ASCENDO 18-2 Sub Pro-Passive Sealed Shallow Speaker User Manual
- June 9, 2024
- ASCENDO
Table of Contents
- ASCENDO 18-2 Sub Pro-Passive Sealed Shallow Speaker User Manual
- IMPORTANT SAFETY INSTRUCTIONS
- DISPOSAL
- RoHS
- REACH
- THANK YOU FOR CHOOSING ASCENDO IMMERSIVE AUDIO.
- PACKAGE CONTENTS
- PLACEMENT
- CONNECTIONS
- USING ONE The 18-2 SUB Pro Passive Sealed Shallow SUBWOOFER WITH TWO
- CARING FOR YOUR PRODUCT
- SPECIFICATIONS
- DIMENSIONS
- DOCUMENTS / RESOURCES
- Read More About This Manual & Download PDF:
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
ASCENDO 18-2 Sub Pro-Passive Sealed Shallow Speaker User Manual
IMPORTANT SAFETY INSTRUCTIONS
- Read these
- Keep these
- Heed all warnings.
- Follow all
- Clean only with a dry
- Install this apparatus in accordance with the manufacturer’s
- Do not install this apparatus near any heat sources such as radiators, heat registers, stoves or other
- 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.
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.
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.
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.
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.
PACKAGE CONTENTS
PLACEMENT
When using subwoofers within the limited con- fines of a typical home theater room, the bound- ary 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 frequen- cies 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 equal- ization cannot be used to compensate
for large response dips, only peaks. For example, using equalization to
restore a 13dB response dip re- quires 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 am- plifier into clipping, which will
significantly de- grade audio quality and reduce the overall out- put
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 subwoof- er will result in the least
consistent bass per- formance 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 proper- ly placed subwoofers almost always reduces or
eliminates such response dips. Common place- ment formulas such as placing the
subwoofers at
¼ points rarely work in practice. The best solu- tion is to make high- resolution measurements from the primary listening area while experi- menting with speaker placement. Placing a sub- woofer 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.
CONNECTIONS
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.
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 con- nect 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.
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 termi- nation. 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.
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 subwoof- er 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 posi- tive 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
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.
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
DIMENSIONS
The 18-2 SUB PRO PASSIVE SEALED Shallow
DOCUMENTS / RESOURCES
**** ASCENDO_The 18-2 SUB PRO PASSIVE SEALED Shallow (pdf)