By Clarissa Nadeau. Guitar Electric. Published at Friday, August 31st, 2018 - 07:02:57 AM.
The second common OEM tube out there is the Chinese Shuguang 12AX7 (Groove Tubes also sells this tube as the 12AX7C; Tube Amp Doctor has also sold this tube as a TAD 7025; and it has also been sold by Mesa Boogie). The Chinese 12ax7's are constructed with short, fat plates, like the Sovteks, but they have an extra spacer above the tubes, a big nickel colored brace connecting the plates, and a "halo" getter on top. Again, if you see a tube made like this, it's a Chinese tube, regardless of whether it has Groove Tubes or Mesa Boogie or TAD written on the glass. These tubes have a warmer tone than the Sovteks and more gain (volume). As a result, they work well in high gain amps.
Guitar Wiring Explored – Switches Part 2. In this article we look at a new kind of toggle switch – the "onoffon" switch. Having understood that, we look at how we can use this switch to split a humbucker to either coil, or use it as a regular humbucker, all on the same switch.
I think a better way to solve the hum issue is to get a reverse wound reverse polarity (rwrp) middle pickup (Fender Custom Shop Fat 50's have a rwrp middle pickup). That way, if you have a Stratocaster, for example, you will have single coil tone in positions 1, 3 and 5, but you will have no hum in positions 2 and 4. Alternatively, if you have a Les Paul, you could get humbuckers that allow you to split the coils, so that you can convert each humbucker to a single coil with the flip of a switch (Seymour Duncan JB Model humbuckers have four conductor leads, so you can use them with a coil splitting switch). Either way, you can get the best of both worlds.
Here's how you can get this effect: Set the neck pickup volume knob all the way down to zero. Set the bridge pickup volume knob all the way to maximum. Keep all tone controls on maximum. Then you do the following: Set your pickup selector switch to Treble (the bridge position). Play a note or a chord and let it ring out. While it's ringing out, flick the pickup selector switch back and forth between Rhythm and Treble. You will hear the sound cut in and out crisply. This is because when you switch to the Rhythm pickup, there is "no sound there" because its volume knob is all the way down to zero. When you switch the pickup switch back to Treble, the sound instantly goes back to full volume.
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