re-Q recommends that you have your device installed
by an authorized re-Q dealer, preferably MECP certified.
Installation
1. Disconnect the negative battery terminal from your vehicle’s battery.
V O L U M E S E N S I N G B A S S R E S T O R AT I O N D E V I C E
2. Tap into the factory speaker and subwoofer (if applicable) wires. Connect signal in onto the re-Q5 harness. (Fig. 1)
NOTE: Phase is extremely important when summing! If reversed you will cause a cancellation in your system.
a. After connecting the factory speaker leads to the input of the re-Q5 , disconnect all speakers that will be
re-Q5, the 5-channel volume sensing bass restoration device, is designed to restore bass when
adding aftermarket amplifiers to a factory audio system. Most OEM systems “roll off” the bass to avoid
damaging the speakers at higher volume levels. While this is acceptable when using stock speakers, it’s
not desired when adding amplifiers as it limits the low frequency output of your system. Some try to
fix this problem by maxing out the gains of an amplifier for added bass response at higher volumes,
but when the volume is turned down,
powered by the aftermarket amplifier(s).
White/Red - Left Front (-)
Left Front Mid
White - Left Front (+)
White/Black - Left Front (-)
Fig. 1
Left Front Tweeter
White - Left Front (+)
3
5
7
9
there is too much bass for the midrange
and highs.
Brown/Black - Left Front (-)
2
4
6
8
Sub
Brown - Left Front (+)
re-Q5 solves these problems by sensing
the input from the head unit to add more
bass at high volume levels, and balances
the bass response at lower volume levels.
You get the bass you want with added
performance while keeping your factory
radio and your steering wheel controls.
NOTE: When using the summing feature of the re-Q5, be sure to connect the midrange and tweeter to the same
colored pairs of wires. For example, use one grey and grey with black stripe for the front right tweeter and the
other grey and grey with black stripe for the front right midrange.
GAIN
NOTE: When not using midrange and tweeter summing, use the white speaker wire pair with the red stripe for
front left channel input.
10
11
1
NOTE: For best performance disconnect the factory sub when adding aftermarket amps and subs.
b. If an entire channel of the speaker inputs is not being used, twist the positive and negative wires of that input
together and insulate the connection. This is not necessary for the unused summing inputs, only if the entire LF,
RF, RR, LF, or Sub input channels are not used at all.
3. The re-Q5 features three turn on settings for maximum installation flexibility. Deciding on which remote setting to use
depends on w hich type of signal is created by your head unit, and whether your factory audio system creates any
audible noise or pops when turning on or off. The three settings are as follows:
16 14
15
12
13
re-Q5 Features
a. Remote Mode - Attach red wire to a switched 12V source that is on when the car’s head unit is on. Set the Input
Select switch to the Remote position, and the re-Q5 will turn on/off only when voltage is applied/removed from
this wire.
1. Input Module Connector
2. Power Output Indicator
3. Left Front Gain
7. Left Rear Gain
8. Right Rear Gain
9. Sub Gain
10. Low RCA Level Outputs
11. Bass Enhance Switch
12. LP Crossover
13. Sub Sonic Crossover
14. AC Turn on Sensitivity
15. AC Signal Present Indicator
16. Input Select Switch
b. High Level Mode using Smart Engage™ - Requires that DC voltage be present on the speaker input wires to allow
the re-Q5 to turn on and off. Not all vehicles have DC voltage on the speaker wires. To test for DC voltage, attach
the (+) end of a volt meter to one speaker lead and the (–) to chassis ground of the vehicle. If there is 6V or more
of DC voltage at the speaker lead when the head unit is on, the re-Q5 will be able to sense the signal from the
head unit and turn on. Set the Input Select Switch to High Level and the re-Q5 will turn on/off with the head unit.
4. Front Sub Level Control
5. Right Front Gain
6. Rear Sub Level Control
c. AC Mode using Smart Engage™ - This setting is intended for vehicles
that do not have DC voltage on the speaker leads. This setting requires
adjusting the sensitivity of the re-Q5 to turn on when music signal is
present on the speaker input wires. Set the Input Select Switch to AC and
the re-Q5 should turn on with signal from the head unit. The re-Q5 is shipped
with the sensitivity set to the maximum level. To ensure the sensitivity is not set
too high for the application, confirm the re-Q5 turns off with the head unit. Note there is
approximately a 15 second delay for the re-Q5 to turn off after the head unit is turned off.
The delay is to prevent the unit from shutting off when there are pauses in the music or when
changing tracks or CDs. If the re-Q5 does not turn off after 15 seconds, adjust the Turn On Sensitivity
knob counter-clockwise in small increments until the re-Q5 turns off after the 15 second delay. (Fig.2)
Input Module Wiring
Blue - Remote Out
Green/Black - Left Rear (–)
Green - Left Rear (+)
Green/Black - Left Rear (–)
Green - Left Rear (+)
White/Red - Left Front (–) w/ Smart Engage
White - Left Front (+) w/ Smart Engage
White/Black - Left Front (–)
White - Left Front (+)
Brown - Sub (+)
Brown/Black - Sub (–)
Purple/Black - Right Rear (–)
Purple - Right Rear (+)
Purple/Black - Right Rear (–)
Purple - Right Rear (+)
Fig. 2
NOTE: When using High Level (DC) or AC signal sensing, the white input wire pair with the red stripe must be
used to accurately sense the voltage from the head unit.
NOTE: All three turn on settings will trigger the blue 12V remote output wire on the re-Q5 harness.
4. Using the provided fuse, connect the Yellow (12VDC Constant) power wire from the the re-Q5 to the power source
by tapping off your amplifier’s power wire or by running a separate wire directly to a fused constant 12V source.
5. Connect the black (Chassis Ground) wire from the re-Q5 to the chassis of the vehicle. Remove the paint at the
ground location to connect directly to the bare metal of the chassis. When the re-Q5 is grounded at the same
location as the amplifier, it functions as a ground loop isolator (Fig. 3).
Grey/Black - Right Front (–)
Grey - Right Front (+)
fuse
Yellow - 12VDC (Constant)
NEG
POS
Grey/Black - Right Front (–)
Grey - Right Front (+)
Red - Remote In 12V Switched
BATTERY
Red - Remote In
Black - Chassis Ground
Yellow - 12VDC (Constant)
Fig. 3
Black - Chassis Ground
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