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Table of Contents
Related Manuals for Cadence QRS Series
Summary of Contents for Cadence QRS Series
- Page 1 QRS Series Amplifiers // Owners Manual...
- Page 2 We are very proud to introduce this second generation of QRS Series amplifiers. You will be amazed at the quality and power that these new amps offer.
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Page 3: Mute Circuit
“ADR”: - ACTIVE DYNAMIC REGULATION Cadence QRS Series amplifiers feature our proprietary ADR, Active Dynamic Regulated power supplies. 100% HexFET devices are utilized in the power supply for high speed (100KHz) switching frequencies. The power supplies are capable of supplying the main amplifier with a considerable amount of reserve voltage for peak “high demand”... -
Page 4: Protection Circuitry
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 supply transistors, motor control transistors to produce the audio signal (you can only imagine what they sound like.) Cadence uses only true audio transistors in the audio section of these amplifiers. -
Page 5: Installation Basics
AUDIO PREAMP INPUT The QRS Series amplifiers feature RCA pre amp inputs. Run RCA cables from your sound source to the inputs of the amplifier. We suggest the use of high quality shielded RCA patch cords to help reduce and eliminate unwanted electrical noise to your system. Be sure to run the RCA cables on the opposite side of the vehicle that you used to carry the power and ground leads of the amplifier. -
Page 6: Adjusting The System
USING THE ELECTRONIC CROSSOVER - 4 CHANNEL / 5 CHANNEL MODELS The 4 / 5 channel models feature separate crossovers for channels 1-2, 3-4, and 5 (5 channel model). All the QRS Series amplifiers feature 12dB per octave fully adjustable low-pass and high pass electronic crossovers. -
Page 7: Mounting And Wiring
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. - Page 8 12V+. The wire harness should be made of red primary cable of at least 4 gauge for all QRS Series amplifiers. The harness should terminate in a large ring terminal for connection directly to the positive terminal of the car battery.
- Page 9 FEATURES 4 Channel Amp Clone Features (Q3000, Q4000) 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 not guaranteeing perfect balance or frequency cutoffs.
- Page 10 4 Channel Amp with 2 C hannel Input (Q3000, Q4000) 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 and Right Balance control but with no Fade...
- Page 11 4 Channel Amp with 4 C hannel Input (Q3000, Q4000) 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 full left to right balance and font to rear fader control.
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Page 12: Front Speakers
Basic 4 Channel Configuration (Q3000, Q4000) 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. FRONT SPEAKERS LEFT SPEAKER RIGHT SPEAKER... - Page 13 4 Channel Amplifier Bridged to 2 Channels (Q3000, Q4000) 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.
- Page 14 4 Channel Amplifier in 3 Channel Mode (Q3000, Q4000) 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 either Full Range or High Pass, while Channels 3 and 4 should be set to Low Pass.
- Page 15 4 Channel with Mixed Mono (Q3000, Q4000) SUBWOOFER CH 1-2 CROSSOVER MODE SWITCH MINIMUM IMPEDANCE IN HIGH PASS POSITION LOW PASS 8 OHMS CH 3-4 CROSSOVER MODE SWITCH FILTER INDUCTOR IN LOW PASS POSITION FRONT SPEAKERS LEFT SPEAKER RIGHT SPEAKER 4 OHM 4 OHM COMPONENT VALUES FOR...
- Page 16 (Q3000, Q4000) 4 Channel with Dual Mixed Mono Configuration SUBWOOFER ALL CROSSOVER MINIMUM IMPEDANCE LOW PASS FRONT SPEAKERS 4-8 OHMS FILTER INDUCTOR SETTINGS IN THIS MODE SHOULD BE LEFT SPEAKER SET TO FULL RANGE. RIGHT SPEAKER 4 OHM 4 OHM RIGHT SPEAKER LEFT SPEAKER COMPONENT VALUES FOR...
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Page 17: Channel Input Mode
(Q5000) 5 Channel Input Mode If your head unit has one single pair of RCA 2 CHANNEL MODE 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 INPUT MODE SET TO will automatically mix all the channels and 2 CHANNEL... - Page 18 (Q5000) 5 Channel Amplifier Speaker Wiring Minimum impedance for channels 1 through 4 is 2 ohm stereo. Channel five minimum impedance is 2 ohm mono capable. COMPONENT SPEAKERS MINIMUM IMPEDANCE 2-4 OHMS INPUT MODE SET TO 5 CHANNEL SUBWOOFER MINIMUM IMPEDANCE 2-4 OHMS COMPONENT SPEAKERS...
- Page 19 (Q2000) 2 Channel Amplifier 2 Ohm / 4 Ohm Stereo CROSSOVER MODE SWITCH IN FULL RANGE LEFT SPEAKER RIGHT SPEAKER 4 OHM OR 2 OHM 4 OHM OR 2 OHM...
- Page 20 (Q2000) 2 Channel Amplifier 4 Ohm Bridged CROSSOVER MODE SWITCH IN LOW PASS SUBWOOFER MINIMUM IMPEDANCE 4 OHMS...
- Page 21 (Q6000m, Q7000m, Q8000m) Monoblock 2 Ohm Amplifiers 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 models, the final impedance should not fall below 2 ohms. Please see page 26 and 27 for various speaker impedance configurations.
- Page 22 Monoblock 1 Ohm Amplifier (Q9000m) 1 OHM MINIMUM LOAD - OR - 2 OHM SUBWOOFER 2 OHM SUBWOOFER 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 below 1 ohm.
- Page 23 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 are called High Level inputs because they convert the high voltage running through factory speaker wires to one the amplifier can handle.
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Page 24: Specifications
Specifications Q2000 Q3000 Q4000 Q5000 • Rated Power: 90 Watts RMS @ 4 ohm x 2 • Rated Power: 90 Watts RMS @ 4 ohm x 4 • Rated Power: 125 Watts RMS @ 4 ohm x 4 • Rated Power: 80 Watts RMS @ 4 ohm x 4 + 250 Watts x 1 •... - Page 25 Specifications Q6000m Q7000m Q8000m Q9000m • Rated Power: 400 Watts RMS @ 2 ohm • Rated Power: 600 Watts RMS @ 2 ohm • Rated Power: 1200 Watts RMS @ 1 ohm • Rated Power: 800 Watts RMS @ 2 ohm •...
- Page 26 Speaker Wiring Chart 4 + 4 4 + 4 4 + 4 4 + 4 4 X DUAL VC 8 OHM 2 OHM SPEAKERS WITH SERIES VOICE COILS, AMPLIFIER ALL IN PARALLEL SERIES: PARALLEL: 4 OHM 2 OHM SINGLE VOICE SINGLE VOICE TO AMPLIFIER TO AMPLIFIER...
- Page 27 DUAL VOICE COIL DUAL VOICE COIL SPEAKERS SPEAKERS Please note that the minimum impedance load for single Cadence QRS Series Amplifiers is 2 ohm stereo and 4 ohm mono bridged. 4 + 4 8 OHM TO AMPLIFIER Lower impedance loads will cause overheating...
- Page 28 // 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...