Guitar Amp 6sn7 Sound
Jazz 6L6 Power Amplifier. Not every tube can play Jazz. There is only one tube family that has the right tone, the 6L6 family. 6L6s are being used in many musical instruments such as church organs, pianos, guitar amps and even theatre amps. For one reason, the tone! In 6L6, there is an electronic lens that focuses electron beam onto its plate.
In, I talk about a new amp project. Since this post, I bought several stuffs to build it. But while looking for parts, I talk with several people. And they convince me to build a push-pull instead of a single-end.So, I got 4 outputs transformers (2 SE and 2 PP), I gonna try the PP first, and if this work great perhaps, I will sell the single transformers or build a second amp.The main difference between single-end and push-pull, is distortion.
In fact, SE produce a lot of harmonics, so a lot of distortion. Beside this is a bad idea for a power amp, this is really what a lot of people call a “real tube sound”. Anyways let’s start with a full featured push-pull, and perhaps came back to a simple SE just for the fun.The main issue right now, is that push-pull are a lot of more complicated.
I mean you can build a simple SE with only a spare components. This is not the case of a push-pull. For a single channel, I need 2 tubes, 1 bias power-supply, a highly regulated power supply and a phase shifter.For the tubes, I decided to use some KT88. In fact, a friend give me a spare matched quad of NOS (plain old) Gold Lion tubes + the needed output transformers so. This tube are really great for the HIFI.
And they look really great!!!For the input stage, I decided to do something not really common. In fact most tube amps use some ECC82 / ECC83 for the input stage. My choice is something little different cause, I want to use some bigger tube. A lot of people say the 6SN7 (or 12SN7) are great for this stuff too. And some high quality power amps tube this, so why not. After looking for a while for a good schematic, and tested severalls stuff, here the one I gonna build:In the comming (soon I hope), I will describe the schem and the modification I made. Right now, I’m waiting for the power transformer (comming from US take a long time).
In a next post, I will post some photos of my input test bench Enjoy light? Related Posts.This entry was posted in and tagged,. Bookmark the. Hello et Bonjour!Perhaps you should look for a simpler bias system to safe cash and simplify things. Cathode bias = No bias adjustment when you swap tubes! I recommend a fender deluxe 5Y3 circuit with cathode bias, there is no fixed voltage supply to the grids, the cathodes are grounded. Substitute rectifier tube with silicon diodes, or switchable recto.
Tube rectifier in double-end amp = power supply sag = sustain. Very loud for a hobby amp.I’ve built a few SE amps from scratch, but would recommend using an old chassis from a 50′s radio as a good starter project as well. I am planning an amp in an old mono radio phono unit, SE with all transformers in place, $25 at the auction.
It will be the amp/record playing computer desk! Anyways, good luck and merci pour l’anglais. I have built the same amp excluding the second tube. I am using plitron power transformer along with Hammond power out put transformer.No hum the sound is ok little low on power. I will check it at 1khs and 1.5 volt input signal. On a fixed load of 8 ohms. The tube compliment is two 6550 per side and one 12au7 as a driver.
There is no feed back applied.A simple switch can be applied to convert this to a triode or ultra linear.Expensive project will last for a long time.Svetlana tubes and solen caps. Hi,Nice design. I started building PP screen tapped amps with EL34′s and 5881′sback in the late sixties. I’m now looking at doing something with sextet or octet P-P6550′s and custome toroidal transformers or making the transformers my self.Questions: Have you looked at toroidals and why did you choose a 33% screen tap asopposed to 40% (more common)? What are your feelings about fixed bias vs.
By the way, I still have the old 6SN7 / 5881 and 6SN7 / EL34 amps. They stillwork 40 years later.
Cymbal cleaner polish kit. I still beleive in Altec 511B’s and 802D’s and EV T350′s. Jan 10th 2009. Build the same amp excluding the second driver tube as mentioned in my previous comment.
Caution for every one. I tried to check the voltage without the tubes. Voltage readings were measured it was all ok. The second day i wanted to re arrange some of the wires at the kt88 sockets at pin #5 pin. I did get a shock at this point. A warning to all the diy please discharge the.22uf Caps and the high voltages at all points. My second tube ia a 12bh7.
Guitar Amp 6sn7 Sound Kit
I hope this will benefit all of you.Thanks.