Soundstream Technologies 404s User's Manual
Contents
1. s sssssssseeneeessesrserrrnreessee 8 e A fail safe thermal protection circuit activating at 95 C p 3 Selecting Input MOCES ccceeeeeeeseeeeeeeeeeeeeteeeeeneeeeeeeeeeeeeees 9 Your amplifier also incorporates an innovative Fault Diagnosis system that identifies a blown power supply fuse Wiring with Diagram ccccceeeeeeeeeeeeeteeeetenteeeeeee 10 11 NOTE If you experience blown main power supply fuses DO NOT increase values beyond the original fuse value Doing so will void your warranty and Installation and Mounting sssessseeseeeessseenerrnnrsssrrennrrnersserrrnee 12 LIL LOVGl SOUMING iii tine Niue E 13 System Installation Diagrams ccceeeeeeeeeeeeeeeeeeeees 14 17 TROUBLESHOOTING Protection Circuitry S250 ences ae a es ee ae eee 18 PROBLEM CAUSE Troubleshooting ch toeett i Bet ee eit tees 18 No sound and LEDs are not lit e no power or ground at amp e no remote turn on signal Salita gh a eke NY Saas eM Nanoha oae ced 19 e blown fuse near battery Fault LED is lit e amp power supply fuse is blown or missing SPSCIICANONS es dey ceec cen cach an dain ents 19 Repeatedly blown amp fuse frequent activation of Smart Power Supply Circuit Channels 1 2 3 or 4 experiencing inter mittent output e speaker or leads may be shorted e verify adequate amplifier ventilation e activation of the internal circuit breakers e check to make sure channels 1 4 are driving a 1 2 o2. E HIGH PASS OUTPUT Gea a Oji 4 x 4 14 BTS ots Head Unit CROSSOVER SSS S O O Q JTO REFERENCE O Aa O tr wmihteusa se ms O Eko es AT 3 oj 888 3 SUBWOOFERS Lt 2 0 a A REFERENCE404s BOTTOM PLATE SWITCH SETTINGS n mN o Cy ae CHANNELS 1 amp 2 CHANNELS 3 amp 4 oo O2 A ao o gt COEN A 12v GND REMOTE MAIN FUSE Ss x At 1 ce uT Handcrafted In the U S A INTERNAL ll EXTERNAL A TAE To alg Tar j INPUT TOP VIEW PARTIAL FRONT VIEW BOTTOM VIEW PARTIAL a li MXEDMONO STEREO BRIDGE BRIDGED MONO EXTERNAL INPUT FROM CH 4OR INTERNAL INPUT FROM CH 2 SAMPLE SYSTEM 1 4 channels of input 4 channels of full range output Hated Hv GND REME Lon Re LEVEL LeINPUT R fie ck LEVEL LeINPUT R pee Snes OIO gt amp COd 099 2 8 99 O9 2 2 O LEFT RIGHT LEFT RIGHT H CHANNELS 2 i CHANNELS 3 4 l J l Ei Uo Gy Leg FULL RANGE SPEAKERS FULL RANGE SPEAKERS Head Unit REFERENCE404s BOTTOM PLATE SWITCH SETTINGS 7 yo L TE
3. SERIES AND PARALLEL WIRING Api REFERENCE Amplifier 404s 4 3 2 Channel cok Join a Power Amplifier 2 4 ohm drivers in parallel Fi ane ei o OWNERS MANUAL 4 Ohm AND INSTALLATION GUIDE 4 Ohm 4 4 ohm drivers in parallel 1 ohm 4 Ohm 4 Ohm 2 4 ohm drivers in series T E C H N O L O G I E S SOUNDSTREAM TECHNOLOGIES 120 Blue Ravine Road Folsom California 95630 USA ph 916 351 1288 fax 916 351 0414 rev A 4 25 96 CONGRATULATIONS You now own the REFERENCE404s Amplifier the product of an uncompromising design and engineering philosophy Your Soundstream REFERENCE404s amplifier will outperform any other amplifier in the world To maximize the performance of your system we recommend that you thoroughly acquaint yourself with its capabilities and features Please retain this manual and your sales and installation receipts for future reference Soundstream amplifiers are the result of American craftsmanship and the highest quality control standards and when properly installed will provide you with many years of listening pleasure Should yo
4. ee CHANNELS 1 amp 2 CHANNELS 3 amp 4 INTERNAL EXTERNAL FROM CH 1 MXEDMONO STEREO BRIDGE 1 amp 2 INPUT a MIXEDMONO STEREO BRIDGE ED MONO EXTERNAL INPUT FROM CH OR INTERNAL INPUT FROM CH 2 14 a oi OPNO 10 11 Inputs Channels 3 amp 4 RCA inputs 13 14 15 16 Key to Callouts Fault LED Indicates a blown fuse High Power LED Indicates amplifier power on in High Power mode Auto High Current LED Indicates amplifier power on in High Current mode 12V Connected to a fuse or circuit breaker then to the battery s positive post GND Main ground connection Bolt to a clean chassis ground in the vehicle REM Remote turn on input from the head unit Accepts 12V Speaker Output Connections Channels 1 amp 2 Input Level Channels 1 amp 2 independent input level controls Inputs Channels 1 amp 2 RCA inputs Speaker Output Connections Channels 3 amp 4 Input Level Channels 3 amp 4 independent input level controls Main Fuse Main power supply fuse Replace only with the same value fuse Coherent Stereo Bridge Mono Mixed Mono Switch Channels 1 amp 2 Select Bridge for bridged mono operation use right channel input Select Stereo for coherent stereo operation Select Mixed Mono for simultaneous stereo bridged mono operation Channels 3 amp 4 Input Select Selectable inp
5. or circuit breaker POWER UP Power up the system and look at the red High Power LED There may be a 12 INSTALLATION STEP 1 le COHERENT STEREO MIXED MONO BRIDGED MONO The REFERENCE404s amplifier has the ability to operate in any one of the following modes Coherent Stereo with identical left and right stereo channels for maximum fidelity Best choice for satellite speakers Use this mode unless Mixed Mono is necessary Mixed Mono in order to drive stereo and mono simultaneously works well for center channels It can be used anytime you need a summed mono channel Somewhat sacrifices sonic accuracy as additional circuitry is introduced to one channel In Mixed Mono the left channel is inverted see diagram below or on the bottom of the amplifier Bridged Mono for dedicated single channel operation ideal for driving subwoofers It is also used when large amounts of power are necessary for single speakers In bridged mono only the right channel input is active COHERENT STEREO L R MIXED MONO L R BRIDGED MONO In bridged mono only the right channel input is active NOTE If you intend to drive the REFERENCE404s amp in mono but have stereo outputs from your crossover or source unit you can put the switch in Mixed Mono but follow the normal wiring for Bridged Mono INSTALLATION STEP 2 WIRING POWER AND GROUND To ensure max
6. Supply 4 ohm power ratings are measured at m INTERNAL EXTERNAL 12 volts meaning substantially greater output in the real world when Bac te Sager a SINE the vehicle is running where voltages range from 13 2 to 14 4 volts pa MIXEDMONO STEREO BRIDGE ED MONO EXTERNAL INPUT FROM CH OR INTERNAL INPUT FROM CH 2 SAMPLE SYSTEM 3 2 channels of input with 2 channels of bridged high pass output External input to channels 3 amp 4 with an external crossover pondered 1ov GND REMONE QOJ LEVEL 4 2 CHANNELS 2 LeINPUTeR fie ok LEVEL LeINPUT R C CHANNELS 3 4 Head Unit SATELLITE SPEAKERS FAS SATELLITE SPEAKERS HIGH PASS OUTPUT CROSSOVER LOW PASS OUTPUT REFERENCE herercdadh nusa 33 5 BOO SUBWOOFERS REFERENCE404s BOTTOM PLATE SWITCH SETTINGS i CHANNELS 1 amp 2 MXEDMONO STEREO BRIDGE CHANNELS 3 amp 4 INTERNAL EXTERNAL FROM CH q 1 amp 2 INPUT am MXEDMONO STEREO BRIDGE ED MONO EXTERNAL INPUT FROM CH 4OR INTERNAL INPUT FROM CH 2 16 e Fault Monitor LED on the top panel notifies you of blown power
7. er in the passenger compartment or in the trunk of the vehicle away from moisture stray or moving objects and major electrical components To provide adequate ventilation mount the amplifier so that there are at least two inches of freely circulating air above and to the sides of it SWITCHES Set the Coherent Stereo Bridged Mono Mixed Mono and Channel 3 amp 4 input switches to the appropriate positions see pages 14 17 MOUNTING THE AMPLIFIER a Using the amplifier as a template mark the mounting surface b Remove the amplifier and drill the holes c Mount the amplifier to the surface using the provided hardware WIRING a Run and connect the audio signal and remote turn on cables to the amplifier from the source unit b Carefully run the positive cable from the amplifier to a fuse or circuit breaker within 18 of the battery c Connect the fuse or circuit breaker to the battery Leave the circuit breaker off or the fuse out until everything is bolted down d Secure the ground cable to a solid chassis ground on the vehicle It may be necessary to sand paint down to raw metal for a good connection NOTE There may be a small spark when connecting the power and ground lead to the amplifier for the first time This is caused by current rushing into the amplifier to charge the power supply capacitors and is completely normal 5 e Double check each and every connection f Re connect the fuse
8. hm per channel load or greater e speaker or leads may be shorted No output from e Select Internal from ch s 1 amp 2 0n Ch3 amp 4 channels 3 amp 4 with input on the bottom of the amplifier see 1 pair of RCA inputs pages 14 17 18 3 SAMPLE SYSTEM 4 2 channels of high pass input with 2 channels of stereo output DESIGN FEATURES 2 channels of stereo low pass input with 1 bridged channel of output eUncompromising Design and Construction including mil spec glass epoxy circuit boards and high current custom gold plated solid brass connections that will accept up to 4 gauge power ground wire eee Be stains ind inane the U S A 112v GND REMOTE ER ARF EER i GOLO vow a e Auto High Current Soundstream s newest exclusive circuit which OO o 000 82 00 a D automatically customizes your amplifier to its particular application a o gt cines A2 i High Current low impedance loads multiple subwoofers less than 2 ohms mono or High Power higher impedance loads 2 ohms mono and up F av a LEFT RIGHT CHANNELS 3 4 Coherent Stereo Mixed Mono selection for either pure stereo J R r operation or mixed mono for simultaneous stereo and mono Em IA AaS Chassisink Darlington Power Array Soundstream s SUBWOOFERS SATELLITE SPEAKERS overbuilding of the output sectio
9. imum output from your REFERENCE404s amplifier use high quality low loss power and ground cables The REFERENCE404s amplifier will accept up to 4 gauge power and ground cables Determine from the chart up to 10 up to 20 REFERENCE404s Soundstream Power40 or Soundstream Power40 Power80 4 ga 4 or 8 ga CIRCUIT BREAKERS FUSES EXTERNAL Like all audio components the REFERENCE404s amplifier must be fused near the battery A fuse or circuit breaker must be located within 18 of the battery This will prevent a fire in the event of a shorted cable See the chart below to determine the correct fuse value INTERNAL The REFERENCE404s amplifier is fused with automotive type fuses In the event of blown power supply fuses the Fault indicator on the front panel will light The fuses are accessible via a plastic plug on the bottom of the amplifier See the chart below to determine the fuse value Never replace the fuses with a higher value than what is supplied This may result in amplifier damage and will void the warranty REFERENCE404s Amplifier Fuse Values Amplifier Amplifier Fuse Battery Fuse REFERENCE404s 2 25 amp automotive 60 amp 10 WIRING cont REMOTE TURN ON Connect the Remote to the turn on lead from the source unit When 12 volts is received the amplifier will turn on SIGNAL CABLE Use a high quality cable that will be easy to install and has minimal signal loss to guarantee optimum perfo
10. n The same thing holds true if an outboard processor or crossover begins to distort before you have maximum output from the amplifier By setting all components to reach clipping at the same time you can maximize the output of your system For the REFERENCE404s amplifier follow the below procedure for the quickest easiest means of setting the levels 1 Turn the amp s input levels to minimum position fully counter clockwise 2 Set source unit volume to approximately 3 4 of full volume 3 While playing dynamic source material slowly increase the amplifier s input level until a near maximum undistorted level is heard in the system NOTE Even though the S N ratio with low output sources is better with the REFERENCE404s amplifier than others your best combination of output level and Signal to Noise ratio will be achieved when the input levels are set INSTALLATION STEP 3 1 4 INSTALLATION AND MOUNTING AMPLIFIER LOCATION The REFERENCE404s amplifier employs highly efficient circuitry and a unique Chassisink design to maintain lower operating temperatures Additional cooling may be required if the amplifier is located in a tightly confined area or when driving especially low impedance loads at extremely high levels When mounting the amplifier it should be securely mounted to either a panel in the vehicle or an amp board or rack that is securely mounted to the vehicle The mounting location should be eith
11. n incorporates multiple output transistors instead of a few for faster stronger power delivery The STEREO LOW PASS OUTPUT HIGH PASS OUTPUT transistors are sandwiched between the circuit board and the heatsink in a design called Chassisink to ensure cool efficient amplifier Head Unit operaia Head unt CROSSOVER PowerGrid Power Supply Design All power supply components are located near one another connected by thick wide PCB traces which ensures rapid high current delivery The entire power supply is isolated on one side of the circuit board while the audio stage is located opposite it guaranteeing minimal noise Ultra Low ESR Capacitance Bank Multiple small input power Capacitors are used to provide a lower ESR Equivalent Series Resistance which means more power in and out faster Smart Thermal Rollback Most amplifiers shut off when they get too REFERENCE404s BOTTOM PLATE SWITCH SETTINGS hot In the unlikely event the REFERENCE404s amplifier reaches 85 C it will gradually roll back its average power without affecting 7 A the dynamics Once the amplifier has cooled off it returns to full power output If overheating should continue a second thermal TE sensing protection circuit will shut off the amplifier if the heatsink Ne Je reaches 95 C CHANNELS 1 amp 2 CHANNELS 3 amp 4 Unregulated Power
12. rmance Soundstream s DL1 and SL1 are ideal SPEAKER CABLE The REFERENCE404s amplifier will accept up to 8 gauge speaker cable Use a high quality flexible multi strand cable for best performance and longevity ene lov GND REMOTE eee ares LEVEL LeINPUT R spel iR LEVEL LeINPUT R O a w w A w v gt Ge POPD 2 2 9O PY 2 2 0 l CHANNELS 1 2 l CHANNELS 3 4 To Remote N taneee Head Unit To Chassis Ground Fuse E TE at the y Battery E E g SATELLITE SPEAKERS SATELLITE SPEAKERS o h To 12V Battery Terminal
13. supply fuses e 1 2 ohm Drive Ability The REFERENCE404s amplifier is designed to drive virtually any load all the way down to 1 2 ohm stereo per channel or 1 ohm mono e Four Independent Dual Discrete Class A Drive Stages Over six times the drive current of most amps which maintains performance into low impedance loads e Drive Delay Muted Turn on off Circuit A unique circuit which completely eliminates any amplifier related turn on off noises e Flexible Input Sensitivity accepts voltages from 200 mV to 5 0 V permitting maximum output from the amplifier with virtually any source unit ee o o o Reference404s SAMPLE SYSTEM 2 2 channels of input with 4 stereo channels of high pass output Internal input to channels 3 amp 4 with an external crossover arg E E Teak a EE B 4 a3 Le g uaaa REN GND REMOVE fae R4 LEVEL LeINPUT R els R LEVEL LeINPUT R Vest wow wow O Bs 3 amp O02 999 2 2 0 CPD 8 2 00 np ois O r ae W Jh anes th in et ES aig 0 Q O O JO O 107 O F F H F F l J l O j 7 8 oy L Lo oO ys Lg 3 Bz SATELLITE SPEAKERS SATELLITE SPEAKERS 5 z AE 94
14. ur amplifier ever need service or replacement due to theft please record the following information which will help protect your investment Model and Serial Dealer s Name Date of Purchase Installation Shop Installation Date CAUTION Prolonged listening at high levels may result in hearing loss Even though your new Soundstream REFERENCE404s amplifier sounds better than anything you ve ever heard exercise caution to prevent hearing damage SERVICE Your Soundstream REFERENCE404s amplifier is protected by a limited warranty Please read the enclosed warranty card SPECIFICATIONS REFERENCE404s POWER 4 Q Stereo 2 Q Stereo 1 Q Stereo 1 2 Stereo 8 Q Bridged 4 Q Bridged 2 Q Bridged 1 Q Bridged THD lt 0 1 Signal to Noise gt 100 dB Frequency Response 20 Hz to 20 kHz 0 5 dB Stereo Separation gt 90 dB Damping gt 200 Input Sensitivity 200 mV 5 0 V Input Impedance 12 kQ Dimensions WxDxH 13 0 x 9 8 x 2 25 PROTECTION CIRCUITRY TABLE OF CONTENTS Your REFERENCE404s amplifier is protected against both overheating and short circuits by means of the following circuits Design reatlresct ys ccsee ale Son coe ape selon Cote at 4 5 Be A alr REFERENCE404s Diagram ossccsscccsssscccsssssssssssseseeseessssseee 637 e Main power supply fuses e Circuit breaker on each channel i TM s Smari Power Supply Thermal Rabak adivaing ares C Auto High Current Power Supply
15. urned off The next time it is powered up it will be in the High Power mode Unlike other amplifiers Soundstream s REFERENCE amplifiers can be configured to drive virtually any impedance and make maximum power The major advantages of this power supply are e awesome dynamic power capabilities e added continuous power with higher voltages e increased amplifier efficiency and reliability Because of the dynamic properties of most music all audio components should be able to react accordingly Thanks to their unique power supplies the REFERENCE404s amplifier can comfortably exceed its rated power for OTHER COMMENTS If you blow fuses with the REFERENCE404s amplifier it is likely that the amplifier is seeing a dead short either in the speaker wire or in the speaker itself Rectify the problem before blowing multiple fuses INSTALLATION STEP 4 e LEVEL SETTING The input levels are adjusted by means of the input level controls located on the front of the amplifier This is a unique dual stage circuit that adjusts both level and gain This topology maintains better Signal to Noise ratios even when using sources with minimal output In the ideal situation all components in the audio system reach maximum undistorted output at the same time The reason is because an amplifier will only make what comes into it bigger So if you send it a distorted signal from the head unit the amplifier is going to amplify distorted informatio
16. uts from internal from channels 1 amp 2 or external from channels 3 amp 4 local RCA inputs Coherent Stereo Bridge Mono Mixed Mono Switch Channels 3 amp 4 Select Bridge for bridged mono operation use right channel input Select Stereo for coherent stereo operation Select Mixed Mono for simultaneous stereo bridged mono operation AUTO HIGH CURRENT POWER SUPPLY The REFERENCE404s amplifier employs an extremely efficient Auto High Current power supply patent pending This new power supply circuitry automatically customizes your amplifier for optimum efficiency and power output into virtually any impedance load When other brand amplifiers are driven at low impedances i e 1 ohm or less they shut down squash dynamics and power output called current limiting or waste huge amounts of power i e low efficiency All of which reduce the realworld power the amplifier can produce in the car Soundstream s Auto High Current power supply allows the REFERENCE404s amplifier to be one of two types of amps either producing maximum power at higher impedances perfect for satellites or at lower impedances usually with multiple subwoofers This is done by letting the amplifier s power supply continuously monitor the impedance of the load the amplifier is driving If the impedance drops too low the power supply will automatically switch into High Current mode It will stay in this mode until the amplifier is t
Download Pdf Manuals
Related Search