One of the guitarists in my church band recently got a Carr Mercury, which is a great little amp. In addition to sporting vintage styling, it has some great power scaling from 8 Watts down to 1/10 Watt, a three-position boost to vary the drive to the single EL34 power tube, and a very nice and liquid reverb. All in all, it sounds pretty killer. Add my bandmate’s Barron Wesley custom guitar, and it’s a great tone combo!
But as he plays next to my rig, which consists of a Les Paul going into an Aracom PLX18BB Trem (“PLX”) which is a clone of the very simple Marshall 18 Watt Plexi, I felt the Carr’s tone paled in comparison to the tone my rig produces. Mind you, the Carr sounds killer. But in comparison to the PLX, its attack is much faster, and there’s noticeably less sag from rectifier than the PLX, so my perception is that there’s not much sustain with the amp..
Granted, I realize this is purely subjective, but there is something very special about the PLX. Perhaps it’s due to that classic “Bluebreaker” tone – hence the BB designation of the amp – that Clapton made so popular while with John Mayall and the Bluesbreakers. The Les Paul/Plexi combination is absolutely magical. Perhaps it’s also due in part to the absolute simplicity of the 18 Watt Plexi’s circuitry. Or perhaps it’s due to how the amp sags that gives it this almost reverb-like tone. Whatever it is, it’s a tone with which I completely identify.
I realize that I probably mention the PLX in this blog more than any amp that I have or have tested. But it has become my “go-to” amp. As the title of this article says, some rig combinations just never get old.
In front of the PLX, I have just a few pedals because I like to keep things simple. Here’s the complete chain:
Les Paul R8 -> Timmy Overdrive -> TC Electronic Corona Chorus -> Mad Professor Deep Blue Delay (handwired) -> DigiTech RV-7 Reverb -> Aracom PLX18 BB Trem -> Aracom PRX150 Attenuator -> Fane Medusa 150 12″ speaker.
I typically only use the delay and reverb when playing clean, which is actually quite a bit. But when I’m playing driven, either with the Timmy or with the amp cranked, I just let the amp speak for itself.
I mentioned the sag of the PLX. It’s not so saggy that you get a lot of crosstones. But Jeff Aragaki (amp builder) did find a sweet spot in setting up the rectifier that balanced the classic responsiveness of the original Plexi with enough sag in the rectifier to make the amp absolutely expressive.
I made some modifications of my own in the way of tubes. I have gorgeous 1959 RCA grey glass pre-amp tubes in it to drive the pre-amp. I actually kept the original JJ EL84 power tubes in the amp because they compress quite nicely when driven without over-compressing into mush. Then to add fatness, I dropped in the gorgeous, super-sensitive (103 dB) Fane Medusa 150 12″ speaker. Combine that with a large 1 X 12 combo cabinet, and you’ve got a nice resonating chamber for the speaker which adds further depth to the tone.
Upon writing the above, I think a huge reason why I love the tone of this amp so much as compared to the Carr probably has a lot to do with the size of the cabinet, which can also easily house 2 10″ speakers. That extra room for the sound to bounce around creates a lot of complexity.
In any case, that particular combination of gear never gets old to me. Even though I have lott of other guitars and amps, when I gig, I go to that setup. Now if only Jeff will build me my FlexPlex 50…