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MOSFET POWER AMPLIFIERS
Installation Instructions / Owner's Manual
QS1500D QS2150 QS2250
QS4150 QS4250
Tel : 956-428-4263 Fax : 956-421-4513
www.quantumaudio.net
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INTRODUCTION Congratulations on your purchase of a QUANTUM AUDIO state-of-the-art power amplifier. Your selection of a QUANTUM AUDIO product indicates a true appreciation of fine musical reproduction. Whether adding to an existing system or including your Quantum amplifier in a new system, you are certain to notice immediate performance benefits. KEEP YOUR SALES RECEIPT Take this time to attach your sales receipt to the manual and put in a safe place. In case of any unforeseen reason t
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SAFETY PRECAUTIONS Fuse amplifiers power wire at the battery. Be sure to fuse the power wire within 12” of the car's battery. This will protect the car's battery in case of a short circuit between the power amplifier and battery. THIS IS A MUST, the amplifier's built-in fuse will only protect the power amplifier not the car's battery! Use high grade wire connectors. To ensure maximum power transfer and secure safe connections, it is recommended to use high grade barrier spades (for conne
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FEATURES AND BENEFITS DC Offset Protection This circuit protects the output of the amplifier against DC voltage. If for some reason DC voltage is detected at the output stage, the amplifier will shut down protecting the speakers from direct current. Short Circuit Protection The circuit protects the amplifier from damage due to a short found in the speakers or wiring. If one of the speakers or its wiring comes in contact with ground, the amplifier will shut down. To resume normal operation
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Line Out One set of full range line outputs have been provided for convenient connection to additional amplifiers in the system. Power Fusing This protects the amplifier against short circuits and excessive current. Remote Turn-on Automatically turns amplifier on when connected to the head unit's remote output. The amplifier will turn on and off with the head unit to save current consumption. This control also operates the reset circuit for the amplifier's protection. It must be connected
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MOUNTING LOCATION Before you start the installation, it will be necessary to find a mounting location for the amplifier. Find a location in which the amplifier will receive adequate ventilation in order to dissipate the heat it develops during operation. Two popular mounting locations are in the trunk or under the seat. Select the location in which you wish to mount the amplifier. Use caution when mounting amplifier, there are many wires, gas lines, vacuum lines, brake lines as well a
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POWER CONNECTIONS POWER INPUT FUSE SPEAKER OUTPUT R L GND REM POWER BRIDGED +12V PROTECT R RA AD DIO IO'S 'S R RE EM MO OT TE E IN IN-L -LIN INE E P PO OW WE ER R F FU US SE E T TU UR RN N- -O ON N O OU UT TP PU UT T M MO OU UN NT TE ED D W WIT ITH HIN IN 1 12 2" " F FR RO OM M B BA AT TT TE ER RY Y R RE EC CO OM MM ME EN ND DE ED D (N (NO OT T P PR RO OV VID IDE ED D) ) - - + + 9 94 4..7 7 C CA AR R B BA AT TT TE ER RY Y + +1 12 2V V IMPORTANT! Before making any connections, disconnect the ca
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R R SIGNAL & SPEAKER CONNECTIONS Connect the RCA output of the head unit (AM/FM cassette player, CD, or DAT) to the RCA input terminals of the amplifier. To make these connections, we recommend high quality RCA cables, which are available at your local car audio retailer. Run signal wires away from electrical wires to avoid possibility of induced noise from the car's electrical system (i.e. popping noises or engine noise). Please note that when making these connections the signal inputs co
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R R QS2150 & QS2250 CONNECTIONS (MONO MODE) In this example we have selected LPF (Low Pass Filter) for our XOVER. Adjust the LPF (Low Pass Frequency) Set the “MODE” switch to desired crossover point for your speakers to the MONO position. + - GND - + line lpf L HI L L INPUT full hpf MONO STEREO 5v .2v 0dB 12dB 60Hz 1.2KHz 30Hz 250Hz LEVEL BASS HPF LPF X-over Mode R EQ output input L L R R Optional full range line out connection to additional amplifiers in the system. POWER INPUT FUSE SPEAKER O
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R R QS4150 & QS4250 CONNECTIONS (4 CHANNEL MODE) In this example we have selected HPF (High Pass Filter) for our XOVER. Adjust the HPF (High Pass Frequency) to desired crossover point for your speakers Set the “MODE” switch to the 4 channel position. BASS + - GND - + LEVEL HPF LPF X-OVER EQ full hpf R ch4 ch3 lpf HI 5v .2v 0dB 12dB 60Hz 1.2KHz 30Hz 250Hz 2 3 4 INPUT full hpf ch1 ch2 L L L ch3-4 ch1-2 lpf 5v .2v 0dB 12dB 60Hz 1.2KHz 30Hz 250Hz MODE LINE INPUT + - GND - + OUTPUT Optional full r
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R R QS4150 & QS4250 CONNECTIONS (3 CHANNEL MODE) Adjust the LPF (Low Pass Frequency) to desired crossover point for your subwoofer In this example we have selected HPF (High Pass Filter) for our front channels. In this example we have selected LPF (Low Pass Filter) for our bridged channel. Adjust the HPF (High Pass Frequency) to desired crossover point for your speakers Set the “MODE” switch to the 3 channel position. BASS + - GND - + LEVEL HPF LPF X-OVER EQ full hpf R ch4 ch3 lpf HI 5v .2v 0
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R R QS4150 & QS4250 CONNECTIONS (2 CHANNEL MODE) In this example we have selected LPF (Low Pass Filter) for our XOVER. Adjust the LPF (Low Pass Frequency) to desired crossover point for your speakers Set the “MODE” switch to the 2 channel position. BASS + - GND - + LEVEL HPF LPF X-OVER EQ full hpf R ch4 ch3 lpf HI 5v .2v 0dB 12dB 60Hz 1.2KHz 30Hz 250Hz 2 3 4 INPUT full hpf ch1 ch2 L L L ch3-4 ch1-2 lpf 5v .2v 0dB 12dB 60Hz 1.2KHz 30Hz 250Hz MODE LINE INPUT + - GND - + OUTPUT Optional full ran
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R R QS1500D CONNECTIONS OUTPUT INPUT BASS SUB LOW LEVEL BOOST SONIC PASS POWER L L L PROTECT REMOTE 0dB 12dB 15Hz 55Hz 40Hz 150Hz 5v 0.2v CONTROL R L L R R Optional full range line out connection to additional amplifiers in the system. GND REM+12V FUSE SPEAKER OUTPUT + + POWER INPUT + + - - 4 4 O Oh hm m S Sp pe ea ak ke er r GND REM FUSE SPEAKER OUTPUT +12V + + POWER INPUT + + - - 4 4 O Oh hm m S Sp pe ea ak ke er r + + - - 4 4 O Oh hm m S Sp pe ea ak ke er r 12
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HIGH LEVEL CONNECTIONS (OPTIONAL) High Level inputs have been included to connect the amplifier to a radio without low-level outputs (i.e. factory radio). This connection will allow you to connect directly to the speaker output of the radio with out the need of an external adapter. Determine the type of radio you have and make one of the following connections. CAUTION! Before making any connections determine the type of radio to avoid possible damage to amplifier and/or radio. + - GND - +
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BASS + - GND - + LEVEL HPF LPF X-OVER EQ full hpf R ch4 ch3 lpf HI 5v .2v 0dB 12dB 60Hz 1.2KHz 30Hz 250Hz 2 3 4 INPUT full hpf ch1 ch2 L ch3-4 ch1-2 lpf 5v .2v 0dB 12dB 60Hz 1.2KHz 30Hz 250Hz MODE LINE INPUT + - GND - + OUTPUT 9 94 4..7 7 R RIIG GH HT T + + W WH HI IT TE E G GR RA AY Y R RIIG GH HT T + + B BR RO OW WN N R RI IG GH HT T - - R RIIG GH HT T - - G GR RE EE EN N B BL LA AC CK K ( (G GR RO OU UN ND D) ) ( (N NO OT T U US SE ED D) ) ( (N NO OT T U US SE ED D) ) B BL LA AC CK K
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REMOTE BASS CONTROL MODULE (QS1500D) Before connecting the remote, it will be necessary to find a mounting location that will be easy to access for adjustment. Once you select your mounting location, you will need to run the control wire from the remote to the amplifier. To avoid possibility of induced noise from the car's electrical system (i.e. popping noises or engine noise), run the cable from the remote to the amplifier away from the car's electrical wiring. OUTPUT INPUT BASS SUB LOW
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ADJUSTING THE CROSSOVER AND BASS . The SOLAR series amplifiers are equipped with a built-in variable crossover network allowing you to select the crossover type (i.e. Low-Pass or High-Pass) and the desired crossover point. For example if you wish to drive a pair of subwoofers, you can select the “Low Pass” setting on the amplifier to filter out high frequencies. This will send only low frequencies to your subwoofers (see example settings below). The crossover point should be determined b
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TROUBLE SHOOTING THE SYSTEM We have put together this trouble-shooting guide if you experience problems after installing the amplifier. Please keep in mind that the majority of problems incurred are caused by improper installation and not the equipment itself. In addition, there are many components in the system that could cause various signal problems such as inducted electrical noise and engine noise. Before you can properly address the problem, you must first find the component that is
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SPECIFICATIONS QS2150 QS2250 QS4150 Dynamic Power 400W 800W 800W Output Power @ 14.4 VDC : 4 ohm 2 x 150W 2 x 250W 4 x 150W 2 ohm 2 x 200W 2 x 400W 4 x 200W Bridged 4 ohm 1 x 400W 1 x 800W 2 x 400W Frequency Response 20Hz-28KHz 20Hz-28KHz 20Hz-28KHz S/N Ratio (A-weight) >95dB >95dB >95dB THD with 80k filter <0.05% <0.05% <0.05% Low Input Level 200mV-5V 200mV-5V 200mV-5V Battery Voltage Range 11VDC-14.4VDC 11VDC-14.4VDC 11VDC-14.4VDC Crossover Type HPF/FULL/LPF HPF/FULL/LPF HPF/FULL/LPF Low Pass
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LIMITED WARRANTY Quantum Audio warrants any products purchased in the U.S.A. from an authorized Quantum Audio dealer. All products are warranted to be free from defects in material and workmanship under normal use and service for a period of one (1) year. This warranty applies to the original purchase only. Quantum Audio will either repair or replace (as its option) any unit that has been found to be defective and under warranty provided the defect occurs within the one (1) year warranty p
