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.