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ModWright Instruments LS 100, Owner'S Manual

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ModWright Instruments LS 100 Owner'S Manual Download Page 10

10 

 

Warranty:

 

 

ModWright agrees to warranty product for a period of 5 years from the date of purchase from a 
factory authorized ModWright Instruments Dealer.   

 

Warranty covers parts and labor for repairs due to equipment failure not related to customer 
abuse and/or neglect.  Customer is responsible for shipping costs to and from ModWright 
Instruments or authorized service center. 

 

Warranty is non-transferable to second party. 

 
 

Summary of Contents for LS 100

Page 1: ...1 LS 100 Tube Preamplifier Owner s Manual Manufactured by ModWright Instruments Inc 21919 399th St Amboy WA 98601 USA www modwright com ...

Page 2: ...olume control The preamp must be powered on in order for HT BP to operate IF A SOURCE WITH NO VOLUME CONTROL IS CONNECTED TO HT BP INPUTS AND HT BP BUTTON IS ENGAGED FRONT CHANNEL AMPS WILL RECEIVE FULL OUTPUT SIGNAL LEVEL FROM HT BP INPUT SOURCE WITH NO ATTENUATION THIS COULD LEAD TO SYSTEM DAMAGE Do not operate or power up unit without tubes installed in tube sockets Failure to do so will result...

Page 3: ...s the tubes down into socket until seated After tubes are installed replace lid and secure with screws Only after this should the power cord be connected DO NOT POWER UNIT ON UNTIL LID IS ENTIRELY FASTENED VERY HIGH VOLTAGES ARE PRESENT INSIDE UNIT DURING OPERATION AND IT IS CRITICAL THAT THE PREAMP ENCLOSURE NOT BE OPEN WHEN UNIT IS POWERED ON FAILURE TO DO SO MAY RESULT IN SERIOUS INJURY OR DEAT...

Page 4: ...V triggers 2 Monitor input select Class A discrete headphone amp fed via tube output Opt Upgrade Option input for future addition of internal Phono Stage or DAC Notes Rectangular plate is installed over the Opt input on the back panel of the unit This is removed when installing optional Phono Stage or DAC upgrade There is room for two RCA connectors for phono or two connectors for digita Upgrades ...

Page 5: ...ets of standard inputs located on the back panel Opt Optional Upgrade input CD DVD VIDEO AUX 1 and AUX 2 AUX 2 features XLR inputs wired single ended Three main outs include Main 1 XLR wired single ended Main 2 and Main 3 RCA Monitor input may be selected via remote or front panel Tape Out will output whichever input is selected with no gain or attenuation HT BP Home Theater Input is only for prea...

Page 6: ...power up balance control is out of circuit allowing for the cleanest signal path Balance control may be activated via front panel or remote control Once activated left knob on front panel allows for signal balance adjustment from L to R Home Theater Bypass HT BP input can ONLY be activated via front panel controls This product is fitted with an IEC input for use with detachable power cords Unless ...

Page 7: ...nsions 17 W x 17 D x 5 1 2 H Basic Specifications 1 pair XLR inputs wired single ended 4 pair RCA Inputs wired single ended 2 sets RCA Main Outs 1 set XLR Main Outs wired single ended 1 pair RCA Tape Outs 1 pair RCA Home Theater Bypass HT BP Inputs 1 pair RCA Monitor Inputs Vacuum Tubes Two 6SN7 driver tubes may substitute ANY 6SN7 CV181 compatible tube One 5AR4 GZ34 rectifier may also substitute ...

Page 8: ...rntable connect to RCA inputs labeled Opt on rear panel Cartridge loading is achieved via internal dip switches Factory setting is 100 ohm zero capacitance Two 6 row dip switch banks are located on the board Loading is as follows Dip Switch 1 up 100 ohm Dip Switch 2 up 100 ohm Dip Switch 1 2 up 50 ohm Dip Switch 3 up 1K Dip Switch 4 up 1K Dip Switch 3 4 up 500 ohm Dip Switch 5 up 47K Dip Switch 6 ...

Page 9: ...ts back into the remaining hole in the chassis and tighten to fill the other hole that was used to secure the OPT plate in place Carefully align the phono board with the two 20 pin male headers on the tube board Once all pins are properly aligned firmly but gently push down until phono board is firmly seated on headers You will also need to secure the provided 4 40 size screw in a hole in the phon...

Page 10: ...ctory authorized ModWright Instruments Dealer Warranty covers parts and labor for repairs due to equipment failure not related to customer abuse and or neglect Customer is responsible for shipping costs to and from ModWright Instruments or authorized service center Warranty is non transferable to second party ...

Page 11: ...cts please do not hesitate to contact us via phone e mail or conventional mail PH 360 247 6688 EMAIL modwright yahoo com ADDRESS ModWright Instruments Inc 21919 NE 399th St Amboy WA 98601 United States of America Thank you for purchasing a ModWright Instruments product Dan Wright President Owner ModWright Instruments Inc ...

Page 12: ...12 ...

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