EAR Yoshino EAR 912 Скачать руководство пользователя страница 8

 

7

 

EAR 912 PREAMP 

 

 

SPECIFICATIONS 

 
 
 
 

Inputs:   

 

 

2 x phono 

 

 

 

 

 

3 x line level unbalanced (RCA phono connector) 

 

1 Tape Out: 

 

 

2 x line level balanced (XLR connector) 

 

 

 

 

 

1 x tape monitor 

 

Line Amp Gain   

 

14dB (reference sensitivity = 775mV for “0”dB V.U. 

= 3v output 

 

Line Amp   

 

 

S/Noise   

 

= 90dB (1v out ref) 

 

 

 

 

 

Distortion 

 

= Less than 0.1% 1KHz 3v out 

 

 

 

 

 

Frequency Response 

= 20-20KHz + 0-0.3dB 

 

 

 

 

 

Max Output 

 

= 6v 600

either output

 

 

Phono section

 

 

 

2 inputs 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 = 5¼”,    D= 10½” 

 

 

 

 

 

      (48.26cm x 13.3cm x 26.7cm) 

Facilities 

 

 

Tape Monitor 

 

Front Panel 

 

 

Mute Switch 

 

 

 

 

 

Mono/Stereo Switch 

 

 

 

 

 

Input Selector 

 

 

 

 

 

Volume Control 

 

 

 

 

 

Phono 1, Phono 2 

 

 

 

 

 

MM/MC 

 

 

 

 

 

MC Input impedance switch 

 

 

 

 

 

Function Selector 

 

 

 

 

 

BAL1, BAL2, Phono, CD, Aux1, Aux 2

 

 

 

 

 

 

Содержание EAR 912

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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