Boss Audio Systems Car Speaker GT 1180 User's Manual
Contents
1. To BATTERY a a CH3 SPEAKER LOW PASSFILTER Ty INDUCTOR SUBWOOFER HIGH PASS FILTERS CAPACITORS a SPEAKER IMPEDANCE Sai 4 8 OHMS SPEAKER SUBWOOFER MINIMUM IMPEDANCE 8 OHMS Pa cH2 AT Five Channel Speaker Wiring SPEAKER Five Channel Amplifier ai GT 1580 CH1 J CH 5 SPEAKER SPEAKER SUBWOOFER C GROUND 4 SPEAKER 12 to REMOTETURN ON 4 CH3 from HEAD UNIT N SPEAKER To BATTERY Bridged Speaker Wiring Five Channel Amplifier BRIDGED GT1580 LEFT SPEAKER CH 5 SPEAKER SUBWOOFER SPEAKER IMPEDANCE ae 4 8 OHMS E a GROUND To REMOTE TURN ON from HEAD UNIT To BATTERY yi SPEAKER IMPEDANCE BRIDGED 4 8 OHMS RIGHT SPEAKER Dual Tri Mode Speaker Wiring Tri Mode Operational Output is a unique feature which allows a subwoofer to be operated in MONO mode while the main speakers are playing STEREO simultaneously on one pair of amplifier output channels To engage the amplifierin this mode place the Crossover Subwoofer switchin the FULL position Use a 100V non poplar capacitor for a high pass crossover and a wire coil inductor to block high frequencies from the subwoofer as shown in the figure below Please review the table below for inductor and capacitor component values to determine the desired crossover freque2. Boost Variable O 0 18dB 0 18dB 0 18dB 0 18dB Tri mode Operation YES YES YES YES Inputs Cl Line Level and Speaker Level 2 2cre sete rete t eter reese eee Remote Subwoofer Level Control YES YES YES YES Frequency Response Si Oaka SOK aA Gye Bel sessosecosscscsssssooeressatsossessesososecs THD at RMS Output 0 01 0 01 0 01 0 01 Channnel Separation O 90dB 90dB 90dB 90dB Damping Factor 150 150 150 150 Fuse Rating O 20A x 2 25A x 2 35A x 2 80A x 1 Dimensions 9 5 16 W x 2 3 16 H x 12 1 4 L 16 1 2 L 19 1 4 L 20 1 2 L E A T U Four Channel Amplifiers GT 1180 GT 1380 GT 1480 Four Channel Bridgeable MOSFET Amplifier Tri Mode Capable Heavy duty Aluminum Alloy Heatsink Class A B Operation Continuously Variable LowPass Crossover 45Hz 90Hz Bass Boost Switch 0 to 18dB Remote Subwoofer Level Control Continuously Variable Input Gain Control High Pass Crossover 200Hz Nickel Plated RCA And Speaker Level Inputs Remote Turn On Turn Off Circuit MOSFET Pulse Width Modulated Power Supply 2 Ohm Stable Stereo Operation with Output Power Increase Soft Turn On Circuit Thermal and Speaker Short Protection Circuitry LED Powerand Protection Indicators Five Channel Amplifier GT 1580 Five Channel Bridgeable MOSFET Amplifier Tri Mode Capable Heavy duty Aluminum Alloy Heatsink Class A B Operation Continuously Variable LowPass Crossover 45Hz
3. 90Hz all channels Bass Boost Switch 0 to 18dB CH1 CH4 Variable Bass Boost 0 to 18dB CH5 Remote Subwoofer Level Control Continuously Variable Input Gain Control High Pass Crossover 200Hz Channels 1 4 Nickel Plated RCA And Speaker Level Inputs Remote Turn On Turn Off Circuit MOSFET Pulse Width Modulated Power Supply 2 Ohm Stable Stereo Operation with Output Power Increase Soft Turn On Circuit Thermal and Speaker Short Protection Circuitry LED Power and Protection Indicators Built in Crossover All GT amplifiers feature built in electronic crossovers The MonoBlock amplifier GT1000M features ancontinuously variable low pass andyvan 18dB Bass Boost switch The 2 Channel 4 Channel and 5 Channel GT amplifiers feature continuously variable low pass crossovers and fixed high pass crossovers They also all feature a 18 dB Bass Boost switch All GT amplifiers have been designed to utilizel00 MOSFET power supplies ensuring extremely rapid switching response for plenty ofclean power Protection Circuitry The amplifier protection circuitry will disable the amplifier if the inputs are overloaded short circuited orif extremely high temperature conditions are detected When the protection mode isin operation the LED indicator onthe front panel will be illuminated indicating the amplifierhas goneinto aself preservation mode If you observe that the protection LED is lit please check the syst
4. CONTENTS Congratulations Specifications Features About Protection Circuitry Amplifiers and 2 Ohm Operation Electrical Wiring Mounting the Amplifier High Input Wiring Mode Switch Settings Low Level Input Wiring Four Channel Amplifier Speaker Wiring Bridged Speaker Wiring with a Four Channel Amplifier Dual Tri Mode Speaker Wiring with a Four Channel Amplifier Five Channel Amplifier Speaker Wiring Bridged Speaker Wiring with a Five Channel Amplifier Dual Tri Mode Speaker Wiring with aFive Channel Amplifier Precautions Troubleshooting GT 1180 GT 1380 GT 1480 GT1580 Congratulations on your purchase of aBOSS Audio Systems GT car audio amplifier GT amplifiers are designed and engineered inthe USAto the highest level of quality and will afford you years of listening enjoyment All GT amplifiers utilize fully regulated MOSFET power supplies which ensures that switching response is extremely fast and output power is clean Thank you for making BOSS Audio Systems your choice for mobile audio entertainment MODEL GT 118 GT 1330 GT 1580 GT1480 Power Max 2 Ohms o D 400W x 4 500W x 4 500W x 4 500W x 1 600W x 4 Power RMS 4 Ohms 100W x 4 150W x 4 80W x 4 150Wx 1 200W x 4 Bridged Power 4 Ohms 800W x 2 1000Wx2 1000Wx2 500Wx1 1200W x 2 S N Ratio 103 dB 103 dB 103 dB 103 dB Low Pass Crossover Variable Continuously Variable 45Hz 90Hz 222 222 High Pass Crossover 150Hz 150Hz 150Hz 150Hz Bass
5. OUTPUT of HEAD UNIT Mode Switch in 4ch Position From OUTPUT S of HEAD UNIT cop I CH1 INPUT From OUTPUT of HEAD UNIT cai REMOTE SUBWOOFER como G REMOTE CRMODE SUBWOOFER ra CONTROL CH4 INPUT gt A From OUTPUT CH2 INPUT CH3 INPUT gt of HEAD UNIT CH3 INPUT CH1 INPUT Mode Switchin 5ch Position Y adaptor From OUTPUT of HEAD UNIT a Y adaptor CH2 INPUT CH4 INPUT 1 m x r yPUT LEVEL T aie eH 100mV 2V 2 V IN IN SC INPUT MOD eee ee E Four Channel Speaker Wiring Four Channel Amplifiers GT 1180 GT 1380 GT1480 CHI CH2 SPEAKER SPEAKER A GROUND F 10 CH3 CH4 To REMOTE TURN ON SPEAKER SPEAKER from HEAD UNIT To BATTERY Bridged Speaker Wiring Four Channel Amplifiers LEFT SPEAKER a SPEAKER IMPEDANCE SUBWOOFER GT1180 GT 1380 GT1480 4 8 OHMS or e Smo Sw Lea Smo Scud GROUND To REMOTE TURN ON
6. SPEAKER IMPEDANCE from HEAD UNIT a gtnvodris AMES 4 8OHMS To BATTERY Dual Tri Mode Speaker Wiring Tri Mode Operational Output is a unique feature which allows a subwoofer to be operated in MONO mode while the main speakers are playing STEREO simultaneously on one pair of amplifieroutput channels To engage the amplifierin this mode place the Crossover Subwoofer switchin the FULL position Use a 100V non poplar capacitor for a high pass crossover and a wire coil inductor to block high frequencies from the subwoofer as shown in the figure below Please review the table below for inductor and capacitor component values to determine the desired crossover frequencies Four Channel Amplifiers GT 1180 GT 1380 GT1480 IMPEDANCE 8 OHMS gt Component Values SPEAKER a aa for 6dB Passive Crossover SUBWOOFERMINIMUM SUBWOOFER Frequency Inductor Capacitor gt goH2 7SmH A70UF LOW PASS FILTER Ss a afc INDUCTOR o 120Hz 5 5mH 330uF 150Hz 4mH 220uF JENE iad Mis ia M S g j CH2 SPEAKER Ww SPEAKER 11 IMPEDANCE 4 8 OHMS HIGH PASS FILTERS CAPACITORS GROUND REMOTE 12V FUSES SS A TS D T SATAS La 3095 ED ED ARA AEA Sore coe Er 5 WSs FSS Sme Sw e gpp d m e ch J GROUND To REMOTE TURN ON from HEAD UNIT lt ll dia m e
7. em carefully to determine what has caused the protection circuitto engage The amplifier can be reset by turning the remote power off and then on again If the amplifier shuts down due to a thermal overload condition please allow it to cool down before powering up If the amplifier shuts down because of an input overload or short circuit be sure to repair these conditions before attempting to power up the amplifier again 2 Ohm Operation in stereo mode Your GT amplifier was designed to operate effectively at loads as low as 2 Ohms This means that you can install four 8 Ohm speakers per channel when using parallel wiring Increasing the number of woofers per channel at low frequencies up to 100Hz produces an acoustic coupling effect This acoustic coupling increases your power output by 3 dB per speaker When operating at 2 Ohms the amplifiers will increase their output power by approximately 50 The current draw will also increase by about the same amount So be sure you have enough current to runthe amplifiers into a2 Ohm load If you lack adequate current your music reproduction will be distorted Please note The gain control of any car audio amplifier should not be mistaken for a volume control It is a sophisticated device designed to match the output level of your audio source unit to the input level of the amplifier Do not adjust this input level to maximum unless your input level requires it Ignoring these instructions will res
8. head unit or other equipment is turned off while connecting the inputjacks and speaker terminals If you need to replace the power fuse replace it only witha fuse identical to that supplied with the system Using a fuse of different type orrating may result in damage to your system whichisn t covered by the manufacturer s warranty Troubleshooting Before removing your amplifier refer tothe list below and follow the suggested procedures Always test the speakers and their wires first No Output Only one channel works Weak Output Noiseinthe Audio Confirm that all terminal strip connections are secure and tight Check both in line and built in fuses Both the 12V andthe 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 checkif the amplifier is supplying signal unplug the RCA cables fromthe signal source but leave them plugged into the amp Gently tap the center pin of each of the disconnected RCA plugs with your finger This should produce anoise feedback in your speakers Confirm that all speaker strip connections are secure and tight 15 Check the BALANCE control on the head unit or other source to verify thatit is setto its midpoint If you are using the Low Level RCA Inputs reverse the input plugs atthe amplifier switches the R with the L If the channel whichis silent switches to o
9. ime CHANNEL 2 CHASSIS GROUND CHANNEL 1 CHANNEL 1 mT ea e HEAD UNIT Va D From Ej w 8 J SPEAKER C OUTPUTS CHANNEL 3 CHANNEL 3 CHASSIS GROUND CHANNEL 4 CHANNEL 4 Note Use the 4CH mode when using high level speaker inputs and the 5CH mode use with for low level RCA inputs Mode Switch Settings oo E S Hea sae MODE INPUT OUTPUT Ta wa p MODE SUBWOOFER 1 Low pass Se 5CH IN 1CH 2CH 3CH 4CH 5CH 1 2 3 4 5CH 4CH IN 1CH 2CH 3CH 4CH 1 2 3 4 5CH KEN sE 2CH IN 1CH 2CH 1 2 5CH De OF PA ebrna _ When the high level speaker inputs are used or when there is no input for CH5 the Mode switch should be placed in the5CH position Four Channel Ampffiers GT1180 GT1380 GT1480 CHANNEL 1 2 CROSSOVER LOWPASS pass weuT INPUT MODE FREQUENCY BOOST LEVEL SENSITIVITY Wrurs SoANoren goss Se mh il i e _ CT Ou GH LEVEL INPUTS CH1 CH2 CH4 INPUT lit ig Pur INPUT From OUTPUT of HEAD UNIT Five Game Amplifie GT 1530 From
10. ncies SUBWOOFER MINIMUM Five Channel Amplifiers IMPEDANCE 8 OHMS GT1580 SUBWOOFER SPEAKER IMPEDANCE Component Values no labo CHI Ww CH2 for 6dB Passive Crossover SPEAKER SPEAKER SPEAKER IMPEDANCE Frequency Inductor Capacitor Y d 4 8 OHMS 80Hz 7 5mH 470uF LOW PASS FILTER 100Hz 6 5mH 330uF INDUCTOR 120Hz 5 5mH 330uF CH 5 SPEAKER SUBWOOFER 150Hz 4mH 220uF HIGH PASS FILTER CAPACITORS i SUBWOOFER MINIMUM crim IMPEDANCE 8 OHMS ey bez Vi FUSES GROUND HIGH PASS FILTERS CAPACITORS To REMOTE TURN ON from HEAD UNIT E TO BALLERY aa y N SPEAKER IMPEDANCE CH3 CH4 4 8 OHMS SPEAKER IMPEDANCE SPEAKER SPEAKER 4 4 8 OHMS a LOW PASS FILTER SUBWOOFER INDUCTOR SUBWOOFER MINIMUM IMPEDANCE 8 OHMS 13 14 Precautions Before you drill or cut any holes investigate your car s layout very carefully Take care when you work near the gas tank fuellines hydraulic lines and electrical wiring Do not operate the amplifier when it is not mounted Attach all audio system components securely within the automobile to prevent damage especially in case of an accident Do not mount this amplifier sothat the wire connections are unprotected or ina 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
11. ther side the problemis eitherin the head unit other source orthe connecting tables Readjust the Input Sensitivity Control to better suit the input signal If the noise isa 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 isa 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 thatthe ignitionis in need of service Check the routing of the speaker and input wires to make sure they are not adjacent to wires which interconnect lights and other accessories
12. ult in an input overload to the amplifier and excessive audio distortion It can also cause the protection circuit to engage Electrical Wiring All BOSS GT series power amplifiers are equipped with easy top access screw terminals These terminals arenickel plated in orderto ensure excellent electrical contact and resist corrosion When making electrical connections to the amplifier please observe the following Use atleast 8 gauge or heavier wire for power and ground connections Wire the amplifier directly tothe car battery Make sure thereis circuit protection suchas a fuse on the positive power lead within 18 inches of the battery For the ground connection use the shortest possible wire toa good chassis ground point Wire the Remote connection tothe remote turn on lead of your equalizer or head unit Insome cases cases this may be the power antenna lead of the head unit Remote Subwoofer Level Control All BOSS GT series power amplifiers are equipped with a dashboard mount remote subwoofer level control Run the supplied dashboard remote control from the front panel of your amplifier By turning the level knob clockwise you will increase the output of low frequencies Fuses protect both the amplifier andthe electrical system of your vehicle from faulty conditions If you must replace the fuse in your GT amplifier use a fuse of exactly the same type and rating A different type or rating may result in damage or cause afire Mo
13. unting the Amplifier Mark the location for the mounting screw holes by positioning the amplifier where you wish to install itand usea scribe or one of the mounting screws inserted in each mounting hole to mark the mounting surface If the mounting surface is carpeted measure the hole centers and mark with a felttip pen Drill pilot holes inthe mounting surface for the mounting screws and insert the mounting screws into these holes Tighten them securely Note Before beginning your installation be sure to take note of any wires lines or other devices in your vehicle which may be located behind any mounting surface High Level Inputs The GT 4 Channel amplifiers utilize aseparate connector for Channels 1 2 and Channels 3 4 WARNING If you use the HIGH LEVEL speaker inputs do notuse the LOW LEVEL inputs at the same time Four Channel Amplifiers GT 1180 GT 1380 GT 1480 CHANNEL 2 CHASSIS GROUND CHANNEL 1 CHANNEL 1 p i HEAD UNIT G CHANNEL 1 2 IE OI O i JD I HEAT HEAD UNIT BOSS ee Ri T fi m CHASSIS GROUND SPEAKER OUTPUTS Low Flu ag p 2 ton Se ee ti On Mur A EY High Level Inputs 5 Channel Amplifier GT 1580 WARNING If you use the HIGH LEVEL speaker inputs donot use the LOW LEVEL inputs at the same t
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