Cylinder Cabinet Design: The SVS PC-4000 powered subwoofer
features a cylinder cabinet design with three 3.5" high-flow ports for smooth, deep bass and high output efficiency. The
cylinder styled PC-4000 outperforms many larger ported "box-style" powered subs.
The SVS PC-4000 delivers unmatched bass performance per square inch of floor
space giving you the sheer power of a much larger ported subwoofer. Its cylinder
cabinet features MDF (Medium Density Fiberboard) construction wrapped with a
cloth grille and fitted with four elastomer feet to resist any unwanted distortion.
13.5" High Output Woofer: The down-firing 13.5" high output
woofer of the SVS PC-4000 powered subwoofer pumps out deep and powerful bass
with low distortion, for smooth and accurate performance on music and movies
soundtracks. The woofer features a lightweight and rigid composite cone with a
premium glass fiber dustcap to generate massive output with pinpoint accurate
frequency response. A dual ferrite magnet motor assembly weighing nearly 40lbs
generates immense magnetic force and excursion of the 13.5" driver to produce
massive low frequency output well below the limits of human hearing. An edge
wound 3" voice coil with an eight-layer aluminum flat wire minimizes distortion
and power compression while providing excellent heat dissipation and linearity
ensuring precise control. The proprietary injection molded gasket and long-throw
parabolic surround ensure longevity and allow extreme excursion and SPLs.
Sledge STA1200D Amplifier: Rated conservatively at 1200
watts RMS, and 4000 watts peak power, the PC-4000's Sledge STA-1200D amplifier
uses an efficient Class D design combined with fully discrete MOSFET output and
a sophisticated Analog Devices DSP engine. The result is a level of effortless
power and advanced processing not available from any other powered subwoofer
manufacturer. Efficiency of a Class D amplifier with the ability to move massive
amounts of current through the fully discrete MOSFETs enabling immense output
and precise control for outstanding real-world subwoofer performance at all
drive levels. The amplifier's advanced digital processor maintains pinpoint
accuracy and pristine sound quality through advanced in-room tuning, optimized
frequency response curves, powerful DSP controls and more.
Three 3.5" High-Flow Ports: The cabinet utilizes a bass
reflex (ported) design with three 3.5" high-flow ports with inner/outer port
flares for smooth bass and high output. Foam port plugs come standard with the
PC-4000 and allow for variable tuning. Each response curve for the three port
tuning modes; standard, extended and sealed, is fully configured to the
respective mode to achieve balanced and accurate low frequency response with all
- Standard Tune: All ports are open for the highest
- Extended Tune: One port is plugged for deeper
extension, but slightly less maximum output.
- Sealed Tune: All ports are plugged for best transient
Intuitive Control: The SVS PC-4000 powered subwoofer can be
controlled from the front-panel interface, the included IR remote, or via the
new SVS Mobile App for unprecedented flexibility when optimizing performance for
room layout, speakers, system set-up and more.
- Front-Panel Interface: The front-panel features an
intuitive user interface with simplified controls and display that can be
used to adjust the majority of the advanced subwoofer control settings. The
convenient front-panel display with Intelligent Feature Control (IFC)
features a bright blue dimmable/defeatable 8-digit LED backlight.
- Remote Control: The included IR remote can be used to
adjust nearly every one of the advanced subwoofer control settings with
two-way feedback on the front-panel display.
- SVS App: In addition to the IR remote & front-panel
control interface, SVS has developed the convenient SVS mobile app (for
Apple iOS 8.0+ and
Android OS 4.3+) that allows you to make adjustments for room layout,
personal preferences, movies vs. music, and more from your
Bluetooth-connected smartphone or tablet. It's the easiest and best way to
fine tune the subwoofer for perfect performance from the comfort of your
favorite seat. The SVS App lets you control the following DSP functions -
volume, parametric EQ, low pass filter, phase, polarity, room gain, port
tuning, custom presets and system setting - from your Bluetooth-connected
Apple iOS or Android OS device. Once installed, there's a helpful tutorial
that will guide you through each option and provide common settings to
simplify the process.
Note: The SVS App is the only way to access all of the
advanced control features available on the PC-4000 and it is the most
convenient option for controlling every feature.
Advanced Subwoofer Controls: The PC-4000 subwoofer provides
advanced DSP controls, settings, and adjustments.
- Volume Level: The Volume Level (-60 to 0dB) affects how
loud the subwoofer plays. It should be adjusted to match the output level of
your loudspeakers. Setting the level too high will cause the bass to seem
bloated and is the single most common cause of bad sounding subwoofers.
Setting it too low, will cause your movie or music soundtracks to sound
"thin" and less dynamic.
- Low Pass Crossover: This Low Pass Crossover affects the
upper frequency limit of the powered sub. The control range is 30-200Hz,
along with a "LFE" (disabled) setting. The slope of the low pass crossover
can be set 6, 12, 18, or 24dB/octave. For connection to a home theater
receiver, the low pass should be set to "LFE" (disabled). For stereo
receiver, it should be adjusted to blend with the natural roll-off frequency
of your loudspeakers.
- Phase Adjustment: The Phase Adjustment (0-180°)
solves sound wave cancellation issues at specific frequencies and
perfectly aligns the arrival of output from speakers and subwoofers to your
listening position. Normally set to 0° if the subwoofer is near the main
speakers. Adjusting Phase shifts timing of the subwoofer output to align
with the main speakers or additional subwoofers.
- Polarity Switch: In some cases, reversing polarity
(Positive or Negative) solves dips or humps at the crossover frequency
between a subwoofer and speaker and can be used to fix bass nulls or overly
boomy spots in the listening area. Reversing the electrical polarity of the
subwoofer amplifier makes it so the woofer moves in when speaker drivers
move out and is normally set to positive.
- Parametric EQ: The built-in Parametric EQ is a powerful
tool for removing peaks and dips in your listening area, and for creating
custom subwoofer output based on personal listening preferences. It allows
you to set the desired center frequency of the filter (20-200Hz), increase
or decrease the SPL dB of the filter (-12 to 6.0dB), or adjust the bandwidth
of the filter (0.2-10.0).
- Room Gain Compensation: The Room Gain Compensation
feature fixes bloated sounding bass by optimizing low frequency output and
extension when too much sound wave density is being created by a small room.
The RGC frequency can be set to 25, 31, or 40Hz; while the RGC slope can be
set to 6 or 12dB.
- Presets: You can store up to three preset settings for
movie, music and custom. This enables easy switching to optimize the
PC-4000's output and settings based on your specific listening preferences
with different kinds of content. If using the SVS App, these presets can be
renamed as desired.
Active Power Factor Correction (PFC) & Ground Loop Isolation:
Active Power Factor Correction (PFC) & Ground Loop Isolation serves as a line
conditioner, surge suppressor and voltage regulator letting the amplifier deal
with wide voltage fluctuations and ensuring the subwoofers operate flawlessly on
any household circuit no matter how unstable the incoming current. An isolated
circuit creates a vanishingly low noise floor by eliminating the potential for
ground loop hums from outside components resulting in absolute sonic
Balanced & Unbalanced Connections: The SVS PC-4000 is
equipped with balanced (XLR) and unbalanced (RCA) inputs and outputs for
flexible connectivity. Superior audio quality is ensured with the distinctive
noise reduction capability of a balanced connection with XLR jacks.
- XLR & RCA Inputs: The balanced XLR and unbalanced RCA
inputs are used for line-level connection between your receiver and the
powered sub. This type of connection enables the PC-4000's on-board low pass
filter for a smooth blend with the your main speakers.
- LFE/RCA Input: The LFE input (Left RCA) connects to the
LFE output of your AV receiver or preamplifier. The LFE connection your
receiver's or preamplifier's processor to perform the upstream bass
management and send the subwoofer a pre-filtered mono signal (bypassing the
low pass crossover in the PC-4000).
- XLR & RCA Outputs: You can use the balanced XLR or
unbalanced RCA outputs on the PC-4000 to daisy-chain additional subwoofers.
It's important to use the matching output and input terminals. For example,
if you are using the RCA inputs, be sure to use the RCA outputs to daisy
chain to the next subwoofer.
Rigid MDF Enclosure: The SVS PC-4000 powered subwoofer
features a rigid MDF (Medium Density Fiberboard) cabinet to resist unwanted
distortion caused by vibration. A double thick 2" MDF front baffle and rigid
internal bracing is used to support the massive drive unit and to ensure an
acoustically inert environment. This highly reinforced internal design and
acoustic insulation eliminates all coloration or resonance from the cabinet,
even when the deepest low frequencies are played at reference volume.
SoundPath Subwoofer Isolation System: The PC-4000 comes with SVS's
SoundPath Subwoofer Isolation System for cleaner sounding bass with increased
definition, more punch and decreased bass bleed to the rest of the house. The
SVS SoundPath Subwoofer Isolation System consists of four Elastomer isolation
feet with a steel outer shell. The SoundPath Subwoofer Isolation System improves
bass performance while drastically reducing floor and wall vibrations, noise
artifacts and complaints from neighbors or roommates. De-coupling a subwoofer
from the floor allows low frequency energy to be transferred through the air
where it can be felt, resulting in tighter and cleaner sounding bass, no more
distracting buzz or rattle from the room, and better overall dynamics.
Placement Options: Placement of a powered subwoofer is a
process driven by competing variables that differ in every home. Décor, floor
space, furniture, speaker placement, seating location, and of course, sound
quality all factor into the decision of where a subwoofer should be placed. If
you have flexibility, there's an artistry to subwoofer placement that can be
aided by understanding some basic acoustic principles and set-up techniques.
- Corner Placement: Corner placement of a subwoofer
reduces the potential to encounter nulls, which are acoustic cancellation
points or "dead spots" in the room. While this can often make for hugely
impactful bass, it can sometimes result in a "boomy" sound depending on your
listening position. If you experience this, you can use the tuning controls
to blend your PC-4000 more smoothly with your speakers or try pulling it
further away from the walls to smooth out the bass response.
- Front Placement: Front of the room placement in between
or just to the side of the front channel speakers is another common choice.
Front of the room placement usually results in the best blending with the
main speakers and center channel and minimizes localization effects.
- Side Wall Placement: Side wall placement is less
frequently used but can be an effective subwoofer location for excellent
accuracy and output.
- Dual Sub Placement: Based on extensive testing, and
research done by the professional audio community, SVS recommends the
following placement options for dual subwoofers - (1) Opposite diagonal
front/rear corners, (2) At the mid-points of the side walls, (3) Front stage
in the corners, or (4) Front stage flanking the center channel to the inside
of the main speakers.
Auto On/Standby: With the "Auto On/Standby" feature
activated, the powered sub will automatically turn-on when an audio signal is
sensed and automatically turn off if there is no audio signal for several
minutes. There is also a Main Power On/Off switch located on the back of the
3V-12V Trigger Input: When in standby mode, the powered
sub's trigger input (3.5mm) can be used to automatically turn on the powered
subwoofer if a signal is sent to this input from another component in the system
(like your AV receiver) that features a trigger output.