background image

G-Series User Manual v1.0 

G212B Subwoofer 
 
 
 
 
 
 
 
 
 
 
 
The G212B is a compact, powerful subwoofer system designed to extend the low frequency performance of G6, G8 and 
G12-based systems.  Through the use of a quasi-bandpass design, the enclosure size is kept to a minimum to allow ease of 
use in installations where space is a premium.   
 
It features a pair of high power 12” LF drive units, each in their own sealed chamber.  Both drive units then fire through a 
single exit.  For ease of use in mobile applications, an internal passive crossover is fitted to allow a single amplifier channel to 
drive both the G212B and a suitable mid/high enclosure.  Alternatively, using the switch on the rear of the enclosure the 
G212B can be changed from passive to active mode, where an active crossover can be used instead for more demanding 
applications. 
 
For ease of transportation in portable applications, the G212B is supplied and recessed handles can be fitted with four heavy 
duty castors.  A 35mm polemount is provided in the top of the enclosure for supporting G8 or G12 loudspeaker enclosures. 

Summary of Contents for G12

Page 1: ...obal 9 G Series PA Installation Loudspeakers User Manual v1 0 G6 fullrange enclosure G8 fullrange enclosure G12 fullrange enclosure G15 fullrange enclosure G212B subwoofer G218B subwoofer www global 9 com Copyright Global 9 Ltd 2006 ...

Page 2: ...loudspeaker 5 G15 passive two way fullrange loudspeaker 5 G212B active passive subwoofer 6 G218B subwoofer 7 System Set up Safety Considerations 8 Cabling Amplifier selection 9 Mounting Rigging Options Rigging Hardware Accessories 10 Permanent Installations 10 Maintenance G6 Drive Unit Service 11 G8 Drive Unit Service 11 G12 Drive Unit Service 12 G15 Drive Unit Service 12 G212B Drive Unit Service ...

Page 3: ...ting your local Global 9 dealer or email info global 9 com for further assistance Unpacking Every G Series product is built to the highest standard and thoroughly tested before it leaves the factory After unpacking your loudspeaker please inspect it carefully for any signs of transit damage If such damage is found please notify the carrier at once to instigate a claim It is suggested that you reta...

Page 4: ...ed in a wide variety of applications from compact floor monitoring to multi zoning in permanent installations G8 Loudspeaker The G8 is a compact fullrange loudspeaker Contained within the sturdy Birch plywood enclosure is a powerful 8 LF driver and a 1 HF compression driver on a rotatable 70 x 50 horn As with all G Series fullrange enclosures a G Phase passive crossover network maintains flat freq...

Page 5: ... a wide variety of possible applications G15 Loudspeaker The G15 is a the largest fullrange loudspeaker in the G Series It is intended for large scale live sound reinforcement high power stage monitoring or larger installations The sturdy Birch plywood enclosure houses a neodymium 15 LF driver with a 2 exit HF compression driver on a 60 H x 40 V horn Controlled dispersion throughout the operating ...

Page 6: ...e through a single exit For ease of use in mobile applications an internal passive crossover is fitted to allow a single amplifier channel to drive both the G212B and a suitable mid high enclosure Alternatively using the switch on the rear of the enclosure the G212B can be changed from passive to active mode where an active crossover can be used instead for more demanding applications For ease of ...

Page 7: ... the enclosure size is kept to a minimum whilst still producing the required low frequency performance It features a pair of high power 18 LF drive units each in their own vented chamber Both drive units then fire through a single exit An active crossover is required for the G218B to function correctly For ease of transportation in portable applications the G212B is supplied and recessed handles a...

Page 8: ... the speaker being pulled over Loose cables should be covered or taped down wherever possible to reduce trip hazards If stands are being used outdoors it may be necessary to add ballast to the base of the stand to prevent it toppling over When using poles on top of subwoofer systems please observe similar precautions Ground Stacking Ensure that the floor or stage surface can withstand the weight o...

Page 9: ... can cause serious damage to your loudspeakers If in doubt please contact your dealer who will be happy to assist you in correct amplifier choice and setup Cabling All G Series products are supplied with Neutrik SpeakonTM NL4 connectors wired pin 1 1 It is recommended that the resistance of your cable is less than one tenth of the nominal system impedance Given below are the recommended maximum ca...

Page 10: ...nder no circumstances should the mounting points of one enclosure be used to suspend another enclosure below it Global 9 are in no way responsible for the failure of incorrectly rigged systems This information relates specifically to the rigging techniques for the G Series fullrange enclosures only If you are in any doubt about safe practices for rigging loudspeakers please contact your local Glob...

Page 11: ...llen key and using a flat blade screwdriver carefully ease the grille out of location Take care not to damage the LF driver 2 Using a 4mm Allen key remove the four M5 socket head bolts holding the HF waveguide in place Lift the HF assembly out of the enclosure and carefully disconnect the cables observing correct polarity for future reference The drive unit can be removed using an 8mm spanner to r...

Page 12: ...terminal black to negative and reposition the driver Reinstate the eight bolts and retighten 4 Replace the grille be easing into place and reinstating the six countersunk bolts G15 High Frequency Drive Unit 1 Remove the eight countersunk bolts with an Allen key and using a flat blade screwdriver carefully ease the grille out of location Take care not to damage the LF driver 2 Using a 4mm Allen key...

Page 13: ...emove the six countersunk bolts securing the grille in place Using a flat blade screwdriver carefully ease the grille out of its location 2 Using an Allen key undo the eight socket head bolts holding the lower drive unit in place Remove these bolts and ensure that you have both shake proof and flat washers 3 Lift the drive unit out of the mounting hole ensuring that you do not hit the drive unit a...

Page 14: ...s been removed altered or defaced Returning your Global 9 loudspeaker Should your G Series loudspeaker develop a fault please return it freight prepaid in its original packaging along with proof of purchase to your local dealer including a description of the suspected fault Serial numbers must be quoted in all correspondence relating to the claim Global 9 or its representatives are in no way liabl...

Reviews: