By Yseult Herve. wiring. Published at Tuesday, March 26th, 2019 - 18:37:40 PM.
Having a master tone and two separate volume controls in a dual-humbucker—aka HH—configuration is nothing new. In fact, it’s widely used by such companies as Ibanez, Schecter, and Charvel. Cap and trade. The basics of this wiring are easy, as you see in Fig. 1. Again, each of the pickups has a dedicated volume control, yet they share one common tone control. Because it’s not possible to use different tone caps for each pickup with this wiring, you have to decide what tone cap will work best for both pickups. For most factory stock wirings like this, the value is 0.022 µF. But in a HH configuration, many players like the classic 0.022 µF for the bridge pickup and a 0.01 µF tone cap for the neck pickup, so a practical compromise is a value of 0.015 µf.
Some manufacturers, he said, don’t seem to listen much to people in the field who actually install and service the equipment. ”They have their own engineers” and are more likely to listen to them. However, according to Porter, ”the guy in the field has a better idea of what is needed in the field.” Many air conditioning dealers he knew were not satisfied with the products available. Porter said he was encouraged to try his hand at inventing by other dealers, many of whom said, ”You build a better mousetrap and we will buy it.”
Being able to efficiently interpret ladder (line) diagrams is an important part of electrically troubleshooting many HVACR systems. These diagrams are drawn in such a format that it is quite easy to understand the electrical configuration of the system. The ease in reading these diagrams is accomplished by drawing each load and any switches that control that load on a separate horizontal line. For example, if a load is not energized when it should, a technician should be able to easily identify which switch or switches control that load and then start to troubleshoot the cause. Ladder diagrams are also drawn with other helpful identifiers to aid a technician in electrically troubleshooting a system.
But you can also choose a more radical configuration. For instance, how about a very small 6800 pF silver mica cap for the bridge pickup—thus converting the bridge tone pot into a “warmth control” that will yield a super-sharp, contoured solo sound—in combination with a 0.033 µF paper-in-oil cap for the neck pickup. The latter would let you dial in deep, classic jazz tones or a warm rhythm sound. You can have a lot of fun experimenting to find a combination that works best for you. Another benefit of this wiring is its “preset” function. You can dial in two completely different tones, as in the example above, and engage either with only a flip of the 3-way pickup selector switch.
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