1959 Tweed Bassman – Part ||

Part 2, Assembly:

The chassis is finished off in chrome and for an added bit of protection I cleaned and polished the chassis with automotive chrome cleaner. 1959 Bassman Kit - Great Mix Recording Start by mounting all the hardware pieces to the chassis. The three transformers, pots, jacks, switches, fuse holder and tube sockets.

Start with the transformers, wires should be twisted for minimal hum noise. Next, install the potentiometers in their proper location. TIP! Use a nut driver to tighten the nuts. This will prevent you from scratching the finish. Lock washer on the bottom, regular washer on top then the nut. Sizes for drivers are 1/2”, 7/16” and 11/32”. The power and standby switches only mount one way. Tighten the nut on the backside of the chassis rather than the finish nut. Position the ground switch as seen in the image. Install the tube sockets with the same orientation in each of the locations. TIP! After installing the sockets, mark the pin out on the chassis to help in wiring. The installation manual is pretty loose as to where/how things get mounted and wired. So having experience with electronics is a big plus with this kit. 1959 Bassman Kit - Great Mix Recording I also used images of old Tweed’s to help me with wiring.

The kit does not come with tube hold-downs. I bought some tube covers for the small tubes and Fender style clamp hold-downs for the 2 power tubes and the rectifier. One other addition I did was to use Loctite on the screws for the tube and transformers.
1959 Bassman Kit - Great Mix Recording
1959 Bassman Kit - Great Mix Recording
Stay tuned for more to come on this exciting project!

. Record . Mix . Master . Music .

1959 Tweed Bassman – Part |

Hi boys and girls. I have a new project that I am very excited about. Ever since I have been involved in electronics I never once built an electronic kit of any sorts. Of late I have been dabbling in tube guitar amp repair/modding with my good friend Kris and discovering how great older tube Fender amps can sound. During this time I have discovered that one of the “holy grail” of amps is the 1959 Tweed Bassman.

This type of amp is currently selling in the neighborhood of $4000 so buying/trying one out is a bit prohibited. But, I have found a company that makes a kit that you can build with the same circuit and cabinet design that Fender used all those years ago. My kit has arrived and I am going to blog about the build of a 1959 Tweed Bassman with the 5F6-A circuit and my own idea of what tubes to use.

Part 1, The Kit:

The kit I am using is from MojoTone. ( http://www.mojotone.com/amp-parts/amp-kits-tweed-style/Tweed-Bassman-Style-Amplifier-Kit#.Ug2OfFPsqGo ) I decided that I would use the recommended speakers as they most closely match what would have been used in the original Bassman. I ordered the kit without tubes as I did not agree with Mojotone as to the tubes they recommended. I will elaborate on this in a later post. Suffice to say that I will be using a mixture of new and old tubes to give me the vintage sound that this amp is capable of. The kit shipped complete with the exception of the cabinet as this is made as needed. Which is quite ok as it will take me some time to build and document this project. The cab will ship in about 30 days. After receiving the kit I went through the parts and verified with the included list and found that it did not include tube covers for the pre-amp tubes or hold-downs for the power and rectifier tubes. Bummer! So, back to the internet and ordered some cool colored tube sleeves for the 3 pre-amp tubes and some Fender style clamp units for the power tubes. It was nice that all the small parts came in parts cases with a corresponding list attached to the underside of the lid. Very nice!

A side note: This kit is not recommended for people who barely know how to use a soldering iron and are not familiar with reading a schematic diagram. Tube guitar amps have very high voltages that can KILL you if you do not know what you are doing.

1959 Bassman Kit - Great Mix Recording

Stay tuned for more to come on this exciting project!

. Record . Mix . Master . Music .
Related Posts Plugin for WordPress, Blogger...