I almost always play small combo amps of 20 watts or less. But I wanted something with a bit more clean headroom for a possible upcoming project — and to demo my stompboxes. I’ve always enjoyed playing JTM-45s when I’ve reviewed them for guitar mags, so I ordered Monotone’s British 45 kit.
I’d previously had a great experience building Mojotone’s Marshall 18 watt clone kit when I reviewed it for Premier Guitar a couple of years ago. It turned out great, and I use it regularly.
Mojotone provides high quality parts, nearly labelled and organized in plastic compartmented boxes. But beware: The company provides no build instructions — just a layout diagram and a schematic. You need amp building experience or help from an expert. Click play for a slideshow about he build:
This is Mojotone's new offset head cabinet. (The amp chassis first in other Mojotone cabinets as well.)
The two power tubes can be either EL-34s or KT-66s. (I chose the latter, just for a new experience.)
The parts come neatly labeled and organized in plastic bins — a BIG help!
Warning: the kit includes no build instructions — just this layout diagram and a schematic.
I ALMOST managed to assemble it, but I needed a rescue at the end. (Thanks to Bruce Clement of BC Audio, a brilliant boutique builder here in San Francisco.)
Mojotone supplies their own branded transformers (which sound fab).
It's a turret board build. (The board and turrets are pre-made, as opposed to some kits, which require you to insert the turrets yourself.)
This is probably not a good first build — maybe start with a nice little tweed Champ kit?
The a plexi faceplate, which I left omitted. I also substituted my own knobs.
I nearly made it through myself. (Translation: I soldered everything together and it didn’t work.) So I had to hire Bruce Clement of BC Audio here in San Francisco to rescue me. (Bonus: Bruce loaned me one of his JTX50 heads. Man, it’s one of the best-sounding Marshall derivatives I’ve ever heard. It’s among his Octal-Plex series amps, which use octal preamp tubes in Marshall-inspired designs.)
I’d like to call out several items of interest in the November issue or Premier Guitar. The first one is personal: As head honcho Shawn Hammond mentions in his monthly editor’s letter, I’m changing roles at the magazine. After two years as a part-time senior editor, I’m going part-part-time as a contributing editor.
It was a tough call for me — it was a fun gig working with awesome people on subjects I love. But I’ve felt an increasing need to dedicate more time to my own projects: playing, recording, writing, developing gear, and trying to make my tonefiend.com blog and YouTube channel seem a bit livelier than something you’d encounter at Urban Ghosts. (It’s one of my favorite websites, but not the attitude I’m aiming for here.)
If you’ve enjoyed the articles I’ve contributed to PG, well, first of all, thanks! And second, note that I’ll actually be contributing more columns and reviews than before. That may sound contrary to the laws of physics, but it’s possible because I will no longer be editing material by other writers. (I’d been processing an average of 35 stories per month in addition to my bylined pieces.) Picking up the slack will be new hire Ted Drozdowski, a fine writer and player, a lovely guy, and one of the music journalists I looked up to when I got into the guitar mag racket decades ago. (Ted was part of the now-legendary Musician magazine of the ’80s and ’90s.) Meanwhile, I’ll be contributing my Recording Guitarist column and at least three major gear reviews per issue.
Also in the issue are several tech-oriented pieces that I found particularly interesting. My old pal Frank Falbo — a leading pickup designer and master luthier — contributed a great piece on pot and capacitor substitutions. More than anything I’ve read, Frank’s article nails down exactly what changes to expect when swapping out part values, documented via audio files.
For me, the most fascinating part is how varying tone-pot values change your guitar’s tone, even when the tone knob is wide-open. Yeah, a lot of us would expect some change, because pots of varying resistances exert different loads on your pickups. But as far as I know, no one has ever nailed down the exact differences the way Frank has.
Others generalize. Frank Falbo nails it down.
Spoiler alert: The differences are massive — it’s a far bigger deal than I’d always assumed. Check out Frank’s first set of sound clips and prepare to be impressed.
It’s not a new idea that you can shift the overall tone of a guitar “bright-ward” or “dark-ward” by swapping pots, but Frank makes explicit how dramatic such changes can be, and what to expect from the likeliest substitutions.
I also learned much from two articles I wrote. The first is a shootout between five sets of ultra-vintage-style Strat replacement pickups, featuring models by Amalfitano, Fender, Klein, Manlius, and Mojotone. (Spoiler alert #2: They all sound pretty great, though the Kleins and Mojotones were my personal faves.)
I only realized after evaluating tones that the two sets I loved most don’t deploy a hotter pickup in the bridge position, while the other three do. (I don’t mean some blazing-hot bridge pickup, but one just a tasteful tad louder than the others, an approach many Strat players seem to love.) In the Klein and Mojotone sets, the middle pickup is loudest. Food for thought.
There are good reasons why few guitar mags run serious pickups reviews, and almost never compare models directly: It’s labor-intensive, and it’s damned hard to establish a level playing field. Here, I tried to remove as many variables as possible, installing all the pickups in the same test guitar, scrupulously measuring everything from pickup height to mic position, and laboring mightily to create identical demo performances for each set. My favorite part appears on the final page of the article, where you can directly compare each pickup from each manufacturer side-by-side.
This poor pink Strat got one hell of a workout.
Finally, you might find interesting the audio clips in my latest Recording Guitarist column. It’s about is direct recording, a topic I’ve been covering since this blog began. I got cool sounds using a JHS Colour Box (a dumbed-down Neve channel in stompbox form) and especially with the Neve preamp simulations in the latest Universal Audio software. I’m hardly the first to point this out, but wow! Some recent plug-ins are so stupefyingly realistic that they can mimic analog gear pushed to extremes — a longstanding weak link in faux-analog plug-ins. I found it easy to create cool and compelling sounds without amps or amp simulators. Let me know what you think.
Okay, now I’m nodding off from jet lag. I just returned from a two-week trip to Italy, which generated some interesting musical thoughts and discoveries that I’ll share here soon. 🙂
I had a blast building and testing two Marshall 18-watt kits for a Premier Guitar story — and I emerged with new respect for this cool 1965 design.
These mini-Marshalls were neglected in their day, but are now treasured. The oft-heard claim that they provide plexi tones at reasonable volumes is only partially true — these are open-backed combos powered by a Vox-like pair of EL-84s tubes. But while they have roughy the same horsepower as the era’s Fender Deluxe and Vox AC15, their tone is undeniably ’60s Marshall. In the studio, they sound far larger than their actual size. And out of the studio, they’re still pretty darn loud.
I’ve never seen three 18-watts in the same place before.
Even though the Mojotone and Tube Depot kits I built share the same schematic (and identical cabinets, both made by Mojotone), the build experiences and final results differed greatly.
And just when I thought I’d scaled the Everest of 18-watt ecstasy, I get a real Marshall 18-watt reissue for an upcoming Premier Guitar review. Stay tuned.
Are any of you guys 18-watt fans? Any observations to share?
