Tube Amp Archive

Hmmm, im speaking from expiriance that ceramic caps are bad for audio path. When compared with Fender im reparing FM212r all the capacitors in audio path are poly oor mylar,mkp oor mks.. And i know what im talking abouth. Now back to topic, the IC's ar partial repaired because someone try to repair ...

I have found on my hybrid amps that if the board traces that bring the AC filament to the tube run passed preamp sections ,that AC heater noise can be greatly reduced on many amps by running twisted wires to the tube and unpowering the traces on the board. In the same vein and dependant on the boar...

i looked up the board and found that heating from tube 12volt connected over 4-5pins is strait conected from transformer without rectification and filtering??? Not sure I follow you. It's very common to power tube heaters directly with 6.3vAC coil from power transformer, no filtering, obviously, be...

Tube is chineze and is NOT WERY GOOD FOR AUDIO.. i prefeer more EI Nis from Yougoslavia oor old Philips-Adzam tubes !!! LIKE !

compleet print

Hallo. Im still newby to this forum but i do have hughe expiriance with vacuum tube amps and electronics in general. Now lets get to point. Few days ago i have bought for small money broken Marshall valvestate 80v guitaar amp. From first moment i new that main problems were end transistors and i sol...

THE GODS WERE BEEN VERY GOD TO ME TODAY !!!
I just cant belive what i found today !!! It is brand new ,twoo piece and wery smal price !!! Look at the picture below !! 12 inch brand new !!!

Im thinking of Vibrolux build from 212r.. Hmmmmmmmm.. For Dumble SSS and Overdrive reverb im gonna build new chassis but when my CNC OX machien is ready..Im building one so i can make my own chassis for me and other people.. Regards...

I allso brought home 10" eminence speaker for the amp im building. Only thing i did on it is open the cone cap in middle so the high tones can come out of it...

I have been shoping.. I bring home broken fender 212r and i will change him in something else, something better,something with vacuum tubes.. LoL..

Second chassis build will be with 12"inch speaker. Chassis i bend for it was difficult as its tight space but i did it clean. This one is going to be copy of Mesa Boogie Mark1 with reverb. Im thinking not sure 50 oor 100watt. Now im sorry fof delays but i work a lot and dont have much free time for ...

First chassis bend so it fits the box perfect . This one is with 10" speaker "wich will be changed for higher wattage Eminence.. Chassis i bend from 1.mm steel plate..ps-its good workout for me . This will be copy of Dumble overdrive special.. 50watts rms is enaugh..

The fun has started.. I use donor guitars boxes from 10" and 12" fender amps for first two projects and here you can see the Japanese metal plate bender i use to make new chassis..

Ok now i will start with informing you how is the progress going.. I looked today the schematics and i found for OVERDRIVE REVERB some mistakes in schematics, not a big ones but are there.. Will be cheking out soon. And for SSS Dumble schematics, hmmm i found allso some things wich are not suppose t...