I built an Amp! BYOC Champ.

GAD

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After building a bunch of great sounding BYOC pedals, I decided to tackle the Champlifier. Here's the starting pile from the BYOC website:

champgroupoweb-600x367.jpg


I like the turret board, but those turrets take a while to heat up with my iron due to the iron's small chisel point. I like it better than trying to jam six leads into a single eyelet though. Here's the included board:

TurretBoard-800.jpg


Here are a couple of midway shots:

Partial-800.jpg


Partial-2.jpg


The instructions are fantastic. Only once was I frustrated - the last step had me soldering in a spot that was very hard to get to, but I persevered and overcame.

As others have noted, if you want to learn amp theory, this kit won't teach you that. This kit is like building a Lego set - if you follow instructions well, and know how to use the proper tools, you'll get the desired results. Just as building a Lego house won't teach you how to be an architect, this kit won't teach you to be an amp designer. For example, unless you know something about electronics (and trust me, I am no EE!), you'd never stop to think that an exposed wire or solder blob from the turret board might short out on the exposed chassis.

That doesn't mean that the kit is unsafe IMO. There are many warnings about voltage and electrocution at the proper points in the directions. I just think that an insulation layer was a better idea.

That said, I recommend that anyone who wonders why boutique amps cost so much money should build an amp kit. I love doing this stuff, and I have a fair amount of experience with a soldering iron. Still, this build took me the better part of a weekend to complete. Sure, I'm anal and like all the wires to be the right length and the labels on the components to show, but isn't that the kind of work we'd expect from a boutique builder? Sure, with more builds, my speed would increase, but I learned that hand-wiring an amp is a time consuming process. If I charged my normal consulting rate to build this amp, the end result, including components, would cost over $2,000! Cut that in half and it's still a boatload of money for a Champ.

One of the things I don't like about the kit is that the back of the turret board is uninsulated from the chassis. I'd read this online while researching the kit, so I ordered a blank insulating card from Mojotone to use as a barrier, similar to the way my Bassman is built. I had to trim it to fit, and drill holes for the mounting screws, but it worked perfectly:

Bottom-800.jpg



One other note - I ordered a different colored jewel for the lamp from Mojotone, but the threads don't match. I did not expect that, and I'm not sure why it's the case, but there you go.

Here's the final gut shot:

Final-Guts-800.jpg



And here's the amp being tested on my non-conductive, flame-retardent garage floor. :)

Why isn't it in the cabinet? Because Mojotone still hasn't shipped my cabinet a month after I ordered it. They tell me it should ship this week, but I just couldn't wait to test it. Even open, on the floor, it sounds great! No sparks, no smoke - just great tone. I can't wait to hear it in a nice lacquered pine cab!

Test-800.jpg
 

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Normally the turret board amps don't have or need insulation, but I can see why you would feel more comfortable with one in place. Nice job! :mrgreen:
 

GAD

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Re: I built an Amp! BYOC Champ

Finally got the cabinet and got it all put together. I scored a vintage looking badge on Ebay that says "Champ" in Fender-like script. Mounted it all, put the badge on, and started rocking.

It's a little dark sounding in the enclosure, but I hear that's normal. It's a GREAT sounding amp though. Even overdriven I'm impressed at how good it sounds.

I grew up around Fender black and silverface amps, and never dug them. When I got my '63 Bassman, I was blown away by the tone. This one makes me want a Tweed Deluxe. I'll definitely have to build that next!

The Mojotone cabinet is fabulous. Not a flaw on it. Worth every penny.

Here are some pics of the completed build:

Mojo-Champ-Empty-800.jpg



GAD-Champ-Back-800.jpg



GAD-Champ-Front-800.jpg



Champ-Badge-800.jpg
 

GAD

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FNG said:
Nice job, GAD. I'm guessing this is the company? http://www.mojotone.com/

When you gonna post some sound or video clips??

Yes - Mojotone is the place where I got the cab. Took about a month to get it, but it's stellar.

I've been chasing rattles since I put it together. :) I'll think about a tone clip next.
 

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Nice thread and sweet amp! I'd like to build one of those sometime and maybe try it in a tweed Deluxe-size cab with a 12" speaker. I've built the Mission amps tweed Deluxe kit and used Clark for the cabinet. Not sure if they still sell cabs.

Good job on the wiring, nice and neat! But make sure your 68k input resistors (right side of the board) are connected - it's hard to tell from the pic if there's any solder at that turret.
 
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