User manual PYLE PLA2470

All Pyle products are carefully constructed and thoroughly tested before shipment. Products purchased in the USA are warranted to be free of defects in material and workmanship for two (2) years from the date of purchase. This warranty is limited to the original retail purchase. Should the product fail due to factory defects in material or workmanship, your unit will be repaired or replaced at the sole discretion of Pyle. To obtain warranty service you must first call our Consumer Return Hotline number at (718) 236-6948 to obtain a Return Authorization number. This R.A.# must appear on the outside of your package and on all paperwork relating to your return. When returning a product to us for warranty service it must be carefully packed and shipped prepaid to: R.A.# Pyle Service Center 1600 63rd Street Brooklyn, NY 11204 high performance car audio amplifier Optional protective endcaps included PLA2170 PLA4170 PLA2270 PLA4270 PLA2370 PLA4370 PLA2470 PLA2570 user's manual limited warranty policy amplifiers You must also include the following items: · A copy of your sales receipt or other proof of purchase · A brief letter indicating the problem you are experiencing · include in your letter your return address, daytime phone number, and R.A. number · also include a check or money order for $12.00 for return shipping, handling, and insurance, or provide your Visa/MC number with expiration date. Our obligation under this warranty is limited to the repair or replacement of the defective unit when it is returned to us prepaid. This warranty will be considered void if the unit was tampered with, improperly serviced, or subject to misuse, neglect, or accidental damage. www.pyleaudio.com congratulations... on your purchase of a Pyle Eternal Series amplifier. This amplifier extends the Pyle tradition into a totally new series of amps, designed from the ground up to deliver the power, performance and flexibility the modern car audio enthusiast demands. When you check the list of features offered by the PLA2170,PLA2270, PLA2370,PLA2470,PLA2570,PLA4170,PLA4270,PLA4370,you'll know you made the right choice with a Pyle Eternal amplifier. table of contents general features 2-5 6-11 PLA2170/2270/2370 PLA2470/2570 PLA4170/4270/4370 electrical connections features and specifications features and specifications PLA4170/4270/4370 mono input connections high level mono input connections speaker connections high level input connections 21 22 23 24 PLA4170/4270/4370 12-15 16 PLA4170/4270/4370 PLA2170/2270/2370 PLA2470/2570 PLA4170/4270/4370 PLA4170/4270/4370 speaker connections speaker connections PLA2170/2270/2370 PLA2470/2570 PLA4170/4270/4370 PLA2170/2270/2370 PLA2470/2570 PLA2170/2270/2370 PLA2470/2570 PLA4170/4270/4370 2/4 channel input connections mono input connections stereo input connections 17 18 25 26 27 28 29 19 20 mounting and installation protection circuitry and troubleshooting precautions general features PLA2170 High Performance 600 Watt 2 Channel Bridgeable MOSFET Amplifier PLA2270 High Performance 1000 Watt 2 Channel Bridgeable MOSFET Amplifier PLA2370 High Performance 1400 Watt 2 Channel Bridgeable MOSFET Amplifier · 300 Watts x 2 Output · 600 Watts x 1 Bridged Output · Variable Hi/Lo Electronic Crossover Network · Variable Bass Boost (0 - +18 dB @ 60Hz) · Variable Input Level (Gain) Control · Remote Turn On/Off · Gold Plated RCA Inputs · High Level MOLEX Input · Power ON LED Indicator · LED Protection Indicator · S/N Ratio: > 95 dB · THD: <0.04% · Thermal Protection · Overload Protection · Short Circuit Protection · Anti-Thump Turn-On · 500 Watts x 2 Output · 1000 Watts x 1 Bridged Output · Variable Hi/Lo Electronic Crossover Network · Variable Bass Boost (0 - +18 dB @ 60Hz) · Variable Input Level (Gain) Control · Remote Turn On/Off · Gold Plated RCA Inputs · High Level MOLEX Input · Power ON LED Indicator · LED Protection Indicator · Remote Bass Boost · S/N Ratio: > 95 dB · THD: <0.04% · Thermal Protection · Overload Protection · Short Circuit Protection · Anti-Thump Turn-On · 700 Watts x 2 Output · 1400 Watts x 1 Bridged Output · Variable Hi/Lo Electronic Crossover Network · Variable Bass Boost (0 - +18 dB @ 60Hz) · Variable Input Level (Gain) Control · Remote Turn On/Off · Gold Plated RCA Inputs · High Level MOLEX Input · Power ON LED Indicator · LED Protection Indicator · Remote Bass Boost · S/N Ratio: > 95 dB · THD: <0.04% · Thermal Protection · Overload Protection · Short Circuit Protection · Anti-Thump Turn-On 2 PLA2470 High Performance 1600 Watt 2 Channel Bridgeable MOSFET Amplifier PLA2570 High Performance 2000 Watt 2 Channel Bridgeable MOSFET Amplifier · 800 Watts x 2 Output · 1600W x 1 Bridged Output · Variable Hi/Lo Electronic Crossover Network · Variable Bass Boost (0 - +18 dB @ 60Hz) · Variable Input Level (Gain) Control · Remote Turn On/Off · Gold Plated RCA Inputs · High Level MOLEX Inputs · Power ON LED Indicator · LED Protection Indicator · Remote Bass Boost · S/N Ratio: > 95 dB · THD: <0.04% · Thermal Protection · Overload Protection · Short Circuit Protection · Anti-Thump Turn-On · Tri-Mode Configurable · 1000 Watts x 2 Output · 2000W x 1 Bridged Output · Variable Hi/Lo Electronic Crossover Network · Variable Bass Boost (0 - +18 dB @ 60Hz) · Variable Input Level (Gain) Control · Remote Turn On/Off · Gold Plated RCA Inputs · High Level MOLEX Inputs · Power ON LED Indicator · LED Protection Indicator · Remote Bass Boost · S/N Ratio: > 95 dB · THD: <0.04% · Thermal Protection · Overload Protection · Short Circuit Protection · Anti-Thump Turn-On · Tri-Mode Configurable 3 f e a t2 uc rh ea msp PaL n 2d1 7 0c. PoL An2 t2 7r0 o l s A PLA2170 PLA2270 high level inputs low level inputs input level control crossover mode selector bass boost level power LED protection LED remote bass boost (PLA2170 without) high pass frequency control low pass frequency control 6 power fuse speaker connections power terminals features and specifications 2 ch amp PLA2170.PLA2270 output power @ 14.4v DC, 1KHz RMS Power @ 4 Ohms RMS Power @ 2 Ohms Maximum Power Output frequency response input impedance low level inputs high level inputs input sensitivity low level inputs high level inputs power supply voltage matching speaker impedance stereo mode bridged mode maximum current draw dimensions (W x H x L) mm inches PLA2170 2 channel amplifier PLA2270 2 channel amplifier crossover mode selector when used with normal, full range systems, set this switch to "FULL." If you wish to use the internal crossover to power a driver of specific frequency range, use the "LOWPASS" or "HIGHPASS" settings. input level control use this control to match the outputs of your head unit to the amplifier. Starting with your head unit set at about the 2 o'clock position, increase the amp level control until distortion begins to occur, and reduce slightly from this point. low pass frequency control when the crossover selector switch is in "low pass" mode, this control sets the upper frequency limit for audio program sent to the speakers. high pass frequency control when the crossover selector switch is in "high pass" mode, this control sets the lower frequency limit for audio program sent to the speakers. Remote Bass Boost Plug in the Remote Bass Boost Control wire in here. bass boost level control this control permits adjustment of the bass level up to an increase of approximately 18 dB. low level inputs this amp features gold-plated RCA input jacks for high impedance input. Use these with car stereo output which uses RCA-type connector cables. high level inputs if your car stereo lacks RCA-type output jacks, you may connect speaker output leads to these input connectors. power LED this indicator is illuminated when power is applied. protection LED this indicator is illuminated when built-in protection circuitry is activated. power fuse the fuse protects the amplifier and your car's electrical system from short circuit conditions. power terminals use these connectors to deliver power, ground and remote turn-on control to the amplifier. speaker connections these terminals are 14K gold plated to guarantee high conductivity and minimum signal loss. 40 Watts x 2 70 Watts x 2 300 Watts x 2 15 Hz-30 KHz 10K Ohms 100 Ohms 250mV 2.5V 14.4V DC Neg. Ground (10.5-16V) 2-4 Ohms 4-8 Ohms 15A 292 x 60 x 209 11.5 x 2.34 x 8.25 75 Watts x 2 110 Watts x 2 500 Watts x 2 7 20A 292 x 60 x 305 11.5 x 2.34 x 12 features and controls 2 ch amp PLA2370.PLA2470 PLA2370 PLA2470 high level inputs low level inputs input level control crossover mode selector bass boost level power LED protection LED 8 remote bass boost high pass frequency control low pass frequency control power fuse speaker connections power terminals features and specifications 2 ch amp PLA2370.PLA2470 output power @ 14.4v DC, 1KHz RMS Power @ 4 Ohms RMS Power @ 2 Ohms Maximum Power Output frequency response input impedance low level inputs high level inputs input sensitivity low level inputs high level inputs power supply voltage matching speaker impedance stereo mode bridged mode maximum current draw dimensions (W x H x L) mm inches PLA2370 2 channel amplifier PLA2470 2 channel amplifier crossover mode selector when used with normal, full range systems, set this switch to "FULL." If you wish to use the internal crossover to power a driver of specific frequency range, use the "LOWPASS" or "HIGHPASS" settings. input level control use this control to match the outputs of your head unit to the amplifier. Starting with your head unit set at about the 2 o'clock position, increase the amp level control until distortion begins to occur, and reduce slightly from this point. low pass frequency control when the crossover selector switch is in "low pass" mode, this control sets the upper frequency limit for audio program sent to the speakers. high pass frequency control when the crossover selector switch is in "high pass" mode, this control sets the lower frequency limit for audio program sent to the speakers. Remote Bass Boost Plug in the Remote Bass Boost Control wire in here. bass boost level control this control permits adjustment of the bass level up to an increase of approximately 18 dB. low level inputs this amp features gold-plated RCA input jacks for high impedance input. Use these with car stereo output which uses RCA-type connector cables. high level inputs if your car stereo lacks RCA-type output jacks, you may connect speaker output leads to these input connectors. power LED this indicator is illuminated when power is applied. protection LED this indicator is illuminated when built-in protection circuitry is activated. power fuse the fuse protects the amplifier and your car's electrical system from short circuit conditions. power terminals use these connectors to deliver power, ground and remote turn-on control to the amplifier. speaker connections these terminals are 14K gold plated to guarantee high conductivity and minimum signal loss. 100 Watts x 2 150 Watts x 2 700 Watts x 2 15 Hz-30 KHz 10K Ohms 100 Ohms 250mV 2.5V 14.4V DC Neg. Ground (10.5-16V) 2-4 Ohms 4-8 Ohms 30A 292 x 60 x 400 11.5 x 2.34 x 15.75 150 Watts x 2 220 Watts x 2 800 Watts x 2 9 50A 292 x 60 x 432 11.5 x 2.34 x 17 f e a t u r2 e csh a am pn PdL A c 5o7 0n t r o l s 2 PLA2570 high level inputs low level inputs input level control crossover mode selector bass boost level power LED protection LED 10 remote bass boost high pass frequency control low pass frequency control power fuse speaker connections power terminals features and specifications 2 ch amp PLA2570 PLA2570 200 Watts x 2 285 Watts x 2 1000 Watts x 2 15 Hz-30 KHz 10K Ohms 100 Ohms 250mV 2.5V 2 channel amplifier crossover mode selector when used with normal, full range systems, set this switch to "FULL." If you wish to use the internal crossover to power a driver of specific frequency range, use the "LOWPASS" or "HIGHPASS" settings. input level control use this control to match the outputs of your head unit to the amplifier. Starting with your head unit set at about the 2 o'clock position, increase the amp level control until distortion begins to occur, and reduce slightly from this point. low pass frequency control when the crossover selector switch is in "low pass" mode, this control sets the upper frequency limit for audio program sent to the speakers. high pass frequency control when the crossover selector switch is in "high pass" mode, this control sets the lower frequency limit for audio program sent to the speakers. Remote Bass Boost Plug in the Remote Bass Boost Control wire in here. bass boost level control this control permits adjustment of the bass level up to an increase of approximately 18 dB. low level inputs this amp features gold-plated RCA input jacks for high impedance input. Use these with car stereo output which uses RCA-type connector cables. high level inputs if your car stereo lacks RCA-type output jacks, you may connect speaker output leads to these input connectors. power LED this indicator is illuminated when power is applied. protection LED this indicator is illuminated when built-in protection circuitry is activated. power fuse the fuse protects the amplifier and your car's electrical system from short circuit conditions. power terminals use these connectors to deliver power, ground and remote turn-on control to the amplifier. speaker connections these terminals are 14K gold plated to guarantee high conductivity and minimum signal loss. output power @ 14.4v DC, 1KHz RMS Power @ 4 Ohms RMS Power @ 2 Ohms Maximum Power Output frequency response input impedance low level inputs high level inputs input sensitivity low level inputs high level inputs power supply voltage matching speaker impedance stereo mode bridged mode maximum current draw dimensions (W x H x L) mm inches 11 14.4V DC Neg. Ground (10.5-16V) 2-4 Ohms 4-8 Ohms 60A 292 x 60 x 483 11.5 x 2.34 x 19 features and controls 4 ch amp PLA4170.PLA4270 PLA4170 PLA4270 protection LED power LED ch 3/4 high level inputs ch 3/4 low level inputs ch 3/4 input level control ch 3/4 crossover mode selector switch ch 3/4 bass boost level control ch 3/4 low pass frequency control ch 3/4 high pass frequency control ch 3/4 remote bass boost (PLA4170 without) ch 1/2 high level inputs ch 1/2 low level inputs ch 1/2 input level control ch 1/2 crossover mode selector switch ch 1/2 bass boost level control ch 1/2 low pass frequency control ch 1/2 high pass frequency control 12 power fuse speaker connections power terminals features and specifications 4 ch amp PLA4170.PLA4270 output power @ 14.4v DC, 1KHz RMS Power @ 4 Ohms RMS Power @ 2 Ohms Maximum Power Output frequency response input impedance low level inputs high level inputs input sensitivity low level inputs high level inputs power supply voltage matching speaker impedance stereo mode bridged mode maximum current draw dimensions (W x H x L) mm inches PLA4170 4 channel amplifier PLA4270 4 channel amplifier crossover mode selector when used with normal, full range systems, set this switch to "FULL." If you wish to use the internal crossover to power a driver of specific frequency range, use the "LOWPASS" or "HIGHPASS" settings. input level control use this control to match the outputs of your head unit to the amplifier. Starting with your head unit set at about the 2 o'clock position, increase the amp level control until distortion begins to occur, and reduce slightly from this point. low pass frequency control when the crossover selector switch is in "low pass" mode, this control sets the upper frequency limit for audio program sent to the speakers. high pass frequency control when the crossover selector switch is in "high pass" mode, this control sets the lower frequency limit for audio program sent to the speakers. Remote Bass Boost Plug in the Remote Bass Boost Control wire in here. bass boost level control this control permits adjustment of the bass level up to an increase of approximately 18 dB. low level inputs this amp features gold-plated RCA input jacks for high impedance input. Use these with car stereo output which uses RCA-type connector cables. high level inputs if your car stereo lacks RCA-type output jacks, you may connect speaker output leads to these input connectors. power LED this indicator is illuminated when power is applied. protection LED this indicator is illuminated when built-in protection circuitry is activated. power fuse the fuse protects the amplifier and your car's electrical system from short circuit conditions. power terminals use these connectors to deliver power, ground and remote turn-on control to the amplifier. speaker connections these terminals are 14K gold plated to guarantee high conductivity and minimum signal loss. 35 Watts x 4 50 Watts x 4 250 Watts x 4 15 Hz-30 KHz 10K Ohms 100 Ohms 250mV 2.5V 14.4V DC Neg. Ground (10.5-16V) 2-4 Ohms 4-8 Ohms 30A 292 x 60 x 305 11.5 x 2.34 x 12 75 Watts x 4 110 Watts x 4 400 Watts x 4 13 40A 292 x 60 x 432 11.5 x 2.34 x 17 f e a t u r4 e csh a am pn PdL A c 3o7 0n t r o l s 4 protection LED power LED PLA4370 ch 3/4 high level inputs ch 3/4 low level inputs ch 3/4 input level control ch 3/4 crossover mode selector switch ch 3/4 bass boost level control ch 3/4 low pass frequency control ch 3/4 high pass frequency control ch 3/4 remote bass boost ch 1/2 high level inputs ch 1/2 low level inputs ch 1/2 input level control ch 1/2 crossover mode selector switch ch 1/2 bass boost level control ch 1/2 low pass frequency control ch 1/2 high pass frequency control 14 power fuse speaker connections power terminals features and specifications 4 ch amp PLA4370 PLA4370 4 channel amplifier crossover mode selector when used with normal, full range systems, set this switch to "FULL." If you wish to use the internal crossover to power a driver of specific frequency range, use the "LOWPASS" or "HIGHPASS" settings. input level control use this control to match the outputs of your head unit to the amplifier. Starting with your head unit set at about the 2 o'clock position, increase the amp level control until distortion begins to occur, and reduce slightly from this point. low pass frequency control when the crossover selector switch is in "low pass" mode, this control sets the upper frequency limit for audio program sent to the speakers. high pass frequency control when the crossover selector switch is in "high pass" mode, this control sets the lower frequency limit for audio program sent to the speakers. Remote Bass Boost Plug in the Remote Bass Boost Control wire in here. bass boost level control this control permits adjustment of the bass level up to an increase of approximately 18 dB. low level inputs this amp features gold-plated RCA input jacks for high impedance input. Use these with car stereo output which uses RCA-type connector cables. high level inputs if your car stereo lacks RCA-type output jacks, you may connect speaker output leads to these input connectors. power LED this indicator is illuminated when power is applied. protection LED this indicator is illuminated when built-in protection circuitry is activated. power fuse the fuse protects the amplifier and your car's electrical system from short circuit conditions. power terminals use these connectors to deliver power, ground and remote turn-on control to the amplifier. speaker connections these terminals are 14K gold plated to guarantee high conductivity and minimum signal loss. output power @ 14.4v DC, 1KHz RMS Power @ 4 Ohms RMS Power @ 2 Ohms Maximum Power Output frequency response input impedance low level inputs high level inputs input sensitivity low level inputs high level inputs power supply voltage matching speaker impedance stereo mode bridged mode maximum current draw dimensions (W x H x L) mm inches 100 Watts x 4 150 Watts x 4 500 Watts x 4 15 Hz-30 KHz 10K Ohms 100 Ohms 250mV 2.5V 14.4V DC Neg. Ground (10.5-16V) 2-4 Ohms 4-8 Ohms 50A 292 x 60 x 483 11.5 x 2.34 x 19 15 electrical connections 2 ch amps PLA2170.PLA2270.PLA2370.PLA2470.PLA2570 PLA2170 PLA2270 PLA2370 PLA2470 PLA2570 16 12V battery head unit to remote turn-on +12V e4 l ceh ca tm pr si PcL aA 4l 1 7 0c. o LnA 4n2 e 0c. PtL iA o 3n7 0s P 7 4 PLA4170 PLA4270 PLA4370 17 12V battery head unit to remote turn-on +12V stereo input connections using 2 ch amps PLA2170.PLA2270.PLA2370.PLA2470.PLA2570 low level inputs PLA2170 PLA2270 PLA2370 PLA2470 PLA2570 using head unit head unit L/R Audio Outputs 18 PLEASE NOTE! If using high level inputs, do not use the low level RCA inputs at the same time! high level inputs L L R R wiring harness from speaker terminals mono input connections using 2 ch amps PLA2170.PLA2270.PLA2370.PLA2470.PLA2570 low level inputs PLA2170 PLA2270 PLA2370 PLA2470 PLA2570 head unit 19 PLEASE NOTE! If using high level inputs, do not use the low level RCA inputs at the same time! To a second amplifier Y Adaptors using high level inputs head unit To a second amplifier L wiring harness L R R wiring harness from speaker terminals 2/4 channel input connections 4 ch amps PLA4170.PLA4270.PLA4370 4 CH input connections using low level inputs PLA4170 PLA4270 PLA4370 L/R REAR Audio Outputs L/R FRONT Audio Outputs head unit 20 2 CH input connections using low level inputs L Y adaptors R high level input connections 4 ch amps PLA4170.PLA4270.PLA4370 4 CH floating ground connections PLA4170 PLA4270 PLA4370 4 CH harness wiring for common ground connections CH 3/4 REAR L ORANGE BLACK BLACK 21 CH 1/2 R L R FRONT ORANGE BLACK BLACK REAR L ORANGE BLACK BLACK R L R FRONT ORANGE BLACK BLACK ORANGE from speaker terminals ORANGE PLEASE NOTE! If using high level inputs, do not use the low level RCA inputs at the same time! ORANGE from speaker terminals ORANGE mono input connections 4 ch amps PLA4170.PLA4270.PLA4370 4 CH mono input connections using low level inputs PLA4170 PLA4270 PLA4370 RIGHT FRONT Audio Outputs RIGHT REAR Audio Outputs head unit LEFT FRONT Audio Outputs LEFT REAR Audio Outputs 22 2 CH input connections using low level inputs L Y adaptors R high level mono input connections 4 ch amps PLA4170.PLA4270.PLA4370 4 CH floating ground connections PLA4170 PLA4270 PLA4370 CH 3/4 23 CH 1/2 R ORANGE BLACK BLACK L ORANGE BLACK BLACK R ORANGE BLACK BLACK L ORANGE BLACK BLACK ORANGE from speaker terminals ORANGE PLEASE NOTE! If using high level inputs, do not use the low level RCA inputs at the same time! 4 CH harness wiring for common ground connections ORANGE from speaker terminals ORANGE speaker connections Stereo Output Mode 2 ch amps PLA2170.PLA2270.PLA2370.PLA2470.PLA2570 PLA2170 PLA2270 PLA2370 PLA2470 PLA2570 Bridged Mono Output Mode LEFT speaker RIGHT speaker 24 speaker MINIMUM SPEAKER IMPEDANCE 4 OHMS! speaker connections 4 CH Output Mode 4 ch amps PLA4170.PLA4270.PLA4370 PLA4170 PLA4270 PLA4370 FRONT speakers L R R L REAR speakers 25 Bridged Dual Mono Output Mode L speakers R MINIMUM SPEAKER IMPEDANCE 4 OHMS! speaker connections 2 CH Stereo Output Mode with Mono Bridged Subwoofer Output 4 ch amp PLA4170.PLA4270.PLA4370 PLA4170 PLA4270 PLA4370 MINIMUM SPEAKER IMPEDANCE 4 OHMS! R SUBWOOFER 26 L SPEAKERS mounting and installation mounting Before Your new Pyle Eternal Series amplifier comes complete with all required mounting hardware. When determining a suitable location in your vehicle for the amp, please remember that it is a high-power electronic device capable of generating high heat. For this reason, always choose a location in your vehicle which has low vibration, adequate ventilation, a minimum of dust, and no moisture. Be sure to mount the amp in such a manner as to allow reasonable airflow over the cooling fins. Mark the location for the mounting screw holes by positioning the amp where you wish to install it and use a scribe (or one of the mounting screws) inserted in each of the mounting holes to mark the mounting surface. If the mounting surface is carpeted, measure the hole centers and mark with a felt tip pen. attempting to drill the mounting holes, take note of any wires, lines or other devices in your vehicle which may be located behind the mounting surface! Then drill pilot holes in the mounting surface for the mounting screws and insert them. Tighten the screws securely. 27 wiring tips fuses When making electrical connections to your amplifier, please observe the following: Use at least 8 gauge wire for power and ground connections. Wire the amplifier directly to the car battery. For the ground connection, use the shortest possible wire to a good chassis ground point. Wire the Remote connection to the auto start lead of your head unit, equalizer or power antenna. About power fuses: Pyle Eternal Series amplifiers feature built-in fuse systems. These fuses protect both the amplifier and the electrical system in your vehicle from fault conditions. If you ever need to replace the fuse in your Pyle Eternal Series amp, use a fuse of exactly the same type and rating. A different type or rating of fuse may result in damage or fire. troubleshooting No output. Confirm that all terminal strip connections are secure and tight. protection circuitry The built-in protection circuitry in the Pyle Eternal amplifiers will disable the amplifier if it senses an input overload, a speaker short circuit, or extreme temperature conditions. When the protection circuit is activated by any of these conditions, the Protection LED will be illuminated. If this occurs, carefully inspect the system to determine the source of the problem. · If the shutdown was a result of a thermal overload condition, allow the amplifier to cool down before attempting to restart it. · If the shutdown was a result of an input overload, or speaker short circuit, be sure to correct the condition before restarting. The amplifier can be restarted by turning the remote power OFF and then ON again. Check both in-line and built-in fuses. Both the +12V and the Remote terminals must have +12v referenced to chassis ground. Confirm that the audio signal source (car radio, equalizer, etc.) is connected and is supplying output signal. To check if the amp is supplying signal, unplug the cables from the signal source (but leave them plugged into the amp). Briefly tap the center pin of each of the disconnected RCA plugs with your finger. This should produce a noise (feedback) in your speakers. Only one channel works. Confirm that all terminal strip connections are secure and tight. Check the Balance control on the head unit (or other source) to verify that it is set to its midpoint. 28 If you are using the Low Level RCA input, reverse the input plugs at the amplifier (i.e., switch the L with the R). If the channels which is silent switches to the other side, the problem is either in the head unit/other source or the connecting cables. Weak output. Readjust the Input Level Control(s) to better suit the input signal. Noise in the audio. If the noise is a "whine" whose pitch follows the engine speed, confirm that the amplifier and any other signal sources (head unit, etc.) are properly grounded. If the noise is a "clicking" or "popping" noise whose rate follows the engine speed, this usually means that the vehicle is equipped with resistor spark plugs and wires, or that the ignition is in need of service. Check the rounting of the speaker and input wires to make sure they are not adjacent to wires which interconnect lights and other accessories. If the above steps fail to improve or clear noise interference, the system should be checked by a professional mobile audio installer. notes precautions Do not operate the amplifier when it is unmounted. Attach all audio system components securely within the automobile to prevent damage, especially in an accident. Do not mount this amplifier so that the wire connections are unprotected, or in a pinched condition, or likely to be damaged by nearby objects. Before making or breaking power connections in your system, disconnect the vehicle battery. Confirm that your head unit or other equipment is turned off while connecting the input jacks and speaker terminals. If you need to replace the power fuse, do so only with a fuse identical to that supplied with the amplifier. Using a fuse of a different type or rating may result in damage that isn't covered in the manufacturer's warranty. 29 general features PLA4170 High Performance 1000 Watt 4 Channel Bridgeable MOSFET Amplifier PLA4270 High Performance 1600 Watt 4 Channel Bridgeable MOSFET Amplifier · 250 Watts x 4 Output. · 500 W x 2 Bridged Output ( 250 W x 2 + 500 W x 1) · Dual Variable Hi/Lo Electronic Crossover Network · Dual Variable Bass Boost (0 - +18 dB @ 60Hz) · Variable Input Level (Gain) Control · Remote Turn On/Off · Gold Plated RCA Inputs · High Level MOLEX Inputs · Power ON LED Indicator · LED Protection Indicator · S/N Ratio: > 95 dB · THD: <0.04% · Thermal Protection · Overload Protection · Short Circuit Protection · Anti-Thump Turn-On · Tri-Mode Configurable · 400 Watts x 4 Output · 800 Watts x 2 Bridged Output (400 W x 2 + 800 Wx 1) · Dual Variable Hi/Lo Electronic Crossover Network · Dual Variable Bass Boost (0 - +18 dB @ 60Hz) · Variable Input Level (Gain) Control · Remote Turn On/Off · Gold Plated RCA Inputs · High Level MOLEX Input · Power ON LED Indicator · LED Protection Indicator · Remote Bass Boost · S/N Ratio: > 95 dB · THD: <0.04% · Thermal Protection · Overload Protection · Short Circuit Protection · Anti-Thump Turn-On 4 PLA4370 High Performance 2000 Watt 4 Channel Bridgeable MOSFET Amplifier · 500 Watts x 4 Output · 1000 Watts x 2 Bridged Output (500 W x 2 + 1000 Wx 1) · Dual Variable Hi/Lo Electronic Crossover Network · Dual Variable Bass Boost (0 - +18 dB @ 60Hz) · Variable Input Level (Gain) Control · Remote Turn On/Off · Gold Plated RCA Inputs · High Level MOLEX Input · Power ON LED Indicator · LED Protection Indicator · Remote Bass Boost · S/N Ratio: > 95 dB · THD: <0.04% · Thermal Protection · Overload Protection · Short Circuit Protection · Anti-Thump Turn-On 5