Ascendo 18-2 SUB PRO PASSIVE SEALED Shallow Operation Manual

E L E V A T E YOUR SOUND
18-2 SUB
PRO-PASSIVE
SEALED SHALLOW
OPERATION MANUAL
DISPOSAL
Correct disposal of this product (Waste Electrical & Electronic Equipment) This symbol means the product must not be
discarded as household waste and should be delivered to an appropriate collection facility for recycling. Proper disposal
and recycling help protect natural resources, human health, and the environment. For more information on disposal and
recycling of this product, contact your local municipality, disposal service, or the shop where you bought this product.
18-2 SUB
PRO-PASSIVE
RoHS
This product is RoHS compliant. This product is in compliance with Directive 2011/65/EU, and its amendments, on the
restriction of the use of certain hazardous substances in electrical and electronic equipment.
SEALED SHALLOW
REACH
REACH (Regulation No 1907/2006) addresses the production and use of chemical substances and their potential impacts
on human health and the environment. Article 33(1) of REACH Regulation requires suppliers to inform the recipients if
an article contains more than 0.1 % (per weight per article) of any substance(s) on the Substances of
Very High Concern (SVHC) Candidate List (‘REACH candidate list’). At the time of release of this product, no substances
of REACH candidate list are contained in a concentration of more than 0.1% per weight in this product.
THANK YOU FOR CHOOSING ASCENDO IMMERSIVE AUDIO.
For more than 23 Years, ASCENDO has been involved in music reproduction. We are confident that the PRO product you
have chosen will provide every note of enjoyment that you expect.
Contents
2
3
Please take a moment to register your product on our website at www.aia-cinema.com. This enables us to keep you
posted on our latest advancements and helps us to better understand our customers and build products that meet their
needs and expectations. All features and specifications are subject to change without notice.
4
5
6
PACKAGE CONTENTS
6
7
7
IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
E L E V A T E YOUR SOUND
4. Follow all instructions.
5. Clean only with a dry cloth.
18-2 SUB
PRO
-PA SSI VE
SEALED SH
ALLOW
6. Install this apparatus in accordance with the manufacturer’s instructions.
7. Do not install this apparatus near any heat sources such as radiators, heat registers, stoves or other apparatus.
8. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been dam
aged in any way, or the apparatus has been exposed to rain or moisture, does not operate normally or has
been dropped.
2
OPERATION MANU
AL
1 x Subwoofer
1 x Grille
1 x Quick Start Guide
3
PLACEMENT
When using subwoofers within the limited confines of a typical home theater room, the boundary reflections, standing waves, and resonant
absorbers within the room will create peaks and
dips in the bass response that can vary greatly
depending on where the listeners are seated in
the room. A listener located in one place may
hear an overabundance of several bass frequencies created by a response peak at the location,
while another listener only a few feet away may
hear far less bass at those frequencies but have
other peaking or dipping frequencies at that
location.
The locations of subwoofers within the room
(along with the room’s dimensions) also have
a profound effect on the creation of these bass
response peaks and dips. Careful subwoofer
placement alone cannot compensate for all bass
response peaks and dips throughout a room,
but careful subwoofer placement can eliminate
or significantly reduce the largest response dips.
It is important to reduce response peaks and
dips throughout the room as much as possible
via proper subwoofer placement because equalization cannot be used to compensate for large
response dips, only peaks. For example, using
equalization to restore a 13dB response dip requires that the subwoofer amplifier deliver 20
times the power at that frequency if it solves the
problem at all, which it does not in most cases.
This can quickly overdrive the subwoofer amplifier into clipping, which will significantly degrade audio quality and reduce the overall output capability. In almost any room, placing the
subwoofers in corners will produce the fewest
large bass response dips and will also produce
the largest bass response peaks. We strongly
recommend that you install multiple subwoofers
regardless of the room size. A single subwoofer will result in the least consistent bass performance throughout the room. Using multiple
subwoofers can reduce some room modes at
the various listening locations, resulting in much
more consistent low frequency throughout the
listening area. It is often impossible to place a
single subwoofer in a way that large response
dips, which cannot be corrected via equalization,
are not present. The use of two or more properly placed subwoofers almost always reduces or
eliminates such response dips. Common placement formulas such as placing the subwoofers at
¼ points rarely work in practice. The best solution is to make high-resolution measurements
from the primary listening area while experimenting with speaker placement. Placing a subwoofer at the listening position and measuring it
from the potential installation positions around
the room – using acoustic reciprocity – can help
speed finding the best position(s). Measurement
at the best positions in this manner will produce
the measurements with the fewest and smallest
peaks and dips in the response.
4
CONNECTIONS
Single Subwoofer
Speakers and electronics have corresponding (+) and (–) terminals. Most manufacturers of speakers and electronics, use
red to denote the (+) terminal and black for the (–) terminal. It is important to connect both terminals identically: (+) on the
speaker to (+) on the amplifier, and (–) on the speaker to (–) on the amplifier.
Video Screen
This connection ensures, that all speakers work in unison and make a forward movement if a positive signal is applied and
move backward when a negative signal is applied.
Wiring “out of phase” results in thin sound, weak bass, and a poor stereo image. With the advent of multichannel surround
sound systems, connecting all the speakers in your system with the correct polarity remains equally important to preserve
the proper ambience and directionality of the program material.
The AIA “The 18-2 SUB Pro Passive Sealed Shallow” subwoofer has dual inputs, with one input for each woofer. For driving
the 18-2 from a single amplifier channel, the (+) terminal of the amplifier should connect to both (+) input terminals of the
The 18-2. The (–) terminal of the amplifier should be connected to both (–) terminals. (Figure 2)In this wiring configuration,
the amplifier will be presented with a 2 Ohm load. Alternatively, (Figure 1) two equal amplifier channels can be used, one
for each woofer.
Each amplifier (+) terminal should connect to one of the woofer input (+) terminals. Each amplifier (–) terminal should connect to the (–) terminal of the terminal set that is connected to the same amplifier channel’s (+) terminal.
If the bass response seems low, there may be a polarity or phase problem between the two drivers, with the sound waves
from the two woofers canceling each other out. Double-check your wiring and DSP settings to make sure both woofers in
a single 18-2 have their (+) terminal connected to the appropriate amplifier (+) terminal and their (–) terminal connected
to the appropriate amplifier (–) terminal.
Double Subwoofer
Video Screen
Video Screen
If two 18-2 subwoofers are used, the wires for both speakers should be similar in length. If the bass response seems low,
there may be a phase problem between the subwoofers, with the sound waves from the two subwoofers canceling each
other out. If the bass response seems low, check the correct polarity of all wiring including Speaker wires, XLR signal cables,
DSP settings etc.
To use the speaker terminals on the terminal cup located behind the 18-2 unplug the phoenix connector for easier termination. Insert the bare end of the wires making sure to observe the correct polarity. The wire from the amplifier’s negative
(-) terminal is to be connected to the negative (-) terminal on the terminal cup, and the amplifier’s positive (+) terminal is
to be connected the positive (+) terminal on the terminal cup.
Rooms with a single row of seating
Rooms with multiple seating rows
The 18-2 subwoofer is specifically designed for use in conjunction with the AIA DSP amplifiers. It is optimized to offer the
best dynamics and frequency response which is specially designed to use the proprietary 18-2 tuning file. When using a
different amplifier with the 18-2, contact your certified AIA installer or calibrator for correct adjustment and loading of
the tuning file. Connect your main receiver or processor’s LFE subwoofer output to the line-level input on your subwoofer amplifier. When using two or more subwoofers, use the correct number of amplifier channels (these can be mono or
multi-channel amplifiers) each connected to the appropriate output on your processor or receiver. Then connect the positive and negative terminals for each amplifier channel to a single 18-2 subwoofer system.
USING ONE The 18-2 SUB Pro Passive Sealed Shallow SUBWOOFER WITH TWO AMPLIFIER CHANNELS
Four Subwoofers
Video Screen
E L E V A T E YOUR SOUND
E L E V A T E YOUR SOUND
THE 18-2 SUB PRO Passive Sealed Shallow
THE 18-2 SUB PRO Passive Sealed Shallow
with two amplifier channels
with a single amplifier channel
Wiring Diagram
Wiring Diagram
5
CARING FOR YOUR PRODUCT
Wipe the cabinet with a clean, dry cloth to remove dust. A damp cloth may dull the cabinet’s finish. Do not use volatile
liquids such as benzene, paint thinner or alcohol on the cabinet.
DIMENSIONS
The 18-2 SUB PRO PASSIVE SEALED Shallow
Do not spray insecticide near the cabinet.
To remove dust from the grille fabric, use a vacuum cleaner, soft brush and set to low suction.
Do not wash the grille in water, as water may fade the grille’s color or make it uneven.
If the surface of the woofer cone becomes dusty you can carefully sweep it clean with a soft, dry calligraphy brush or
paint brush or low air pressure. Do not use a damp cloth.
SPECIFICATIONS
Enclosure type
Sealed
Low frequency driver size and material
Low frequency driver size and material: Dual 18-inch forwardfiring, advanced carbon rohacell composite sandwich cones.
Neodymium Motor with 4” Ultra-high-temperature Voice-coil
Recommended amplifier type external
AIA DSP4-10K4
Recommended amplifier power
2500 WRMS per woofer (5000 WRMS Total)with correct
RMS & Peak limiting & compression settings.
Amplifier Features
DSP crossover and EQ
Nominal Impedance
4 Ohms per woofer
Sensitivity
88 dB/W/m, 94 dB/W/m system
Max peak SPL
SPL 143 dB @100Hz
Frequency Response, -3 dB
33 Hz – 400 Hz
Frequency Response, -15 dB
22 Hz – 400 Hz
Speaker Input
One 4-conductor Phoenix 12 AWG (3,3 mm²) push on binding
post
Dimensions (W/H/D) mm
600 / 1215 / 265 (with grille 292,5) Vertical
DOCUMENTS / RESOURCES
1200 / 615 / 265 (with grille 292,5) Horizontal
23,62 / 47,83 / 10,43 (with grille 11,52) Vertical
47,24 / 24,21 / 10,43 (with grille 11,52) Horizontal
Packing dimensions (W/H/D) mm
740 / 1340 / 430
Packing dimensions (W/H/D) inch
29,13 / 52,75 / 16,92
Weight
67 kg / 147,71 lbs
Gross weight
78,2 kg / 172,40 lbs
Finish
Matte black paint
E L E V A T E YOUR SOUND
Dimensions (W/H/D) inch
ASCENDO_The 18-2 SUB PRO PASSIVE SEALED Shallow (pdf)
18-2 SUB
PRO-PASSIVE
SEALED SHALLOW
OPERATION MANUAL
Technical modifications subject to change without further notice
6
7