Wavtech linkQ 2 Channel LOC Line Driver Owner’s Manual

Wavtech linkQ 2 Channel LOC Line Driver

2-Channel LOC / Line Driver
10Vrms Output Ÿ Paragraphic EQ Ÿ Remote Level Control

www.wavtech-usa.com

WARNING
This symbol means important instructions.
Failure to heed them can result in serious injury or death.

CAUTION
This symbol means important instructions.
Failure to heed them can result in injury or property damages.

WARNING

• DO NOT DRIVE WHILE DISTRACTED. Any function that requires your prolonged attention should not be performed while driving. Always stop the vehicle in a safe location before performing any such function. Failure to do so may result in an accident.
• KEEP THE VOLUME AT MODERATE LEVELS WHILE DRIVING. Excess volume levels can obscure sounds such as emergency vehicle sirens or road warning signals and may result in an accident. Continuous exposure to high sound pressure levels may cause permanent hearing loss. Use common sense and practice safe sound.
• FOR USE WITH 12V NEGATIVE GROUND VEHICLE APPLICATIONS ONLY. Using this product other than in its designed application may result in fire, injury or product damage.
• MAKE THE CORRECT WIRING CONNECTIONS AND USE PROPER FUSE PROTECTION. Failure to connect wiring correctly or use appropriate fuse protection may result in fire, injury or product damage . Ensure proper fusing of all system power wiring and install a 1-ampere in-line fuse (not included) with the +12V lead to the unit’s power supply connector.
• DISCONNECT THE NEGATIVE BATTERY TERMINAL BEFORE INSTALLATION. Failure to do so may result in fire, injury or damage to the unit.
• DO NOT ALLOW CABLES TO BECOME ENTANGLED IN SURROUNDING OBJECTS. Arrange wiring and cables to prevent obstructions when driving. Cables or wiring that obstruct or hang up on places such as steering wheel, brake pedals, etc. can be extremely hazardous.
• DO NOT DAMAGE VEHICLE SYSTEMS OR WIRING WHEN DRILLING HOLES. When drilling holes in the chassis for installation, take precautions so as not to contact, puncture or obstruct brake lines, fuel lines, fuel tanks, electrical wiring, etc. Failure to take such precautions may result in fire or an accident.
• DO NOT UTILIZE OR CONNECT TO ANY PART OF VEHICLE SAFETY SYSTEMS. Bolts, nuts or wires used in the brake, airbag, steering or any other safety-related systems or fuel tanks should NEVER be used for mounting, power or ground connections. Using such parts may disable control of the vehicle or result in fire.

CAUTION

• STOP USE IMMEDIATELY IF A PROBLEM OCCURS. Failure to do so may result in personal injury or damage to the product. Return it to your authorized Wāvtech dealer.
• HAVE AN EXPERT DO THE WIRING AND INSTALLATION. This unit requires special technical skill and experience for wiring and installation. To insure safety and proper function, always contact the authorized dealer where you purchased the product to have it done professionally.
• INSTALL THE UNIT SECURELY WITH SPECIFIED PARTS. Be sure to use only the included parts and specified installation accessories (not included). Use of other than designated parts may damage this unit. Install the unit securely so that it will not come loose during a collision or sudden jolt.
• ROUTE WIRING AWAY FROM SHARP EDGES AND MOVING PARTS. Arrange cables and wiring away from sharp or pointed edges and avoid moving parts such as seat hinges or rails to prevent pinching or wear. Use loom protection where appropriate and always use a grommet for any wiring routed through metal.
• NEVER RUN SYSTEM WIRING OUTSIDE OR UNDERNEATH THE VEHICLE. All wiring must be routed, secured and protected inside the vehicle. Failure to do so may result in fire, injury or property damage.
• INSTALL THE UNIT IN A DRY AND VENTILATED LOCATION. Avoid mounting locations where the unit will likely be exposed to high moisture or heat without adequate ventilation. Moisture penetration or heat buildup may result in product failure.
• REDUCE GAIN AND SOURCE VOLUME TO MINIMUM LEVELS FOR INITIAL SYSTEM TUNING AND BEFORE CONNECTION TO AN AMPLIFIER. Ensure amplifier power is off before connecting RCA cables and follow proper system gain setting procedure. Failure to do so may result in damage to the amplifier and/or connected components.

Package Contents

Accessories Required for Installation (not included):

• RCA Interconnects
• 18AWG Wire
• In-line Fuse Holder w/1A fuse
• Battery Ring Terminal
• Ground Terminal
• Wire Crimp Connectors
• Grommets and Loom
• Cable Ties
• Mounting Screws

Introduction

Welcome to Wāvtech, exceptional mobile audio integration products for audiophiles. Our products are engineered to provide a truly remarkable listening experience. Built for the professional installer, our OEM integration and signal processor models are simply the best solution available for unlimited sound system upgrades while retaining the factory receiver.

Features

• 2-Channel Line Output Converter or Line Driver
• Remote Level Control
• Adjustable Paragraphic Bass EQ
• Differential Balanced Inputs
• Low Impedance Outputs
• Variable Gain Adjustment with Clip LED
• Auto Turn-On via DC-Offset or Audio Signal Detect
• Generated +12V Remote Output
• OEM Load Detect Compatible
• Selectable Ground Isolation
• Locking Detachable Power/Speaker Terminals
• Panel Mount RCA Jacks
• Compact Aluminum Chassis
• Detachable Mounting Tabs

Connections & Functions

1. Power Indicator: This red LED indicates when the linkQ is powered on. Once illuminated, there will be a short delay before audio signal output is enabled. During initial power connections, it may illuminate for a brief period.
2. Ground Jumper: For selecting between chassis, isolation or 200Ω for the internal audio signal ground. Chassis ground is the default setting and ideal for most applications due to the differential input stage. In the rare case there is system noise present after all other installation countermeasures, changing this jumper to ISO or 200Ω may reduce or eliminate the noise.
3. Power Supply Terminal: For +12V battery, chassis ground, remote input and remote output wire connections. A minimum of 18AWG wire is recommended for power and ground connections. Always protect the +12V power wire with a 1-amp fuse.
4. Speaker Level Input Terminal: For left and right channel speaker level (a.k.a. high level) connections to the source. Input signals ranging from 2Vrms to 20Vrms will produce up to 10Vrms RCA output at maximum to minimum gain. For factory amplifiers with more than 20Vrms signal or if the linkQ’s output is too high for the connected aftermarket amplifier(s) with all gains at minimum, internal jumpers are available to reduce the input sensitivity range by half (-6dB) to 4Vrms up to 40Vrms.
5. Clipping Indicator: This yellow LED indicates when the output signal is at maximum level before distortion (clipping) occurs. It will be dimly lit just before the onset of clipping, and full bright at clipping. Since the linkQ can produce up to 10Vrms output before clipping, it is likely that gain will need to be reduced below the illumination point to match your amplifier(s) maximum input capability, optimize source volume range or compensate for any equalization applied after initial gain setting.
6. Gain Adjustment: This adjustment is for matching the output signal level of the linkQ with the maximum unclipped signal range provided by your source and the maximum input capability of your amplifier(s). Follow proper gain setting procedures to ensure optimum source volume range with minimum chance for clipping at any point in the signal chain. Aside from music, a -10dBfs sine wave tone at a frequency not affected by any crossovers may also be used for the tuning process to ensure proper headroom and gain overlap for typical music recording levels.
7. Bass EQ: This section provides adjustments for a single paragraphic EQ band, which allows tuning flexibility for differences between vehicles and sound systems to optimize bass performance.
8. Boost: Sets the amount of boost applied at the center frequency (Fc), adjustable up to +12dB.
9. Frequency: Sets the center frequency (Fc) of the EQ band, adjustable from 30Hz to 80Hz.
10. EQ On/Off: This switch activates or bypasses the internal equalization circuit (default setting is off).

1. RCA Input Jacks: For left and right channel low level (a.k.a. line level) signal connections to the source unit. Input signals ranging from 0.5Vrms to 5Vrms will produce up to 10Vrms RCA output at maximum to minimum gain. These inputs are differential, but may be set to unbalanced via internal jumpers if required for a particular source or to reduce coupled noise if left floating.
2. Remote Level Control Jacks: These RJ45 jacks are for connecting the supplied cable between the main unit and the external level control for remote mounting. A standard ethernet cable may also be used.
3. RCA Output Jacks: For left and right channel line level signal connections to your amplifier(s). Use quality interconnects to ensure stable connection and minimize the possibility for induced noise.
4. Mounting Tabs: These mounting tabs are pre-attached and should be used to properly secure the linkQ with screws or cable ties. They are removable if the unit can be safely secured by another method.
5. Remote Housing: This 2-piece housing design provides both convenient mounting and simple dissasembly for customization. The integrated screw mount tabs are pre-scored to aid removal if securing by another method, and the lower housing can be detatched by removing the two top screws. For panel mounting, the housing can be completely disassembled by also removing the knob, shaft nut, and circuit board screw. It is recommended to protect the exposed PCB with heat shrink.

Installation & System Wiring

It is important to read this manual thoroughly before starting your installation and always plan accordingly. Before installing any Wāvtech product, disconnect the negative (ground) wire from the vehicle’s battery to avoid damage to the vehicle or yourself. Following all guidelines will help provide years of enjoyment with your Wāvtech linkQ audio interface.

• Ground Connection (GND): The GND terminal must be connected to a metal part of the vehicle that is welded to the vehicle body with ground plane back to the main battery ground attachment point (a.k.a. chassis ground). This wire should be a minimum of 18AWG and as short as possible to minimize potential for noise to enter the system. The chassis ground connection point should have all of the paint removed and be scuffed to the bare metal. The ground wire should be terminated by a ground specific interlocking terminal such as the EARL terminal or ring terminal securely bolted to the vehicle with star or lock washer and nut to prevent from coming loose. Avoid using factory ground points to reduce the chance of induced noise from other components.
• Power Connection (+12V): The constant power connection should be made at the vehicle battery when possible. For direct battery connection, a 1-amp fuse must be installed in-line with the power wire within 18”of the battery and securely connected to the positive battery terminal bolt with a ring terminal. If connecting to another available constant +12V power source, a 1-amp in-line fuse must be added at the connection point. The power wire should be a minimum of 18AWG. Do not install the fuse until all other system connections have been made.
• Speaker Level Input (SPK): Connect the speaker wires from the source unit to corresponding terminals on the interface. Use the SPK input if your source unit is not equipped with RCA outputs. Always ensure the correct polarity of each channel when making these connections, as failure to do so can severely effect sound performance.
• Remote Input (REM IN): If the source unit has a remote output wire (provides +12V only when turned on), connect it to the REM IN terminal. If a remote lead is unavailable, all Wāvtech interfaces also provide automatic turn-on via DC-offset and audio signal detection. While auto turn-on will work in most applications, there may be some cases were a +12V trigger is needed for satisfactory results. These signal detect functions can also be individually defeated via internal jumpers if necessary.
• Remote Output (REM OUT): Use the remote output to provide a +12V trigger to turn on amplifiers or other components. This +12V output is generated internally by the interface when turned on either by REM IN or automatic sensing, and will provide over 500mA continuous current for external devices.
• Remote Level Control (RLC): Connect the remote to the linkQ’s RLC port with the supplied 16.4ft/5m cable. Plan cable routing before mounting the remote to ensure proper length. If additional length is required, a standard 8-conductor CAT5 or CAT6 ethernet cable or extension may be used. The cable may also be shortened and re-terminated with a RJ45 connector and ethernet crimping tool.

System Examples

Example-1: Speaker Level Input from OEM Radio

Note: When using a factory receiver’s internal power IC to drive speakers directly and provide signal to the linkQ, note that these speaker level outputs will likely clip below the maximum volume setting. Adjust gain accordingly for optimum unclipped volume range and system output.

Example-2: Speaker Level Input from OEM Amplifier

Note: In factory amplified systems where output from the radio is a fixed level or digital, input signal for the linkQ should be connected at the OEM amplifier’s outputs. If the tapped signal measures more than 20Vrms at maximum volume or if the linkQ’s output is too high for the aftermarket amplifier(s) with all gains at minimum, internal jumpers are available to reduce the input sensitivity range by half (-6dB) allowing input signals up to 40Vrms.

Example-3: RCA Input from Portable Audio Player

Note: Portable devices such as smartphones or MP3 players typically have an output voltage of 1Vrms or less. While the linkQ’s auto turn-on circuit will detect very low signal levels, for best sound perfomance, set the device’s volume to its maximum unclipped output level and use the linkQ’s remote as the system master volume control.

Specifications

Output Impedance ** <50Ω
Max Output Voltage| at 1% THD+N| >10Vrms
THD+N**| Spk Input at 10V output| <0.05%
RCA Input at 10V output| <0.05%

S/N

| ****

Spk Input

| at 1V output| >93dBA
at 4V output| >105dBA
at 10V output| >113dBA

RCA Input

| at 1V output| >95dBA
at 4V output| >107dBA
at 10V output| >115dBA
Paragraphic EQ| Boost| 0dB to +12dB
Frequency (Fc)| 30Hz – 80Hz
Remote Level Control| Volume Range| 0dB to -30dB

Turn-On Trigger

| Remote| via REM IN| >10.5V
DC-offset| via Spk Input| >1.3V

Audio Signal

| via Spk Input| <100mV
via RCA Input| <10mV
Turn-off Delay| up to 60sec
Remote Output| Current Capacity| >500mA
Voltage| Within 3% of B+
Current Draw| Max Draw (w/o REM OUT)| <220mA
Sleep Current| <2mA
Operating Voltage| Power On (B+)| 10.5V-18V
Power Off (B+)| <8.5V

Product Dimensions

| Main Chassis

(HxWxL not incl. terminals/jacks)

| 1.1”x3.5”x3.1”
29x90x78mm
Remote Housing

(HxWxD not incl. knob, tabs)

| 1.1”x1.5”x1.8”
28x38x45mm

Notes

• Speaker level input sensitivity range is selectable via internal jumpers (20V/40V)
• DC-offset and/or audio signal detect functions are defeatable via internal jumpers
• All specifications are subject to change without notice

Installation Notes

Warranty & Service Care

• Wāvtech warrants this product to be free from defects in material and workmanship for a period of one (1) year when purchased from an authorized Wāvtech retailer within the United States. This warranty will be extended to a period of two (2) years when the installation is performed by an authorized Wāvtech retailer. A valid sales receipt is required to verify eligibility of purchase and installation.
• This warranty is valid only to the original purchaser and is not transferrable to subsequent parties. This warranty is void if the product serial number has been altered or removed. Any applicable implied warranties are limited in duration to a period of express warranty as provided herein beginning with the date of the original purchase at retail, and no warranties, whether expressed or implied, shall apply to this product thereafter. Some states do not allow limitations on implied warranties, therefore these exclusions may not apply to you. This warranty gives you specific legal rights. You may also have other rights which vary from state to state.
• If your product needs service, you should contact Wāvtech Customer Service to receive a Return Authorization (RA) Number. Any product received without an RA number will be returned to sender. Once your product is received and inspected by customer service, Wāvtech at its sole discretion, will repair or replace it with a new or remanufactured product at no charge. Damage caused by the following is not covered under warranty: accident, abuse, failure to follow instructions, misuse, modification, neglect, unauthorized repair or water damage. This warranty does not cover incidental or consequential damages. This warranty does not cover the cost of removing or reinstalling the product. Cosmetic damage and normal wear are not covered under warranty.

For Service within the United States: Wāvtech Customer Service: 480-454-7017 Monday – Friday, 8:30am to 5:00pm MST

Important Notice for International Customers:
For products purchased outside the United States of America or its Territories, please contact your local distributor concerning specific procedures for your country’s warranty policy. International purchases are not covered by Wāvtech, LLC.

Wāvtech™

7931 E. Pecos Rd Suite 113 Mesa, AZ 85212 480-454-7017

©Copyright 2018 Wāvtech, LLC. All Rights Reserved.

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