- DL manuals
- Quantum Audio
- Crossover
- QA3X
- Installation Instructions & Owner's Manual
Quantum Audio QA3X Installation Instructions & Owner's Manual
Summary of QA3X
Page 1
3-way electronic crossover installation instructions owner’s manual qa3x tel: (956) 428-4263 fax: (956) 421-4513 www.Quantumaudio.Net.
Page 2: Features
The quantum qa3x is a full-featured three-way crossover. When used to build a 2-way system with front and rear fader capability or a full three-way system, the quantum qa3x electronic crossover allows you to choose from a wide range of crossover points between the front, rear and subwoofer outputs. ...
Page 3: Front Panel Controls
1. Front rca input 2. Front crossover frequency control 3. Front/rear input selection 4. Rear rca input 5. Rear crossover frequency control 6. Sub input selection switch 7. Sub rca input 8. Sub crossover frequency control 9. Frequency multiplier switch 10. Sub bass boost frequency 11. Sub bass boost...
Page 4: Feature Description
•front high-pass crossover frequency adjustment - adjusts the crossover to match your speaker system. The crossover frequency can be adjusted from 32hz - 400hz or from 640hz - 8khz with the crossover frequency multiplier switch. •rear high-pass crossover frequency adjustment - adjusts the crossover ...
Page 5: Mounting Location
The qa3x crossover can be mounted in any convenient location in your vehicle that allows access to the controls and is away from moisture. The flanges on the chassis have mounting holes which can be used as a template for screw holes. For easy system set-up, mount the crossover so the front panel co...
Page 6: Wiring Precautions
Read all wiring precautions. If you are not sure of the connections, contact your authorized quantum audio dealer. If you are using a source unit, without a remote turn-on lead, the qa3x can be turned on with a switched accessory lead. You can find this accessory power source in the factory harness ...
Page 7: Power Connections
Power connections car battery +12v - + in -l in e p o w er f u se m o u n te d w it h in 1 2" fr o m b at te ry r ec o m m en d ed (n o t p ro v id ed ) 94.7 radio's remote turn-on output rear rca output fr ont rca output rear rca input front rca input 7 www.Quantumaudio.Net.
Page 8: Applications
2-way system with front and rear output in this illustration, the qa3x is configured for two channel input with dedicated amps for front speakers, rear speakers and subwoofer(s). Applications car battery +12v - + in -l in e p o w er f u se m o u n te d w it h in 1 2" fr o m b at te ry r ec o m m en ...
Page 9: Applications
2-way system with front and rear output (switch configurations) applications front rca in rear rca in sub rca in front rca in rear rca in front rca in for 2 channel input, configure switches as shown for 4 channel input with front and rear fade, configure switches as shown for front and rear fade wi...
Page 10: Applications
After all the wiring connections are made and before the system is turned on for the first time, you need to make some basic adjustments. It is important that the high-pass and low-pass frequency controls are set correctly before turning on the system for the first time. Setting the crossoverfrequen...
Page 11: Applications
Setting the rear output level before setting rear level controls, disconnect both the front output and the subwoofer output and follow the directions below . 1. Turn the output control level to the minimum setting. 2. Turn the amplifier gain controls to the minimum setting. 3. Turn the source unit o...
Page 12: Applications
3-way system in this illustration, the qa3x is configured for single channel input with dedicated amplifiers for tweeters, midranges, and subwoofer(s). Applications d car battery +12v - + in -l in e p o w er f u se m o u n te d w it h in 1 2" fr o m b at te ry r ec o m m en d e (n o t p ro v id ed )...
Page 13: Applications
After all the wiring connections are made and before the system is turned on for the first time, you need to make some basic adjustments. It is important that the high-pass and low-pass frequency controls are set correctly before turning on the system for the first time. Setting the crossover freque...
Page 14: Applications
Setting the sub output level 1. Make sure all outputs are connected and both the front and rear output levels are set correctly. Unplug the remote sub level control cable. 2. Be sure the sub output level and amplifier gains are at their minimum settings. 3. With the volume set at a medium level, slo...
Page 15: Troubleshooting
Problem: midrange speakers “pop” with loud passages. Solution: high-pass frequency control is set too low. Gain controls on amplifiers are set incorrectly. Reduce the gain setting on high frequency amplifier. Problem: one channel does not operate. Solution: swap left and right connections at the sou...
Page 16
Tel : 956-428-4263 fax : 956-421-4513 www.Quantumaudio.Net.