Getting Started - NHT B-20 Owner's Manual

INTRODUCTION:
Thanks for your purchase, and congratulations on your selection of the B-20 active modular subwoofer system. The B-20
will add incredible dynamics and extended bass response to any pair of monitors, or to the
Although the B-20 was designed to mate specifically with the Vergence A-20 stereo monitors and C-20 center channel
monitor, its extensive control set makes it an ideal addition to near or mid- field monitor system you may already own.
time invested in learning about the B-20's features and capabilities will reward you with the best possible performance.
Now would also be an excellent time to fill out and send in your warranty registration card or, optionally, register your
purchase online at www.vergenceaudio.com under the Support section. This action will automatically extend both the parts
and labor warranty for an additional two years for a total of three years! If at any time, you require assistance, call our
customer service hotline at (800)-NHT-9993 (648-9993 or e-mail us at tech@nhtpro.com.

GETTING STARTED:

The B-20 is unique in that it combines a dedicated control amplifier with subwoofer cabinets, using controlled impedance
cables that actually form part of the crossover network. By designing the system as an integral package of control amp,
cables, and subwoofers, many of the advantages of self-powered subwoofers can be realized without the usual attendant
performance compromises.
WARNING:
The following are included in the Control Amplifier carton:
1 - Control Amplifier
1 - 6' IEC Power Cord
1 - Warranty Registration Card
Screws
C-20
Amplifier
Front Panel
Fig. 1: Rack Mounting Detail
INITIAL Installation:
AMP MOUNTING: The B-20 Control Amplifier may be used on a shelf, or mounted in a standard 19" equipment rack
using the screws and washers supplied. For rack mounting, remove and retain the four feet from the bottom of the amp chassis
using a #2 Philips screwdriver. Refer to figure 1 above. Two vertical rack spaces are required, but we recommend you leave
at least one additional open space above
high power amplifier. For table or shelf use, the four feet must remain attached to allow for air circulation.
SUBWOOFER FEET: For best performance, the subwoofers need stable footing. Install three speaker cones into the
threaded inserts in the bottom of each subwoofer, or, if the subwoofer is to be placed on a hardwood floor, apply rubber feet.
The cone points are sharp so please use caution. For now, position each B-20 subwoofers next to the left and right monitors.
For more detailed speaker placement tips, see page 7.
The B-20 subwoofers must only be used with the B-20 Control Amp, cables, and vice versa.
Insulating
Washers
Rack Rail
and below the B-20 Control Amplifier for improved cooling, as you would with any
LFE channel for surround mixing.
2 - 20' Monitor Output Cables
4 - 10-32 Rack Mounting Screws
8 - Plastic Insulating Washers
Fig. 2: Cone Feet Installation
Your