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KSR Amplification / Rhodes Amplification, LLC Cincinnati, Ohio http://ksramps.com
Lit Logo
The unique backlit KSR logo conveys various information based on its color and if/how it blinks.
• Off: True-bypass
• Yellow: Buffered bypass
• Green: Clean channel
• Blue: Rhythm channel
• White: Lead channel
• Red: Blinks red X number of times upon power up to indicate firmware version – e.g. one blink =
version 1
• Purple: Flashes in purple when muted in true-bypass mode, otherwise flash is in color of current
channel/mode.
Internal Jumpers
Overview
By removing the back cover, you can access some internal jumper settings. Please exercise caution whenever
touching the internal electronics. Static electricity will damage these sensitive components, and discharging
yourself by touching something grounded first is always good practice.
Logo Brightness
There are two brightness settings for the KSR logo. The Ceres ships with the Normal brightness selected by
default. The Bright setting can be selected for better visibility during outdoor performances. Note that this
setting uses more power, but consumption should still be below 200 mA max.
Ultra-Tight
There are two jumpers for setting the Rhythm and/or Lead channel to the Ultra-Tight mode. This is handy for
use with power amps that have an inherent bass boost and you find the Ceres to sound too “boomy” in the
low-end. We ship the Ceres with these jumpers open, thus enhancing the bass output. To enable Ultra-Tight,
short the two top pins for the Rhythm channel, and the two bottom pins for the Lead channel.
Specifications
• Power Input: 9Vdc @ 200 mA max. Center-negative 2mm pin, 6mm barrel style connector. Note:
Exceeding ~9.7V will shutdown the pedal to prevent damage to internal circuitry.
• Input Impedance: 1MΩ
• Output Impedance: ~ 25KΩ
• External Control Input: 1/8” (3.5mm) TRS (tip/ring/sleeve) jack. Dry (relay) contact only!
• Toggle switches: 7 total -- 5x 3-way and 2x 2-way
• Potentiometers: 12 total -- Gain/Bass/Middle/Treble/Level for Rhythm/Lead channels, plus Clean
Tone/Level.
• Buttons: 2 total -- Bypass (left) and Rhythm/Lead (right)
• Indicator Lights: KSR logo backlit via 2x RGB LEDs
• Dimensions Overall: 5.75” wide x 4.75” deep x 2.375” tall (146 mm x 121 mm x 60mm)
• Weight: 1.3 lbs. (0.59 kg)
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