Manuale d’uso / di manutenzione del prodotto MM/MC GRAMOPHONE CARTRIDGE PREAMPLIFIER del fabbricante Manley
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MANLEY LABORA TORIES, INC. OWNER'S MANUAL MANLEY STEELHEAD V ersion 2 MM/MC GRAMOPHONE CAR TRIDGE PREAMPLIFIER MANLEY LABORA T ORIES, INC 13880 MAGNOLIA A VE. CHINO, CA. 91710 TEL: (909) 627-4256 F AX: (909) 628-2482 emanley@manleylabs.com http://www .
CONTENTS INTRODUCTION 3 INSTALLATION PRECAUTIONS 4 FEATURES AND APPLICATIONS 5 OPERATIONAL NOTES 9 TROUBLESHOOTING 12 SPECIFICATIONS 14 WARRANTY 15 WARRANTY REGISTRATION 16 SECTION P AGE.
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.
INST ALLA TION PRECAUTIONS a) 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.
FEA TURES AND APPLICA TIONS 1. 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.
3. SWITCH-SELECTABLE CARTRIDGE LOAD IMPEDANCE An effective means of varying the load seen by the MC cartridge has been included in the form of a 5-position rotary switch. This switch selects various taps on a specially manufactured dual-primary bi-filar wound, high-bandwidth low-resistance and multiple-shielded nickel-core step-up autoformer.
Each cartridge manufacturer’s product will work best in a laboratory sense when terminated (loaded) with a certain amount of resistance and capacitance.
7. LINE INPUT SELECT BUTTON 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.
OPERA TIONAL NOTES BEFORE POWER-UP Once placed, join the power supply cable to the pre-amplifier via the large16-pin circular connector. The 16-pin connectors are keyed and can only be mated when both halves are lined up correctly. Check and make sure the power supply is switched off, then attach the grounded IEC power cable jack to the IEC plug.
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.
Let the preamp tube(s) cool down, if necessary, before handling. Tube heater filaments are somewhat more suceptable to damage when warm or hot. Each tube should require only moderate force for removal and replacement. Gently rock the tube back and forth a bit during removal or replacement.
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.
Symptom Possible Cause Corr ective Action, cont’d Lights ON, no output Open 6922 filament, either Check for glowing 6922 either channel after warm channel. 6922 unplugged. filaments. Replace if up delay times out. necessary. Output MUTE function UnMUTE the preamp.
SPECIFICA TIONS Vacuum tube compliment: 6922 x 2 (gain) plus 7044 x 4 (output buffers) Fuse type and ratings: 117 VAC: 1.5 Amp 3AG slow-blow main 0.5 Amp 3AG slow-blow logic 234 VAC: 0.75 Amp 3AG slow-blow main 0.25 Amp 3AG slow-blow logic Moving Magnet input impedance: 5-step user adjustable via fixed low-noise resistors.
W ARRANTY All Manley Laboratories equipment is covered by a limited warranty against defects in materials and workmanship for a period of 90 days from date of purchase to the original purchaser only. A further optional limited 5 year transferrable warranty is available upon proper registration of ownership within 30 days of date of first purchase.
W ARRANTY REGISTRA TION We ask, grovel and beg that you please fill out this registration form and send the bottom half to: MANLEY LABORATORIES REGISTRATION DEPARTMENT 13880 MAGNOLIA AVE.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Manley MM/MC GRAMOPHONE CARTRIDGE PREAMPLIFIER è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Manley MM/MC GRAMOPHONE CARTRIDGE PREAMPLIFIER - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Manley MM/MC GRAMOPHONE CARTRIDGE PREAMPLIFIER imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Manley MM/MC GRAMOPHONE CARTRIDGE PREAMPLIFIER ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Manley MM/MC GRAMOPHONE CARTRIDGE PREAMPLIFIER, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Manley MM/MC GRAMOPHONE CARTRIDGE PREAMPLIFIER.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Manley MM/MC GRAMOPHONE CARTRIDGE PREAMPLIFIER. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Manley MM/MC GRAMOPHONE CARTRIDGE PREAMPLIFIER insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
