NEXT audiocom FLEXi15 Flexible PA System 15 Inch Subwoofer User Manual

: June 12, 2024
: NEXT audiocom

Table of Contents

INTRODUCTION
HANDS ON
SERVICE
References
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NEXT audiocom FLEXi15 Flexible PA System 15 Inch Subwoofer User Manual

INTRODUCTION

GENERAL DESCRIPTION

Thank you for purchasing a NEXT Audiocom FLEXi System. This user manual will provide you with useful and important information about your equipment. Please devote some time reading it and keep it at hand for future reference.

The NEXT Audiocom FLEXi Series is composed by one 15″ subwoofer and two 8″ satellites designed for installations and portable solutions. The premium- quality components provide a balanced sound with an excellent low frequency extension. This system can be an ideal solution for hotels, restaurants, bars, lounges, conference rooms and many others.

ATTENTION! Because of the continuous evolution of techniques and standards, NEXT Audiocom reserves the right to change the specifications of its products without warning. For the most updated version of this manual and general information about this and other products, please visit our website www.nextaudiogroup.com.

UNPACKING

NEXT Audiocom’s products are built under strict quality guidelines and supervision, according to the highest standards. When unpacking your product, carefully examine it for any signs of possible transit damage and inform your dealer immediately if any such damage has occurred. It is suggested that you retain the original packaging so that the product can be repacked in the future when necessary. Please note that NEXT Audiocom and its authorized distributors cannot accept any responsibility for damage to any returned product using non-approved packaging.

SAFETY FIRST

Please take some time to review the following statements concerning safe use of your NEXT Audiocom FLEXi System.

Read these instructions
Keep these instructions
Heed all warnings
Follow all instructions
Use the equipment only for its intended purpose as instructed in this manual
Before installing, observe the applicable safety regulations for your country
Always check if the equipment is installed securely and will not fall
Do not attempt to move the enclosures while connected
When mounted on a pole, always ensure that the floor or structure where the stack will take place is even and can withstand the weight
Never install close to ignition or heat sources such as radiators, ovens or any other apparatus that produce heat
Do not use or install the equipment near water or exposed to rain
If the equipment is not functioning properly or has been damaged in any way, switch it off immediately
Do not open or try to service the equipment. It may only be repaired by authorized, qualified personnel
Clean the equipment using only a clean dry cloth
Do not operate the unit for an extended period with the sound distorting

WARNINGS

CAUTION:
Never remove the cover, because otherwise there may be a risk of electric shock. There are no user serviceable parts inside. Have repairs carried out only by qualified service personnel.

The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electrical shock.

The exclamation mark within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance instructions.

CAUTION:
This equipment is intended for professional use. Therefore, commercial use of this equipment is subject to the respectively applicable national accident prevention rules and regulations. As a manufacturer, NEXT Audiocom is obligated to notify you formally about the existence of potential health risks. Hearing damage due to high volume and prolonged exposure: When in use, this product is capable of producing high sound-pressure levels (SPL) that can lead to irreversible hearing damage in performers, employees, and audience members.
For this reason, avoid prolonged exposure to volumes in excess of 90dB

HANDS ON

FLEXi 15 SYSTEM OVERVIEW

OVERVIEW

Main Level Adjustment
Subwoofer Level Adjustment
ON: Lights when the system is turned on
SIG: Lights when the system receives audio signal
CLIP: Lights when the system is clipping
Preset List
Stereo Audio Input (2 x Balanced Combo XLR)
Subwoofer Phase Switch (0º or 180º)
Stereo Audio Output (2 x Balanced XLR)
Audio Input Switch (Mono or Stereo)
Preset Selection Push Button
Satellite Speaker Output (2 x SpeakON NL4 1+/1-)
Input Voltage Selector (110V or 230V)
Power Switch (On or Off)
Mains Power Input – IEC Connector / Protection Fuse (T12A/250V or T6.3A/250V)
Satellite Speaker Input – From Subwoofer (1 x SpeakON NL4 1+/1-)

CONNECTIONS

The NEXT Audiocom FLEXi 15 satellite speakers have a nominal impedance of 4Ω. Use two speaker cables with Neutrik NL4 connectors to link the subwoofer to the satellite speakers (dashed line). Both ends of the cable must be connected to 1+/1-.

Connect the desired audio source to the subwoofer using a TRS Jack or XLR connector (bold line). In mono operatio, use only the LEFT signal input and select MONO on “Input Type”. Expand your sound system linking two or more FLEXi 15. Connect both systems using a XLR cable (solid line).
CONNECTIONS

PRESETS AND FUNCTIONALITIES

Adjust the system preset according to your needs using the “Preset Selection” rotary encoder.

FLAT INDOOR – System’s Flat Response on Indoor Events – use this preset in live performances for clarity of voice and instruments.

FLAT OUTDOOR – System’s Flat Response on Outdoor Events – use this preset in live performances for clarity of voice and instruments.

MUSIC – System’s EQ for Music Reproduction – use this preset for recorded music playback applications.

DJ – System’s EQ for DJ Events – use this preset for electronic dance music applications.

VOCAL – System’s EQ for Speech – use this preset for speech or mainly vocal applications.

Use the “Subwoofer Phase” switch to reverse, or not, the polarity of the subwoofer. This can be useful when there is no summation between satellite speakers and subwoofer due to positioning. Try to reverse the polarity to check wether you get the better results.

ATTENTION!
By default, the system comes ready to operate at 230V. If you need to operate at 115V, always remember to change the voltage switch to 115V and replace the mains fuse by the one supplied with the equipment (T12A/250V) – all the procedures must be done with the system disconnected from the power.

SERVICE

TROUBLESHOOTING

Problem: No sound coming from the satellite speaker

Action to Solution:

Check volume levels on the subwoofer amplifier, signal sources and the connections between them. Check if the signal led is reacting to the signal source. If everything seems to be ok, connect another speaker known to be working to the subwoofer. If it works, the wiring to the satellite speakers may have problems, or the satellite speakers are damaged.
Check that you have the correct pair of wires connected to the speakers you are trying to work with. Look for signs of damage if possible and check that the wires are correctly mounted on the connector and the connecter is correctly inserted on the speaker.

Problem: Little to no bass

Action to Solution:

This happens most of the times when two or more speakers near each other, are wired out of polarity. In this case low frequencies will cancel each other acoustically. Check that the “+” on the subwoofer amplifier, is connected to the NL4’s 1+ and the “-“ marked on the subwoofer amplifier is connected to the NL4’s 1-.

Problem: Buzzing, hissing or humming

Action to Solution:

If there is noise and no program material is playing, check your entire signal chain for the bad component. It can also be a matter of poor grounding or a ground loop. Check and correct the system grounding.

Problem: Sound is distorting with PEAK led OFF

Action to Solution:

Reduce the level from the audio source, such as the mixer, increase the level on the input potentiometer.

Problem: Sound is distorting with PEAK led mostly ON

Action to Solution:

Reduce the MAIN LEVEL on the subwoofer amplifier.

Problem: Weak high frequency response at listening point

Action to Solution:

Probably the room is too absorbent or you are listening from a long distance. To increase the HF frequency response, select the FLAT OUTDOOR preset.

Problem: Poor low frequency connection between SUB+SAT

Action to Solution:

Probably subwoofer and satellite speakers are out of phase. Invert the subwoofer phase using the “Subwoofer Phase” switch.

Problem: The subwoofer amplifier doesn’t turn on

Action to Solution:

Check if the voltage selector is on the desired voltage position and the adequate fuse is in place. Check the fuse status, if the fuse is blown, replace it.

SIMPLIFIED EU DoC

Hereby, CVA ELECTRONICA, LDA declares that this equipment type is in compliance with the mandatory directives for the CE certification. The full text of the EU declaration of conformity is available at the following internet address: www.nextaudiogroup.com/en/apoio-ao- cliente/downloads

WARRANTY POLICY

NEXT Audiocom products are warranted, by NEXT Audiocom, against manufacturing defects in materials or craftsmanship over a period of 2 years counting from the date of original purchase for final costumer. The original receipt of purchase is mandatory for warranty validation purposes, and the product must have been bought from a NEXT Audiocom authorized dealer. The warranty can be transferred to a subsequent owner during the warranty period, however, this cannot extend the warranty period beyond the original warranty period of two years from the original date of purchase stated on the NEXT Audiocom’s invoice. During the warranty period NEXT Audiocom will, at its own discretion, either repair or replace a product which prove to be defective provided that the product is returned in its original packaging, shipping prepaid, to an authorized NEXT Audiocom service agent or distributor. NEXT Audiocom cannot be held responsible for defects caused by unauthorized modifications, improper use, negligence, exposure to inclement weather conditions, act of God or accident, or any use of this product that is not in accordance with the instructions provided by this manual and/or NEXT Audiocom. NEXT Audiocom is not liable for consequential damages. This warranty is exclusive, and no other warranty is expressed or implied. This warranty does not affect your statutory rights.

CORRECT DISPOSAL

When the speakers are to be definitively discarded, take the product to a local recycling plant for a disposal which is not harmful to the environment. This equipment should not be treated as general household waste.

Devices marked with this symbol must not be disposed of as household waste. For more information, please contact your retailer or local authorities.