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Write down key information of your Merlin amplifier(s) as noted 
above. Please refer this information when you need assistance 
from our technical support or RA service.
You can find important warranty information on the back cover.

Model #:

Serial #:

Purchased Date:

Purchased From:

MEMO

Summary of Contents for MERLIN2

Page 1: ...Owners Manual and Installation Guide MD MDseries 2 ...

Page 2: ...p Regulation First dual board amplifiers Power amplifier strapping Plexiglas panel Vari loud tone filters First class D amplifier at the IASCA Finals Mirror polished heat sink First dual torroid master slave MOSFET power supply XTERMINATOR Smart Amp Technology SAT TRUE DIGITAL full range stereo performance Utilize the vacuum tube Takes a solid step into multi channel amplifiers Class DE Digital Am...

Page 3: ...ll meet your needs and provide you with genuine power and accurately reproduced sound No other company offers a wide range of high quality purpose designed amplifiers as we do Discover the secret of car audio professionals and serious sound enthusiasts For 21 years U S Amps has defined the standard of amplifier quality and power High performance listeners agree the best systems are built on a rock...

Page 4: ...nections can touch the vehicle chassis Connect the RCA inputs to the appropriate signal source using only the highest quality RCA cables Make sure that the RCA and speaker cables do not run parallel to the 12V wiring INSTALLATION High efficiency Class D design 1D 2D 3D Output stages utilize high current MOSFET devices High speed audio grade components in all low level stages Active Constant Curren...

Page 5: ...sition to OUTPUT of HEAD UNIT 4 channel MD42 43 Amplifiers GND REM 12V P ow e rfu l A mazingl y GROUND from REMOTE OUTPUT of HEAD UNIT to BATTERY Impedance 4 8Ω for Monoblock 1 2Ω P ow e rfu l A mazingl y in FULL position to OUTPUT of HEAD UNIT 2 channel MD21 and Monoblock MD1D 2D 3D Amplifiers Basic Wiring CONNECTIONS ...

Page 6: ...W PASS position to OUTPUT of HEAD UNIT Y adapter 4 channel MD42 43 Amplifiers GND REM 12V P ow e rfu l A mazingl y GROUND from REMOTE OUTPUT of HEAD UNIT to BATTERY Minimum Impedance 4Ω P ow e rfu l A mazingl y in LOW PASS position to OUTPUT of HEAD UNIT Y adapter 2 channel MD21 Amplifier Bridged Wiring CONNECTIONS ...

Page 7: ... of HEAD UNIT to BATTERY GROUND from REMOTE OUTPUT of HEAD UNIT to BATTERY COMMON GROUND Impedance 4 8Ω M T M T to MLT in of Slave to OUTPUT of HEAD UNIT for Monoblock MD1D 2D 3D Amplifier only MLT Wiring Master Slave CONNECTIONS ...

Page 8: ... in mm A V V W W W W W W dB dB dB dB Ω KΩ Ω Hz Hz Hz Hz KHz MD21 2 x 75 2 x 100 1 x 200 0 03 105 95 10 10 50 600 7 9 200 30A x 1 40 250 0 12 Yes Yes Yes 12 16V 200 8 0 4 15 40 10 30K MD42 4 x 75 4 x 90 2 x 180 0 03 100 83 10 10 50 400 12 6 320 30A x 3 40 250 0 12 optional Yes Yes 12 16V 200 8 0 4 15 40 10 30K MD43 4 x 100 4 x 150 2 x 300 0 03 100 80 10 10 50 400 12 6 320 30A x 3 40 250 0 12 option...

Page 9: ...nd tight Check the BALANCE control on the head unit or other source to verify that it is set to its mid point If you are using the low level RCA input reverse the input plugs at the amplifier switch the R with the L If the channel which is silent switches to the other side the problem is either in the head unit other source or the connecting cables Only one channel works Confirm that all terminal ...

Page 10: ... noisy restaurant 70 Average city traffic garbage disposal alarm clock at 2 feet 80 Examples dB level Used wisely you new Merlin will provide a lifetime of fun and enjoyment Since hearing damage from loud sound is often undetectable until it is too late U S Amps and the Electronic Industry Association s Consumer Electronics Group recommend you avoid prolonged exposure to excessive loud sound We wa...

Page 11: ...Merlin amplifier s as noted above Please refer this information when you need assistance from our technical support or RA service You can find important warranty information on the back cover Model Serial Purchased Date Purchased From MEMO ...

Page 12: ...r you purchased the products from The dealer will help you to obtain Return Authorization Numbers This warranty extends only to the original purchaser and is not transferable Defective equipment must be returned within the warranty period freight prepaid to the U S Amps Factory or an Authorized U S Amps Warranty Station This warranty covers only detects in materials and workmanship of manufactured...

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