hey this is a budget build right? I also have a pair of P10Q's from the same organ, one in good shape and one needs to be reconed. I don't have much experiance reading schematics.
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I am about half way through with a champ build, so I can solder. Nothing too loud that will breakup nice at lower volumes. I like blues and classic/ hard rockand most other kinds of music.I would like to build something fenderish. RayHi! My name is Gayler and I am a want to be musician. There is a wonderful resorse of knowledge here for you to learn from. So fill out your profile, introduce yourself properly and discribe what you would like to acomplish (what style amp you would like to build).ĭo us a favor too, don't run off, stick around, read some of the old posts and enjoy yourself here.
LOWREY ORGAN FORUM FULL
Your organ chassis is a good score full of many things you'll need to build an amp on a budget. Those are the sort of things that would heavily influence the type of amp you would want to build. Other things people on here may like to know is if you are a guitar player, and what kind of guitars you own and maybe what genre of music you play.
LOWREY ORGAN FORUM PRO
I myself am pretty new to the tube amp world and have built a 5E3 Deluxe, converted a few odd amplifiers into guitar amps and I'm currently building an 18 watt marshall, a 35 watt frakenstien of a 5E5 Pro with a Black Faced style preamp and tone stack and a simple 10 watt class AB1 bedroom amp. It doesn't matter if you havent picked up a soldering iron before or perhaps you've a masters degree in electronics.īut if these folks don't know at what level to comunicate to you, they will likely err on the side of caution and not offer much help. They contain lethal voltages and many EXPERIENCED craftsmen here may shy away from replying untill they know where your skills are. As many will no doubt remind you, tube amplifiers can be VERY dangerous. Second lets get to know who you are and what kind of experience you have. Who knows you might be just a few blocks from someone else here. Just my opinion here,so don't take any offense because none is intended, fill out your profile completley. Your post is kind of open, and a bit vauge. On this site you'll find hundreds of enthusiastic hobbiests, myself included.