NEXT-PROAUDIO LA122 (01) PDF Document

The NEXT-PROAUDIO LA122 is capable of producing extremely high sound pressure levels and should be used with care. Hearing loss is cumulative and can result from levels above 90dB if people are exposed for a long period. Never stand close to loudspeakers driven at high levels.

Always ensure that the floor or structure where the stack will be placed is even and can withstand the weight of the complete stack. Do not stack speakers too high, especially outdoors where winds could topple the stack. Place cables in a way that they do not present a trip hazard. Do not place any objects on top of the stack. Do not expose the systems to extreme heat or cold conditions to prevent component damage.

Before rigging or suspending the NEXT-PROAUDIO LA122 systems, inspect all components and all hardware for any signs of damage or missing parts. If you find any damaged, corroded or deformed parts, do not use them, replace them immediately. Do not use hardware that is not load rated or that its rating is not enough to handle the system’s weight with a good safety factor. Installation should only be carried out by qualified personnel who use adequate protective clothing and equipment.

When unpacking the NEXT-PROAUDIO LA122, examine it carefully for any signs of possible transit damage and inform your dealer immediately if any such damage is found. It is suggested that you retain the original packaging so that the system can be repacked in the future if necessary.

The NEXT-PROAUDIO LA122 is connected through Neutrik SpeakON NL4FC plugs. A wiring description is printed on the connections panels located on back of the cabinet.

The 4 pins of the two Neutrik NL4 SpeakON sockets are wired in parallel within the enclosure. The wiring is as follows:

The NEXT-PROAUDIO LA122 is a passive two way system. The high frequency band is reproduced by two 1.4 inch drivers connected in serial, having a combined nominal impedance of 16 Ohm. The low frequency is reproduced by a 12 inch driver with 8 Ohm nominal impedance.

Selecting a cable consists of calculating the correct cable section (size) in relation to the load impedance and the required cable length. The following table indicates, for 3 common sizes, a cable length with a maximum serial resistance equal to 4% of the load impedance (damping factor = 25):

The NEXT-PROAUDIO LA122 has a simple and intuitive four-point rigging system. It has 2 articulated joints on the front and 2 rear adjustable joints. The rear joints let you define the angle between two elements. The NEXT-PROAUDIO LA122 angle is adjustable from 0 degrees to 8 degrees relative to the upper element. Never use any lock pins but the ones supplied by the manufacturer.

Pull the joints out, insert them on the frame and lock them with locking pins. Insert two locking pins on the front joints, and one on the rear joints. To obtain a 0 degree alignment between the frame and the NEXT-PROAUDIO LA122, you need to lock the rear joints on the upper hole. Verify that the locking pins are locked.

Repeat step 1, this time inserting the NEXT-PROAUDIO LA122 in the previous one. The locking pin is inserted in the 2 degree angle. Repeat the process for the next two elements for angles 4 degrees and 8 degrees. Always verify that the locking pins are locked.

If you encounter vibrations, check for the following: Loose screws, air-leak noises (check that no screws are missing, particularly where the accessories attach to the cabinet), vibrations due to a front grille badly positioned on the quick release fixings, or internal connection wires or absorbing material touching the loudspeaker diaphragm.

Check if there is a foreign object that has fallen into the cabinet after repair or through the ports. Additionally, verify if the loudspeaker is not connected or phase reversed following a previous inspection, test or repair.

The frequency response of the NEXT-PROAUDIO LA122 is 58Hz to 19.000Hz.

The components of the NEXT-PROAUDIO LA122 are a 1 x 12 inch low frequency transducer with 3 inch voice coil and 2 x 1.4 inch high frequency compression drivers with 2.5 inch voice coils.

The NEXT-PROAUDIO LA122 has a program power handling of 800W for the LF section and 320W for the HF section.

The nominal impedance of the NEXT-PROAUDIO LA122 is 8 Ohm for the LF section and 16 Ohm for the HF section.

The sensitivity (1W at 1m) of the NEXT-PROAUDIO LA122 is 100dB (Full-Space) for LF and 108dB (Full-Space) for HF.

The calculated maximum SPL (Cont/Peak) of the NEXT-PROAUDIO LA122 is 129dB/135dB for LF and 133dB/139dB for HF.

The recommended crossover frequency for the NEXT-PROAUDIO LA122 is 1150Hz using a 48dB/oct Linkwitz-Riley filter.

The recommended high pass filter for the NEXT-PROAUDIO LA122 is 45Hz with 18dB/oct Butterworth slope.

The dimensions (W x H x D) of the NEXT-PROAUDIO LA122 are 677 x 350 x 450 mm. The net weight is 32.8 kg and the shipping weight is 34.8 kg.

The enclosure of the NEXT-PROAUDIO LA122 is made of 15mm Multi-laminate Birch Plywood, screwed and glued, with a black textured scratch resistant paint finish.

The NEXT-PROAUDIO LA122 features a 90 degree horizontal coverage and an 8 degree vertical coverage.

No, the NEXT-PROAUDIO LA122 line array elements are bi-amp only and were not designed to work in full-range.

The NEXT-PROAUDIO LA122 utilizes an adjustable (0 degree to 8 degree) rigging system.

The NEXT-PROAUDIO LA122 is equipped with a black-powder coated perforated grille.

The NEXT-PROAUDIO LA122 has a 90 degree horizontal coverage and 8 degree vertical coverage, whereas the NEXT-PROAUDIO LA122W has a 120 degree horizontal coverage and 15 degree vertical coverage.

The NEXT-PROAUDIO LA122 is a passive 2-Way Line Array Element.

High frequency reproduction for the NEXT-PROAUDIO LA122 relies on the exceptional characteristics of two 1.4 inch neodymium compression drivers designed for use in applications where high SPL and low distortion are required. A titanium diaphragm featuring a 65mm copper-clad, aluminium flat-wire voice coil yields high sensitivity, low distortion and extended frequency response.

The two HF drivers in the NEXT-PROAUDIO LA122 are loaded by a wave converter with path length equalization, the ICWG that transforms the spherical waves into cylindrical isophasic waves coupling seamlessly with the other high frequency transducers of the array.

Always verify that the locking pins are locked after completing any rigging adjustments for the NEXT-PROAUDIO LA122.

For the NEXT-PROAUDIO LA122, it is recommended to use cables with at least 2.5mm squared cross-section for short lengths.

The rear joints on the NEXT-PROAUDIO LA122 let you define the angle between two elements.

The ICWG wave converter in the NEXT-PROAUDIO LA122 transforms the spherical waves into cylindrical isophasic waves, which allows for seamless coupling with other high frequency transducers in the array.

Never use any lock pins but the ones supplied by the manufacturer for the NEXT-PROAUDIO LA122 as they are built to withstand the system’s weight with a specific safety factor and dimensions.

The NEXT-PROAUDIO LA122 is not weather-resistant, so try not to operate it under heavy rain or moisture. Also, do not expose it to extreme heat or cold conditions.

To troubleshoot the NEXT-PROAUDIO LA122, you should segment the system in order to identify the faulty component: signal source, controller, amplifier, loudspeaker or cable.

The NEXT-PROAUDIO LA122 is not “weather-proof” and should not be left outdoors in conditions that could cause damage or pose a risk to the stability of the stack.

A simple sweep with a sine wave generator (at a very low level) can help identify cabinet faults, such as vibrations or issues with the loudspeaker units in the NEXT-PROAUDIO LA122.

No, when performing a sine wave sweep to troubleshoot the NEXT-PROAUDIO LA122, it MUST be made at a fairly low level to prevent damage to the speakers.

Common causes of vibrations in the NEXT-PROAUDIO LA122 include loose screws, a front grille that is poorly positioned on its quick release fixings, or internal wiring/absorbing material contacting the loudspeaker diaphragm.

The NEXT-PROAUDIO LA122 incorporates a specialized 12 inch low frequency transducer with a 75mm voice coil and a neodymium magnet motor assembly.

Ensure that the NEXT-PROAUDIO LA122 is connected correctly and that it is not phase reversed following any inspection, test, or repair.

The rigging system for the NEXT-PROAUDIO LA122 is designed to be simple and intuitive, using supplied lock pins to secure the articulated joints.

Yes, but you must be careful; do not stack speakers too high, especially outdoors where winds could topple the stack, and ensure the structure can withstand the weight of the complete stack.