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http://www.blueguitar.org/new/text/tq-40w.pdf
David Boze
The Versatile Fender Vibrolux Reverb
The Fender Vibrolux Reverb is one of my personal favorites (Blackface in this case—circa 1965 through 1967—but a converted
Silverface model will work the same). If I had to recommend just one amp to a player, this would be the one. First, it’s 35 friendly
watts (two 6L6 power tubes). That’s plenty of power to produce great lows and low mids when you need them. Second, it has a
5AR4 rectifier tube, which provides adequate sag and natural compression to help give you a nice hard attack and improve
overall sustain. Third, it has two decent sized 10" speakers, which are desirable for two reasons; you’ll love the crunch of 10"
speakers at higher volumes, and you’ll be pushing more air with two speakers, providing more headroom than a single 12", while
not moving the volume of air as a much louder Super Reverb with four 10"s. Some claim that the output transformer in a Vibrolux
Reverb is a bit wimpy, and to a point that is true; however for smaller gigs, what makes the bottom end sometimes seem a little
loose also makes your highs and leads sing brilliantly. So there is a trade off, but the overall sound of a stock blackface Vibrolux
Reverb is outstanding. Your tone will also benefit from having a great pair of speakers in this amp (a subject for later articles). I
find Jensen C10Ns in particular, to be excellent.
Crank It!
The key to great tone at a show is to run your amp fairly full to bring the most out of it. To me, a Fender doesn’t begin to find its
voice until just past "5", into the "6" range on the volume control. I also run the treble fairly high, the bass somewhat high as well,
with reverb on about "3" or so, and the "bright" switch off. I prefer the "effects" or second channel because I love the sound of
Fender reverb, but I also use the second channel since it has one more stage of gain in the pre-amp. And remember, that’s
where all of your tone and harmonics are defined. The harder you hit the power section with a hot signal, the better the
harmonics and tone will be. The Vibrolux Reverb will certainly take you where you want to go in the search for tone, but, I repeat,
you’ll have to run it at "5" or higher, and try boosting those highs and lows with your treble and bass controls. Doing so adds a
lot. At louder volumes, you may notice a bit of looseness in the bottom end. That’s characteristic of these amps and it’s related to
the size of the output transformer, but it’s still a very versatile amp.
http://fenderguru.com/amps/vibrolux/
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