CAISSONS ACCESS - Subwoofer FOCAL - Free user manual and instructions

Product type	Subwoofer enclosure
Brand	Focal
Model	CAISSONS ACCESS (27 Lux / 33 Lux / 40 Lux)
Max power	500 W / 800 W / 800 W (depending on model)
Nominal power	250 W / 400 W / 400 W (depending on model)
Sensitivity (2.83 V / 1 m)	90 dB / 92 dB / 93 dB (depending on model)
Frequency response	36-500 Hz / 39-500 Hz / 42-500 Hz (depending on model)
Recommended crossover frequency	60 - 100 Hz
Recommended wiring	OFC cable, minimum cross-section 2.5 mm²
Connectors	Terminals with polarity marking (+/-)
Mounting kit included	Yes (straps, brackets, screws, template)
Installation	Mounting behind the rear seats
Power supply	Via external amplifier (not specified)
Safety	Respect polarities; do not listen above 110 dB
Maintenance	Clean with a soft, dry cloth
Warranty	1 year (France)
After-sales service	Contact Focal retailer
Package contents	1 subwoofer, mounting kit, 2 straps, 4 brackets, 8 screws, 1 template
Repairability	Contact the retailer or Focal after-sales service

Frequently Asked Questions - CAISSONS ACCESS FOCAL

How to connect the Focal Access subwoofer?

Strictly observe the polarities: the red terminal is positive (+) and the black terminal is negative (-). Use a quality cable, such as Focal FC 300 or FC 500, with a minimum cross-section of 2.5 mm².

What crossover frequency to choose?

The ideal crossover frequency is generally between 60 and 100 Hz. Adjusting by ear or with a measuring device yields the best result.

What amplifier power is recommended?

It is recommended to use an amplifier with sufficient power to avoid clipping. Clipping can damage the speaker. The nominal power ratings of the models are 250 W (27 Lux) or 400 W (33 Lux and 40 Lux).

How to install the subwoofer in the trunk?

Place the subwoofer behind the rear seats in the trunk. Use the provided template to mark the drilling points, then attach the metal brackets with screws. Thread the straps around the enclosure and tighten them securely. Ensure the straps do not interfere with the speaker.

What to do if the voice coil is burnt?

A burnt voice coil often results from misuse or incorrect wiring. This type of damage is not covered by warranty. Contact your Focal retailer for a repair quote.

What is the warranty?

In France, the warranty is one year from the date of purchase. It is not transferable upon resale. For other countries, conditions are set by the local official Focal distributor.

How to clean the subwoofer enclosure?

Use a soft, dry cloth to dust the surface. Do not use chemical or abrasive products that could damage the finish.

Can I place the enclosure elsewhere than behind the seats?

Yes, it can be positioned on the left, center, or right of the trunk, since bass frequencies are non-directional. The driver or passenger side location does not affect sound quality.

What to do in case of a malfunction?

Contact your Focal retailer. If the product is under warranty, it will be repaired or replaced. Otherwise, a repair quote will be provided. Ship the product in its original packaging.

Which cables to use for connection?

Use quality OFC (oxygen-free copper) cables with a cross-section of at least 2.5 mm². Focal FC 300 and FC 500 cables are recommended for minimal loss.

USER MANUAL CAISSONS ACCESS FOCAL

Pure geometric diagram showing a table and a plane with no text, numbers, or symbols

2> 1/4+ - 6 ②

Notice Caissons Access

27 Lux - b ③

Pure architectural line drawing of a staircase with stairs and legs, no text or symbols present

Technical line drawing of a mechanical device with a meshed component and a numbered label (5), no readable text or symbols present.

Technical line drawing of a mechanical component with labeled parts (no readable text or symbols)

4

Notice Caissons Access

Congratulations on choosing Focal automobile speakers.

To gain the best results from your speakers, please ensure you follow these recommendations.

If not followed correctly any fault observed may not be covered by the guarantee.

Each Focal subwoofer has been designed to operate within a specific box volume.

Recommended volumes and alignments are provided to ensure optimum results.

Included

• 1 x subwoofer

• 1 x fixing kit

• 2 x Nylon straps

• 4 x metal support brackets
• 8 x fixing screws
• 1 x template

Connections

It is essential that correct polarity be observed with subwoofers. Positive is marked in red, negative in black.

Wiring

The quality and gauge of wire used will have a strong effect on the quality of sound.

Focal Audiomobile recommend a minimum specification of 2.5mm^2 oxygen free copper (OFC) wire for subwoofers. Ask your dealer for advice on your specific installation. We recommend the use of Focal FC 300 and FC 500 cables.

Adjusting the cut-off frequency

The ideal cut-off frequency is usually between 60 and 100 Hz. Optimum adjustment can only be achieved after listening and/or measuring.

Recommended power

Focal Audiomobile subwoofers have high power handling characteristics. It is therefore important to choose an amplifier powerful enough to drive them properly. An amplifier that is too small will distort quickly, limiting the level and quality of the sound and eventually causing damages to the loudspeakers.

Access Enclosures Manual

Warning!

The high output and power handling of Focal Audiomobile subwoofers means that high sound pressure levels can be reached. We remind you that listening to music at levels beyond 110dB can permanently damage your hearing.

Installation

We have taken time to design a product that will work exceptionally well. To add to this we have included a fixing kit to ensure the subwoofer remains securely mounted. Please follow the below mentioned steps to ensure the subwoofer is mounted correctly.

1 - Rear seats must be positioned in their normal fixed position.
2 - Decide the best location possible that suits your automobile and space available. We recommend the best location for optimum sound quality and most secure is to position behind the rear seats, in the trunk of the automobile. It can be positioned in either left centre or right side locations. This will not change the sound quality, as bass frequencies are not directional.
3 - Ensure the area for subwoofer location is clean and tidy. Any loose objects are removed, as they could knock and damage the subwoofer, and this is not covered by the warranty.
4 - Once the location has been decided, carefully attach the fixing template with scotch tape. (Image 1)
5 - Now mark the screw hole positions for the fixing brackets. (Please verify with template.)

Pure geometric line drawing of a 3D object with no text, numbers, or symbols

27 L4x - 6 ②

Access Enclosures Manual

6 - Drill two holes 2 mm for the 4 x fixing brackets, at your defined locations. It is advisable that the drill depth be reduced to a minimum length, so to prevent drilling to deep into the textile of the seat. (Image 2)
7 - Now carefully position the brackets and screws into place. (Image 3)
8 - Now take the two fixing straps and thread through the aperture available on the fixing bracket. (Image 4)

27 Lux - b ③

Line drawing of a table with legs and chairs, showing structural connections (no text or symbols)

9 - Now place the subwoofer into position, remove the grille and lay the straps around the cabinet. (these must be positioned at the extremity of cabinet, as indicated on diagrame, this ensures the straps do not interfere with the driver or port tube. Ensure the straps are flat and untangled. (Image 5)
10 - Attach the straps, close the loop, and pull tight. (Image 6)

Technical line drawing of a mechanical assembly with no visible text or symbols

Technical line drawing of a mechanical assembly with no visible text or symbols

8

Access Enclosures Manual

11 - Ensure the cabinet is securely fastened into position. Adjust straps if necessary to maintain a secure hold to the rear seat.
12 - Now add the grille.
13 - Your subwoofer is ready to use.

Technical specifications

	27 Lux	33 Lux	40 Lux
Maximum power handling	500 W	800 W	800 W
Nominal power handling	250 W	400 W	400 W
Sensitivity (2,83 V / 1 m)	90 dB	92 dB	93 dB
Frequency response	36 Hz-500 Hz	39 Hz-500 Hz	42 Hz-500 Hz

Guarantee

In the unlikely event of any problem, please contact your Focal Audiomobile retailer.

Outside of France, all Focal speakers are covered by the guarantee drawn up by the official Focal distributor in your country. Your distributor can provide all details concerning the conditions of guarantee. Guarantee cover extends at least the legal minimum period in force in the country where the original purchase invoice was issued.

In addition to Car hi-fi systems, Focal-JMlab offer personalized solutions for your home audio equipment. Enjoy at home the renowned Focal sound for your hi-fi cinema system. At your disposal are four product lines available from the French leader in loudspeaker design & manufacturing. Share our passion for the spirit of sound and make it yours.

The Spirit of Sound / www.focal-fr.com

CE

9

International Guarantee

THE FOCAL GUARANTEE ONLY APPLIES IF THIS PAGE IS RETURNED TO US WITHIN 10 DAYS OF PURCHASE, TO THE FOLLOWING ADDRESS :

Focal-JMlab

ZI Molina la Chazotte

Name of dealer: ____, Town: ____.

Date of purchase: ____. Purchase price: ____.

Your name: ____. Age: ____. Occupation: ____.

Your complete address: ____.

Details of your installation (brand, model):

■ Car: ____. ■ CD player: ____.

■ Head unit: ____ ■ Amp. - Preamp.: ____

■ Cable: ____ ■ Accessories: ____

Your decision for purchasing this Focal model was made according to:

□ Dealer's advice □ Friend's advice
□ Visit to an exhibition, show □ Press article
□ Listening in auditorium □ Already own Focal-JMlab products
□ Reliability / Quality □ Brochures
☐ Reputation ☐ French produce
□ Guarantee □ Quality / Price ratio
□ Design / Finishes □ Other ____.
Sound

If you have purchased a new system, what was the make of your former equipment? ____.

Explain in a few words why you choose Focal...

Further comments: ____

POUR VALIDATION DE LA GARANTIE FOCAL, MERCI DE NOUS RETOURNER CETTE PAGE DANS LES 10 JOURS, À L'ADRESSE SUIVANTE :

Focal-JMlab

ZI Molina la Chazotte