Soundstream Technologies REF4.400 Car Amplifier User Manual
Contents
1. 1048 Odi 12085 0 2 10R 02 3301 12 G LEFT BALANCED IN Control Definitions Alrighty here comes the fun stuff We re going to break this down to it simplest form so that there is no way you can possibly do any damage in the installation process to your audio system We re going to explain in detail how every single knob and switch work rather than turn you loose on a sophisticated amplifier have problems READ EVERY THING Trust us it ll be worth it Before you do anything undo the ground cable from the battery Power Terminal Block GND This is the Ground connection Bolt the Ground cable to a bare metal part of the chassis frame Do NOT us self tapping screws or seat seatbelt bolts 12V This is the Power Connection This cable gets connected directly to the battery You MUST use a fuse holder or circuit breaker within 18 of the battery All cables ran through the firewall must be protected by a rub ber or plastic grommet If you have multiple amplifiers the main fuse or circuit breaker at the battery should be the sum of all fuses or slightly less REM This is the remote Turn On connection Connect to the amplifier output or power antenna output of the source unit If the unit does not have a switched 12V output you can use another switchable 12V 2 Speaker Terminal Block This is the Speaker s Connection All compo2. Hi Tam 600 bhi dk 1 Gita Inductor and Capacitor passive crossovers must be at the same frequency or underlapped but never overlapped If this does not make sense drop what you are doing and take your car to a professional Soundstream dealer CAPACITOR HIGH PASS FILTER 2 CHANNEL SYSTEM DESIGN 4 REF2 370 REF2 640 SOURCE UNIT INPUT SOURCE PLOW PASS r HIGH PASS i 55 GAIN INPUT T 000 2222002026 AA i 4 8 Ohms 1 4 8 Ohms 15 4 8 Ohms 4 8 Ohms 4 CHANNEL SYSTEM DESIGN 1 REF4 760 REF4 920 SOURCE LINIT INPUT SOURCE mr mM ACH rr 2 4 zu 2 2 4 Ohms Li ul Ti www ara 0000 ns or Sa m we BALANCED H 555557559 At I PA 4 CHANNEL SYSTEM DESIGN 2 REF4 760 REF4 920 2 4 Ohms SOU RCE UNIT INPUT SOURCE H GHP A ON y rerni O 0000 o dika i i f 4 8 Ohms CE AA AE I y PENCEY DO 0 O i ido as a e
3. INPUT MODE a SPEAKER INPUT MODE HIGH PASS INPUT MODE LOW PASS HIGH PASS uso i O FREQUENCY FREQUENCY HAWKINS FREQUENCY O 20H O O amp O Q O REF4 760 POWER INPUT SPEAKER OUTPUT FREQUENCY GAIN GO k 0 2 odu 1298 30Hz CHIBS o CHICHE 15Hz Ibas amp REF4 920 E MODE LOW 55 HIGH FAS 1 FREQUENCY HAWKINS FREQUENCY SPEAKER OUTPUT ALT HOCE r HGH PASS FREQUENCY O FREQUENCY O ares O de EL xin O Q kin Ee 370 pda 1208 some ai ma FIORE 9 JISHI 4 CHACHI _ Controls and Terminals REF1 500 PHASE LOW PASS r SUBSONIC REMOTE BASS EQ 1 INPUT CONTROL U FREQUENCY FREQUENCY HAWKINS BOOST FREQUENCY A 187 e O O gt 200Hz 50Hz 1098 Oda 1208 vv 0 2 LEFT o RIGHT BALANCED IN 1000 PHASE LOW PASS r SUBSONIC REMOTE r BASS Ea GAIN INPUT CONTROL SPEAKER 4 FREQUENCY FREQUENCY HAWKINS BOOST FREQUENCY 3 00 O
4. 7 1842 si 2 CHICHA 4 CHANNEL SYSTEM DESIGN 3 REF4 760 REF4 920 SOURCE UNIT Jel i CO 099 009 E A CHICHA i Bi i 2 4 5 4 INDUCTOR CAPACITOR LOW PASS FILTER er HIGH 55 FILTER SUB WOOFER 4 8 Ohms 2 4 Ohms 2 4 Oh i 2CH 1 HIGH PASS FILTER INDUCTOR PAN LOW PASS FILTER SUB WOOFER 4 8 Ohms o El i an RADNE To HAT PN ara i i aT O Inductor and Capacitor passive crossovers must be at the O o O i same frequency or underlapped but never overlapped If i this does not make sense drop what you are doing and take your car to a professional Soundstream dealer 17 Subwoofer Wiring Diagrams 1 CHANNEL SYSTEM DESIGN 1 REF1 500 REF1 1000 SOURCE m ra z 1 f 0 INPUT Series Parallel Three Dual 2 Ohm Net Impedance 1 33 Ohms Parallel Three Single 4 Ohm Net Impedance 1 33 Ohms Series Parallel Two Dual 2 Ohm Net Impedance 2 Ohms Parallel Two Dual 4 Ohm Net Impedance 1 Ohm Parallel Two Single 4 Ohm Ne
5. SOUNDSTREAM Don t be a fool by throwing away this manual Grab a couple brews sit on your butt amp READ THIS You will NOT be able to set this amplifier properly unless you thoroughly understand the sophisticated pre amp section of the amplifier You are now the owner of what may be the finest car audio amplifier ever made Please read this manual in its entirety These brand new long awaited Reference amplifiers are the finest amplifiers we have ever produced and they WILL change the way you hear and feel music REF1 500 REF2 370 REF4 400 REF1 1000 REF2 640 REF4 760 REF4 920 Table of Contents Reference Lives Features Specifications Installation Controls and Terminals Control Definitions System Diagrams Subwoofer Diagrams Troubleshooting 4 5 8 10 11 13 14 17 18 19 20 Reference Lives Can you believe that it has been over a decade since the legendary Soundstream Reference amps graced the car audio industry Maybe you bought this amplifier because the best amplifier you ever had was a Reference from back in the day Maybe you bought it for its legendary performance Regardless of the reason we know you ll love your new SS Ref amp will appreciate its unparalleled quality When we first decided to reintroduce the coveted amplifiers we just wanted something as fine as the originals They were finer than most amplifiers in the marketplace today After failing to deliver for a couple of years we decid
6. Ummm If you do not know what goes here get over to your local Soundstream dealer immediately Balanced Signal Inputs Using our BLT Balanced Line Transmitters you can achieve balanced noise free signal transfer This is a MUST and no brainer for any audiophile sound quality competitor or anybody serious about their music 9 CH1 amp 2 Signal Mode There are two options here for the signal processing You can either choose CH1 amp 2 HP FR for High Pass or Full Range operations or you can choose COPY CH384 making channels 1 amp 2 receive the same processing as channels 3 amp 4 This is handy if you want channels 1 amp 2 to be identical to 3 amp 4 or if you need low pass or band pass signal Understand that this bypasses EVERYTHING so that the front channels are iden tical to the rear channels Phase Switch This switch changes the phase of the woofer from 0 to 180 degrees Subsonic Part of the Hawkins circuit this is a patented circuit developed by Soundstream many years ago Haw kins has 2 controls but 3 functions One of the controls is the boost and it is from 0 10dB The second control is the frequency Whatever frequency you select will be the frequency that is controlled by the adjustable boost The third function is a tracking subsonic filter Once the boost frequency is set all frequencies below that point are blocked to prevent damage to the speakers For example your subwoofer starts to lose output at 50Hz
7. You can set the frequency to 40Hz and boost up to 10dB but you do not have to worry about super low fre quencies damaging your speakers because no music material below 40Hz will go to the subwoofers Or let s say your subwoofer plays just fine but at 20Hz tones it starts to flutter and get distorted Hawkins can be set at 25Hz and not use the boost but still take advantage of the subsonic filter subwoofer protection 12 Remote Control This the port for the Remote Control so you can use the supplied unit to control the gain from the front of the vehicle 13 Input Mode When 4CH mode all 4 channels of signal are required and fadability is in effect When 2 mode only 2 channels of signal are required and CH1 amp 3 get the same signal and CH2 amp 4 get the same signal Fadability is lost in 2CH mode System Diagrams 2 CHANNEL SYSTEM DESIGN 1 REF2 370 REF2 640 INPUT SOURCE mm HIGH rm BASS GAIN INPUT 909220 O 2 CHANNEL SYSTEM DESIGN 2 REF2 370 REF2 640 INPUT SOURCE MODE PARI HGH 55 1 r BASS GAIN 609 699 ESAPAAAR O 2 CHANNEL SYSTEM DESIGN 3 REF2 370 REF2 640 SOURCE UNIT gt car csr INPUT SOURCE pe 1 INDUCTOR LOW PASS FILTER HIGH Pai rm GAIN MODE FLOW 5 4 ME a in in O O a b
8. Avoid sharp edges that could chafe through the insulation Ground cable to A pa i bare metal chassis frame with nut amp 4 bolt screws or seat seatbelt bolts Controls and Terminals REF2 370 POWER INPUT REF2 640 POWERINPUT SPEAKER OUTPUT 0000 12V mre O 2 SPEAKER OUTPUT r HIGH PASS r BASS EQ FREQUENCY HAWKINS BOOST FREQUENCY 55 62 O 50Hz 800Hz 151 270Hz ods Tode ods 1208 30Hz 80Hz 250Hz AkHZ 225Hz MODE rLlOW 554 1 FREQUENCY a O Lipi MODE rLOW PASS r HIGH PASS r BASS EQ wm HFFR X FREQUENCY O FREQUENCY HAWKINS BOOST FREQUENCY AL pep O O x10 O O QO 800Hz 15H 270Hz ods 12 30Hz 250 2 225 V a GAIN D WV GAIN 54 INPUT Es 10R 02 3301 O INPUT BALANCED IM LEFT V RIGHT BALANCED IN amp HIGH PASS INPUT MODE BALANCED IH REF4 400 MODE LOW PASS FREQUENCY INPUT HP A FREQUENCY POWER INPUT SPEAKER OUTPUT PEAKER HIGH PASS FREQUENCY GAIN A MOG O o J 15H jo 0 24 108 02 3302 CHI H a _ 15Hz BB Lina mi m D
9. PROFESSIONAL SOUNDSTREAM DEALER 11 Crossovers continued HAWKINS This is a patented circuit developed by Soundstream many years ago Hawkins has 2 controls but 3 functions One of the controls is the boost and it is from 0 10dB The second control is the frequency What ever frequency you select will be the frequency that is controlled by the adjustable boost The third function is a tracking subsonic filter Basically at the frequency point you choose to boost all lower frequencies will be blocked by the tracking subsonic filter to avoid damage to speakers For example your subwoofer starts to lose output at 50Hz You set the frequency to 40Hz boost up to 10dB but you do not have to worry about super low frequencies damaging your speakers because no music material below 40Hz will go to the subwoofers Or let s say your subwoofer plays just fine but at 20Hz tones it starts to flutter and get distorted You can set the Hawkins at 20 25Hz and not use the boost but still take advantage of the subsonic filter sub woofer protection Bass EQ This circuit allows you to choose a frequency between 30Hz and 80Hz and boost that frequency by 0 12dB Xover Mode Switch Select HP FR for High Pass Full Range and only the HIGH PASS functions will work The High Pass filter is never off but can be set to 15Hz which passes the entire audible spectrum to be reproduced If you select LP BP for Low Pass and Band Pass then t
10. c 15 240Hz or 15 210Hz or 15 240Hz or 15Hz 4kHz 15Hz 4kHz 12dB Slope 0 10dB Hawkins Boost 275 4 1kHz 260 4kHz 240 4 1kHz 50 210Hz or 50 250Hz 820 4kHz 820 4 7kHz 15 220Hz or Channels 384 HPF 12dB Slope NN 15Hz 1kHz 15Hz 4kHz 255 4 1kHz 50 250Hz or Channels 384 LPF 12dB Slope NN 55Hz 4 3kHz 50Hz 4kHz 800 3 8KHz EN A A TI e e Channels 1 amp 2 LPF 12dB Slope Installation Before installing any audio eguipment it is good practice to disconnect the ground terminal on the battery to avoid dam age to the vehicle or audio equipment Failure to do this means you re a few brews short of a 6 pack and you probably already acquired the nickname of Sparky or Smokey Not Do NOT hook the ground cable back up to the bat tery until the rest of the wiring is complete Factory ground wire may need to be upgraded espe cially if it is smaller than the Pork power wire frayed or broken anery terminal Fuse must be installed within 18 of battery Run signal cables RCA and remote turn on lead down the opposite side of the vehicle of the power wire to avoid radiated noise Drill a hole in the firewall amp use a rubber grommet to keep wire from shorting Run the cables under the carpet near the side of the vehicle Be careful not to drill or screw into the wires when replacing trim
11. ed to hold back until we were 100 certain that there was nothing else we could do to make the amplifiers any better Many crappy clone amps popped up in Germany and Asia but none were real Soundstream Reference amplifiers and they certainly did not come from us We feel confident that we came up with everything you d ever want The preamp controls are extensive The circuitry is very advanced Even the painstaking task of making sure every board trace is in the perfect location yielded phenomenal results damping factors from gt 1500 to gt 3000 Don t fall for the foolish tale that this doesn t matter The ability of an amplifier to accurately control the speaker is of critical importance Duh Most amplifier manuals get thrown in the trash or never even make it out of the box The new Ref amps are very sophisticated and the silk screening on the front of the amplifier cannot begin to unfurl the powers of the new preamp sections It would not be wise to ditch this manual without thoroughly reading it over first So grab a beer a glass of wine or a stupid latte and take a few minutes to chill out and absorb the intensity of the new SS Refs Actually if you are reaching for a latte you re a fruitcake and do not deserve this amplifier Grow a pair Grab a 6 pack of your favorite mi crobrew and read the freakin Note while drinking some great beer is one of life s greatest pleasures please do not drink the whole 6 pack and attempt
12. he LOW PASS function works as well You can use the Low Pass in conjunction with the always on High Pass to band pass the signal to the drivers For example Let s say you have 3 way components consisting of a 1 tweeter 4 midrange and a 6 5 midbass Your 4 and 1 are on another amplifier You can set the midbass to play just the midbass frequencies by setting the LOW PASS to 400Hz and setting the high pass to 60Hz This will effectively give you a dedicated midbass region that will not overlap into the midrange frequencies or subwoofer frequencies Input Gain While most people set this control by ear to how loud they want their music this is not the intent of this control The range is from 0 2 volts to 9 volts The control is meant for matching to the source unit s output sig nal voltage For example if you have a unit with low output voltage you would probably have the control set fairly high towards the 0 2V range A lot of head units have 4 volts of signal voltage which mean that your con trol would be set in midway through the range If you happen to have a line driver signal booster that yields 9 volt or more you will set the gain at the minimum position In all of these examples when properly level matched the amplifier will put out full volume Setting the control above the proper point may cause damage to the amplifier and speakers and can result in poor sound quality and overall undesirable results RCA Signal Inputs
13. nents coaxials and subwoofers connect here Crossovers These controls allow you to pass and block frequencies to each driver This is one of the most important parts of tuning any audio system LOW PASS This control allows you to pass only frequencies lower than the frequency you choose to the driv ers For example if you powering a sub woofer and you choose 70Hz then only 70Hz and lower tones will be passed through to the subs while all unwanted higher frequencies above 70Hz will be blocked HIGH PASS This control allows you to pass only frequencies higher than the frequency you choose to the driv ers High Pass crossover filters below 50Hz are also considered subsonic filters Multiplier Switches Sometimes you may need a range that is not within the range supplied by the control po tentiometer In this case if the amplifier has multiplier switch the range can change to accommodate your needs For example let s say you have 4 channel amplifier and you want to put the tweeters 17 on the front channels and the midbass 6 5 on the rear channels and use all electronic crossovers You can set the High Pass for the tweeters at 4kHz The low pass if it as two ranges may be from 50 800Hz which is not high enough By using the multiplier switch that same control can change the range from 50Hz 800Hz to 250Hz 4kHz If this doesn t make sense and you do not understand frequencies clearly PLEASE TAKE YOUR TO A
14. round Eliminating Ground Loops and Noise e Sequenced Delays Eliminate Residual Power Up Power Down Pops e Final PCB Layout Designs are a culmination of examination and fine tuning of all circuit elements to work in harmony as a whole e Hawkins Boost Control Proprietary Bass Equalization Continuously Variable Crossovers Tri Mode Capable PSU e Pulse Width Modulated Large T0218 MOSFET Transistors High Volume Low ESR Capacitance Banks Compensate Power Supply Ripple Currents Extra Low Current Drive Stage Increases Efficiency amp Sound Clarity Individually Regulated Preamp Crossover Power Supplies Ensure Signal Purity e Separated Capacitor Charging Discharging Current Paths Prevent Rail Switching Spikes Ground Traces from En tering Signal Stages Resulting in Distortion Mono block Models True Class G Circuitry and Regulated MOSFET Power Supply This allows the Subwoofer Amplifiers to Yield the Same POWER at 1 2 ohms and Regardless of Operating DC Voltage You can use almost any amount of woofers and of any impedance and wire it to the amplifier safely See the options in the back of the manual Common Specifications Bass Boost 0 12dB 30Hz 80Hz Input Sensitivity 0 2V 9V 5 mesnu PP pusrowrg ens n re ro ne PP permenan Po Po Po dT Dimensions 2 25 h x 9 875 w 16 06 20 25 55mm x 250mm 408mm 514 5mm Ch 1 amp 2 HPF Hawkins Subsoni
15. t Impedance 2 Ohm 18 Subwoofer Wiring Diagrams Series Parallel Four Dual 2 Ohm Net Impedance 1 Ohm Series Parallel Four Dual 4 Ohm Net Impedance 2 Ohm Series Parallel Four Single 4 Ohm Net Impedance 1 Ohm 19 Troubleshooting SYMPTOM CHECK REMEDY Confirm remote turn on lead is connected at the amp and at Is the Status LED illuminated GREEN NO the radio switched 12Volts NO SOUND lean contacts on fuse holder erify ground is secure SIA Is the Status LED illuminated GREEN Yes pa AN Does remote wire have 12V Check at source and amp Check fuses Burnt broken detached Check speaker wire Look for shorts pinches or disconnected terminal MG Ba Swap left with right If the bad side began working the prob Check RCAs p lem is before the amplifier AMP SHUTS DOWN Check speaker load 2 that the load does not drop below the specified ohm Check temperature Wait for amp to cool down STATUS LED IS ON RED Speakers shorted Check to see if it is the wire or the speakers themselves SMOKE CAME OUT Either you spilled your beer on it or did not read back ina this manual and follow the directions cont jesi e Rs Is volume loud enough for others to hear To avoid the opposite sex buy a different brand of amplifier 20 OJO 0 2
16. to work with electron ics Drinking fizzy yellow light beer is for wussies and will probably make your amplifier spontaneously combust Seriously it happens Sound stream engineers are willing to install your amplifier for you if you send them a plane ticket for two and cover all expenses including great beer Features In the 805 it became popular to use acronyms for amplifier features and technologies In some cases these acronyms were nothing more than fancy words put together cleverly to form an acronym not worth its weight in poop Sales people memorized the silly acronyms but rarely knew what the feature encompassed The features below are straight forward facts about the amplifiers that make them yield audio nirvana General e Full Signal Path Low Noise Distortion Circuitry Topology Optimal Component Layout for Minimal Distortion Induction amp Signal Separation Full Differential Feedback Surrounding Power Amp Stages directly from Speaker Terminals resulting in Uncolored Sound Reproduction and Elimination of Ground Loops e Differential Drives Divide Pre Amp amp Power Amp Stages Eliminating Ground Looping Triple Darlington Audio Output Stages e Output Stage Bias Individually Sequenced Optimizing Sound Quality Close Tolerance Signal Path Components 1 Resistors amp 5 Capacitors Stout 2 Oz Copper Traces Effortlessly Transfer High Volume Internal Current Differential RCA Inputs Isolate 12V Audio to G
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