Altec Lansing MRII542
A lightweight manta ray horn using FRP construction, designed for use with 288, 290, or 291 drivers
Overview
The Altec Lansing MRII542 is a manta ray horn—also referred to as a mantalehorn—developed as part of the MRII series. It inherits the core acoustic performance of the MR42A while being miniaturized and lightweight. Designed for professional audio applications, the MRII542 provides controlled directivity across a broad frequency range and pairs specifically with Altec drivers 288, 290, or 291. It requires no separate throat component, integrating directly with compatible drivers.
Specifications
| Type | Manta ray Rehhorn |
| Directional property | 40 ゜ x20 ゜ |
| Crossover frequency | 500Hz |
| Applicable throat | No throat required |
| Accessories | Horn Mounting Bracket (Sold Separately) |
| Compatible Driver | 288, 290, 291 |
| Power level (for driver 288) | 114dB/W/m, 126dB/15W/m |
| Power level (for driver 290) | 112dB/W/m, 132dB/100W/m |
| Power level (for driver 291) | 113dB/W/m, 129dB/40W/m |
| External Dimensions (without Screwdriver) | Width 532 x Height 367 x Depth 736 mm |
| Weight | 6.0kg |
Design
The MRII542 uses lightweight and robust FRP (fiberglass-reinforced plastic) for its horn body, contributing to its reduced size and weight while maintaining structural integrity. It extends directional control from 500 Hz up to 16 kHz, offering improved high-frequency dispersion over earlier designs. As part of the MRII series, it was engineered to deliver the performance characteristics of the larger MR42A in a more compact form.
Product Family
The MRII542 belongs to the MRII series of horns and directly inherits the fundamental performance traits of the MR42A. It is designed to work within Altec Lansing's modular driver-horn system, specifically pairing with drivers 288, 290, and 291.
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