NHT Speaker S 00 Powered User Manual

S-00  
Powered  
Subwoofer  
Owner’s Manual  
Serial Number:  
Copyright 2001 NHTPro, a Recoton CorporationBrand  
 
INTRODUCTION:  
Thank you for your purchase, and congratulations on your selection of the NHTPro S-00 powered subwoofer. The S-  
00 will add dynamic bass response to any pair of powered mini-monitors, or can be used to reproduce the .1 LFE  
channel forsurround mixing. While the S-00 was designed to mate seamlessly with the NHTProM-00 monitor system,  
you'll soon come to appreciate the extraordinary performance advantages this subwoofer will bring to your system  
regardlessoftheapplication.  
Investing some time learning about the S-00'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  
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 [email protected].  
2
4
1
SUB LEVEL  
LP FREQ.  
-20dB  
0dB  
70Hz  
110Hz  
+4 dB  
120Hz  
AUTO  
5
3
6
-10 dB  
95Hz  
ON  
SENS. HP FREQ. POWER  
INPUT SECCTION  
R
L
PHONO  
L
R
XLR  
G
+
-
SUB  
BYPASS  
+
-
R
OUTPUT  
L
G
SWITCH  
TO SATELLITE  
TRS  
7
ON  
INPUT  
115  
P
O
W
E
8
9
S-00 POWERED SUBWOOFER  
SERIAL NO:  
NHTPro, BENICIA, CA  
R
VOLTAGE  
OFF  
CAUTION  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
CAUTION:  
TO REDUCE THE RISK OF FIRE  
REPLACE ONLY WITH SAME  
TYPE AND RATING OF FUSE.  
WARNING: SHOCK HAZARD - DO NOT OPEN.  
AVIS: RISQUE DU CHOC ELECTRONIQUE -  
NE PAS OUVRIR.  
ATTENTION:  
UTILISER UN FUSIBLE DE  
RECHANGE DE MEME TYPE.  
T2.5A 250V FOR 115V.  
T1.5A 250V FOR 230V.  
50/60Hz 250W  
FUSE TYPE:  
NHT is a registered tradmark of the Recoton Corporation.  
S-00 Rear Control Panel  
 
USER CONTROLS:  
Sub Level Control:  
1
The subwoofer level control matches the S-00 output level to the satellite monitors. This control differs from  
most as it doesn't turn the woofer all the way off, but offers a 20dB range of adjustment. Fully clockwise, output is  
maximum (0 dB). In the counter clockwise position, the sub output is attenuated by 20dB.  
Low Pass (LP) Frequency Control:  
This control allows fine adjustment of the subwoofer crossover point to match the point where the satellites roll  
off at the low end of their response. This detented low pass control has a range of 70Hz -110Hz.  
2
3
Input Sensitivity Control:  
This control affects both the subwoofer input and the high pass circuit. There are two settings; +4dB and -10dB.  
+4dB is used with professional gear such as mixers, while the -10dB position is for consumer grade products such  
as CD players and sound cards. Check the output specifications of the source equipment you are connecting to  
the subwoofer, to find the best setting for each application.  
High Pass (HP) Frequency Switch:  
4
5
6
The High Pass Frequency switch controls the lowest point in the frequency range passed on to the satellite  
monitors. There are two settings: 95Hz and 120Hz. Selecting the proper switch position (see the Initial Control  
Settings section on Pg. 6) will help blend the overall system response and increase power handling. Setting the  
Subwoofer Bypass switch to BYPASS eliminates this circuit and sends all frequencies in the signal to the satellite  
monitors.  
Auto Power Switch:  
When turned to the “AUTO”position, this switch places the S-00 in an energy-saving standby mode after 10  
minutes without an incoming signal. When in standby mode, the LED on the front of the S-00 changes from  
“GREEN” to “RED” The S-00 instantly resumes operation when an input signal appears, and the LED changes  
back to “GREEN.” Setting this switch to the “ON” position keeps the S-00 powered up at all times, and defeats  
the standby mode.  
Input Section:  
The S-00 offers three stereo input options: two types of balanced inputs (TRS and XLR) and unbalanced RCA.  
The two balanced inputs are wired in parallel. Note: Standard 1/4” connectors maybe used in place of the TRS  
type if the source equipment employs unbalanced outputs, but this method may induce unwanted noise.  
Output Section:  
7
8
The output connectors to the satellite monitors are balanced, TRS type. Two 12' cables are included to connect  
the S-00 left and right outputs to the satellite monitors.  
Subwoofer Bypass:  
This feature, helpful when monitoring, allows you to turn the S-00 “ON” or ”OFF” on the fly. Any standard  
“latching” or two-position foot switch that has a 1/4”plug will control this function. A press of the foot switch  
will place the S-00 and its High Pass filter into BYPASS mode and remove them from the signal chain (changing  
the indicator LED to RED). A second press of the foot switch, causes the S-00 to resume operation, and the  
indicator LED changes back to GREEN.  
Power Section:  
9
The main power ON and OFF switch is located above the power cord receptacle. Located next to the power  
switch is a voltage selector, preset at the factory for the destination country. A power cord appropriate for that  
voltage is included with the S-00.  
WARNING: As a precaution, check the setting for appropriate voltage prior to plugging the S-00 into an  
AC outlet.  
 
CONNECTING THE S-00 SUBWOOFER:  
Using the S-00 as a .1 or LFE stand-alone device:  
Connect either an RCA, XLR or TRS from your designated LFE channel or buss output assignment to either the left or  
right input on the S-00 “INPUT SECTION”. If more subwoofer sensitivity is required, use a “Y” adaptor and connect to  
both left and right inputs. Be sure to utilize surround test tone signals to properly balance the woofer level with the other  
monitor channels. Please read through the Subwoofer Placement and User Controls sections before you begin.  
Using the S-00 to augment the frequency response of mini-monitors:  
Connect the left and right outputs from your mixer or source unit to either the XLR, TRS or RCA jacks on the “INPUT  
SECTION” of the S-00. Now connect the supplied left and right TRS cables from the “TO SATELLITE” output jacks  
on the S-00 to your satellite monitors' input jacks. You may also want to connect a foot switch (or any standard 1/4”, 2-  
position switch) into the BYPASS input on the rear of the S-00. Using this feature is not necessary to the basic operation  
of the S-00.  
Warning: The S-00 was designed to be connected to powered satellites only, do not attempt to connect  
passive satellite monitors to the S-00.  
Tech Tip: The XLR and TRS input jacks are wired in parallel. This allows you to patch the unused balanced  
input into another device like a DAT machine or additional monitor system. You can also daisy chain multiple  
subwoofer/satellite systems for fixed installations.  
INITIAL CONTROL SETTINGS:  
Input Sensitivity Selection:  
This switch affects the input sensitivity of all three sets (XLR, TRS and RCA) of input jacks. When satellites are  
connected to the S-00, the subwoofer takes over as the master sensitivity control for the system.  
IMPORTANT: Set the satellite speakers you're using to the +4 setting. Set the sensitivity on the S-00 to the  
appropriate setting for your source equipment.  
HP Frequency Selection:  
If you are using Vergence M-00 monitors as satellites, set the HP FREQ to the 120Hz setting. If you use a different brand  
of powered satellites try setting the switch to 120 Hz when the satellite woofer size is 5” or  
smaller and 95Hz if larger than 5”.  
Subwoofer Level Setting:  
The level you select will depend largely on placement. We suggest you start with this control in the 12 o'clock position.  
Move the control in a clockwise direction to increase bass output and counterclockwise to decrease it. Adjust the level so  
that the S-00 seamlessly integrates with the satellites, ie. you can tell it's operating but can't “hear” it as a separate entity.  
Low Pass Frequency Setting:  
Getting this setting right may take a little time. Using a variety of demo material you are very familiar with, start with the  
control in the 12 o'clock position. If the bass sounds too “punchy”, turn the control counter clockwise towards 70Hz. If  
the bass sounds thin, turn the control clockwise towards 110Hz.  
Auto Power:  
Use of this control is entirely optional. NOTE: The Satellite Output is also muted when the subwoofer goes into the  
standby mode.  
 
SUBWOOFER PLACEMENT:  
Where you locate the S-00 subwoofer will have a profound effect on the system's performance.  
Unfortunately, there are no hard and fast rules to find the best location. If you have some flexibility, we  
encourage you to experiment. The following guidelines should help you in your placement decisions:  
Placement near walls and corners will reinforce low frequencies; conversely, placement out into open space will add  
definition, but will reduce bass weight and extension.  
Ideally, the subwoofer should be adjusted so that you hear the additional bass extension, but cannot localize the  
subwoofer itself.  
Listen as you go, using a wide variety of program material. Jazz recordings with acoustic bass and piano are  
particularly helpful in determining location, sub level and crossover settings. Transparency and integration are the  
goals.  
The S-00 subwoofer amplifier has a number of controls which can help while determining optimal placement; try  
them all!  
TECH TIP: The bypass foot switch is very helpful when setting up and tuning the S-00 to your room. When  
switching the woofer in and out, no tonal difference should be noticeable, just bass or no bass.  
SYSTEM OPERATION:  
The S-00 used in conjunction with good satellite monitors, like the M-00's, can play very loud with low distortion.  
Although designed to handle a wide range of listening levels, every speaker has its limits. Harsh breakup is an  
indication your monitors or the subwoofer have exceeded their output limits. Excessive boosting of bass, treble or  
equalizer controls can worsen the problem. If you hear continuous distortion or feel heat emanating from the  
drivers, reduce the level immediately. Most speaker damage occurs from sustained high volume levels, not from  
transient sounds or brief musical peaks. Listening at high volume levels is potentially dangerous and can lead to  
permanent hearing loss, especially when listening in the near-field. Protect your ears and use common sense.  
SYSTEM MAINTENANCE:  
Your S-00 subwoofer needs no regular maintenance. The S-00 cabinet is finished with a durable, powder-coat paint.  
Light dusting is usually sufficient, although the cabinet can be cleaned with a non-abrasive, water based, cleaner. The  
grillcoveringthewooferismountedinternallyandisnotuserserviceable.  
WARNING: To avoid risk of electrical shock, do not remove the amplifier from the rear of the cabinet.  
Refer all repairs to a qualified authorized service center. Always disconnect the S-00 from the AC power  
source prior to any maintenance.  
TECHNICAL SUPPORT:  
:
Tollfree:800-NHT-9993(648-9993). Fax:1-707-747-1252. Email:t[email protected].  
Postal Mail: NHTPro, 6400 Goodyear Rd., Benicia, CA 94510  
 
SYSTEM:  
Type: Integrated, self powered subwoofer  
Configuration: Acoustic Suspension  
Woofer: 8” high-excursion, treated paper  
FEATURES/CONTROLS:  
Input Connectors: XLR, TRS, RCA  
Output Connectors: TRS  
Switchable Input Sensivity: +4dB, -10dB  
Continuously Variable Gain: 0 ~ -20dB  
Continuously Variable Low Pass Frequency.  
Switchable High Pass Frequency.  
Subwoofer Bypass via outboard footswitch.  
SPECIFICATIONS:  
Amplifier Power: 125W RMS, 250W peak  
(500ms)  
Peak Acoustical Output: 108 dB SPL @ 60 Hz  
Crossover:  
Low Pass - 70Hz - 110Hz, 12dB/Oct.  
High Pass - 95Hz or 120Hz, 6dB/Oct.  
Response (+ 2dB): 40Hz - 115Hz  
-6dB LF Cutoff: 35Hz  
Dimensions: 13.25”H x 10.25” W x 13” D  
Weight: 30 lbs.  
Enclosure Material: 3/4” MDF  
Finish: Black Powder Coat  
 
NHTPro  
6400 Goodyear Rd.  
Benicia, CA 94510  
Phone (707) 748-5940 fax (707) 747-1252  
 

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