This 5 pin layout is the same for all emg accessories so they can be interchanged. Often the volume control is closer to the pickups than the bts control making it difficult to wire the instrument.

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Emg bts wiring diagram. Often the broader single pole filters are preferred for musical instruments because they are less selective easier on the ear and sound more musical. The bts control is easily installed by using the connector cables supplied. Simply use some needle nose pliers pull out the v header and solder the red wire from the pickups to any of the pins and then re insert the header into the housing. 2 bts system page 4. Diagram 8 1 3 soldering to the battery buss. Btc controls and systems are the most widely used bass eq systems in the world.
2 bts system page 4. If you are using emg hz passive pickups or othe. Listing of emg top 10 active pickup wiring diagrams for emg 81 85 89 s sa zakk wylde bass pickups and spc exg eq circuits. Electric guitar pickups bass guitar pickups acoustic guitar pickups and accessories emg active passive pickups over 25 years of active pickup technology the original active pickup. It comes complete with knobs including 2 extra volume knobs. Diagram 1 shows the cables connected to the bts control.
The bts features single pole filters for broadband equalization. It takes up very little space and will work with any pickup active or passive. The bts control is a 2 band equalizer for bass guitar. Approximately 12db of cut and boost are available for bass and treble and all controls. It includes an active balance control that allows for loss free balance between two pickups and has a center detent for the middle position. Simply use some needle nose pliers pull out the v header and solder the red wire from the pickups to any of the pins and then re insert the header into the housing.
If your instrument has an older emg pickup you can solder the pickup red wire to the buss. One of the features of the bts control is a 2 position dip switch that controls the slope of the high frequency. The bts system is a complete control system for emg bass pickups. Diagram 8 1 3 soldering to the battery buss. It is preferrable to have the master volume control last in the signal chain before the output jack. The additional controls are a 2 band equalizer for bass and treble that features single pole filters for broadband equalization.
If your instrument has an older emg pickup you can solder the pickup red wire to the buss. It includes an active balance control which features buffered inputs for a higher impedance pickups. Often the broader single pole filters are preferred for musical instruments. The btc control features a bass and treble equalizer on a concentric stacked pot. Below is a diagram of the typical wiring order of the controls. There are a variety of ways instruments can be wired.
The bts system hz is a complete control system for passive pickups or emg hz bass pickups.