AC25SX - Car hands-free kit Axton - Free user manual and instructions

USER MANUAL AC25SX Axton

Thank you and congratulations on your purchase of this AXTON AC 2-way component system. This loudspeaker system uses very high quality parts and components only. As with all high-quality car audio components, professional installation is highly recommended. If you plan on installing this component system by yourself, please read the following installation guide carefully, before you attempt the installation. You should retain this manual, the packing and the purchasing receipt for future reference. For any further information about mounting, connecting or adjusting this speaker system, please contact your authorized AXTON dealer.

UNPACKING THE SYSTEM

Carefully remove the loudspeakers, crossovers and the accessories from the giftbox and check whether all parts are in good undamaged condition, and match with the set contents listed below:

■ 2 mid/woofers
■ 2 grilles
■ 2 AT25 tweeters
■ 2 crossovers with attached wires for tweeter and mid/woofer
■ 1 set of tweeter & mid/woofer mounting hardware
■ 1 instruction manual with warranty card

Please contact your authorized AXTON dealer if the content of this set is incomplete or parts of it show signs of transport damage.

BEFORE YOU START

The first step is to choose the most suitable or best sounding location for the speakers to be installed. Keep in mind that the best looking spot might not be the one that gives you best sound. The factory OEM speaker cutouts usually provide space and a stable platform for fast and convenient mounting of new mid/woofer units. To use the OEM speaker cutouts is highly advantageous in most cases and it will also prevent you from having to cut new holes. For the tweeter mounting, some extra care to find the best spots will usually pay back in form of improved front staging or/and better resolution.

MOUNTING THE MID/WOOFERS

Remove the factory grilles of the door - or if necessary - the complete door panels. The 13 / 16.5 cm EURO-DIN frame mid/woofer units provide bolt and screw holes to fit a great variety of OEM standard patterns, making them ideal for a direct replacement of factory installed speakers in European or Asian cars.

■ Remove the factory installed mid/woofers or fullrange speakers. Before you attempt to install the new AXTON mid/woofers, you must check the available installation depth of the left and right front door. To do this, slide down both windows and hold the AXTON mid/woofers in place to reassure the available installation depth does suffice. This test is important, failure to do this may let you end up with an impaired window function!
■ Look out for a good location to mount the crossovers. Consider that the x-overs should remain accessible for tweeter level adjustment after the installation of the speakers is completed. Potential places to mount your x-overs are under the dashboard, inside the doors, a.s.o.
■ Connect the crossover wires to the blade connector terminals of the mid / woofer units.
- Check that there are no gaps between the speakers and the mounting surface in the doors. Note that some (newer) cars will require the use of car-specific mounting adapters made of pastic material. Without them, the Euro-DIN mid/woofers will not fit to the OEM cutout, or the available installation depth will not be sufficient. Such adapters are usually available from your authorized AXTON dealer.
■ The cone and surround material of the mid/woofers is 100% water proof. However a direct exposure of the mid/woofer to water inside the doors should be avoided. In most cases, protection foils are pre-installed to protect the OEM full-range speaker. Do not rip this foil out of the doors, it is there for a purpose!
- Fix the mid/woofer to the speaker mounting hole using the provided screws. If the mid/woofers are directly screwed onto the sheetmetal of the door, use the metal clips included with the mounting hardware. You can now reinstall the factory plastic grilles, but make sure the surrounds of the mid/woofers do not come in touch with plastic parts standing off on the backside of the grilles.
In case you have chosen a new location for your mid/woofers (other than factory cut-out), use the speaker protection grilles. Just mount them on top of the mid/woofers.

TWEETER MOUNTING LOCATION

The tweeter positioning does exhibit a direct and profound influence on the front staging of your component system. Depending on the chosen location where the tweeters will be installed, different loudness levels in the high-frequency region will result. The tweeter level can be adjusted on the pc board of the x-over, to compensate for different mounting locations.

■ To determine the best tweeter location, it may be necessary to carry out short listening tests with the tweeter mounted to different locations inside the vehicle. For this, double sided tape can be used.

■ Set all tone controls, i.e. pre-EQ, treble / bass and loudness functions of your headunit to the neutral position first, before you attempt any listening test of the speakers installed in your car.

⚠ Attention: The influence of the tweeter mounting location on the front staging remains – and care

must be taken to achieve a good compromise between unobtrusive mounting and good sound quality.

Examples of different tweeter mounting locations, and the results that are most frequently obtained, are explained below:

1 A-Pillar

Best option concerning the depth of image and overall sound balance of the component system. Not that easy to get right, i.e. serious mounting efforts involved.

2 Dash Board

Sometimes aggressive sound and overly brilliant treble reproduction caused by the horn loading effects of the front window. Setting tweeter ATT switch to -3 dB may help.

3 Window Triangle

Bright sound combined with a high soundstage, sometimes sounding a bit “nervous” with some side biasing too.

4 On the upper end of the door panel

Balanced sound with good staging qualities

5 Right on top of the mid/woofer

Good staging, but often “dull” sound, especially with a person sitting on the passenger's seat.

Note: A “on-axis” installation (with tweeters directly pointing at the listener) is not required, neither recommended.

Tweeters directly aiming at the listener's ears are usually responsible for the unwanted "side-biasing" effect, where the sound seems to originate from the drivers, instead of floating on top of the dashboard.

The tweeters come with swiveling function, play around with it – but don't overdo the job!

TWEETER INSTALLATION

There are two ways to install the AT25 tweeters: Angled surface or fully recessed mounting.

Flat Surface Mounting

The tweeter system consists of three parts: The main tweeter unit, the backside of the housing adapter and the front ring.

■ Mark the location where you are going to mount the tweeters. Drill three holes on each side, one main hole with a bigger diameter for the wire and two small pilot holes for the two screws fixing the tweeter housing to the mounting surface.
■ Mount the adapter cup with two flathead screws.
■ Feed the wire through the hole and connect it to the wire extension that goes to the crossover. Align the front ring over the the tweeter main housing, push it down and turn the ring clockwise to fix it in place (bayonet design).

Flush Mounting

After choosing the best mounting location, make sure there is at least 25 mm of clearance behind the mounting surface (for the tweeter cross-spring!), before you start to mark or cut anything!

Cut a hole with exactly 52 mm diameter into the mounting surface using a power drill and a circle cutter tool.

Secure the flush mount tweeter adapter in the cutout with the metal cross blade and the two machine screws provided in the mounting accessory kit. Push the main tweeter down into the rear cup with the frontring on top, turn clockwise to lock it. Feed the wire through the center hole of the cup and attach the wire to the extension cable that goes to the crossover.

CROSSOVER WIRING & MOUNTING

The crossover can be mounted in almost any location inside the vehicle. Recommended places are: Inside the door, under the carpet in front of the door angles, under the dashboard a.s.o. Just make sure not to install the crossover units, where they may be exposed to dirt or excessive moisture / water.

Connect the tweeter wires, the wires from the mid/woofers and the main wires coming from the amplifier to the crossover. Maintain polarities all the way – double check for correct connection. It is very important to make sure that all the connections are electrically in phase, which means positive wire (+ or red) is connected to positive terminal, and negative wire (- or black) is connected to the negative terminal.

The wires are equipped with the right fast-on connectors, to make sure polarity is correct. Reverse polarity connections, i.e. when a mid/woofer is concerned, will cause a very low bass output and a messed up front staging.

If longer distances from the amplifier to the crossovers have to be overcome, use good quality speaker cables with a minimum cross section of 2.5mm^2 . Failure to do so will affect sound quality in a negative way.

X-OVER ADJUSTMENTS

The AXTON SX component set crossovers come with an adjustment option that allows you to tailor the sound by setting slide a switch on the pc board, to compensate for different mounting locations of the speaker units.

The -3dB position is usually the setting that provides a good tonal balance for most installs, while the 0dB position leaves you with a slight excess of energy in the treble region.

Cable mid/woofer with fast-on connector Switch for tweeter level -3dB/0dB -3dB 0dB Input terminal Cable tweeter with fast-on connector

TESTING THE INSTALLED SYSTEM

Slowly turn up the volume of your head unit, and listen for distorted sounds. If everything appears to be okay and it just sounds right, check out the speaker balance of the left and right side by adjusting the balance control of your headunit. Shifting the balance to the left channel should provide you with sounds coming solely from the left speaker system, while shifting the balance to the right should do the same for the right speakers. If anything appears to be wrong, you must recheck the wiring of the x-overs, the amp or the mid/woofers.

TECHNICAL SPECIFICATIONS

AC25SX AC26SX

Type Component Component
Nominal Size 51⁄4” (13 cm) 61⁄2” (16.5 cm)
Configuration / System 2-Way 2-Way
Peak Power Handling 140 W 160 W
Continuous Power Handling 100 W RMS 120 W RMS
Crossover Slope LP Mid/Woofer	6dB / oct.	6dB / oct.
Crossover Slope HP Tweeter 12dB / oct.		12dB / oct.
Crossover Frequency	4500 Hz	4500 Hz
Nominal Impedance	4 Ohms	4 Ohms
Sensitivity	90 dB	91 dB
Frequency Response (- 3dB) 70 Hz – 25 kHz		60 Hz–25 kHz

Mid Woofer

Basket (EURO-DIN)	51⁄4” (13 cm)	61⁄2“ (16.5 cm)
Mounting Depth	62 mm	66 mm
Mounting Diameter	118 mm	144 mm

Tweeter

Overall Diameter	52 mm	52 mm
Mounting Height (flat surface)	31 mm	31 mm
Mounting Diameter (recessed)	52 mm	52 mm

WARRANTY CONDITIONS

AXTON warrants this 2-way component speaker system and it's parts to be free of defects in materials and workmanship for two years from the date of purchase at retail, contingent upon being properly installed and approved by an authorized AXTON dealer.

AXTON Inc. will at its own discretion repair or replace any mechanically defective speaker unit or crossover during this warranty period.

Should your AXTON component system – or parts of it – require warranty service, please return it to the retailer from whom it was purchased. Please do not send any product to AXTON. Should you have difficulty in finding an authorized AXTON service center, details are available from the national distributor in the country of purchase.

Abuse of this component speaker system due to excessive amplifier power, improper installation, amplifier clipping or physical damage is not covered under warranty.

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