background image

 

Community VLF Series – Operation Manual - Page 4 

VLF SERIES OPERATION MANUAL 

 

INTRODUCTION 

 

Thank you for selecting Community’s Versatile Low Frequency (VLF) Series.  VLF is a series of powerful and 

innovative new low frequency subwoofers that feature a compact, low-profile design ideal for theaters, 
restaurants, auditoria, houses of worship, schools and other venues, fitting into areas where larger 

subwoofers are impractical.  VLF Series loudspeakers are designed for demanding day-to-day use in a wide 

range of fixed and portable installations.  Their high quality driver components are housed in rugged, 

acoustically inert enclosures equipped with rigging fittings.   

 

This manual covers the 

VLF208 

compact dual 8-inch micro subwoofer, the 

VLF212I 

compact dual 12-inch 

subwoofer for permanent installation, and the 

VLF212P

 “portable” version of the VLF212I with built-in 

handles and pole mount socket. 

 

VLF subwoofers offer numerous features and advances in technology. Some of these include: 

 

 

Low profile design, small footprint 

 

 

Designed to work as a traditional subwoofer or in steered bass arrays 

 

 

DYNA-TECH

TM

 protection circuitry reduces the likelihood of driver damage under abusive conditions. 

 

 

Load-rated threaded rigging fittings for safe & easy rigging. 

 

 

NL4-compatible locking connector with terminal strip for easy connectivity. 

 

 

Suitable for in-wall, under-seating, under-stage and other “hidden” LF applications 

 

 

Optional factory designed mounting brackets available from stock.  

 

 

Available in black or white finish at no additional cost. 

 

IMPORTANT SAFETY INFORMATION 

 

Always follow these basic safety precautions when using or installing VLF loudspeakers and accessories: 

 

1.

 

Read these instructions. 

2.

 

Keep these instructions. 

3.

 

Heed all warnings. 

4.

 

Follow all instructions, particularly those pertaining to rigging, mounting, hanging and electrical 

connections. 

5.

 

Only use accessories that are specified and approved by the manufacturer.  

 

The terms 

CAUTION,

 

WARNING,

 and 

DANGER

 are used throughout this manual to alert the reader to 

important safety considerations.  If you have any questions or do not understand the meaning of these 

terms, do not proceed with installation.  Contact your local dealer, distributor, or call Community directly for 

assistance.  These terms are defined below: 

 

CAUTION: 

describes

 

an operating condition or user action that may expose the equipment 

or user to potential damage or danger.  

 

WARNING: 

describes

 

an operating condition or user action that will likely cause damage to 

the equipment or injury to the user or to others in the vicinity.  

 

DANGER: 

describes

 

an operating condition or user action that will immediately damage the 

equipment and/or be extremely dangerous or life threatening to the user or to others in the 
vicinity. 

 

The loudspeakers described in this manual are designed to be ‘flown’ or suspended for maximum acoustical 

performance using a variety of rigging hardware, means, and methods in some applications.  It is essential 

that all installation work involving the suspension of these loudspeaker products be performed by 

competent, knowledgeable persons who understand safe rigging practices.  Severe injury and/or loss of life 
may occur if these products are improperly installed.  Please read the section on rigging for additional 

information. 

Summary of Contents for VLF208B

Page 1: ...VLF Series Versatile Low Frequency Systems Models VLF208B VLF208W VLF212BI VLF212WI VLF212BP Operation Manual...

Page 2: ...cts bearing the CE label comply with the following harmonized or national standards DIN EN 55013 08 1991 DIN EN 55020 05 1995 DIN EN 55082 1 03 1993 The authorized declaration and compatibility certif...

Page 3: ...VLF SAB STEERED ARRAY BRACKET 18 DIMENSIONAL DRAWINGS 19 WARRANTY INFORMATION AND SERVICE 22 TABLE OF FIGURES No Figure Page 1 Physical Features of a VLF208 6 2 Physical Features of a VLF212I 6 3 Phys...

Page 4: ...NT SAFETY INFORMATION Always follow these basic safety precautions when using or installing VLF loudspeakers and accessories 1 Read these instructions 2 Keep these instructions 3 Heed all warnings 4 F...

Page 5: ...in any way they can but it is the responsibility of the party receiving the shipment to file the damage claim It s always a good idea to retain the carton and packing materials indefinitely if possib...

Page 6: ...al Page 6 Figure 1 Physical Features of a VLF208 Figure 2 Physical Features of a VLF212I Figure 3 Physical Features of a VLF212P 8 MOUNTING POINTS 4 ON EACH SIDE RECESSED FOOT MOUNTING LOCATIONS 4 FOR...

Page 7: ...4 Ohms 4 Ohms Input Connection 1 NL4 compatible locking connector 1 2 conductor barrier strip 1 NL4 compatible locking connector 1 2 conductor barrier strip 2 NL4 compatible locking connector 2 jack...

Page 8: ...or the loudspeaker components Recommended DSP Settings for the VLF208 High Pass Filter Linkwitz 48 dB Oct 55 Hz Low Pass Filter Butterworth 48 dB Oct 200 Hz Varies based on the full range system used...

Page 9: ...Q4 PEQ5 Frequency 38 Hz 45 Hz 62 Hz 110 Hz 200 Hz Gain 4 5 dB 2 5 dB 3 dB 1 dB 7 dB Slope Q 0 20 Oct 0 19 Oct 0 5 Oct 1 Oct 0 33 Oct Figure 7 VLF212 Frequency Response Unprocessed Raw Data 70 80 90 10...

Page 10: ...es to this type of multi stage protection circuitry The trip point is pre set to engage at exactly the same time on all loudspeakers that are powered from the same amplifier The initial stages of DYNA...

Page 11: ...rom attempting to reproduce frequencies below the loudspeaker s intended operating range The table below shows the recommended filter settings Model High Pass Filter VLF208 Subwoofer 55 Hz 24 dB octav...

Page 12: ...NL4 Pin 1 or the terminal screw labeled connect to the negative black output of the amplifier Note that the NL 4 and the terminal strip are wired in parallel and that Pins 2 and 2 on the NL4 connecto...

Page 13: ...ut it also presents a higher impedance load to the amplifier This can become quite important particularly if a pair of full range loudspeakers and a subwoofer are being powered from a single amplifier...

Page 14: ...l be different than if it is flown 15 or 20 feet over the subwoofer We encourage you to experiment to obtain the quality of sound that is to your liking IMPORTANT The corner frequency of the built in...

Page 15: ...pins are connected to the NL4 output connector to the output jack and to the drivers in the subwoofer In the Hi Pass Mode the pin designation is as follows NL4 Pin 1 and the tip of the jack connect to...

Page 16: ...r AC Mains plug s Many modern high power amplifiers can deliver enough voltage and current to cause a harmful or lethal electric shock Shocks from very low frequencies such as kick drums can cause the...

Page 17: ...munity assumes no further or extended responsibility or liability in any way or by any means whatsoever It is the responsibility of the installer to insure that safe installation practices are followe...

Page 18: ...ARNING VLF rigging fittings are rated at a Working Load Limit of 100 lbs 45 4kg with a 10 1 safety margin No single rigging fitting should ever be subjected to a load that is greater than 100 lbs Fail...

Page 19: ...55 13 000 330 2 TOP VIEW FRONT VIEW RIGHT SIDE VIEW LEFT SIDE VIEW SPEAKER ACCESS PANEL RIGHT SIDE LEFT SIDE BOTTOM PORT BOTTOM VIEW REAR VIEW RIGHT SIDE BOTTOM TOP FRONT FRONT 4 M10 HANG POINTS 9 69...

Page 20: ...re 19 VLF212I Dimensions FRONT VIEW SIDE VIEW BOTTOM VIEW TOP VIEW 20 000 508 21 750 552 45 20 000 508 REAR VIEW SPEAKER ACCESS PANEL FACE FACE 10 299 261 6 8 000 203 2 4 000 101 6 2 209 56 1 2 250 57...

Page 21: ...gure 20 VLF212P Dimensions FRONT VIEW SIDES BOTTOM VIEW TOP VIEW 20 000 508 21 750 552 45 20 000 508 BACK VIEW SPEAKER ACCESS PANEL FACE FACE 2 209 56 1 2 250 57 15 2 209 56 1 2 250 57 15 FEET 4 M10 H...

Page 22: ...products purchased in the United States return the product for inspection to the address below freight prepaid in the original packaging If the original packaging is not available call or write Commun...

Page 23: ...tice and with no obligation to make corresponding changes in products previously manufactured While this warranty gives specific legal rights there may also be other rights that vary from state to sta...

Page 24: ...Community Professional Loudspeakers 333 East Fifth Street Chester PA 19013 4511 USA Tel 1 610 876 3400 Fax 1 610 874 0190 www communitypro com 2008 All Rights Reserved 20080912...

Reviews: