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Hersteller: Directed Audio Dateigröße: 455.52 kb Dateiname: Unterrichtssprache:

10. Due to the high-frequency MOSFET switching power supply, filtering the power cable is not generally required (remember that the amp can’t deliver full output if the power supply is restricted). Proper grounding of the signal source is mandatory for the amplifier to reach its performance peak. If the RCA inputs are not grounded adequately via the signal source, electrical noise from the vehicle may be picked up in the system. © 2004 Directed Electronics, Inc FRONT PANEL CONNECTIONS/CONTROLS A502-A404 1. R RRC CCA AA I IIn nnp ppu uut tt J JJa aac cck kks ss - --Accepts line level outputs from head units or signal processors at voltages between 5. 150mV and 7.5 volts. 2. R RRC CCA AA O OOu uut ttp ppu uut tt J JJa aac cck kks ss - --These pass through RCA jacks can be used to 6. send the input signal to a second amplifier. 3. G GGa aai iin nn C CCo oon nnt ttr rro ool ll - --Controls amplifier sensitivity and is used to match the 7. input level of the amplifier to the output level of the signal source. 4. C CCr rro oos sss sso oov vve eer rr S SSe eel lle eec cct tti iio oon nn S SSw wwi iit ttc cch hh - -Controls the type of filter for the onboard active crossover. FLAT does not attenuate any frequencies and is for full-range speaker systems. 8. HPF attenuates low frequencies and is used for mid-range speakers and tweeters. LPF attenuates high FIGURE 1—AMPLIFIER CONNECTIONS A502 FRONT frequencies and is used for subwoofers speakers. B BBa aas sss ss E EEQ QQ S SSw wwi iit ttc cch hh - Adds an additional 8 db of boost to the speaker output when on. L LLi iig ggh hht tt B BBa aar rr/ //F FFa aan nn - Allows connection of an o oop ppt tti iio oon nna aal ll LED light bar or o oop ppt tti iio oon nna aal ll additional cooling fan for the amplifier. S SSt tta aat ttu uus ss L LLE EED DD - Will illuminate GREEN to indicate the amplifier is on and operating normally, and will be illuminated RED if the amplifier shuts down due to short circuit, DC offset, or overheating detected by onboard protection circuitry. I IIn nnp ppu uut tt M MMo ood dde ee S SSw wwi iit ttc cch hh - Selects 2 or 4 channel operation (model A404 only). 1 2 3 4 5 6 7 © 2004 Directed Electronics, Inc FIGURE 2—AMPLIFIER CONNECTIONS A404 FRONT 1 2 3 4 5 6 78 FIGURE 5—LED/FAN HARNESS BLACK BLUE BLACK RED REAR PANEL CONNECTIONS 1. P PPo oow wwe eer rr F FFu uus sse ee - --This fuse protects the 3. amplifier against internal electrical damage and is meant to protect the amplifier only. All other power connections should be fused at the source. The A502 uses 1-30A fuse, 4. and the A404 uses 1-30A fuse. 2. ( ((+ ++) )) 1 112 22 V VVo ool llt tt P PPo oow wwe eer rr - Connect this terminal through a FUSE or CIRCUIT BREAKER to the positive terminal of the vehicle battery or the positive terminal of an isolated audio system battery. W WWA AAR RRN NNI IIN NNG GG: ::Always protect this power wire by installing a fuse or circuit breaker of the appropriate size within 12 inches of the battery terminal connection. - TO LEDs + - TO FAN + R RRe eem mmo oot tte ee T TTu uur rrn nn O OOn nn - This terminal turns on the amplifier when (+) 12 volt is applied to it. Connect it to the remote turn on lead of the head unit or signal source. G GGr rro oou uun nnd dd - --Connect this terminal directly to the sheet metal chassis of the vehicle using the shortest wire necessary to make this connection. Always use wire of the same gauge or larger than the (+) 12 volt power wire. The chassis connection point should be scraped free of paint and dirt. Use only quality crimped and/or soldered connectors at both ends of this © 2004 Directed Electronics, Inc wire. DO NOT connect this terminal 5. S SS p pp e ee a aa k kk e ee r rr T TT e ee r rr m mm i ii n nn a aa l ll s ss - Connect the directly to the vehicle battery speakers to these terminals. (Refer ground terminal or any other to the Wiring Diagram section of factory ground points. this guide.) 1 2 3 4 5 FIGURE 3—AMPLIFIER CONNECTIONS A502 REAR FIGURE 4—AMPLIFIER CONNECTIONS A404 REAR 1 2 3 4 5 © 2004 Directed Electronics, Inc SPEAKER WIRING DIAGRAMS A502 Stereo operation (top view) L CH R CH Mono operation (top view) B R I D G E D L CH R CH Simultaneous stereo/mono operation (top view) B R I D G E D L CH R CH INDUCTOR CAP CAP SUB © 2004 Directed Electronics, Inc SPEAKER WIRING DIAGRAMS A404 Stereo Operation - 2 Channel (top view) B R I D G E D L CH R CH B R I D G E D L CH R CH FRONT (RIGHT) REAR (LEFT) N NNO OOT TTE EE: ::For bridged two channel operation as shown in this diagram, connect right channel RCA cables to the front inputs of the amplifier, and left channel RCA cables to the rear inputs of the amplifier. For summed subwoofer applications, connect RCA cables per the input jack marking. © 2004 Directed Electronics, Inc Stereo Operation - 4 Channel (top view) B R I D G E D L CH R CH B R I D G E D L CH R CH FRONT (LEFT) REAR (LEFT) REAR (RIGHT) FRONT (RIGHT) Simultaneous Stereo (top view) B R I D G E D L CH R CH ...

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