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Related Manuals for Halcro dm10
Summary of Contents for Halcro dm10
- Page 1 Preamplifier with remote control Owner’s Manual www.halcro.com...
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Page 2: Table Of Contents
Connecting phono stage......18 If service is required ........33 Connect the mains supply cable ....18 Transportation of products....... 34 Bridging............18 Freight damage claims......34 Break-in period..........18 If you have moved ........34 Programmable input selections....19 Thank you for choosing Halcro!....34... -
Page 3: Introduction
The brief given to our R & D team, headed by connoisseurs. Bruce Candy, was to produce two models of If you desire to contact Halcro to give us preamplifier to satisfy the needs of every feedback on your purchase or for general... -
Page 4: Important Safety Information
The dm10 is designed to operate on any mains supply in the range of 90 to 240 V, 50 to 60 Hz, without any internal or external... -
Page 5: Product Design
Product Design Electronic design by Bruce Candy Fifth, the power supply and microprocessor circuits designed minimal In keeping with my philosophy of design, my electromagnetic emissions (extensive 2 basic aim was to produce a preamplifier with order filters). which I, personally, am quite satisfied. I sincerely hope that others will share my Sixth, the power supply switching frequency satisfaction with these products. - Page 6 The variable resistor and capacitor set the The output of this RIAA stage is fed to a low load impedance of the high input impedance noise input selector stage, which has a gain of amplifier stage and act to load moving magnet 2.
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Page 7: Microprocessor Control
Audible relay noise Microprocessor control The dm8 and dm10 use mechanical relays in excellent audio electronics all switching including the volume control complemented and controlled by a number of because they exhibit the following ideal highly integrated micro-controllers located characteristics: close to the electronics they serve. -
Page 8: Industrial Design
Industrial design Control interface Product form Knobs and buttons The volume and input selector knobs use a The aim when designing the dm8 and dm10 unique magnetic incremental indexing create preamplifier that mechanism developed to provide a very unmistakably part of the Halcro product family, subtle and reliable indexing action. -
Page 9: Mechanical Design
Mechanical design The Halcro dm8 and dm10 can boast their Each of the audio, panel and display, and spectacularly noise distortion power supply sections is contained within its specifications while their cases contain own internal aluminum enclosure. Cables inherently noisy digital circuitry, including a... -
Page 10: Installation
Halcro preamplifier, please contact your dealer. Positioning Unpacking The Halcro dm10 preamplifier can be placed anywhere indoors. There is no need to leave o Unscrew the four knurled knobs at the room around the unit to allow for ventilation as... -
Page 11: Controls And Connections
Controls and Connections Front panel Figure 1 Headphone jack Balance control right Remote sensor window Input select control LCD information display Volume control Balance control left 10. Phase button Standby/On button 11. Mono/Stereo button Mute button... - Page 12 1. Headphone jack: This jack may be used to 6. Mute button: Depressing this button mutes listen to the dm10’s output through a pair of the output to the speakers but not the headphones. Ensure that the headphones headphones. have a standard ¼” stereo plug.
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Page 13: Front Panel Display
Front panel display Figure 2 2. Signal source indicator: Displays the signal 1. Main information display: The information source that is currently selected. provided on this display changes depending on what function is currently being processed. 3. Signal source location indicator: Displays In normal use it will display the volume of both the input to which the signal source has been connected. -
Page 14: Rear Panel
Rear panel Figure 3 Phono capacitance selector Tape monitor output Phono resistance selector 10. Output sockets Phono ground terminal 11. Ground switch Phono gain switch 12. Remote sensor window Phono cartridge selector switch 13. Main power switch, mains socket and fuse holder Phono stage inputs 14. - Page 15 10. Output sockets: Used to connect the selector: Allows the user to precisely match preamplifier to power amplifier(s). the dm10 to the capacitance and resistance of 11. Ground switch: If the dm10 is attached to a the phono cartridge. Remote power amplifier leave this switch on .
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Page 16: Remote Control
3. Standby/On button: Press to switch the system between Standby and On. 4. Signal source buttons: Press to select any one of six signal sources on the dm10. 5. Function button: Press to choose the following functions: balance between the speakers, in-phase and out-of-phase and stereo/mono. -
Page 17: Dm10 Outputs
Connecting home theater dm10 outputs processor The balanced voltage outputs or current- mode outputs most desirable As a safety precaution please ensure that the minimizing earth loop generated mains hum unit is not connected to the mains power and ripple, or high frequency interference if while connecting a Home Theater Processor these are a problem. -
Page 18: Connecting To A Power Amplifier
Connecting to a power amplifier Each dm10 has: The dm10 will control power amplifiers from balanced and unbalanced voltage sources, as • two pairs of unbalanced current outputs well as an unbalanced current source. The (use one pair for un-bridged power... -
Page 19: Connecting Phono Stage
(Fig 3, 6) located on the left Plug the main power cable into the main of the rear panel. The dm10 has the option of power socket on the rear of the dm10 connecting turntables with either balanced or (Fig 3 13). -
Page 20: Programmable Input Selections
Programmable input selections The dm10 has seven available pairs of All inputs that have a signal source connected programmable input connectors: must be programmed by the remote control. Any input can be programmed to connect any • three unbalanced voltage inputs source and each button on the remote •... -
Page 21: Operation
Operation Start up Press the main power switch to On. Depress the applicable program button (Fig 3, 8) then simultaneously point the remote When the unit is switched on at the main control to a remote sensor window (Fig 1, 2 power switch (Fig 3, 13) the preamplifier will go OR Fig 3, 12) and press the button on the into Standby mode. -
Page 22: Variable Knob Setup
Variable knob setup Display There three ways setting Displayed information continuously variable knobs (Fig 3, 1 and 2) In normal use the center of the display will • according to the manufacturer's display the volume of both the left and right of recommendations the system. -
Page 23: Volume
Mute button again. you hear through the headphones). Stored volumes Mute The dm10 memorizes two volume levels. When the Mute button is pressed, the output These setting are for the Headphone output to the power amplifier is disabled, the dB and the Power Amplifier output. - Page 24 Volume – balancing function Front panel Mono/stereo function The volume can be evenly distributed though Mode can only be selected when the unit is in the speakers or one channel can be louder the phono mode. To toggle the unit between than the other.
- Page 25 Switching between sources To select a device, press the appropriate If a source is selected (either through the front button on the remote control or turn the panel or remote control) and the correct selector knob on the front panel until the source is not selected, ensure that the device you require appears in the center of program...
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Page 26: Electronic Protection And Reliability
Halcro high temperature rated capacitors highly • all Halcro electrolytic capacitors are rated advantageous compared to the standard at a minimum of 105ºC instead of the 85ºC rated devices. -
Page 27: Dm10 Specifications
Specifications Inputs Power supply • three RCA Unbalanced Voltage Mode Switch-mode, 110 kHz CW, 4th order mains filter, 4th order supply rail filter. Fully complies • three XLR Balanced Voltage Mode with EMC and CE standards. Circuit contains • one RCA Current Mode extensive mains transient protection and fault •... - Page 28 Input Select. Front Panel; Phono Capacitance: Optical Rotary Rear Panel; Encoder with Halcro 180° Rotary Control Flux Detent Remote Control; Phono Resistance: Rear Panel; 6 x Push Buttons 270° Rotary Control Balance: Front Panel; Headphone Ground: 2 x Push Buttons Rear Panel;...
- Page 29 Shipping dimensions Output impedance • 170 + 170 ohm balanced and 170 ohm Wooden case unbalanced Width: 585 mm, 23 in • 30 kohm current mode Depth: 535 mm, 21 in • 10 ohm headphones Height: 515 mm, 20 in •...
- Page 30 Phono equalization Memory Conforms within +/-0.5 dB RIAA All volume gain settings for each programmed standard. input (source) are remembered upon either power off or upon selection to a different input. Upon re-selection to each input, or upon power up, the previously remembered volume for each input is reinstated.
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Page 31: Care And Maintenance
Halcro at: Please read the following procedures very service@halcro.com carefully: o Before cleaning, turn the power to the unit off at the main power switch. -
Page 32: Troubleshooting
Ensure the output select switch is set to the correct output mode. Ensure the dm10 is not muted or the volume is too low. Will not select source Ensure the source is connected to a programmed input and the program button adjacent to the input is illuminated. -
Page 33: Service And Warranty Information
Halcro products for years to come. It is our atmospheric conditions are not warranted. expressed desire that your Halcro products The warranty shall be void and of no effect if work flawlessly and that you enjoy music,... -
Page 34: Warranty Verification
• copy of credit card voucher or canceled • the unit must be returned to Halcro or its check accompanied by owner's record of authorized repair center in the original... -
Page 35: Transportation Of Products
Halcro dealer upon request. We are not equipped to accept freight collect shipments. Thank you for choosing Halcro is not liable for freight, courier, or other Halcro! charges incurred in transporting a unit to and We trust that you will enjoy the performance... - Page 36 Copyright and acknowledgements This product is manufactured by Extraordinary Technology (Hi-Fi) Pty Ltd trading as Halcro and Halcro Audio (USA) Inc. Halcro dm10 Owner’s Manual Revision 2.0, © Halcro 2005...