POLYGLASS ENCLOSURES - Speakers FOCAL - Free user manual and instructions

Product type	Car subwoofer (enclosure)
Brand	Focal
Model	Polyglass Enclosures (SB27 V1 / SB33 V1)
Maximum power	500 W (SB27) / 800 W (SB33)
Nominal power	250 W (SB27) / 400 W (SB33)
Sensitivity	90 dB (SB27) / 92 dB (SB33) (2.83 V/1 m)
Frequency response	36 Hz - 500 Hz (SB27) / 38 Hz - 500 Hz (SB33)
Cone technology	Polyglass
Enclosure type	Bass-reflex with internal damping
Connections	Spade terminals (red positive, black negative)
Recommended wiring	OFC cable with cross-section ≥ 2.5 mm²
Crossover frequency adjustment	60 Hz - 100 Hz (recommended)
Installation	Mounting kit included (straps, brackets, screws, template)
Warranty (France)	2 years
Maintenance and cleaning	Dry cloth, avoid moisture
Safety	Do not exceed 110 dB for prolonged listening
Manufacturer	Focal-JMlab, France

Frequently Asked Questions - POLYGLASS ENCLOSURES FOCAL

What is the recommended amplifier power for this subwoofer?

It is recommended to use an amplifier whose power is matched to the subwoofer's power handling. For the SB27 model, a nominal power of 250 W is advised, and for the SB33, 400 W. Avoid amplifier saturation to prevent damage to the speakers.

How to adjust the subwoofer's crossover frequency?

The ideal crossover frequency is generally between 60 Hz and 100 Hz. Precise adjustment can be done by ear or using a measurement tool. Adjust it according to your preferences and the rest of your audio system.

What warranty does Focal offer for this product?

In France, the warranty is 2 years from the date of purchase. To claim it, return the warranty card duly completed within 10 days of purchase. Outside France, warranty conditions are defined by the local distributor.

How to properly install the subwoofer in my vehicle?

Use the provided mounting kit: place the subwoofer in the trunk, attach the template sheet, drill at the indicated locations, install the brackets and straps, then tighten securely. Ensure the enclosure is well secured and does not interfere with the speaker's operation.

What type of cable is recommended for connection?

An oxygen-free copper (OFC) cable with a minimum cross-section of 2.5 mm² is recommended, especially if the distance between the amplifier and subwoofer is long. Focal FC 300 and FC 500 cables are advised.

How to connect the subwoofer terminals?

Strictly observe polarities: the terminal marked with a red dot is positive and the one marked with a black dot is negative. Reversing them may damage the installation.

What models are available in the Polyglass Enclosures range?

Two models are available: the SB27 V1 (max power 500 W) and the SB33 V1 (max power 800 W). They differ in size and performance.

What is the sensitivity of this subwoofer?

The sensitivity is 90 dB for the SB27 and 92 dB for the SB33 (measured at 2.83 V/1 m). This means they produce high sound levels with moderate power.

Can I install this subwoofer in any vehicle?

Yes, it can be installed in most vehicles, preferably in the trunk behind the rear seats. Ensure there is enough space and that the mounting is secure to avoid movement.

How to maintain and clean my subwoofer?

Clean it with a dry cloth to remove dust. Avoid moisture and chemicals. Regularly check connections and fastenings.

USER MANUAL POLYGLASS ENCLOSURES FOCAL

Polyglass Enclosures Manual

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)

Characteristics

Polyglass subwoofer:

Each subwoofer enclosure contains a Polyglass subwoofer driver. Such drivers utilise advanced materials and benefit from optimised magnetic circuits, built onto highly rigid alloy chassis.

High performance for a comparatively small volume:

High power handling characteristics (500 to 800 Watts max.), and a sensitivity optimised to deliver solid bass, all squeezed into a comparatively small volume / per high performance ratio.

Bass-reflex enclosure with internal damping material:

Low frequencies remain controlled and linear. This is chiefly due to optimised volume / driver parameters, and a solid box construction.

Connections

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

THE FOCAL GUARantee ONLY APPLIES IF PAGE 11 IS RETURNED TO US WITHIN 10 DAYS OF PURCHASE.

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Polyglass Enclosures Manual

Polyglass Enclosures Manual

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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 subwoofer. 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 100Hz . Optimum adjustment can only be achieved after listening and/or measuring.

Recommended power

Focal Audiomobile subwoofoers 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.

Warning!

The high output and power handling of Focal Audiomobile subwoofer 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.)
6 - Drill eight holes of 2mm for the 4× 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)

Polyglass Enclosures Manual

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 diagram, 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)
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

	SB 27 V1	SB 33 V1
Maximum power handling	500W	800W
Nominal power handling	250W	400W
Sensitivity (2.83 V / 1 m)	90dB	92dB
Frequency response	36Hz - 500Hz	38Hz - 500Hz

Guarantee

All Focal loudspeakers are covered by 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 to that granted by the legal guarantee in force in the country where the original purchase invoice was issued.

In addition to Car hi-fi systems, Focal offers personalized solutions for the equipment of your house. Enjoy at home the hi-fi and home cinema sensations provided by the Focal sound. Four product lines by the French leading loudspeaker manufacturer, are at your disposal to share with you our passion : the Spirit of Sound / www.focal-fr.com

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Notice Caissons Polyglass

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 - BP 374 - 108, rue de l'Avenir - 42353 La Talaudiere cedex - FRANCE

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