REX Microphone Preamplifier Pedal / EQ / Boost Owner’s Manual Rev. A Grace Design, PO BOX 1812, Lyons, CO 80540 303.823.8100 / info@gracedesign.com www.gracedesign.
Contents 1 2 3 4 5 6 Welcome Safety and Symbols Features Top Panel Controls Rear Panel Connectors Unpacking and Installing 6.1 6.2 6.3 6.4 6.5 6.6 7 Installing XLR Microphone Input Insert Send And Return (Fx Loop) AMP Out DI Output 9VDC Power Input Operation 2 2 2 3 3 3 3 4 4 4 4 4 4 7.1 7.2 7.3 7.4 7.5 7.6 7.
4 Top Panel Controls 1 2 3 MIC IN 4 5 SEND RETURN 6 7 8 DI OUT LINE OUT ISO I 0 0 0 GND +48V -10 +10 -10 +10 BOOST HIGH LOW GAIN 0 +10 HPF 1. 48V phantom power switch 2. GAIN control 3. LED signal level indicator 4. LOW EQ control 5. HIGH EQ control 6. BOOST level control 7. LED power indicator 8. OUTPUT ground / ISO switch 9. HPF switch MUTE BOOST REX 10. BOOST footswitch MICROPHONE PREAMP 11. BOOST active LED 12. MUTE active LED 9 10 11 12 13.
that preserves access to the microphone input and the XLR DI output, as they may need to be plugged and re-plugged on a nightly basis. mono outboard signal processing to be placed in series with the signal, while still utilizing all of REX’s output capabilities. They are 1/4” TS jacks each wired tip signal, sleeve ground. If you wish to connect just a tuner to the REX, you may connect the SEND to your tuner’s input and leave the RETURN disconnected.
GAIN As with all EQ settings, the more you know about what your instrument needs the better off you will be making adjustments on the fly. We recommend you get to know these controls and experiment a lot with them to find what works best. LOW SHELF EQ +15dB 0dB -15dB 40 20k 125 Hz 7.5 BOOST 7.4 HIGH EQ The High control of the REX is fixed with a 2kHz corner frequency, with a gain range of -10 to +10dB.
9 Specifications GAIN RANGE Mic In, Line Out, Boost 0dB +7dB to +57dB Mic In, Line Out, Boost 12.47dB +20.0dB to +69dB Mic IN, DI Out, Boost 0dB -21dB to +28dB Mic IN, DI Out, Boost 12.47dB -9dB to +41dB Boost 0-10dB THD+N 1kHz, 22Hz-22kHz BW (MIC Input to Line Output) @ 20dB Gain Line out +10dBu < -95dB DI out -18.8dB < -80dB @ 40dB Gain Line out +10dBu < -90dB DI out -18.8dB < -80dB @ 57dB Gain Line out +10dBu < -81dB DI out -18.
10 Cleaning and Care Your REX chassis is constructed out of high quality aluminum and steel. Under normal circumstances, very little maintenance is required to keep it looking good. However, if you find it getting more dirty or dusty than you like, here are some cleaning tips: We recommend using a little shot of Windex™ applied to a clean, dry, lint free cloth. Gently wipe all surfaces, taking care not to allow the cleaning product to build up around or under the knobs.
