Focal Car Speaker 27 V1 User Manual

6
BombA 27 V1 User Manual  
Congratulations on choosing Focal automobile speakers.  
To gain the best results from your speakers, please ensure you follow these recommendations,  
and keek carefully this user manual so that you can consult it later. If not followed correctly any fault  
observed may not be covered by the guarantee.  
Precautions  
For the subwoofer to perform at its best, we recommend to use it in a location where temperature  
doesn’t go below 5°C.  
• The location must also be dry and offer adequate ventilation.  
• The supply voltage requirement is 12VDC (13.8VDC) with the negative connection grounded.  
Please make sure that the characteristics of your vehicle correspond with this requirement before  
connecting the equipment.  
• For safe driving, we recommend that you operate your sound equipment at a listening level that does  
not conceal traffic noise.  
Warning!  
The performance of the Focal BombA 27 V1 allows high sound pressure levels to be generated.  
We remind you that sustained listening beyond 110dB SPL can permanently and irreversibly damage  
your hearing. We recommend that you adjust the level of your equipment correspondingly.  
For safety reasons, it is essential that you securely fix the subwoofer enclosure in the boot (make sure  
you do not drill through the petrol tank if you fix it with screws).  
Mounting kit included:  
- 2 x nylon straps  
- 4 x metal roll bar  
- 8 x fixing screws  
- 1 x template  
The Focal guarantee only applies if page 11 is  
returned to us within 10 days of purchase.  
 
8
BombA 27 V1 User Manual  
Phase inverter  
It allows you to phase the subwoofer (generally advised) or unphase it.  
The right setting is determined by listening and finding the one (matching with the front system)  
that provides the most bass.  
Adjustable cut-off frequency  
An electronic crossover removes medium and high frequencies beyond a point set by the user. The ideal  
is to extend the bass frequencies in an even and continuous manner from where the front system rolls  
off. In general, a cut-off frequency located between 80 and 100Hz should be suitable for most systems.  
This setting becomes more critical when the BombA is used within a high-end hi-fi system.  
The idea cut-off frequency will only be found after extensive listening to a wide range of musical.  
Warning! Very few recordings possess real bass frequencies. Bass notes such as those found in Rock,  
Techno, Ragga music etc. are rarely located within the extreme bass area, but more likely in the high  
bass band.  
As a consequence, it is recommended to select a cut-off frequency between 100 and 120Hz for these  
styles of music. However, you may prefer a lower cut-off frequency for classical music.  
It is possible to set the cut-off frequency anywhere between 40 and 160Hz  
This adjustment should be made in reference to the listening position and with your preferred type of  
music.  
For a more precise adjustment, your retailer may use an analyzer (RTA).  
Dimensions :  
A = 12-3/16” - 310mm  
B = 14-5/8” - 371mm  
C = 6-11/16” - 170mm  
L = 18-1/3” - 466mm  
 
9
BombA 27 V1 User Manual  
Amplifier setting and connections  
SPL  
+ +  
Extreme Bass  
Quality …  
+
High level imputs  
for compatibility  
with all types of installation  
Low level inputs  
(4V compatible)  
3 bass-boost settings  
- Classical  
- Techno  
- Pop  
Adjustable level  
Adjustable cut-off  
40 - 160Hz  
at 18dB/oct  
Phase settings  
(o°/180°)  
Power  
Protection fuse  
Integrated Subsonic Filter 24dB/oct  
guide  
Issue  
Cause  
Solution  
Can’t switch on the  
BombA  
No +12V on the supply  
Ground not properly connected  
Fuse broken  
Check connections to battery  
Check connection  
Change fuse  
The BombA is on,  
but no signal  
No signal  
Check signal cable  
No remote  
Check power on the remote  
Turn up the volume on the source.  
Level control ineffective  
Output distorted  
Fuses blown  
Source level too high  
Gain of the amplifier too high  
Turn down the source level  
Turn down the gain of the amplifier  
Output levels too high  
Turn the volume down  
 
10  
BombA 27 V1 User Manual  
Tecnical specifications  
BombA 27 V1  
27cm (11")  
Subwoofer  
310mm (12-3/16")  
371mm (14-5/8")  
466mm (18-1/3")  
150 Wrms / 300W max.  
36Hz-160Hz  
Height  
Base width  
Lenght  
Built-in amplifier  
Frequency response  
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.  
®
Focal is a trademark of Focal-JMlab  
®
BP 374 - 108, rue de l'Avenir - 42353 La Talaudière cedex - France - www.focal-fr.com  
Tél. 00 33 4 77 43 57 00 - Fax 00 33 04 77 37 65 87  
Due to constant technological advances, Focal reserves its right to modify specifications without notice. Images may not conform exactly to specific product. ©Focal-JMlab  
 

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