1978 Peavey T60

1978 Peavey T60

1978 is first year for this model and with the body being made from solid ash can be real back breakers. But this one weighs in at a hair under 10 lbs making it a light one! Its in very good condition for its years and comes in its original Peavey ABS hard shell case. I have always quite liked the look of these and were quite prominent back in the day.

The guitar is loaded with two epoxy-potted four-conductor “full-range” humbuckers with a blade design, aka Super Ferrite pickups. They were covered with Rick-style toaster design pickup covers, had standard PAF dimensions, and were designed to sound good as humbuckers and single-coils when in split mode.The wiring was really ahead of its time back in 1978, sporting out-of-phase and coil-split options, but in a very special way.

Basically, the original wiring is using a 3-way pickup selector switch (in this case a DPDT on-on-on type) for a Les Paul-style switching with both pickups together in parallel in the middle position. Next there is a DPDT on-on switch, serving as an out-of-phase switch for the bridge pickup, and a 250k volume and tone control for each pickup, á la Les Paul but independent from the other pickup’s circuit. The volume controls both have a “cap only” treble-bleed network to keep the high-end alive when rolling down the volume. The value for the T-60 guitar was 1000 pF and for the T-40 bass 0.01 uF. Besides this, the wirings are absolutely the same. The tone controls have a 0.033 uF tone cap for the bridge and a 0.022 uF tone cap for the neck pickup.

So far, this is nothing special in the year 2021, but let’s take a closer look at the tone controls. Here we find a mixture of a tone blend and a coil blend feature. On one side a capacitor is blended to ground (tone blend) while on the other side one of the coils is blended to ground (coil blend). Since the out-of-phase switch is still in front of the coil blend feature, you can choose, depending on the position of the switch, which of the two coils is blended to ground. Here is the description of the circuit in Peavey’s own words from the original manual of the guitar: “Our unique tone circuitry enables dual- or single-coil operation of each pickup independently through the rotation of the pickup tone controls. Rotating the tone controls fully clockwise (position #10) achieves the single-coil mode and produces a greater degree of “highs” from the instrument. Rotating the tone controls counterclockwise to approximately the #7 position brings the second coil into operation for full-range, humbucking tonalities. Further counterclockwise rotation of the tone controls (from position #7 to 0) yield conventional tone-contouring action.”

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