T
AVISH
D
ESIGN
,
LLC
Made in U.S.A.
Classic Vacuum Tube Phono Stage (MM / MC)
Owner’s Manual (Assembled)
Page 1: ...TAVISH DESIGN LLC Made in U S A Classic Vacuum Tube Phono Stage MM MC Owner s Manual Assembled ...
Page 2: ...Quick Start 2 2 Safety Considerations 3 3 Setup Operation 4 3 1 Initial Setup 3 2 Operation 3 3 Tube Replacement 4 Technical Information 8 5 Warranty and Service 10 6 Copyright Trademark and Disclaimers 11 Manual Release 5 1A 15 Jan 2016 ...
Page 3: ... done this before 2 Connect your turntable to either the Moving Magnet MM or Moving Coil MC input and set the rear panel toggle switch to the corresponding position Default settings for the Classic Phono Stage should work well with most MM and low output MC cartridges You can customize cartridge loading see Section 3 If you have a high output MC cartridge the MM input is probably the best one to u...
Page 4: ...se to run into the amplifier as this can damage the amplifier or create an electric shock hazard Do not operate outdoors or in wet areas Do not allow rain to enter the amplifier by placing the unit next to an open window for instance 4 A broken or improperly seated vacuum tube can cause electric shock Do not operate the amplifier if any vacuum tubes have broken glass shells Align the tubes if any ...
Page 5: ... are bent Moving Magnet or Moving Coil Input MM cartridges connect to the MM input obviously and low output MC cartridges connect to the MC input In general we recommend that high output MC cartridges with an output 2 mV be connected to the MM input We recommend that high output MC cartridges with outputs 2 mV be connected to the MC input with low gain setting as described below However almost all...
Page 6: ... for some popular cartridges These are only a starting point Follow your cartridge manufacturer s recommendations or select the loading to suit your preference In selecting the capacitive load for a MM cartridge note that the cables connecting your turntable to the phono stage have approximately 30 35 pF per foot so a 3 foot cable contributes 100 pF of capacitance to cartridge loading Replace the ...
Page 7: ...1111 Table 3 3 MC Load Settings Cartridge Type Example Reference Output Input MC Gain Setting S3 1 2 MM Load S2 1 7 MC Load S1 1 7 MM AT95e 3 5 mV MM N A 47 pF 1001100 N A MM Ortofon 2M 5 5 mV MM N A 47 pF 1001100 N A Low Output MC Denon DL103 0 35 mV MC High 00 N A 1 kΩ 0011001 Low Output MC Ortofon Quintet Red 0 5 mV MC High 00 N A 330 Ω 0101010 Hi Output MC Denon DL110 1 6 mV MC Low 11 N A 47 5...
Page 8: ...e tubes with the same type That is replace the 12AU7A ECC82 only with another 12AU7A ECC82 not with another type The only exception is the 5751 which can be replaced with a 12AX7A ECC83 if you can t find a 5751 or if you prefer the 12AX7 The JJ 5751 tube usually supplied with the kit appears to have the same 300 mA heater current rating as a 12AX7 tube but some 5751 tubes have a 350 mA heater SW2 ...
Page 9: ...d defined as 1 THD level 19 V RMS into 10 kΩ at 1 kHz 31dB overload margin Input Impedance Moving Magnet 47 5 kΩ in parallel with fixed capacitance of approximately 35pF and adjustable capacitance of 0pF 47pF 100pF 147pF 180pF 227pF 280pF or 327pF Input Impedance Moving Coil Adjustable 47 5 kΩ 1 kΩ 330 Ω 250 Ω 100 Ω 91 Ω 77Ω or 71 Ω Output Impedance 850 Ω at 1 kHz Suggested Load Impedance 10 kΩ 18...
Page 10: ...ualization Accuracy L1 R1 L2 R2 L3 R3 L4 R4 L5 R5 Fig 4 1 Measured RIAA equalization error for 5 units with 5 sets of JJ tubes left and right channels Error is 0 5 dB from 30 Hz 20 kHz for all curves Fig 4 2 Distortion spectrum approximately 400 mV RMS output level at 1 kHz into 22 kΩ This is 0 012 THD ...
Page 11: ...ifications not authorized in writing by Tavish Design lightening power surges or acts of God Use of parts not obtained from Tavish Design may void this warranty This warranty is limited to the replacement or repair of this product and not to damage to equipment of other manufacturers Any applicable implied warranties including warranty of merchantability are limited in duration to a period of the ...
Page 12: ...alk New York 10501 info tavishdesign com 914 262 6988 6 COPYRIGHT TRADEMARK AND DISCLAIMERS Copyright Tavish Design LLC 2015 All rights reserved No part of this document may be reproduced by any means or translated to other languages without prior written consent of Tavish Design LLC Tavish Design is a registered trademark of Tavish Design LLC Tavish Design is continuously improving its products a...
