EAR Yoshino EAR 912 Owner'S Manual Download Page 1 | Manualshive

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EAR 912

Designed by

Tim de Paravicini

OWNER’S MANUAL

EAR / Yoshino Ltd

Huntingdon, Cambridgeshire, England, United Kingdom

www.earyoshino.com

[email protected]

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Summary of Contents for EAR 912

Page 1: ...EAR 912 Designed by Tim de Paravicini OWNER S MANUAL EAR Yoshino Ltd Huntingdon Cambridgeshire England United Kingdom www earyoshino com sales earyoshino com ...

Page 2: ...shes it from other high end preamplifiers on the market is its extensive use of transformer coupling Designer Tim de Paravicini is known as probably the leading authority on audio band transformers and he has used his expertise to the maximum in the 912 designing transformers specially for the task The moving coil phono input is of course transformer coupled with no less than four different taps o...

Page 3: ...e output transformer is in the anode circuit of the output valve while two secondaries feed the outputs one to the unbalanced output sockets and one to the balanced outputs Note that some manufacturers have boasted of the vast headroom of their output circuits sometimes capable of output voltages in excess of 20VRMS from a low source impedance Although this sounds impressive it can have an unfortu...

Page 4: ...than moving coil MC types but also require a much higher resistance loading to work properly Please ensure that the switch on the front panel is set correctly An exception to this rule is the case of so called high output moving coil cartridges which usually work best when the amplifier is set to the MM position Even so some users of such cartridges have reported good results with the MC setting s...

Page 5: ...it will produce little or no sound and a very odd frequency response Again this is not a fault with the 912 and should be rectified at source or simply use an unbalancing lead to one of the 912 s unbalanced inputs if this does not result in hum SETTING UP YOUR AMPLIFIER CABLES Yoshino does not make or market cables and does not endorse any particular brand In fact the 912 in common with all Yoshin...

Page 6: ...or so clearance above it will be plenty to keep temperatures well within safe and comfortable limit Make sure there is enough depth behind it to ensure that leads are not unduly strained It is not significantly microphonic SETTING UP YOUR AMPLIFIER WIRING UP Connect your turntable s to the phono inputs remembering to connect the separate earth wire if any to the nearby earth terminal on the 912 Co...

Page 7: ...lectricity and to maximise operating life CARE AND MAINTENANCE Your 912 preamplifier needs very little attention Surfaces should be cleaned with a dry soft cloth If any liquids are spilled on it disconnect the mains dry the outside thoroughly and inspect internally for liquid ingress If there are any signs that liquid has got inside we recommend that the unit be returned to us or our authorised se...

Page 8: ...puts both MM or MC Input Impedance MM 47K Overload Margin on phono 28dB MC Selection 40 12 6 3 Gain Settings 3 position 0 6 12dB Gain MM 2 4mv for 0 dB V U 50dB MC 0 24 0 15 0 1 0 06mv 1KHz 70dB 73dB 76dB 80dB RIAA Accuracy 0 2dB 30Hz 20KHz S Noise 68dB ref 2 4mv unweighted Power Consumption 30VA 100v 117v or 230v country dependent Weight 13kg Size W 19 Rack H 5 D 10 48 26cm x 13 3cm x 26 7cm Faci...

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