Gamma Cumulus 3-Way Reverb Effects Pedal Owner’s Manual

: June 11, 2024
: Gamma

Table of Contents

FEATURES
SPECIFICATIONS
Overview
CUSTOMER SUPPORT & SERVICE
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

**Gamma Cumulus 3-Way Reverb Effects Pedal Owner’s Manual

**

Your GAMMA SERIES Cumulus 3-Way Reverb from Acoustic Control Corporation allows you to add inspiring ambience to your guitar sound, with a choice of three classic flavors of reverb. Studio emulates a crafted recording studio space, with a well controlled decay that avoids muddying up your sound. Spring emulates the splash and bounce of the spring reverb hardware of vintage guitar amps. Plate emulates the sound of a classic studio plate reverb, for smooth, mellow ambience. It’s all built into a road-ready metal chassis with metal knobs, operating from either a 9-volt battery, or 9-volt DC power supply.

Product View

FEATURES

Three classic reverb sounds: Studio, Spring, Plate
All metal chassis and knobs and a road-ready design
Simple operation for easy access to essential sound for electric guitar
Operates from a 9-volt battery or 9V DC adapter (battery and DC supply not included)
Mono audio input and output, with buffered bypass for consistent tone in any setup

SPECIFICATIONS

Reverb Modes
Studio, Spring, Plate

Power Input Compatibility
9V DC (Center Negative)
Power Draw 130mA

Battery Compatibility
9V (Alkaline recommended)
4 Hours Run Time

Input
¼” Instrument Level Input
(650k Ohms Impedance)

Output
¼” Instrument Level Output
(1k Ohms Impedance)

Dimensions
4.59 in (D) x 27.5 in (W)
x 2.19 in (H)

Weight
.55 Lbs (8.8 oz)

Overview

DC 9V Power Input Jack
You can power your GAMMA Series pedal from a 9-volt regulated DC adapter (plug polarity is positive on the barrel and negative in the center).
Battery Capability
Use a Phillips head screwdriver to remove the 4 bottom screws to access battery connection. High quality alkaline 9-volt battery can be used for approximately 4 hours of continual operation. If pedal won’t operate when battery is installed, battery may be discharged, and should be replaced with a fresh, fully-charged battery. Or connect a compatible power supply for non- battery operation.
Footswitch
Push down the footswitch to toggle between on and bypass status.
LED
When the LED is lit, the effect is on.
When it’s off, the effect is bypassed.
. INPUT Jack
¼” mono audio jack, to receive the signal from your guitar or a previous pedal. Pedal draws power only when this jack has a plug inserted.
OUTPUT Jack
¼” mono audio jack, outputs the signal.
MODE SWITCH
Select from the 3 modes:
- Studio emulates a recording studio
- Spring emulates a spring reverb
- Plate emulates a reverb plate
MIX Knob
Adjusts reverb from minimum, to 100% “wet”: at maximum, all the sound is from the reverb, with no “dry” signal.
DECAY Knob
At low settings, the reverb time is short, at high settings, the reverb time is long.
TONE Knob
Adjusts the reverb from dark to bright.