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The SEB Series is a cost-effective preamp solution for any instrument equipped with magnetic or piezo transducer pickups. With a +/- 12dB range for either two (treble/bass) or three (treble/middle/bass) bands of equalization, they are ready to install and will bring your passive pickups to life. Features include JS brass shaft potentiometers and a balance potentiometer with a NO SOLDERterminal block for neck and bridge (N-GND-B) pickup connection. Simply remove the balance potentiometer for single pickup or pickup selector switch applications.
SEB-AB - concentric (stacked) treble/bass potentiometer to reduce the number of controls
SEB-B - individual brass shaft potentiometers for longer life and smoother control
The SEB Series features a gain trim potentiometer mounted right on the circuit board (small blue cube) so you can make signal level adjustments based on the pickup(s) being used. The circuit board is 45L X 25W X 10D mm (1 3/4" X 1" X 7/8") so it requires minimal cavity space. Manufactured using Surface Mount Technology (SMT), it is mounted in a plastic case and covered in epoxy to prevent damage as well as secure the wiring. Top quality components and meticulous soldering ensures noise free performance. The plastic case also includes an adhesive pad for secure mounting. Powered by a 9V alkaline battery (not included) the circuit can handle up to 18V (2-9V in series) for increased headroom. The preamp will work with as little as 6V which gives you plenty of time before having to change the battery.
We suggest using pickups with similar outputs, either magnetic or piezoelectric, but not both together since the balance (blend) function is passive. Our preamps were designed for use and work best with passive pickups. Although active pickups can be used we believe a preamp'ed signal going into another preamp is overkill and creates the opportunity for low level noise especially during recording. Also most active pickups have a low impedance output and the SEB Series is designed with a high impedance input.
SEB-2AB (3 potentiometers) balance~volume~treble/bass
SEB2-B (4 potentiometers) balance~volume~treble~bass
SEB3-AB (4 potentiometers) balance~volume~treble/bass~middle
SEB3-B (5 potentiometers) balance~volume~treble~middle~bass
Bass: +/-12 dB at 100 Hz
Middle +/- 12dB at 800 Hz (SEB3)
Treble: +/-12 dB at 4 kHz
Input Impedance: 1Mohm
Balance: MN500K w/center detent
Current: 0.16 mA
Voltage range: 6 ~ 22 volt
Battery Requirement: 9V alkaline (battery life 1000+ hours)
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