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Table of Contents
Summary of Contents for MOSCODE 401HR
- Page 1 MOSCODE 401HR INSTRUCTION MANUAL © 2005 Moscode Corp, All Rights Reserved...
- Page 2 Rosenberg, a man of widely expanded horizons. (Thus, the HR!)* Since you are now part of the Moscode family, I’ve included a reprint at the end of this manual of Harvey’s introductory remarks in the original Moscode manual. Please be sure and follow all his suggestions closely…...
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Page 3: Table Of Contents
Initial Power On ..........................6 The Moscode Logo Status Indicator/ Hi-Temp ................6 Power On Sequence ........................6 More about your 401HR Stereo Amplifier ............7 Edison Price 5-Way Music Binding Posts ................7 Cleaning Your Music Posts ......................7 Other Ways of Connecting Speaker Cable ................7 Power Matters ..........................8... -
Page 4: Safety
(Now is a good time to read and follow Harvey’s original introduction on page 24.) Carefully unpack your amplifier and position for use observing all safety precautions listed above. Please save the box in case there’s a need to ship your 401HR for any reason. -
Page 5: Tube Installation
Tip: You’ll find the Tube Guide printed on the front panel of the amplifier chassis when the faceplate is down. If your 401HR came with a pair of 6H30Pi and a pair of 6FQ7, use the 6H30 for the outside pair of sockets, V101 and V201. Insert the 6FQ7 into the inside pair, V102 and V202. -
Page 6: Stereo
MOSCODE 401HR INSTRUCTION MANUAL Stereo Set the input switch to STEREO. • Connect the right channel interconnect from the right channel output of your • preamplifier or source to the right channel amplifier input. Connect the left channel interconnect from the left output of your source to the left •... -
Page 7: Vertical Stereo Biamp
(Center) Position Vertical Stereo Biamp Set the INPUT switch to BIAMP on the rear panel to optimize the 401HR for two amplifiers, a stereo amp for the left channel, and a second stereo amp for right channel. Vertical bi-amp mode feeds the same input to both channels, with one channel used for low frequency drivers, the other for the high frequency drivers. -
Page 8: Connecting Vertical Stereo Biamp
Connecting Vertical Stereo Biamp You’ll need two Moscode 401HR amplifiers, and biwirable speakers. Remove any links between bass and treble driver binding posts at the speaker. -
Page 9: Operation
IEC power connector on the back panel next to the fuse. Plug the other end into the AC wall outlet and you’re ready to enjoy your Moscode. Push in the round button on the front panel to turn your Moscode 401HR on. -
Page 10: More About Your 401Hr Stereo Amplifier
MOSCODE 401HR INSTRUCTION MANUAL More about your 401HR Stereo Amplifier Edison Price 5-Way Music Binding Posts Edison Price Music Posts offer superior signal transfer characteristics. Their sound is a result of their high-purity Oxygen Free Copper (OFC) construction with no plating of any kind. -
Page 11: Power Matters
Power Matters The Moscode 401HR is equipped with a standard 15A IEC power connector and a heavy- duty 14-gauge power cord. Our power cord provides excellent performance, but we encourage you to further tune the sound with aftermarket power cords. Don’t use cord of less than 14-gauge as it will compromise performance. -
Page 12: Remote Control Power
Remote power trigger input. Remote Control Power The Moscode 401HR is equipped with a 12 volt remote power trigger that uses a standard 3.5mm (1/8”) 2-conductor plug, tip positive. Reversing polarity may damage the amplifier. The presence of power signal will turn the amplifier on regardless of the position of the front power switch. -
Page 13: Break-In & Tube Maintenance
MOSCODE 401HR INSTRUCTION MANUAL Break-in and Tube Maintenance The 401HR needs around 25 hours to open up, and a good 100 hours on the clock before performing its best. Keeping the 401HR at peak performance just means keeping the Music Posts clean and periodically changing the low-cost small-signal tube pairs, of which you can choose from many types. -
Page 14: Tubes And Sound
The front-end tubes keep the 401HR honest; it sounds fantastic playing all types of music with 200Wpc covering the big musical moments, acoustic or otherwise. Like most tube gear, female vocals are really special, very attractive. -
Page 15: The Circuit
I’ve always designed using the best characteristics of tubes and transistors in one package for the best bang per audiophile buck. The 401HR delivers an articulate, life-like, dynamic, musical 200Wpc using a class-A tube driver stage coupled to MOSFET power outputs. -
Page 16: Output Transformers, Mosfets, And The Rule Of Ten
MOSCODE 401HR INSTRUCTION MANUAL Output Transformers, MOSFETs, and the Rule of Ten I’ve always loved tube sound, but I have problems with all-tube amplifiers with output transformers. Transformers need a lot of iron for good, tight bass at higher power levels, which means more wire, that means more stray inductance and capacitance, and that interferes with the transfer function of the output transformer at high frequencies. - Page 17 As a result, there’s no need for any type of power conditioning on the 401HR. A well- designed power supply doesn’t need any help. The 401HR stores a huge amount of energy, 88,000mF of capacitance per channel to drive any speaker with ease.
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Page 18: Troubleshooting Chart
CAUTION! Do this only once If fuse blows within 10 seconds refer to Moscode Corp for service. Blown control Disconnect amplifier from AC line, check fuse, then transformer fuse... - Page 19 CAUTION! Do this only once If fuse blows within 10 circuit board seconds refer to Moscode Corp for service. inside. Sound Comes Out Receiver or Preamp Verify that the preamp output channel is properly...
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Page 20: Fuse Replacement
Try reversing the speaker + & - connections at the (Subjective) incorrect absolute speaker only. Be sure both speakers are wired polarity of a consistently with each other. The Moscode M401HR component in the does NOT reverse polarity. audio chain inverting polarity. - Page 21 MOSCODE 401HR INSTRUCTION MANUAL 4. (4) + and - power module rail fuses (2 per channel) 10 Amp Fast Blow 3AG.
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Page 22: Features/ Specifications
MOSCODE 401HR INSTRUCTION MANUAL Features and Specifications 401HR Features Low negative feedback • Feedback loop in only one stage of amplification Improves high frequency clarity and bass response Allows direct coupling to the speaker No output inductor needed for stability... -
Page 23: Specifications
MOSCODE 401HR INSTRUCTION MANUAL -free copper heavy-duty 5-way binding posts directly soldered to output board • No output wiring Minimized number of solder joints. • Minimalist wiring • Only 4 wires per channel carry audio signal Two hot, two ground Fully shock-mounted circuit board on elastomer suspension •... -
Page 24: Notes/ Tube Records
MOSCODE 401HR INSTRUCTION MANUAL Notes/ Tube Records: Date purchased___________ • • Tubes Maintenance: Date V101 V201 V102 V202 • • _______ _______ _______ _______ _______ • _______ _______ _______ _______ _______ • _______ _______ _______ _______ _______ _______ _______ _______... -
Page 25: Warranty
Moscode or an authorized Moscode repair center. The product must be packed and returned to Moscode or an authorized Moscode repair center by the customer at his or her sole expense. Moscode will pay return freight of its choice. A RETURNED PRODUCT MUST BE ACCOMPANIED BY A WRITTEN DESCRIPTION OF THE DEFECT AND A PHOTOCOPY OF THE ORIGINAL PURCHASE RECEIPT. - Page 26 Customer Service or Email: CustomerService@Moscode.com 9. WARRANTY OUTSIDE THE U.S.A. If Moscode has authorized distribution in any countries of the world. In each country, the authorized importing retailer or distributor has accepted the responsibility for warranty of products sold by that retailer or distributor. Warranty service should normally be obtained from the importing retailer or distributor from whom you purchased your product.
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Page 27: Harvey's Original Intro
Before you unpack your amplifier it is important that we first prepare you--the listener. We don‘t want you to rush to unpack your amplifier and in great haste listen to it. Quite to the contrary, you must be carefully prepared before you listen to your Moscode Tube Amplifier for the first time. - Page 28 MOSCODE 401HR INSTRUCTION MANUAL STEP III Lie down on your private massage table and get your customary massage. It doesn’t matter whether it is a Shiatsu or Swedish massage because the only thing that matters is that any tightness in your muscles is relieved. Take special care of upper back, and neck and facial muscles, because they are very significant to the hearing process.
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