To Next PageTo Next PageWhy do I hear hiss at high GAIN settings on my Manley Amplifier?
The hiss you hear at higher GAIN settings on your Manley Amplifier is likely due to the input control acting as an attenuator, not a volume control. For the quietest operation, set the INPUT control fully clockwise and the GAIN switch to the lowest setting (40db). You may hear some hiss at the 50db gain setting.
What to do if my Manley Amplifier FORCE is not completing its power-up cycle?
If your Manley Amplifier FORCE isn't powering up, the protection circuitry may have been activated. Let the unit cool down before trying again. If it continues to fail, the unit requires professional servicing.
How to troubleshoot ground loops with Manley FORCE?
To troubleshoot ground loops with your Manley Amplifier, try resolving any grounding issues in your setup using dedicated cabling. If the ground loop persists, you can disconnect the Signal Ground from the Chassis ground on the FORCE by removing the Ground Lift jumper.
What to do if my Manley Amplifier FORCE has become noisy?
If your Manley Amplifier FORCE has become noisy, it might be due to worn tubes. The lifespan of these tubes is around 5000-6000 hours. Consult your dealer or purchase new, low noise, graded quality tubes from Manley Labs.
Details symbols used in the manual for important information, cautions, and references to other sections.
Contains legal disclaimers, copyright information, and terms of use for the manual and product.
Guide to safely unpacking the Manley FORCE and listing all included components.
Seven-LED meter displaying signal presence and level, with overload indication up to +24dBu.
Adjusts input gain by 10dB (or 20dB via jumper), impacting signal strength and noise floor.
120Hz filter to reduce unwanted low frequencies like rumble or breath pops.
Inverts the polarity of the audio signal by 180 degrees when activated.
Supplies 48V to microphone inputs, essential for condenser microphones.
Variable pad control for reducing input signal levels, acting as an attenuator.
Unbalanced 1/4-inch jack for instruments like guitars and keyboards; 10 MegOhm impedance.
Controls unit power; LED indicates warm-up and MUTE status.
Details on mic, direct, and balanced outputs, including pinouts and impedance.
Tips on using line-level signals, unbalanced inputs, and phantom power precautions.
Solutions for ground loop problems and understanding hiss at higher gain settings.
Diagnosing power-up failures and general advice on mic connections and tube care.
Instructions for replacing 12AX7 tubes, including lifespan and proper handling.
How to change channel gain from 50dB to 60dB using internal jumpers.
Procedure for disconnecting chassis ground to resolve hum issues.
Information on trim pots for peak meter calibration, set at the factory.
Details on the PSU fuse rating and what its failure indicates.
General
