US Amps AX User's Manual
Contents
1. WARNING NEVER use ground loop isolation on the input of your U S Amp It doesn t need it S00 O FRONT HP NN P GAIN 6 m Al Soo 200 5K s0 Zoo S SUB INPUT SE es RBG AX 5600 UWs FIVE GHANNEL AMPLIFIER U S A INPUT INPUT O DE SUB CHANNEL a Remote Bass Gain The AX 5600 comes with an optional Remote Bass Gain or RBG that can be mounted in the passenger compartment to independently attenuate the low pass output The BASS GAIN located on the terminal endplate of the unit is used both to set the level at the low pass output and control the range of the RBG 3 WAY Input allows the AX 5600 to accept input from modern 3 way head units allowing front to rear fading of the mid highs and Independent frequency and volume adjustment from the passenger compartment 2 Ohm Stability All 5 channels of the AX 5600 are stable to 2 ohms The power of the mid high Protection AX 5600 is protected against whopping 43 thermal over and under voltage and short circuit The separate power supplies of AX 5600 are individually protected against over current channels increase 17 from 4 to 2 ohms while the subwoofer channel increases a Amp Power 4 Ohms 800 75WX4 500WX1 1Q Total Watts Amp Power 2 Ohms 860 90WX4 500WX1 1Q2 Total Watts AX 600DE 3200DE Class DE Amplifiers Controls and Features INPUT SUB XOVER U S A O o ee2. WARNING All U S Amps require a grounded input connection DO NOT use ground loop isolation devices or high low conversion devices on the input of your U S Amp Wiring Instructions for AX TU600C 1000 2000 Power Output AX TU600C 165W X 2 42 300W X2 22 AX 1000 300W X 2 42 500W X 2 22 AX 2000 600W X 2 42 1000W X 2 22 Source Unit Cl Os HBL Positive 12V Remote Turn on Bridged Output AX TU600C E 600W X 1 42 Fuse Rating AX 1000 AX TU600C 60A 1000W X 1 42 AX 1000 100A AX 2000 AX 2000 200A 2000W X 1 42 Negative 12V to Vehicle Ground Use minimum 8 gauge Wire Positive 12V to Vehicle Battery WARNI NG NEVER use ground loop isolation on the input of your U S Amp It doesn t need it Wiring Instructions for AX TU4360C Source Unit O8SHHL 1 Positive 12V Remote Turn on WARNING NEVER use ground loop isolation on the input of your U S Amp It doesn t need it Front Left Front Right Speaker Speaker Positive 12V to Vehicle Battery Use minimum Negative 12V 8 gauge Wire fto Vehicle Ground Use minimum 8 gauge Wire Power Output 7T5W X A en 4Q 90W X 4 22 60A Rear Left Speaker 4 channel Operation Rear Right Speaker Vehicle Battery 11 to 15 volts DC Vehicle Ground Bridged Output 180W X 2 4Q 2 channel Operation DO NOT OPERATE AX 4360C BRIDGED MONO AT LESS THAN 42 PER B
3. JEN G Pe i SLAVE O L PWR PROT O MIN 50 Zon CLAss DE DIGITAL AXES US Amps AX e00 DE 1200 Warte DYNAMIC POWER INPUT ONE OHM STABLE DESIGN 600 Watts RMS POWER Shown here is AX 600DE but the diagram is also applicable to AX 3200DE a Amplifier Input The amplifier MUST receive input on BOTH RCA jacks for proper operation Input Gain is variable from 150 mV to 3 volts for full output Best results are achieved by adjusting the control to the lowest setting in relation to the output of the source unit Low pass Crossover Control For the internal amplifier adjustable from 50 Hz to 500 Hz 24aB Remote Bass Gain A two position removable plug that accepts the included RBG control harness to allow the amplifier volume to be controlled from the passenger compartment 5 The Magic Switch The far left Subsonic Filter position makes more efficient use of amplifier power by discarding frequencies below 36Hz The center XOver defeats the Subsonic Filter tor amplifier operation down to 5 Hz The far right Slave position defeats all amplifier controls to receive information through the Remote Bass Gain wires from another master amplifier This can be repeated as often as necessary with all slave units receiving Identical gain frequency and subsonic functions from the master amplifier A single Remote Bass Gain can be connected at any point to universally control the volume of the entire amplifier bank
4. Amp AX 1000 2000 N 2 Channel Amplifiers USAME WY Controls and Features YAQOO Q O OFF ON OFF ON 0 KI Wi ce MIN Q Soo SUB SuUBSONIC INPUT SUB XOVER FILTER GAIN FREQ RBG AX 1000 O OHM STABLE DESIGN U S A O O O Shown here is AX 1000 but the diagram is also applicable to AX 2000 Amplifier I nput The amplifier MUST receive input on BOTH RCA jacks for proper operation 2 Amplifier Output The low level output can be connected to other amplifiers 3 Input Gain is variable from 1 to 9 volts for full output Best results are achieved by adjusting the control to the lowest setting in relation to the output of the source unit Low pass Crossover Control For the internal amplifier adjustable from 50 Hz to 500 Hz 24caB Remote Bass Gain A phone jack that accepts the included RBG control harness to allow the amplifier volume to be controlled from the passenger compartment Low pass Crossover On Off Switch A 2 way switch which enables disables the low pass crossover feature 7 Subsonic Filter To optimize amplifier power in the audible frequencies a defeatable 36 Hz subsonic filter provides a 6 dB per octave roll off WARNING NEVER use ground loop isolation on the input of your U S Amp It doesn t need it la D AX TU4360C USSSA S EA 4 Channel Amplifiers Controls and Features lt The AX 4360C features a selectable two way electronic crossover with independent front a
5. DE 13 Amplifier and Crossover Input 2 Power amp Fuse Chart 14 Signal Level Input 2 Specifications 15 Gain Control Adjustment 2 Why Tubes 16 Batteries 3 VTCSD 16 Getting Wired 3 Benefits of Class DE 17 Amplifier Controls amp Features Note 18 AX TU600C 4 Never Never Never BACK AX 1000 2000 5 Warranty BACK AX TU4360C 6 AX 5600 7 Did You Buy the Right U S Amp There is a U S Amp for every purpose From raw power to exquisite sound quality and everything in between U S Amps offers state of the art technology to meet your every need INSTALLATION Am plifier Mou nting Choose an appropriate location to mount the amplifier s Make sure your choice is free from excess heat moisture and vibration Under the vehicle seat or in the trunk are common mounting locations Be sure the amplifier receives adequate ventilation to its heat sink and is positioned away from flying luggage and people s feet Do not mount to the speaker enclosures Ventilation it is important to provide the amplifier with adequate ventilation to remove heat from the amplifier heat sink During high performance applications in which the amplifier may be exposed to extremely low impedance loads it may be necessary to provide external ventilation via a fan or some other means With proper ventilation the run time of the amplifier between thermal protection cycles can be greatly extended IMPORTANT NOTICE The Input of a U S Amp MUST be GROUNDED for proper am
6. EDING OF YOUR BATTERIES As mentioned before most batteries are built for the relatively light chore of starting the engine Unless you have the room and ambition to install an upgraded high powered alternator your system current requirements may exceed the charging capability of your car s electrical system When this happens you have to rely on the vehicle battery s to make up the difference Another factor to consider is voltage Although the electrical system is considered to be 12 volt the battery when healthy actually rests at 12 6 volts The average alternator outs out 14 4 volts when the engine is on because it is necessary to feed a battery higher voltage in order for it to charge GETTING WIRED Once you have established the current needs of your system it will be of the UTMOST IMPORTANCE to properly fuse the amplifier Remember power connections are always the last thing There cannot be enough emphasis placed on the importance of proper fusing Fuses prevent catastrophes Always fuse each U S Amp product at or less than the recom mended amperage Another major consideration is wire If you wish to build a truly high powered system you must take into account the total amperage requirements of the system and select your wire gauge accordingly The following chart can be used as a guide WIRE GAUGE and AMPERAGE Guide These are real numbers right out of the 1951 U S Federal Electronics Code Boo
7. IER DIRECTLY TO A SPEAKER ENCLOSURE OR ANYWHERE ELSE WHERE SEVERE VIBRATION IS PRESENT Protect your investment Use Common sense Make sure the spot you choose is well ventilated and free from dirt and moisture NEVER USE YOUR U S AMP BELOW THE RATED MINIMUM IMPEDANCE Remember when you bridge your amplifier each channel sees one half of the load hence at 4 ohms bridged each channel is operating at 2 ohms U S Amps makes the FAILURE TO OBSERVE THIS BASIC RULE WILL RESULT IN A SENSELESS WASTE OF POWER AND PERFORMANCE and could damage your amplifier Limited Warranty U S Amps warrants all manufactured electronic products to be free from defects in material and workmanship for a period not to exceed TWO YEARS from the date of purchase IMPORTANT WARRANTY NOTICE U S Amps will only warrant and service products displaying valid U S Amps serial numbers WARRANTY SERVICE WILL ONLY BE PERFORMED WHEN THE UNIT IS ACCOMPANIED BY A COPY OF THE ORIGINAL SALES RECEIPT FROM AN AUTHORIZED DEALER All product returned to U S Amps for service MUST be accompanied by a Return Authorization Number issued by U S Amps in advance of shipment The Return Authorization Number must be clearly and conspicu ously displayed on the shipping carton or U S Amps will refuse delivery For Return Authorization Numbers first call your U S Amps dealer you purchased the products from The dealer will help you to obtain Return Authorization Numbers This warranty extends
8. RIDGED CHANNEL Wiring Instructions for AX 5600 Source Unit WARNING NEVER use ground loop isolation on the input of your U S Amp It doesn t need it Front Left Positive 12V Remote Turn on Speaker Front Right Speaker Positive 12V Power Output to Vehicle Battery p pa 75WX4 4Q 8 gauge Wire fto Vehicle Ground Use minimum 8 gauge Wire s d 6 6 6 6 SA eq Sub Woofer Output Vehicle Battery 500W X1 12 11 to 15 volts DC Vehicle Ground Rear Left Rear Right Speaker Speaker Note The front and rear channels of the AX 5600 Wiring Instructions for AX 600DE SPECIAL NOTE Class DE amplifiers are single ended mono designs and are not bridgeable BE SURE the TOTAL LOAD of ALL connected speakers does not fall beneath 1Q Choose one of three possible connections shown below Source Unit Positive 12V Remote Turn on Power Output AX 600DE 250W X 1 4Q 400W X 1 22 600W X1 12 Negative 12V to Vehicle Ground Use minimum 8 gauge Wire Vehicle Battery 11 to 15 volts DC Vehicle Ground WARNI NG NEVER use ground loop isolation on the input of your U S Amp It doesn t need it Wiring Instructions for AX 3200DE SPECIAL NOTE Class DE amplifiers are single ended mono designs and are not bridgeable BE SURE the TOTAL LOAD of ALL connected speakers does not fall beneath 1Q WARNING NEVER use ground loop
9. e transistor amps louder cooler more abusable and less expen sive than tubes but to this day they ve been unable to make any solid state amp sound as good as a tube amp So our engineer got to wondering What if combined the sonic character of a vacuum tube with the drive capabilities of solid state Well the result is the U S Amps VTCSD hybrid amps Using the signal path directly out of the tubes as a steering signal and the following drive signal wave from the transistors as the motor with absolutely no negative feedback as a corrective to the transistor s waveform we achieved the most detailed pleasing articulated sound available in mobile audio today C ii anA ITET TOTP RT TE x Ie F i ETTE Ri P Tube In Tube Out VTCSD Vacuum Tube Current Sync Drive Hybrid Tube Transistor Amps Uneven Clipping Solid State Amplifier Odd order Harmonics Solid State Input Low Voltage Smooth Low Low Current 7 Tube Voltage Negative Feedback Listening Fatigue WA Transistor Switching Compression Noise and Coloration Classic Vacuum Tube Amps w Output Transformer High Voltage Low Current The resultant signal Signal from Output Tube is Output is soothing and Transformer pleasing converts Voltage Energy fed into Output Into Transformer Current Tube Input Low Voltage Low Current Yet lacks much of the tubes original dynamic ran
10. f L C Low i i D D amp q bk D k i 7 j k x r i j 4 i Sa Se amp gt N H e d CAN n ei oaa A series a Pe Owners Manuals er ua ode gin Cunale ff ent U S Amps All rights reserved Thank you for choosing U S Amps You have purchased the finest product of its type available Each product is tested and built in our California factory You won t just listen to your U S Amp you ll experience it When properly installed this unit will provide years of trouble free service This manual is written for the experienced installer Please read it ALL before installa tion You may need to make changes in your installation to properly connect and operate this fine product If you are unfamiliar with the terminology and concepts within we strongly recommend you seek the assistance of an Authorized U S Amps Dealer or other car audio professional Authorized Dealers can be located on the U S Amps web site www usamps com We can be reached by e mail at sales usamps com but please be patient with us and give us a few days to respond Remember protect your hearing and enjoy your U S Amps Table of Contents Thanks Caution and Contacts 1 AX 600DE 3200DE 8 Table of Contents 1 Wiring I nstructions Did You Buy the Right U S Amp 2 AX TU600C 1000 2000 9 I nstallation AX TU4360C 10 WARNI NG 2 AX 5600 11 Amplifier Mounting 2 AX 600DE 12 Ventilation 2 AX 3200
11. ge 1a 1 D Vacuum Tube Current Sync Driv Positive Current Sync Direct Input 9 Input signal is fed i D DIRECTLY into the tube ra There are no solid state The original high voltage tube signal is joined by gain stages or processors a null gain current following circuit that is pulled in the signal path to the voltage rails by an opposing pair of current syncs providing a sort of amplifier power steering to deliver speaker driving power without taxing the character of the original tube voltage content Negative Current Sync VTCSD continued VTCSD follows the high voltage tube signal STRAIGHT INTO THE SPEAKERS adding only current in a form of amplifier power steering free from voltage gain or negative amplifier feedback Vaccum tubes are renowned for their high dynamic range and smooth emphasis of even order harmonics The transformer less VTCSD circuit brings out hidden qualities of the vacuum tubes including excellent frequency response smooth clipping and high signal to noise ratio VTCSD divides audio signal amplification in two separate areas voltage and current By starting with the vacuum tube as a source of high voltage vacuum tubes operate at four times the voltage of transistors VTCSD adds a second solid state amperage amplifier The amperage amplifier is a null gain circuit driven by current syncs that mirror the voltage signal and provide torque
12. isolation on the input of your U S Amp It doesn t need it Source Unit cl O8 HHL Positive 12V Remote Turn on Power Output 1200W X 1 42 2500W X 1 22 3000W X1 12 Negative 12V to Vehicle Ground Use minimum 8 gauge Wire Positive 12V to Vehicle Battery Use minimum 4 gauge Wire U S Amps Amplifier Power amp Fuse Watts per Channel MODEL 42 22 AX 1000 300W X 2 500W X 2 AX 2000 600W X 2 1000W X 2 AX 5600 75WX4 90W X 4 AX 600DE 250W X1 400W X 1 AX 3200DE 1200W X 1 2000W X 1 AX TU600C 165W X 2 300W X 2 AX TU4360C 75W X 4 90W X A AX 2000HC 150W X 2 300W X 2 Copyright 2007 U S Amps All rights reserved Specifications are subject to change without notice 12 N A 500W X 1 Sub 600W X 1 3000W X 1 N A U S Amps Amplifier Specification CG GE 0 AX TU600C 600W X 1 4Q lt 0 05 150 Vus AX TU4360C 180WX2 4Q lt 0 05 150 Vus WX1 4Q AX 2000HC Surw x io iQ lt 0 025 150 Vus Copyright 2007 U S Amps All rights reserved Specifications are subject to change without notice Measured at 4Q 14 4V at the circuit board VW Why Tubes You may know that a transistor is a modern efficient less expensive version of a vacuum tube which is the device that made sound recording and reproduction possible in the first place Now the electronics industry has been trying for many years to equal the sound quality available from tubes They have been able to mak
13. k It takes real wire to do real work For each 100 watts when playing music count on 10 amps average of average current draw la N AX TU600C USAME J 2 Channel Amplifiers Controls and Features SUBSONIC HP OOR FILTER FREQ VTCSD TECHNOLOGY o T ml KI O e s000 A A a Amplifier Input The amplifier MUST receive input on BOTH RCA jacks for proper operation 2 Amplifier Output The low level output can be connected to other amplifiers 3 Input Gain is variable from 1 to 9 volts for full output Best results are achieved by adjusting the control to the lowest setting in relation to the output of the source unit Low pass Crossover Control For the internal amplifier adjustable from 50 Hz to 500 Hz 24aB Remote Bass Gain A phone jack that accepts the included RBG control harness to allow the amplifier volume to be controlled from the passenger compartment 6 Low pass Crossover 3 way Switch A 3 way switch which selects the full range high pass low pass crossover feature 7 Subsonic Filter To optimize amplifier power in the audible frequencies a defeatable 36 Hz subsonic filter provides a 6 dB per octave roll off 8 High pass Crossover Control For the internal amplifier adjustable from 50 Hz to 500 Hz 12aB WARNING All U S Amps require a grounded input connection DO NOT use ground loop isolation devices or high low conversion devices on the input of your U S
14. nd rear mid high frequency adjustment and 2 ohm per channel stability Power is provided by four 75 watt channels that can be bridged as front and rear pairs into a 4 ohm load for a total of 180 watts per bridged pair WARNI NG NEVER use ground loop isolation on the input of your U S Amp It doesn t need it re REAR SUB an E Ee Q LP_HP Fu LP HP FuLL AE g g ER O O AG 56 CC D PwR PROT O Max Max s000 so 800 s0600 FRONT REAR Oax russ600 Kale L TA FRONT REAR O INPUT INPUT FOUR CHANNEL AMPLIFIER a Amplifier Input The amplifier MUST receive input on BOTH RCA jacks for proper operation Input Gain is variable from 1 to 9 volts for full output Best results are achieved by adjusting the control to the lowest setting in relation to the output of the source unit Low pass Crossover Control For the internal amplifier adjustable from 50 Hz to 500 Hz 24aB 4 Remote Bass Gain A phone jack that accepts the included RBG control harness to allow the amplifier volume to be controlled from the passenger compartment 5 Low pass Crossover 3 way Switch A 3 way switch which selects the full range high pass low pass crossover feature AX 5600 5 Channel Amplifier Controls and Features cranny The 5 channel AX 5600 features a selectable 3 way electronic crossover with independent front and rear mid high frequency adjustment dual power supplies 2 ohm per channel Stability and a Remote Bass Gain
15. 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 electronic products amplifiers Incidents of misuse abuse neglect or unauthorized modification will not be covered within the terms of this warranty U S Amps reserves the right to refuse warranty service under such conditions U S AMPS WILL NOT BE RESPONSIBLE FOR ANY DAMAGES WHETHER INCIDENTAL OR CONSEQUENTIAL RELATED TO THE USE OF THIS OR ANY OTHER PRODUCT BEARING OR SOLD UNDER THE U S AMPS BRAND NAME USE THIS PRODUCT AT YOUR OWN RISK IMPROPER USE OF THIS PRODUCT CAN RESULT IN PROPERTY DAMAGE BODILY HARM AND OR OTHER DAMAGE U S AMPS ASSUMES NO RESPONSIBILITY FOR YOUR HEALTH OR SAFETY Use nD WWwW USaMmps com
16. plifier operation The use of external ground isolation dividing devices is UNNECESSARY and may cause severe amplifier and or system damage Amplifier Input u s Amps feature a unique isolated input section that will accept Signal voltages from 1 to 9 volts The input section also provides amplifier ground isolation for the prevention of system and engine noise The unique configuration of the U S Amps input necessi tates a correct input ground and is not compatible with external ground isolation devices Signal Level BTL Input This product will accept line and signal level and can be used with most BTL high powered sources To use a BTL source observe the following 1 BTL outputs have two hot non grounded leads per channel Select ONE per channel and connect it to the center conductor of the RCA input cables going to the amplifier input 2 Insulate and disregard the second wire of each BTL output pair 3 Ground the shield wires of the RCA cable to the metal body of the source unit Gain Control Adjustment Always start with the gain control fully counter clockwise all the way down or just slightly open Adjust the source unit volume as high as possible without distortion Increase the amplifier gain until the amplifier distorts then turn the gain down slightly until the signal becomes clear It is desirable to operate the amp at the lowest possible gain setting to help reject spurious system noise CARE AND FE
17. to the Speakers in perfect synchronization with the voltage content that neither distorts or colors the original tube sound The result are astonishing All of the intensity transience and frequency response of the vacuum tube which can operate at MUCH higher output voltage than audio transistors CLASS D E Benefis of Class DE aed D U S Amps continues to push the technological envelope with the introduction of two new digital models that combine the attributes of D lass amplifiers with the versatility and practical fidelity usualyy expericenced only with standard Class AB designs Thsi bold leap forward in digital technology allows for 90 effieciency under extreme dircumstances that turn other digital amplifiers to toast As cars become more and more energy efficient and provide less available battery power Class DE represents the best power output to current consumption available on the market today e Combines class D attributes with the versatility and practical fidelity of class AB designs e Allows for 90 efficiency under extreme circumstances that turn other digital amplifiers to toast e Represents the best power output to current consumption VW NEVER NEVER NEVER NEVER USE A U S AMP WITH A GROUND LOOP ISOLATOR ON THE RCA S OR AN ISOLATED INPUT SIGNAL U S Amps are input isolated at the factory and require an input ground for proper operation NEVER INSTALL OR MOUNT YOUR AMPLIF
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