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Related Manuals for Manley MM/MC GRAMOPHONE CARTRIDGE PREAMPLIFIER
Summary of Contents for Manley MM/MC GRAMOPHONE CARTRIDGE PREAMPLIFIER
- Page 1 MANLEY LABORATORIES, INC. OWNER'S MANUAL MANLEY STEELHEAD Version 2 MM/MC GRAMOPHONE CARTRIDGE PREAMPLIFIER MANLEY LABORATORIES, INC 13880 MAGNOLIA AVE. CHINO, CA. 91710 TEL: (909) 627-4256 FAX: (909) 628-2482 emanley@manleylabs.com http://www.manleylabs.com Rev. 8-24-2004 LH...
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Page 2: Table Of Contents
SECTION INTRODUCTION INSTALLATION PRECAUTIONS FEATURES AND APPLICATIONS OPERATIONAL NOTES TROUBLESHOOTING SPECIFICATIONS WARRANTY WARRANTY REGISTRATION CONTENTS PAGE... -
Page 3: Introduction
INTRODUCTION THANK YOU!..for choosing The MANLEY STEELHEAD phono preamplifier. Please read over this manual carefully as it contains information essential to the proper operation and maximum enjoy- ment of this fabulous instrument. The MANLEY STEELHEAD is designed to provide that rare combination of maximized sonic performance coupled with a generous ability to adapt to any moving magnet, moving coil or iron vane phono cartridge you may wish to use. -
Page 4: Installation Precautions
Avoid locating the preamp where it will be exposed to direct sunlight, excessive humidity, dust or moisture. Extreme environments may temporarily or permanently degrade preamp performance. Keep the preamp housing away from sources of strong magnetic field radiation, such as large video display CRTs, large power lines or power/audio transformers in nearby equipment. -
Page 5: Features And Applications
FEATURES AND APPLICATIONS HIGH PERFORMANCE FRONT END The STEELHEAD preamplifier makes the best use of active and passive component and circuit developments generated over the past half-century. The hybrid cascode gain blocks simultaneously deliver wide-band high-gain, low noise and low distortion performance without having to resort to heavy-handed amounts of negative feedback. - Page 6 Quite worthwhile provided, as in the STEELHEAD, the autoformer has the necessary performance for the job. This pivotal component has had engineering attention lavished upon it in the only way possible or practical: The Manley Labs magnetics department. In-house transformer prototyping and manufacturing capabilities permit realization of extraordinary transformer designs.
- Page 7 Each cartridge manufacturer’s product will work best in a laboratory sense when terminated (loaded) with a certain amount of resistance and capacitance. By lab sense it is meant that the signal developed by the cartridge is at maximum power transfer into the pre-amp, with minimum overshoot and ringing, flattest frequency response and gentle roll-off characteristics.
- Page 8 The LINE switch routes external line level signals to the top of the feature switch stack, and through the VOLUME control. In this way, an external signal source may be manipulated by the SUM, DIM and MUTE switches, along with the volume control, before transmission to any downstream power amplifiers. Notice here that the Steelhead’s VARIable internal line driver does not have any voltage gain, but does have power gain by virtue of its low output impedance.
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Page 9: Operational Notes
OPERATIONAL NOTES INPUT INPUT GAIN dB GAIN dB PREPARATION FOR INSTALLATION Budget a suitable space in which to place the preamplifier, power supply and associated interconnect cable. This space should be free of strong external magnetic and RF fields, and reasonably removed from strong loudspeaker-generated acoustical fields. - Page 10 The winking MUTE lamp indicates the beginning of a 30 second warm-up mute delay, during which time the muting relay is engaged; no output will be heard from the preamp. DURING OPERATION Once audio is heard from the STEELHEAD the exploration for the ideal control settings can begin.
- Page 11 VARI MC-1 IN RIGHT LINE IN MC-2 IN MM IN RFI SHUNT FIXED Please direct any questions to your dealer or MANLEY LABS for further assistance. CHASSIS GROUND CIRCUIT SERIAL # MC-1 IN VARI LEFT LINE IN MC-2 IN...
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Page 12: Troubleshooting
TROUBLESHOOTING The STEELHEAD’s system architecture is designed with a variety of features so as to allow flexibility in accommodating as many cartridges and as much downstream gear as possible. Access to these capabilities rest on the assumption that all STEELHEAD systems are functioning properly. If trouble is encountered please review the following short list of symptoms and corrective remedies before contacting your dealer or us. - Page 13 Symptom Lights ON, no output either channel after warm up delay times out. Hum heard on unused MM or MC inputs. Hum heard on active inputs. Ground link between CHAS- No or bad sound heard on MC2 input. Remarks on hum pick-up: Please be aware that the STEELHEAD can develop voltage amplification factors as high as 30,000 times, or 90 dB at the 50-60 Hz power line “hum”...
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Page 14: Specifications
Vacuum tube compliment: 6922 x 2 (gain) plus 7044 x 4 (output buffers) Fuse type and ratings: Moving Magnet input impedance: Moving Coil input impedance: Input Termination Capacitance: Gain Steps: 4-step user adjustable, 50, 55, 60 and 65 dB active gain at 1 kHz referred to FIXED output jack, 10 k-ohm load. -
Page 15: Warranty
Manley Laboratories via insured freight at the customer's own expense. Factory original packaging can be ordered from Manley Labs. Customer will be charged for new factory original packaging if customer fails to ship product to Manley Labs in non-original factory packaging. -
Page 16: Warranty Registration
WARRANTY REGISTRATION We ask, grovel and beg that you please fill out this registration form and send the bottom half MANLEY LABORATORIES REGISTRATION DEPARTMENT 13880 MAGNOLIA AVE. CHINO, CA. 91710 USA Or you may FAX this form in to: +1 (909) 628-2482 or you may fill in the online warranty registration form found in the Tech Support section of our website www.manleylabs.com or you can be really diligent and register your warranty three times to see if we get confused! Registration entitles you to product support, full warranty benefits, and notice of product...