Controls & Features
Your Seymour Duncan A E C preamplifier has a wide range of useful features for
getting the best sound out of your acoustic guitar and making the preamplifier
extremely versatile in all types of performing and recording applications.
Balanced Line Out
- This output is for Direct Input into a mixer or recording console.
This output is derived from a low noise, wide bandwidth transformer. With a nominal
1OOmV input signal, the output level is -20 dBm or - 14 dBm depending on which input
jack you use. When phantom power is present, the AEC automatically switches from
battery to phantom power and lights a green LED on the front.
9 Volt Battery Eliminator Input - Plug in a standard 9 Volt battery eliminator with a 2.1
millimeter plug. Current consumption is less than 1.5 milliamps. The shell is positive.
Check this out before you plug in. Some battery eliminators are the opposite polarity.
The AEC is internally protected against damage from reverse polarity. It just won't work.
Line Level Output
- Use this 1/4" output to directly drive a power amplifier to full power.
This output may be used simultaneously with the instrument level output. Either or both
outputs can be used depending on the demands of the playing situation.
Instrument Level Output
- Use this 1/4" output to play a combo amplifier or any other
high gain unbalanced input. This output can also be plugged into a tuner, an effects unit,
or used as monitors send.
Instrument Inputs
- The instrument inputs are ultra high-impedance (5 Megohms). The
very high impedance of the instrument inputs allows for better impedance matching with
piezo-crystal and piezo-vinyl acoustic pickups, which characteristically have very high
output impedances. When the input impedance of an amplifier is much lower than the
output impedance of the pickup, the pickup may sound tinny and brittle. One of these
inputs is 6 dB hotter than the other for use with low output pickups.
