Introduction, Thank YOU | Manley Labs 50/50 specs

INTRODUCTION

THANK YOU!...

for choosing the Manley DIRECT INPUT 50/50 Amplifier. Designed by David Manley, the Manley DIRECT INPUT 50/50 Amplifier uses only the best available components, with the shortest and cleanest signal path possible, and with the use of our own in-house CNC machine shop we can provide you with a amplifier that looks as good as it sounds.

The circuit and the components used have been chosen carefully after years of development and refinement for reliability, constancy and most importanly, musical, accurate, and emotional delivery of the sound. The circuit topology is similar to other designs in the MANLEY range. This amplifier is configured for the more powerful tetrode operation mode with a separate regulated screen supply which allows a wider range of EL34s to be used as the screens are run at safer lower and constant voltages . We emphasize big, beefy resevoir capacitors in the high voltage supplies giving plenty of instant energy for dynamic performance of transient peaks and bass performance which often exceeds that of rival solid-state amplifiers. We run high voltages on the plates of the output tubes and are thus able to run them at lower current which will result in longer life for the output tubes. Each output tube has its own bias adjust, and the procedure for adjusting each tube's current draw is described in this manual. The multi-sectioned output transformer has been factory set for an optimum 5 ohm load which will drive most speakers comfortably. This amplifier with its built in selector switch, record output, and precision stepped attenuator becomes the efficient and compact heart of a system which should bring you years of pleasure.

Thank you again, and please enjoy!

GENERAL NOTES

LOCATION & VENTILATION

The Manley DIRECT INPUT 50/50 Amplifier must be installed in a stable location with ample ventilation. Allow a minimum of 2 inches of clearance on the top and sides of the amplifiers, such that a constant flow of air can flow. Do not place amplifiers directly on high pile carpet or any other surface that will block the ventilation vents underneath the amplifiers. If you have small children or pets, you should consider placing the amplifiers out of reach to prevent damage to the amplifier or damage to your small children or pets by the amplifier as the tubes do get hot during operation.

WATER & MOISTURE

As with any electrical equipment, these amplifiers should not be used near water or moisture. If liquid enters the amplifier, it must be immediately returned to your dealer for servicing.

SERVICING

The user should not attempt to service the amplifier beyond that described in the owner's manual. Refer all servicing other than biasing and tube replacement to Manley Laboratories

SPECIAL NOTES

Tubes may become loose during transit. Straighten and press down each tube before plugging the amplifier into the mains socket. Furthermore, do not touch the tubes after the amplifier has been switched on, as the tubes become very hot during operation and should only be handled after the power has been turned off and the tubes have cooled.

WARNING! !

TO PREVENT THE RISK OF ELECTRIC SHOCK

DO NOT OPEN THE CABINET

REFER SERVICING TO

QUALIFIED PERSONEL

50/50 specifications

Manley Labs has long been synonymous with high-quality audio equipment, and the Manley Labs 50/50 power amplifier is no exception. This remarkable amplifier is designed to deliver exceptional sound quality with a range of features and technologies that set it apart in the world of audio amplification.

At its core, the Manley 50/50 is a vacuum tube power amplifier, which means it utilizes vacuum tubes to amplify audio signals. This technology is beloved by audiophiles for its warm, rich sound reproduction. The 50/50 employs a unique combination of 6L6GC power tubes, providing an output of 50 watts per channel. This power output is ample for driving a wide variety of speakers, making it suitable for both home use and professional studio applications.

One of the standout features of the Manley 50/50 is its all-tube design, which ensures that the amplifier delivers a natural, musical sound that many believe cannot be matched by solid-state amplifiers. The 50/50 incorporates a push-pull configuration that results in low distortion and a wide frequency response. This means that listeners can experience a full spectrum of sound with incredible clarity.

The amplifier also boasts an impressive frequency response that ranges from 20 Hz to 20 kHz, allowing it to reproduce low bass tones and high frequencies with exceptional fidelity. This range is critical for achieving an accurate soundstage, making it a favorite among sound engineers and music enthusiasts alike.

Another notable aspect of the 50/50 is its user-friendly design. The front panel features a simple, yet elegant layout with power switches, LED indicators, and a robust set of speaker binding posts. This allows for easy connectivity and operation, making it accessible to both seasoned audiophiles and newcomers to high-end audio.

The build quality of the Manley 50/50 is equally impressive. Constructed in the United States, the amplifier features a sturdy chassis and a meticulous hand-wired design. This attention to detail ensures longevity and durability, making the amplifier a worthwhile investment for any serious audio enthusiast.

In conclusion, the Manley Labs 50/50 power amplifier stands out in the realm of audio amplification due to its all-tube design, impressive power output, and remarkable sound quality. With its combination of modern engineering and classic design, the 50/50 continues to be a favored choice for those seeking a high-fidelity listening experience.