User Guide

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INSTALLATION EXAMPLES AND HOOKUP DIAGRAMS -

Assuming you conform to numbers 1-5, and it isn’t all that hard to do,

we get the option of deciding whether to fix your old unit or replace it with

a new one.

LEGALESE SECTION

This is the only warranty given by AudioControl. This warranty gives

you specific legal rights which vary from state to state. Promises of how

well your 2XS will work are not implied by this warranty. Other than what

we’ve covered in this warranty, we have no obligation, expressed or

implied. Also, we will not be obligated for direct or indirect consequential

damage to your system caused by hooking up the AudioControl 2XS.

Failure to send in a properly completed warranty card negates any

service claim.

2XS SPECIFICA2XS SPECIFICA

2XS SPECIFICA

TIONSTIONS

TIONS

All specifications are measured at 14.4 VDC

(standard automotive voltage)

Frequency Response......................................................... 15Hz-20kHz;±1dB

Total Harmonic Distortion (25Hz-20kHz) ......................................... 0.005%

Signal to Noise Ratio (rated full output) ............................................. 115dB

Maximum Output Level ................................................................... 9.5 Vrms

Crossover Slope......................................................................... 18dB/Octave

Crossover type .......................................................................... State Variable

Crossover frequencies ................................set at 90Hz (

user programmable)

PFM filter slope ......................................................................... 18dB/Octave

PFM filter frequency ..................................set at 33Hz (user programmable)

Power supply .......................... transformer isolated PWM DC/DC converter

Power draw.......................................................................................... 150mA

Recommended fuse rating .................................................................... 1 Amp

Size .......................................................................... 1.15"h x 5.5"w x 4.65"d

Weight...................................................................................................... 2 lbs

Balanced In ................................................................................................. yes

Input Ground Isolation jumpers ................................................................. yes

Output Ground Isolation jumpers .............................................................. yes

Country of Origin .................................................................................. U.S.A

2XS BL2XS BL

2XS BL

OCK DIAGRAMOCK DIAGRAM

OCK DIAGRAM

Simple 2-channel, 2 Way System

2-Channel, 3 Way System

QUICK REFERENCE GUIDE TO INSTALLING THE 2XS

If you can install a power amplifier or speakers, you won’t have any

trouble installing the 2XS. Two cables in, four cables out, connect the

power, ground, & remote turn-on and you’re in business. If this is a little

more than you can swallow in one sitting, read on because we’ve gone

ahead and talked each individual facet of the 2XS to death. You don’t

have to read it, but it will help you understand some of the more

sophisticated features of the 2XS.

MOUNTING: The 2XS can be mounted in many parts of the car,

depending on the vehicle’s configuration. Behind the dash, under a seat

and in the trunk are possibilities, in increasing order of distance from the

head end. The farther away, the greater the resistance in the cables,

which can cause signal or power loss. Use 100% shielded cables for the

best results. Wherever you mount the 2XS, take the following into

consideration:

* Don’t mount it near heaters, closed spaces or other places where

it will get really hot.

* The mounting location must be safe from water or beer seepage.

* The 2XS must be firmly mounted to the car. This

protects connections from breakage and stress as well as the

possibility of it becoming un-attached when you blast over the

occasional speedbump.

* Analyze the potential location carefully to make sure that

mounting screws won’t pierce a gas tank, gas/brake/or electrical

lines.

* The 2XS has been designed with very high quality

parts and in a manner which reduces mass-related circuit board

stress (a typical failing of lots of car gear). Still, all electronics

have a limit to environmental stress, so no fair mounting it to the

front bumper or under the oil pan.

AUDIO WIRING: The main idea is to minimize potential signal

interference and noise. That means using good quality 100% shielded

audio-type RCA cables. Since the 2XS has a very low output impedance,

cable noise pick-up OUT of the 2XS is not a problem.

The head unit that feeds the 2XS however, could have a medium

output impedance (2k to 10k ohms) and long cable lengths could be a

problem. That’s why we suggest mounting the 2XS as close as possible

to the head unit. The cables going from the deck to the 2XS must be the

best you can get. Not cheapo stranded shield with 50% shielding. Try to

hold out for the trusty 100% shielding to cut noise in this critical run. Of

course, if you are utilizing the balanced input circuitry in the 2XS, this

will also minimize your chance of noise.

POWER WIRING: The 2XS’ +12 volt and ground (-) connections

should be made with 18 gauge wire or better. Just insert the wire into

the nifty connector and tighten the screw.

2-channel, 2 Way with the Epicenter and Equalization

page 8

page 9

page 10 page 11

NOTE: The resistors used must be ¼ watt and at

least 5% tolerance carbon film, or 1% tolerance metal film.

A BLATANT PLUG FOR OTHER AUDIOCONTROL PERFORMANCE

MATCH PRODUCTS

The 2XS is only one component in the AudioControl Performance Match

line designed to extract “killer” performance from your car stereo system.

Basically, there are real world barriers to good auto sound such as the fact that

doors and trunks rarely make good speaker boxes. AudioControl Performance

Match products, like the Concert Series 2XS, EQX

, EQL

, EQT

, and the

new MVC

(Master Volume Control) allow you to adjust or “voice” compo-

nents to the specific acoustics and equipment in your stereo system whether it

is a sleek Honda or a stylish Buick. The result is, as one warranty card stated;

“A dream come true.”

THE AUDIOCONTROL CONCERT SERIES 2XS

LIMITED WARRANTY

People are scared of warranties. Lots of fine print, lots of non-cooperation,

months of waiting around. . .

Well don’t be scared of this warranty. It’s designed to make you rave about

us to your friends. It’s a warranty that looks out for you and helps you resist

the temptation to have your friend who is “good with electronics” try to repair

your AudioControl 2XS. So go ahead and read through this warranty, then

enjoy your new component for a few days before sending in the warranty card

and comments.

“Limited” doesn’t mean anything ominous. The Federal Trade Commission

tells all manufacturers to use the term to indicate certain conditions have to be

met before they’ll honor the warranty. IF you honor these conditions, we will

warrant all material and workmanship on your Concert Series 2XS for FIVE

YEARS from the date of purchase if installed by an authorized AudioControl

dealer, and will fix or replace it, at our option, during that time. For you “do-

it-yourselfers”, we offer you the same warranty for one year.

Here are the conditions that make this warranty conditional:

1. You have to fill out the warranty card and send it to us within 15 days

after you purchased your 2XS.

2. You must keep your sales slip or receipt so you have proof of when and

where you bought your 2XS. We’re not the only company to require this, so

it’s a good habit to be in with any stereo purchase.

3. Your 2XS has to have been originally purchased from an authorized

AudioControl dealer. You do not have to be the original owner to take

advantage of the warranty, but the date of purchase is still important so be

sure to get a copy of the sales slip from the original owner.

4. You cannot let anybody who isn’t; (a) The AudioControl Factory;

(b) an authorized service center; or (c) someone authorized in writing by

AudioControl, service your 2XS. If anyone other than (a), (b), or (c) messes

with your 2XS, that voids the warranty.

5. The warranty is also void if the serial number has been altered or

removed, or if the AudioControl 2XS is used improperly. Now, that sounds

like a big loophole, but here is all we mean by it; unwarranted abuse is: (a)

Physical damage (our mobile products are not meant to be used as jack stands

for your car): (b) Improper connections. We have done the best we can to

protect the inputs. However, 120 volts into the input jacks can fry the innards

of the poor beasty: (c) Sadistic things. This is the best mobile product we

know how to manufacture, but if you use it for the front bumper of your Baja

bug and get it full of water and dirt, things will go wrong.

= Resistance Value (in Kilohms)

NOTE: As always, you should disconnect the negative terminal of the

car’s battery before working on electrical connections.....Unless you want

an extra tingle in your day.

GROUNDING THE SOURCE UNIT BEHIND THE DASH AND

EVERYTHING ELSE TO THE FRAME IN THE REAR ALMOST

CERTAINLY GUARANTEES THAT YOU WILL HAVE A GROUND

LOOP. USE A SINGLE GROUND POINT THAT YOU KNOW IS

COMMON WITH OTHER GROUNDED PARTS OF THE STEREO

SYSTEM. TO MINIMIZE NOISE, MAKE THE CONNECTION WITH

NO LESS THAN 18 GAUGE MULTI-STRANDED WIRE.

OUTPUT LEVEL CONTROLS: These controls provide two useful

functions. First they allow you to control the overall balance between the

high frequency output and the low frequency output. Second they can

provide extra signal gain or cut if needed. Many head units have very

weak output levels - in this case both controls can be operated on the

“max” side. If the output is extremely high you can operate the controls

on the “min” side to match hi/low balance as well as to match overall

levels to the power amps.

CROSSOVER FREQUENCY SELECTION

We recommend that the crossover frequency be based on the design

criteria of the low and high frequency speakers. For example, a 2-way

system with 12" woofers for low frequencies and 5 ¼" 2-way separates for

midrange and high frequencies should utilize a crossover point based on

how low the 5 ¼" and how high the 12" will play.

Design for the system, not the woofers alone. We designed the 2XS

with a fixed but PROGRAMMABLE crossover. This is the most reliable

and accurate design. It will not change frequencies over time the way

knob adjustable crossovers will, and that is a really good thing.

MAKING YOUR OWN CROSSOVER MODULE

We have provided the 2XS with a 90Hz resistor module, ALREADY

PLUGGED IN. This is a common mid/treble dedicated woofer crossover

point.

Additional crossover and PFM filter modules are available from your

authorized AudioControl dealer. If you are good with a soldering iron you

can build your own modules by using the following formula:

7200

Selected Frequency(Hz)

Example: For a 2500Hz module, the formula yields a resistor value of

7200 ÷ 2500=2.88Kohms.

The 18dB crossover module requires six resistors of this value.

Note: Center remains open