SUBWOOFERS POLYGLASS - Subwoofers FOCAL - Free user manual and instructions

USER MANUAL SUBWOOFERS POLYGLASS FOCAL

the Spirit of Sound mn ___________ Polyglass Subwoofers Manual We congratulate you on purchasing a Focal subwoofer, from the Polyglass range. This product has been designed using the very latest technologies available; to ensure the quality performance is to a very high standard. To gain the best results from your subwoofer, please ensure you follow these recommendations. If not followed correctly any fault observed, may not be covered by the guarantee. Warning! The improved power handling has allowed Focal subwoofers to play at very loud sound volumes. For this reason, we recommend caution be wisely applied, especially during long listening periods. Excessive volume levels of more than 110dB can cause permanent hearing damage. The Focal guarantee only applies if the enclosed guarantee card is returned to us within 10 days of purchase. Cables For optimum performance the use of OFC cable (Oxygen Free Cable), to a sufficient thickness (2.5mm°) is highly recommended. This is particularly important in the case of long cable lengths being used in the installation. We recommend the use of Focal cables FC500 or FC700. Check with your local Focal dealer for further advice.

the Spirit of Sound a Polyglass Subwoofers Manual Connecting up Always check the polarity to the subwoofer, and that of the other speakers used in your installation. The polarity is important to ensure the phase characteristics remain correct, otherwise a "loss" of performance can result. The spring action input terminals are clearly marked red spot = positive (+) and black spot = negative (-). These subwoofers can be mounted in the traditional sense with the membrane on view externally, or inverted mounting with the motor unit and its chrome back plate on display. Inverted mounting helps increasing the volume for the given space available. When choosing inverted mounting the phase must be inverted [thus swap the positive / to negative connections) so that the polarity is correcily observed. Multi-subwoofer installations To obtain a more powerful acoustic presence, we recommend the introduction of multiple subwoofers for your chosen installation. Using multiple subwoofers, various series or parallel or combinations of both can be used, but always check the specifications of the power source (amplifier) before attempting any installation. lis worth remembering if low impedance of 2 or even 1 ohm is chosen an amplifier of high quality should always be used for such installation. Connections in parallel Normally the terminal positive (+) on the subwoofer will be connected to the equally marked positive (+) on the amplifier, and the terminal negative (-) on the subwoofer to the equally marked negative (-) on the amplifier. Only on an inverted subwoofer installation is it normally necessary to invert the connections ( and (+). Calculation of the impedance is (Z), for the given impedance value nominal (R}, is 4 ohms. + 2 subwoofers : 1/Z = 1/R1 + 1/R2 1/Z = 1/4 + 1/4 z2=2Q + 3 subwoofers : 1/Z = 1/R1 + 1/R2 + 1/R3 =13830Q Connections in series Using multiples of subwoofers for such comprehensive installations, it is sometimes better to connect them together in a series circuit. Using a low impedance load to the amplifier effectively ensures it will work less hard. For connecting the subwoofers, they are effectively looped together in any series circuit. Thus the positive [+] of 1st subwoofer will be connected to the positive [+] of the amplifier. The negative (-) ofthe 1st subwoofer will be connected to the positive [+] ofthe 2nd subwoofer. Then depending on how many subwoofers are to be included this looping will continue, until the last (in this basic case the 2nd subwoofer), will have its negative (-) connected to the negative [-) of the amplifier. Calculation of the impedance is (Z), for the given impedance value nominal (R}, is 4 ohms. + 2 subwoofers : Z = RI + R2 Z=40+40 Z=8Q 17/10/06, 11:87:22

the Spirit of Sound @______ Polyglass Subwoofers Manual Connections series and parallel, combined Depending on your installation amplifier(s), subwoofer(s), various combinations of series and parallel circuits can be used. The real advantage of doing this is to have a system with available power, but at the same time to ensure he system impedance load is optimum for the amplifier(s) used. Connection diagrams Examples and configurations for various multiples of subwoofers: 2 subvoofrs 2 V2 in parle. Z = 202 8 subuootrs 21 V2 in parle. 2 = 13202 2 subwoalr in sets. 2 = RQ 4 subuootr in sanes/ parle. 2 = 402 Adjustment of low cut off frequency The cut off frequency of a subwoofer is normally in the region of 60 to 100Hz. This is always dependent on the particular installation and listening position. À frequency of 80Hz is a good compromise for effective bass compared to listening quality. 17/10/06, 11:87:22

the Spirit of Sound a Polyglass Subwoofers Manual Enclosures Focal offers 4 ready-to-use oplimized enclosures. If you decide to ‘brew your own, it is safest to go for a bass-reflex type. This classic simple alignment usually give the best and most consistent results. See below regarding our proposals for the various volumes available per subwoofer. Vented boxes À bass-reflex system is more efficient than the sealed box since some of the energy from the rear of the cone is converted via the reflex port to add in phase with the main output. There is also a reduction of cone travel at the tuning frequency, so this system can also give higher power handling. However, at very low frequencies bass rolls off faster (24dB/octave). In simple terms, bass is louder, but not quite as deep. You can make a vent port from a piece of plastic pipe, or there are many profiled vent custom designed for loudspeakers that minimize turbulence (prevents what's commonly referred to as chuffing). Building an enclosure The construction should always remain strong and rigid, to eliminate any unwanted resonances. À good material such as MDF (Medium Density Fibreboard) will effectively ensure this is possible. Choosing the correct thickness of MDF compared to the surface area decided, is also critical to ensure the enclosure does not vibrate. For this reason the general thickness recommended is 19mm MDF Any loose components such as the internal connections and cables should always be fixed securely inside. Damping material (foam etc) covering all the internal walls of the enclosure, will further ensure it is free from unwanted resonances. It is imperative that your custom designed subwoofer enclosure remains securely mounted at all times to the vehicle. Calculating the internal volume Imtemal] 151 | 201 | 301 | 401 | 501 | 601 volume! [0.53eu.#. [0.71eu.#. |1.06eu.fr.|1.41eu.f. |1.77eu:f. |2.12eu.# a Tr me ane Dauer Jane 280 | 300 | 370 | 370 | 450 | 450 : me fans oague Jane Jane june 280 | 300 | 370 | 370 | 440 | 440 a Lane Does Jane ou Dire [oo 360 | 410 | 380 | 40 | 440 | 530 sl D ve Done Done [one fo [row 180 | 190 | 237 | 237 | 260 | 260 PA pragefegure fre vents | 7x25 | 7x25 | 7x25 av EST EU Intel volume calulton: Vo = 8 x x {D444-D)/2} vents? 7x28 | 7x23

the Spirit of Sound a Polyglass Subwoofers Manual Recommended power ratings Polyglass subwoofers are already highly efficient, with improved sensitivity. Therefore, their use with amplifiers will produce comfortable listening pleasure. However used in a more high-end system, with more powerful amplification, the audio quality will be greatly improved. It is very important to check that rated power ofthe amplifier is suitable to the subwoofers. Otherwise they may distort, or possible damage could oceur. Always consult the owners manual ofthe principal source (head unit/amplifier), to ensure he power rating is compatible. À safe guide is to ensure the maximum power of the amplifier is not greater than the nominal power of the speakers. 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. Technical characteristics 27 VI 33 V1 40 VI Cone 20.5em 26cm 33,5em Sd 330.06cm 530.93em° 881.41em° Xmax émm 7.5mm 7.5mm Fs 39.01Hz 25.25Hz 26.84Hz Q@es 0.510 0.360 0.510 Qms 3.470 3.440 4.620 as 0.445 0.326 0.459 Vas 21.43 liters 91.79 liters 165.66 liters Res 19.73 Ohms 31.92 Ohms 29.89 Ohms Mms 118.879 171.369 231.609 BI 12.87N/A 15.88N/A 15.90N/A le 23.20mH 58.48mH 38.37mH Re 2.9 Ohms 3.34 Ohms 3.3 Ohms Parameters 27 VI 33 V1 40 VI Impedance 4 ohms 4 ohms 4 ohms Max. Power 500W 800W 800W Nom. Power 250W 400W 400W Sensitivity (2.83V/1m) 9048 9248 93,5dB Fitting diameter __9-3/16"-(233mm) 11-5/16"-(287mm) _13-5/16"-(351mm) Fiting depth _5-1/8"- (130mm) 6-1/4" - (158mm) 7-5/16" - (185mm) 17/10/06, 11:87:22

the Spirit of Sound a Polyglass Subwoofers Manual Frequency response: 27 V1 Vented enclosure 15 lite (0.53 cu.) F-3 = 46H / Fast and tight bass 20 tes (2.71 cf) F-3 = 40H / Punchy and dynamic bass ce 30 tes (1.06 cu.) F-3 = 33H / Deep and articulate bass 33 V1 Vented enclosure 30 tes (1.4 cu.) F-3 = 40H / Punchy and dynamic bass one 40 lies (1.77 cu.) F-3 = 36H / Deep and articulate bass 40 V1 Vented enclosure 50 lies (2.12 0.) F-3 = 43h / Punchy and dynamic bass ce 0 ter (2.83 cu.) F-3 = 40H / Deep and articulate bass notice subvt_ 6

FOEAL the Spirit of Sound International Guarantee The Focal nly applies if this page is returned to us within 10 days of purchase, to the following addres: Focal-JMlab - BP 374 - 108, rue de l'Avenir - 42353 La Talaudière cedex - FRANCE Model Serial number: Name of dealer: Town: Date of purchase: Purchase price: Your name: Age Occupation: Your complete address: Your email address: Details of your installation (brand, model): % = Cassette » CD: = Navigation: » Multimedia center: DVD » Amplifier = CD-change: » Other elements Your decision for purchasing this Focal model was made according to: [1 Dealer's advice [1 Friends advice O1 Visit to an exhibition, show O1 Press article Oo [1 Already own Focal products D Reliability / Quality [Documentation [1 Reputation [1 French produce [1 Guarantee C1 Quality / Price ratio [1 Design / Finishes O Other X [J Sound In case of purchase of new equipment, what were your former speakers ? Explain in a few words why you choose Focal Further comments: The information given on this page will remain confidential