A review of the RCF NX L23-A line array (module) speakers. I waited a while before posting a review of these speaker cabinets. Wanted to give them a “good run” in a few shows in order to form a more accurate review/opinion. Each cabinet (vented in front) has 1 x 12” woofer, 3 x 1” horns; DSP settings, Class-D 750 watt amplifier; power-con connectors; 100 H x 15 V degree coverage. Purchased six (6) of these cabinets along with two (2) ground stack frames. These cabinets can be flown (fly-bar is extra).
We use these cabinets for FOH mid/high and are partnered with two (2) JBL SRX 728 subs (all managed with a DBX 260). These are setup as three (3) cabinets ground stacked on each side of the stage, with the subs centered. Most shows were indoor covering about 1000 people, a couple of shows were outdoors. Events included, rock/roll, bluegrass, blues, and Asian.
The power rating of each cabinet (and as an aggregate) appeared more than adequate for the events. Plenty of highs and mid-range. At no point did the cabinets sound as if they were struggling, even during outdoor events mixing 100' out. The horizontal coverage was great, including across the upper frequency range. The RCF charts show a sharp drop around the 1K range the wider the coverage; though, this seemed innocuous during our sampling. This system did very well covering about 1000 people indoors; plenty of power, great clarity and coverage.
The “LF Shape” DSP on each speaker controls the bass response of that speaker in the array. You select the number of speakers (modules) you have in the array by selecting the correct DSP combination on each module in the array. Basically, the more modules in the array, the more the bass is rolled off . During a sound check, we tested the system without assigning the number of cabinets in the array (per side). Due to coupling, the bass and mid-range response (from ~100hz up) was very prominent. By not using the DSP functionality, there was an (obvious) increase in power usage. After setting the DSPs for the number of modules, the sound was well under control. For the higher frequencies, the “HF Boost” DSP setting (“Linear” or “Array”) bumps the higher frequencies up (on Array) a few db. With horn coupling in the array, this setting brings out the high-end. We keep this setting enabled for all events.
First, this is not really a line-array setup we use. However, the benefits from using this limited number of cabinets (and ground stacked) far exceed any single point-source cabinets we have used in our system, as well as what we have mixed on using others' gear. When ground stacking, the stage height, for most of our shows, is around 4 ½ – 5 feet, which places the top module around 7 -8 ft high. To get the full benefit of these modules, they really need to be flown. The projection of the horns (along with coupling) performs great, however, the high-end becomes attenuated to people that are sitting in the back of a room (more than ~70' away on one our events) due to people sitting in front of them and so on. The upfront and mid-range seats do very well.
The weight of a single speaker (including the frame) is ~60 lbs. One side of FOH setup, including the ground stacking frame, is a little over 200 lbs. This took some muscle (more than one person) to get the stacks on the stages. For events with very low (or no) stages, we use small scaffolds; which takes 3 people to lift and position one stack (safely) onto a scaffold.
We've been very pleased with the power, coverage, and sound quality of these speakers. The highs are prominent; the lows/mids seem solid. If we end up needing more speakers (modules) to accommodate larger shows, we will start flying them.