Legacy Metro XD User manual

Metro XD
Owners Manual For The
Subwoofer System
Page 1 of 19

Registration
Page
Owners Record 3
The Cabinetry / Our Commitment 4
Warranty 5
Setup
Unpacking Your Speakers 6
Speaker Placement
7-8
Table of Contents
Fine Tuning 12-13
Speaker Connections 9-11
Technology
Specifications 16
Designer Notes
Room Resonances 14
Subwoofer Boundary Reinforcement: Corner Placement 15
Page 2 of 19

Owners Record
The serial number is located on the rear of the unit. Record this number
in the space provided below. Refer to this when calling your dealer
regarding this product.
Model: Metro XD
Serial No:
Date of purchase:
Register your product at legacyaudio.com/register
Share your Legacy speakers with the Legacy community. Post your Legacy
experience and system photos at facebook.com/LegacyAudio. Like the page
to continue receiving the latest Legacy announcements.
Thank you for selecting a Legacy subwoofer. This handcrafted instrument
will provide you with many years of listening enjoyment.
Page 3 of 19

The Cabinetry / Our Commitment
Page 4 of 19

Warranty
• The warranty applies to the original owner and is not transferable.
• The warranty applies to products purchased from an “Authorized Legacy Dealer”.
• The warranty on active components such as digital processors or internal amplifiers is limited to three
(3) years of coverage.
• The warranty on dealer stock will extend for a maximum of two years from invoice.
The warranty does not cover transportation costs of product to or from the customer, distributor or dealer,
or related shipping damage.
The following situations or conditions are not covered by the Legacy Audio warranty:
• Use inconsistent with recommended operating instructions and specifications
• Damage caused by modification or unauthorized service
•Costs associated with the removal and reinstallation of defective products. Consequential damage to other
products.
• Normal wear such as fading of finishes due to sunlight.
Legacy Audio supports its customers and products with pride. We cheerfully warrant our loudspeaker
products we manufacture from defects in materials and workmanship for a period of seven (7) years.
Electronic components such as internal amplifiers and digital processors are covered for three (3)years.
Please register your product with Legacy Audio. Should you require service Legacy will require a proof of
purchase in order to honor the warranty - so please keep your receipt.
Exclusions from Warranty
• Accidental damage, electrical abuse (such as burnt or jammed voice-coils) or associated equipment failure.
Page 5 of 19

Unpacking Your Speakers
Your new subwoofer has been very carefully packaged to insure that it travels
to you safely. Each subwoofer is protected by a double- wall outer carton with
heavy V-board corner protectors. Custom fitted foam end caps are used to
protect the elegant cabinetry, and a custom bag is included to provide further
protection. Please save this packing for future transportation. If cartons become
damaged or misplaced, new ones can be purchased from Legacy Audio.
Page 6 of 19

Speaker Placement
We can calculate what the most strongly reinforced frequencies in a room will
be by the formula shown below:
Since the human ear is rather poor at localizing radiation frequencies below 125
Hz, good results may be obtained in a variety of room placements. Careful
adjustment of the convenient panel controls will lead to seamless transition.
Resonant Frequency = (1130 ft/sec) / (ft. between boundaries x 2)
For example, a room with an 8 ft. ceiling height has a strong resonance at:
(1130 ft/sec.) / (8 ft. x 2) = 71 Hz.
Low frequency reinforcement occurs whenever woofers are placed near
room boundaries. The distance from the walls, floor and ceiling correspond to
the wavelengths of the frequencies which will reflect IN-PHASE and thus
reinforce bass output. Therefore, the actual dimensions of your listening room
play a definite role in what ultimately arrives at your ear.
Page 7 of 19

Speaker Placement
Now, while such reinforcement might actually be beneficial at very low
frequencies, excessive excitation can cause “overhang” or a droning effect at
mid-bass frequencies. A way to minimize excitation of these
resonances is to place your subwoofer asymmetrically relative to room
boundaries. For instance, if the subwoofer is 2 ft from one corner wall, then
place it 1.5 ft to 3 ft from the other.
Placing the subwoofer in a corner will reduce the radiation angle and thus
increase efficiency. It will also excite the maximum number of room modes and
decrease distortion.
A best case scenario is to actually use two subwoofers, one to each side of the
listener. The subs should be placed 90° out of phase with each other. This
improves spaciousness and bass uniformity, with a reduction in room level
peaks.
Page 8 of 19

Speaker Connections
NOTE: if using the low-level inputs, we suggest using cables that are no
longer than 5 meters. Longer lengths of RCA cable can result in greater
noise and attenuation of the signal.
Once you’ve found a place in your room, the next step is connecting the
Metro XD to your existing system. Listed below you will find 3 options.
Option 1: Connecting the Metro XD using the stereo Low Level
preamp/processor inputs.
If using Left/Right output jacks from the preamp, the internal circuit module of the
Metro XD will sum the two channels together. When using the left and right low
level inputs on the subwoofer, the internal crossover of the subwoofer is being
used. The crossover frequency and level will be controlled by the appropriately
labeled controls on the rear panel of the sub.
Page 9 of 19

Option 2: Connecting single sub out
Connect the preamp/processor’s “sub out” to the left channel RCA input
(mono).
Option 3: The Metro XD provides an XLR input jack for balanced connections
from your preamp or processor
Page 10 of 19

Speaker Connections
NOTE: Try to plug into the same AC circuit as the rest of your audio system, as this will
avoid hum from ground loops.
I = Auto On
0 = Off
Powering Up Metro XD
1. Power Cable: The supplied power cable will plug into the socket on the back
terminal plate of the unit.
2. Power Up: On the rear of the subwoofer adjacent to the power cable socket on the
back panel is the power switch. This switch controls current flow to the entire unit as
follows:
Page 11 of 19

Fine Tuning
Adjusting the Metro XD Subwoofer
On the back panel of the Metro XD
Subwoofer you’ll notice four controls: Level,
Freq., Blend and Phase. These allow an
extraordinary amount of control over your
subwoofer. These controls will allow you to
tailor the sound of the sub to your room and
integrate with your main speakers.
Level (Min/Max): This will allow you to
adjust the output volume of the subwoofer.
When using a theater processor, the level &
crossover frequency can be controlled remotely
with the subwoofer level control knob left at
the 3 o'clock position.
Freq.: This control selects the range of low
frequency content that will be reproduced.
The crossover filter can be varied to pass
frequencies below 40Hz and up to 150 Hz.
Page 12 of 19

Fine Tuning
Using pink noise or a 50-60 Hz test tone, listen for the strongest output. Now take note
of that setting. Next, play music program material and optimize the level and phase
settings further; adjusting for the smoothest output.
While seated at your listening position, have someone sweep the phase control slowly
from one extreme to the other.
Phase (0 °/-180 °): This control is essential in the proper setup of your subwoofer. If
not set up properly, your main speakers and subwoofer can actually work against each
other. If operating out-of- phase the subwoofer and mains will cancel, creating nulls at
some frequencies (primarily upper bass).What is desirable is to have the subwoofer
and the mains operating in phase, relative to the primary listening position. Here is an
effective method of accomplishing this:
Page 13 of 19

Page 14 of 19
Designer Notes: Room Resonances

Page 15 of 19
Designer Notes: Subwoofer Boundary Reinforcement

Inputs:
2 RCA, 1 pair high level
Blend EQ: Level Control
Sub-Bass Radiator: 15" mass loaded down firing
Low Frequency Alignment: 6th Order
Internal Amplification: 750w, Class D ICEpower
Freq. Response (Hz, +/-2dB):20-150
Impedance: 10k
Phase Adjustment: Cont. +/-180
Max. SPL: 118dB @ 1m
Low Pass Filter Slope: 18 dB per octave
Crossover Hz: 40-150
Specifications
System Type: Subwoofer, pneumatically coupled
Cabinet Dimensions (in): 16 x 16 x 16
Shipping Dimensions (in): 22.63 x 22.5 x 21.75
Cabinet Weight: 68 lbs
Shipping Weight: 123 lbs
Page 16 of 19

CE Declaration of Conformity WEEE Compliance
Product Disposal—
Legacy Audio
3023 E. Sangamon Ave.
Springfield, IL 62702 USA
800-283-4644
States that this product is in conformity with the with
the essential requirements and other relevant
provisions of:
Low Voltage Directive 2006/95/EC
EMC Directive 2004/108/EC
Certain international, national
and/or local laws and/or regulations
may apply regarding the disposal of
this product. For further detailed
information, please contact the
retailer where you purchased this
product or
the Legacy Audio Distributor in
your country. A listing of Legacy
Audio Distributors can be found
on the Legacy Audio website
www.legacyaudio.com
or by contacting Legacy Audio at:
3023 E. Sangamon Ave.,
Springfield, IL 62702, USA—
Phone: [phone].
Page 17 of 19

Notes:
Page 18 of 19

©2016Legacy Audio
3023 E Sangamon Ave.
Springfield, IL 62702
Phone: [phone]
Fax: [phone]
Page 19 of 19