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RETURNED TO US WITHIN 10 DAYS OF PURCHASE
Due to constant technological advances, Focal reserves its right to modify specifications without notice. Images may not conform exactly to specific product.
Focal® is a trademark of Focal-JMlab® - BP 374 - 108, rue de l'Avenir - 42353 La Talaudière
cedex - France - Tel. (+33) 04 77 43 57 00 - Fax (+33) 04 77 43 57 04 - www.focal-fr.com
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
Cables
For optimum performance the use of OFC cable (Oxygen Free Cable), to a sufficient thickness
(2.5mm²) is highly recommen e . This is particularly important in the case of long cable
lengths being use in the installation. We recommen the use of Focal cables FC500 or
FC700. Check with your local Focal ealer for further a vice.
Connecting up
Always check the polarity to the subwoofer, an that of the other speakers use 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
marke re spot = positive (+) an black spot = negative (-).
The 21 V2 uses a single coil; thus, there is one set of input terminals. For the 27 V2, 33 V2 an
40 V2, these all use a ouble coil system, thus have 2 x 2 input terminals incorporate .
These subwoofers can be mounte in the tra itional sense with the membrane on view
externally, or inverte mounting with the motor unit an its chrome back plate on isplay.
Inverte mounting helps increasing the volume for the given space available. When choosing
inverte mounting the phase must be inverte (thus swap the positive / to negative connections)
so that the polarity is correctly observe .
Multi-subwoofer installations
To obtain a more powerful acoustic presence, we recommen the intro uction of multiple
subwoofers for your chosen installation. Using multiple subwoofers, various series or parallel
or combinations of both can be use , but always check the specifications of the power source
(amplifier) before attempting any installation. It is worth remembering if low impe ance of
2 or even 1 ohm is chosen an amplifier of high quality shoul always be use for such
installation.
POLYGLASS SUBWOOFERS MANUAL
User Manual
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