Summary of QRS Series
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Qrs series amplifiers // owners manual.
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Introduction 2 2 thank you for purchasing this cadence qrs series amplifier. Over the years, the technology used to create audio amplifiers has grown by leaps and bounds. We have tens of thousands of satisfied customers still using our first generation ultra drive amplifiers which are more than 19 y...
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Features 3 3 power and protection circuitry: qrs series amplifiers feature our unique ic controlled protection circuitry. This sophisticated circuit constantly monitors the heat sink internal temperature and various voltages, adjusting the amp automatically and protecting it from dangerous condition...
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4 super class ab audio stage performance the audio output section of the qrs series amplifiers feature japanese studio grade, high current bipolar audio transistors. Unlike other manufacturers who use a host of different type of transistors, not originally designed for audio output, i.E.: power supp...
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5 remote turn on connection: the remote turn on connection is located on the barrier strip next to the power and ground connections. This connection is responsible for turning the amplifier on and off with the rest of the system. A smaller gauge wire can be used to make this connection to your radio...
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6 adjusting the system once the system is operational, the first thing to do, is set all crossover points to approximate settings. In the case of the basic sub woofer system low pass filter crossover at 100 hz or so. Set the bass equalizer controls to 0 db ( flat switch position.) now you should set...
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7 mounting the amplifiers: choose a convenient mounting location with unobstructed airflow. The qrs series amplifiers feature four mounting tabs located at the amplifiers four corners. Using the supplied screws and grommets, gently mount the amplifier in to position. Do not over tighten the screws. ...
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8 the qrs series amplifiers are supplied with built-in fuses, never replace the fuse that the amp came with, with one of a larger value. We suggest you construct a red wiring harness with 2 additional fuses. One fuse should be located near the car battery. This fuse near the battery offers protectio...
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Features 9 the q3000 features a unique clone function to assist in setting up a 2-channel bridged system with perfect gain and crossover tracking between the speakers. Typically when setting up a system you would need to set up channels 1 - 2 and then channels 3 - 4 crossovers and gains separately n...
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4 channel amp with 2 c hannel input (q3000, q4000) 10 if your head unit has only one pair of left and right rca out put jacks, plug them in to rca input jacks 1 and 2 of the amplifier. The amplifier preamp circuit will automatically mix the signals to channels 3 and 4 thereby preserving your left an...
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11 to audio outputs of head unit or signal processor with stereo outputs if your head unit has two pairs of rca output jacks, input front left and front right to channels 1 and 2. Then attach the rear pre-outs to channels 3 and 4. The pre-amp circuitry will not mix any signals thereby preserving ful...
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12 install any combination of speakers independently on all 4 channels being careful not to load any single channel below 2 ohm stereo. For typical 6” x 9” or 6.5” or component speaker installs, set the crossover mode switch to full range. Basic 4 channel configuration (q3000, q4000) left speaker 2-...
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13 when bridging the four channel amplifier, make sure that your final woofer impedance on each bridged channel is no lower than 4 ohms. Set the crossover mode switch to low pass and begin by setting the crossover frequency control to 100hz and tuning from there. 4 channel amplifier bridged to 2 cha...
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14 channels 1 and 2 should be wired to speakers no lower than 2 ohm loads per channel in stereo. Channel 3 and 4 should be bridged as per the diagram wiring the woofer to channel 3 positive side (+) and channel 4 negative side ( – ) terminals. Set the crossover mode switch of channels 1 and 2 to eit...
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15 4 channel with mixed mono (q3000, q4000) ch 1-2 crossover mode switch in high pass position ch 3-4 crossover mode switch in low pass position component values for 6db passive crossover frequency inductor capacitor 80 hz 100 hz 120 hz 150 hz 7.5 mh 6.5 mh 5.5 mh 4 mh 470 uf 330 uf 330 uf 220 uf su...
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16 4 channel with dual mixed mono configuration (q3000, q4000) all crossover settings in this mode should be set to full range. Subwoofer minimum impedance 8 ohms subwoofer minimum impedance 4-8 ohms front speakers rear speakers high pass filter capacitors low pass filter inductor low pass filter in...
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17 if your head unit has one single pair of rca outputs, input them in to the amplifier’s channel 1 and 2 input jacks and set the input mode switch to 2ch. The amplifier’s preamp circuitry will automatically mix all the channels and output will occur on all 5 channels. There will be left and right b...
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18 minimum impedance for channels 1 through 4 is 2 ohm stereo. Channel five minimum impedance is 2 ohm mono capable. Input mode set to 5 channel subwoofer minimum impedance 2-4 ohms component speakers minimum impedance 2-4 ohms component speakers minimum impedance 2-4 ohms 5 channel amplifier speake...
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19 2 channel amplifier 2 ohm / 4 ohm stereo (q2000) left speaker 4 ohm or 2 ohm right speaker 4 ohm or 2 ohm crossover mode switch in full range.
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20 2 channel amplifier 4 ohm bridged (q2000) crossover mode switch in low pass subwoofer minimum impedance 4 ohms.
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21 monoblock 2 ohm amplifiers (q6000m, q7000m, q8000m) dvc 4 ohm subwoofer in parellel = 2 ohm load 4 ohm subwoofer 4 ohm subwoofer 2 ohm minimum load - or - the following models: q6000m, q7000m, and q8000m are 2 ohm mono block amplifiers. No matter how many woofers you choose to wire up to these mo...
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Monoblock 1 ohm amplifier (q9000m) dvc 2 ohm subwoofer in parellel = 1 ohm load 2 ohm subwoofer 2 ohm subwoofer 1 ohm minimum load - or - the q9000m is a 1 ohm mono block class d amplifier. No matter how many woofers you choose to wire up to this amplifier the final impedance load should not fall be...
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Right channels 23 high level inputs / smart turn on (all models) high level input many factory radios do not have preamp outputs thus all qrs series models feature high level inputs. High level inputs, also referred to as speaker level inputs, allow you to connect to the factory speaker wires. They ...
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• high-speed mosfet power supply • studio-grade bipolar output stage transistors • fully adjustable 12db / octave crossover • fully adjustable +12db bass equalizer • 2 ohm stable stereo • 4 ohm mono bridgeable • high level inputs • smart turn on circuit • full ic-controlled protection circuit • lp /...
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25 q6000m • rated power: 400 watts rms @ 2 ohm • rated power: 300 watts rms @ 4 ohm • bridged power: n/a • minimum thd at rated power: • frequency response: 10hz - 250hz • s / n ratio: > 97db • damping factor: > 100 @ 100hz • dimensions: ( w x h x l ) 7.9” x 2.4” x 10.9” q7000m • rated power: 600 wa...
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26 2 ohm to amplifier 4 + 4 ohm 4 + 4 ohm 4 + 4 ohm 4 + 4 ohm 4 x dual vc 8 ohm speakers with series voice coils, all in parallel series: single voice coil speakers parallel: single voice coil speakers 2 ohm to amplifier 4 ohm 4 ohm 4 ohm to amplifier 2 ohm 2 ohm speaker wiring chart.
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27 2 x dual vc 2 ohm speakers with series voice coils, all in parallel series: dual voice coil speakers parallel: dual voice coil speakers 8 ohm to amplifier 4 + 4 ohm 4 ohm to amplifier 2 + 2 ohm 2 ohm to amplifier 1 + 1 ohm 2 ohm to amplifier 2 ohm to amplifier 4 + 4 ohm 2 + 2 ohm 2 + 2 ohm please...
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// features and specifications subject to change and or improvement without notice. Though we tried our best to ensure that this manual is free and clear of errors please don’t hold us responsible for printing errors. // copyright by cadence acoustics ltd. Www.Cadencesound.Com.