Wavtech LinkD Bedienungsanleitung

www.wavtech-usa.com

Owner’s Manual

Bass Processor / LOC / Line Driver

Parametric EQ Ÿ24dB/Oct Crossover ŸRemote Level Control

• 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.

• D O 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.

WARNING

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.

• 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.

CAUTION

Package Contents:

Main Unit Terminals

(2pcs, detachable)

Accessories Required for

Installation (not included):

Mounting Tabs

(2pcs, detachable)

ŸRCA Interconnects

Ÿ18AWG Wire

ŸIn-line Fuse Holder w/1A fuse

ŸBattery Ring Terminal

ŸGround Terminal

ŸWire Crimp Connectors

ŸGrommets and Loom

ŸCable Ties

ŸMounting Screws

Remote Level Control

Remote Cable

(16.4ft / 5m)

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.

Œ Power Indicator: This red LED indicates when the bassFREQ 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.

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.

ŽPower 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.

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 setting. Dynamic music signal peaks are allowable up to 40Vrms, but will

be clipped. Use this input if your source unit does not have RCA outputs.

RCA Input Jacks: For left and right channel low level (a.k.a. line level) signal connections to the source

unit. These two channels are summed and processed internally in mono. Input signals ranging from

0.5Vrms to 5Vrms will produce up to 10Vrms RCA output at maximum to minimum gain setting.

‘Remote Level Control Jack: This RJ45 jack is for connecting the supplied cable to the external level

control unit for remote mounting. A standard ethernet cable may also be used.

’RCA Output Jacks: These mono line level outputs are for signal connection to your ampliﬁer(s). Each

output is an independent internal circuit, both capable of driving multiple ampliﬁers simultaneously.

Use quality interconnects to ensure stable connection and minimize the possibility for induced noise.

“Mounting Tabs: These mounting tabs are pre-attached and should be used to properly secure the

bassFREQ during installation with screws or cable ties. They are removable if the unit can be safely

secured by another method.

Connections & Functions

Features

ŸBass Enhancement Processor

 Fully Adjustable Parametric EQ

Variable Subsonic Filter (-24dB/Oct.)

Variable Low Pass Filter (-24dB/Oct.)

Variable Gain with Clip LED

Remote Level Control

ŸLine Output Converter or Line Driver

ŸDiﬀerential Balanced Inputs

Ÿ Low Impedance Dual Mono Drive Outputs

ŸAuto Turn-On via DC-Oﬀset or Audio Signal Detect

ŸGenerated +12V Remote Output

ŸOEM Load Detect Compatible

ŸSelectable Ground Isolation

ŸProfessional Grade Panel Mount RCA Output Jacks

ŸDetachable Power and Speaker Input Terminals

ŸAluminum Chassis w/Detachable Mounting Tabs



Ž 



‘

’

“

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 bassFREQ 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 are also enabled

with an automatic turn-on circuit that detects audio signal via RCA or SPK inputs, and DC-oﬀset from SPK

inputs. While auto turn-on will work in most applications, there may be some cases were detection level

is not satisfactory and +12V trigger to REM IN may be required.

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 of constant current for external devices.

Example-1: Speaker Level Input from OEM Radio

System Examples

Note: In vehicles where the factory radio has a ﬁxed level or digital output to a factory ampliﬁer, signal for the

bassFREQ’s speaker level input should be connected at the ampliﬁer’s output.

Example-2: Speaker Level Input from OEM Ampliﬁer

SPK IN

REM OUT

RCA OUT

+12V

GND

RLC

REM OUT

SPK IN

RCA OUT

+12V

GND

RLC

Note: When using a receiver’s internal power IC to drive speakers directly, note that its speaker outputs will likely clip

below the maximum master volume level. Adjust gain settings accordingly for optimum unclipped volume range.

ŒClipping Indicator: This yellow LED indicates when the output signal is at maximum level before

distortion (clipping) occurs. It will be dimly lit at onset of clipping, and full bright under hard clipping.

If the connected ampliﬁer(s) input can handle full 10Vrms output from the bassFREQ, then the gain is

set correctly when source unit is at its maximum unclipped volume and this LED is just starting to

ﬂicker. It is likely, however, that gain will need to be reduced to match your ampliﬁer(s) maximum

input capability or optimize source volume range and desired output vs main full-range speakers.

Gain Adjustment: Gain adjustment is for matching the output signal level of the bassFREQ 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. Gain will likely need to be adjusted again

after all equalizaton and crossovers have been set. Aside from music, a 50Hz -10dBfs signal tone or

frequency sweep may be used between the chosen crossover points during the tuning process to

ensure proper headroom and gain overlap for typical music recording levels.

ŽBass Processor: This parametric EQ section provides full adjustment of all parameters of a single EQ

band, including boost, width and frequency. Unlike traditional bass boost, a parametric EQ provides

the tuning ﬂexibility required for diﬀerences between vehicles, subwoofers and enclosures.

Boost: Provides adjustment for the amount of boost at the

center frequency (Fc) set for the parametric EQ band, up to

+12dB. If gain has already been adjusted, adding boost may

cause the output to clip and require reduction of gain to

achieve ﬁnal desired unclipped output level.

Width: Also known as Q, this adjustment sets the

bandwidth (BW) of the parametric EQ band. A wide

setting will include more adjacent frequencies for a

broad boost, while a narrow setting will only boost

frequencies close to the chosen center frequency (Fc).

The range of Q adjustment is 1.5 (wide) to 5 (narrow). To

calculate the range of frequencies boosted between the

-3dB points of the EQ band, use the formula BW = Fc/Q.

ðExample: If freqency is set at Fc = 50Hz, and width is set at narrow (Q=5), then the boosted

bandwidth will be 50Hz/5 = 10Hz, meaning -3dB at 45Hz and 55Hz.

‘Frequency: This adjustment is for setting the center frequency (Fc) of the parametric EQ band,

between 30Hz and 80Hz.

Top Panel Adjustments

Boost (dB)

Freq (Hz)

BW = F2-F1

F2F1

3dB

Example-3: RCA Input from Aftermarket Radio

+12V

GND

RLC

REM

RCA IN

RCA

OUT

REM

OUT



  ‘

’

“”

Note: Other devices such as smartphones or MP3 players may also be used as the main system source via the RCA input,

which typically produce 1Vrms output or less. While the bassFREQ’s auto turn-on circuit will detect very low signal levels,

it may be necessary in some cases to adjust gain for reasonable listening levels but with reduced master volume range.

Note: Speciﬁcations are subject to change without notice.

Speciﬁcations

10Hz - 250Hz

5Hz - 400Hz

180Ω

20kΩ

2 - 20Vrms

0.5 - 5Vrms

Spk Input <5sec 40Vrms

RCA Input <60sec 15Vrms

Output Impedance <50Ω

Max Output Voltage >10Vrms

50Hz - 400Hz

5Hz - 40Hz

at 1V output >99dBA

at 4V output >110dBA

at 10V output >118dBA

at 1V output >110dBA

at 4V output >120dBA

at 10V output >128dBA

Remote via REM IN >10.5V

DC-oﬀset via Spk Input >1.3V

via Spk Input <100mV

via RCA input <10mV

Turn-oﬀ Delay up to 60sec

>500mA

Within 3% of B+

<300mA

<2.5mA

10.5V-18V

<8.5V

1.1”x3.5”x5.2”

29x90x133mm

Product Dimensions Chassis (not incl. terminals)

Power Oﬀ

Max Draw (w/o REM OUT)

Sleep Current

Power On

Max Flat (+0/-1dB)

Extended (+0/-3dB)

Spk Input

RCA Input

Spk Input (max-min gain)

RCA Input (max-min gain)

Current Draw

Operating Voltage (B+)

Audio Signal

Turn-On Trigger

RCA Input

Spk Input

S/N (signal-to-noise)

Remote Output

at 1% THD+N

Frequency (F3)

Slope

Current Capacity

Voltage

Input Impedance

Input Sensitivity

Max Input Voltage (peak)

Low-Pass Filter

Frequency response

1.5 to 5

30Hz - 80Hz

Width (Q)

Frequency (Fc)

Parametric EQ

Boost 0dB to +12dB

-24dB/Oct.

Frequency (F3)

Slope

Subsonic Filter

-24dB/Oct.

Spk Input at 10V output

RCA Input at 10V output

THD+N <0.1%

<0.1%

’Crossover: This section is for selecting the cut-oﬀ frequencies for the low-pass ﬁlter (LPF) and

subsonic ﬁlter (a.k.a. infrasonic or high-pass).

“Subsonic: Provides adjustment of the lower cut-oﬀ point, below which all frequencies are ﬁltered

out at -24dB/Oct. Very low freqencies can waste ampliﬁer power and damage subwoofers. This

adjustment is especially important for ported enclosures to prevent over-excursion below the

tuning frequency.

”LPF: This low-pass ﬁlter adjustment sets the upper cut-oﬀ point, above which all freqencies are

ﬁltered out at -24dB/Oct. Unwanted high frequencies allowed to come through subwoofers can

cause boomy, buzzy bass that is easy to localize. With a steep -24dB per octave slope, the cut-oﬀ

frequency can be set higher, allowing more punch with less distortion and optimum integration

with main full-range speakers for up-front bass.

Notes:

The subsonic and low-pass ﬁlter stages are at the end of the internal circuit signal chain so that any

overlapping frequencies from the parametric EQ will still be ﬁltered at the set crossover points.

Setting the subsonic and low-pass ﬁlter cut-oﬀ points too close together will allow only a very narrow

frequency range to pass and will result in reduced output.

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.

Installation Notes

Vehicle Description

ŸYear, Make, Model:

ŸTrim Level / Package:

OEM Audio System Info

ŸHead Unit (type, BT/AUX in, etc.):

ŸSpeakers (size/location, etc.):

ŸSubwoofer(s) (size/location, etc.):

ŸAmpliﬁer(s) (location, output voltage, etc.):

ŸOther:

bassFREQ Connections & Settings

ŸInstalled Location:

ŸWiring (connection locations, signal type, turn-on mode, etc):

ŸSettings (gain, max master vol, crossover, etc.):

ŸOther:

System Conﬁguration:

Serial Number:

Installation Date:

Place of Purchase:

Wāvtech™

7931 E. Pecos Rd

Suite 113

Mesa, AZ 85212

(480) 454-7017

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