Velodyne Acoustics VRP-1220 Owners manual

VRP Series

VRP-1000
VRP-1200

USER’S

MANUAL

Home Theater Subwoofer

Caution

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VRP User’s Manual

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Table of Contents

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ongratulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Rear Panel Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Crossovers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Interconnect Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Care of Your Subwoofer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Protection Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Troubleshooting and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Other Velodyne Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

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VRP User’s Manual

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Congratulations

C

ongratulations on your purchase of a Velodyne Rear Port (VRP™) subwoofer system. This
system represents the state-of-the-art in home audio reproduction and will provide you with
years of listening pleasure when properly cared for. Read and follow this instruction manual to
insure safe and proper system connection and operation.

Caution!

Please observe the following instructions to insure safe and proper system operation.

Note: Do not leave unit in direct sunlight or use in high humidity environments!!!

Warning!

To prevent fire or shock hazard, do not expose this equipment to rain or moisture. To avoid
electrical shock, do not open speaker enclosure or amp chassis cover. Please observe all
warnings on the equipment itself. There are no user serviceable parts inside. Please refer all
service questions to your authorized Velodyne dealer.

Prior to Installation:

Please unpack the system carefully. This unit is heavy. Use caution when lifting or moving to
avoid injury. Remove all staples used to seal the carton as they can scratch the cabinet. Please
save the carton and all packaging materials for future use. Packing this unit in any other carton
may result in severe damage when shipping. Record the serial number in the space provided
on page 13 for futur

e reference.

Product Features

• A single driver consisting of either:

- 10” (8.2” piston diameter) subwoofer with 2.0” high-temp voice coil
and 40 ounce motor structure or,

- 12” (9.7” piston diameter) subwoofer with 2.0” high-temp voice coil
and 40 ounce motor structure

• Adjustable (50 to 200 Hz) low-pass crossover with a 12 dB/octave slope

• Line-level (RCA) inputs

• Speaker-level inputs and outputs with spring loaded terminals

• Signal sensing auto turn on/off

• Variable volume control

• Selectable phase control (0° or 180°)
een power on/ Red power standby mode indicator LED

• Gr

Prepare for Installation

Your new Velodyne subwoofer provides for a number of installation options. Read all the
installation information below in order to determine which installation option is best for your
system.

to prevent possible damage.

Remember to perform all installation procedures with system power turned off

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VRP User’s Manual

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Placement

True subwoofers operate at extremely low frequencies that are primarily omni-directional. Keep
i

n mind that frequency response and output level can be
depending on the acoustic properties of the listening room. Typically, the optimum location for
a subwoofer is tucked away in a corner of your listening room. This location will usually offer the
greatest output levels and optimum low frequency extension. The worst location for a subwoofer
is typically far away from any walls, and close to the center of your room. Avoid these locations
when possible. When using a pair of Velodyne subwoofers in stereo, it is preferable to place
each subwoofer by the satellite of the same channel.

Caution! This subwoofer has electronics built into the cabinet. Do not place the cabinet
next to sources of heat such as furnace registers, radiators, etc., or near sources of
excessive moisture, such as evaporative coolers, humidifiers, etc. The power cord
should be routed in such a way that it will not be walked on, pinched, or compressed in
any way that could result in damaging the insulation or wire.

Regardless of where you install your Velodyne subwoofer, it must remain in an upright position
(woofer facing forward). Using, shipping, or otherwise storing the subwoofer in any other
position for an extended period of time may result in damage to the unit not covered
by warranty.

Your VRP subwoofer is magnetically shielded to reduce the amount of stray magnetic energy
emitted from the speaker’s motor structure. This greatly increases flexibility when placing the
unit close to video monitors, as there is ver
are par
after installing your subwoofer, simply increase the distance between your television and the
subwoofer until normal color and operation is returned.

ticularly sensitive to stray magnetic fields. If your television produces distorted colors

y little stray magnetism. Cer

d

rasticallyinfluenced by placement,

tain types of televisions

Your new Velodyne subwoofer, like any good speaker system, requires proper positioning within
the listening space to provide maximum performance. Improperly placed speakers may degrade
the sound quality and reduce your listening pleasure. Depending on the size and type of
furnishings in the room, perfect placement may not be possible. Finding the best location for
your environment will likely require some experimentation. We suggest you experiment with
the location during setup to find what sounds best to you when seated in your typical
listening position.

Installation

Inputs

Your new subwoofer is equipped with speaker-level and line-level inputs. Use the LINE LEVEL
jacks when connecting your subwoofer to a pre-amp, signal processor (such as LFE out), line-

eceiver with pr

level cr
receivers may not provide enough signal to have the unit’s auto-on feature operate properly.
Additionally, this lack of signal may also cause the subwoofer to produce less output than it is
capable of.

ossover

, or r

e-amp level outputs. When using the line level jacks, some

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VRP User’s Manual

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T

o alleviate this condition, we recommend the following steps:

1

) If using line level jacks, BOTH THE LEFT AND RIGHT INPUT SHOULD ALWAYS BE USED

– never use just the left or just the right input. If the subwoofer’s input comes from the
LFE channel of your receiver, use the included “Y” splitter to divide the single input into
two inputs for the Left and Right subwoofer inputs. If using line level connections from
a preamp or signal processor, use both Left and Right inputs from your preprocessor or
preamp and connect them to the Left and Right inputs on your subwoofer.

2) If using a receiver with LFE out, be sure the LFE channel is sending adequate signal to

the subwoofer. We recommend setting the subwoofer’s level to the 9 o’clock position
(the 1/4 volume setting) and then adjust the LFE channel on your receiver or processor
to achieve the desired bass output. See your receiver or processor’s owner’s manual for
more information.

The

SPEAKER LEVEL jacks connect directly to the speaker outputs of any amplifier, integrated
amplifier, or receiver. Your amplifier section will notice no additional loading effects when you
use these inputs due to their very high impedance. If using the
DO want to connect both channels, since different bass information might be present in each
channel going to your main speakers.

SPEAKER LEVEL inputs, you

IMPOR
Do not use both LINE LEVEL and SPEAKER LEVEL connections simultaneously!

Caution!!! To avoid damage to your main amplifier, be sur
when making all connections - red (positive) to red, and black (negative) to black. Be
sure all connections are tight, and that there are no loose strands or frayed wires.

TANT!!!

e to maintain correct polarity

Volume Control

This contr
speakers/amplifier in your system. This contr
from both the main speakers and subwoofer when listening to music. A good starting point for
the volume control is two or three graduations from minimum.

ol allows you to balance the output from the subwoofer to the main

ol should be set to achieve similar output levels

Low-pass Crossover - 50 to 200 Hz

As noted above, all inputs sum the left and right channels together, with the resulting signal
passing thr
allows you to adjust the upper limit of the subwoofer’s frequency response from 50 to 200 Hz.
The subwoofer’s response will begin rolling off above the frequency you set this control to. You
should set the cr
subwoofer to the main speakers in your system. If your main speakers are smaller units with
limited low frequency output, you may wish to choose a higher frequency (such as 100 - 120
Hz) than you would with larger speakers which have greater low frequency output. With larger
speakers, you might star

ough an adjustable low-pass cr

ossover frequency to obtain a smooth and seamless transition from the

t with this contr

ossover befor

ol set lower

e being amplified. The cr

, such as 80 Hz.

ossover contr

ol

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VRP User’s Manual

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