Operating Instructions

Meyer Sound Documentation

Operating Instructions — UP-4slim

Ultracompact Loudspeaker

In this section:

The UP-4slim ultracompact installation loudspeaker is ideally suited for applications requiring a small, slim, aesthetically pleasing cabinet that delivers high sound pressure levels with low distortion and uniform coverage. The UP-4slim offers this exceptional audio performance in a compact self-powered package with a remote power supply. As a standalone loudspeaker, the UP-4slim is appropriate for vocal reinforcement, front-fill and under balcony fill applications. The UP-4slim can be optionally paired with a subwoofer to create a full-range system.

UP-4slim UltraCompact Loudspeaker

The UP-4slim is engineered to the same award-winning standards as all Meyer Sound IntelligentDC loudspeakers. Its onboard amplification and sophisticated signal processing provide the flat frequency and phase responses for which Meyer Sound loudspeakers are known. Its drivers are designed and manufactured at the Meyer Sound factory in Berkeley, California.

The UP-4slim’s high-frequency section includes a 1-inch metal dome tweeter on a constant-directivity, high-frequency horn. The low/mid-frequency section includes two 4-inch cone transducers that work in parallel at low frequencies to deliver a combined acoustic output.

One of the drivers rolls off at higher frequencies to maintain constant directivity in the crossover region. With a smooth, consistent 100° coverage, fewer loudspeakers can cover a larger area, reducing system cost while maintaining the highest sound quality.

The UP-4slim boasts a very low distortion, wide operating frequency range (65 Hz – 18 kHz), and linear peak SPL of 116.5 dB with crest factor > 16.5 dB (measured using M-noise).

Note

Linear peak SPL is measured in free-field at 4 m, referred to 1 m. M-noise is a full bandwidth test signal (10 Hz – 22.5 kHz) developed by Meyer Sound to better measure the loudspeaker’s music performance. It has a constant instantaneous peak level in octave bands, a crest factor that increases with frequency, and a full bandwidth peak-to-RMS ratio of 18 dB. The presence of a greater-than (>) symbol with regard to crest factor indicates it may be higher depending on EQ and boundary loading.

The UP-4slim loudspeaker requires an external Meyer Sound IntelligentDC power supply (MPS-488HP or MPS-482HP). These power supplies distribute DC power and balanced audio to UP-4slim loudspeakers or other Meyer Sound IntelligentDC loudspeakers. The MPS-488HP model can also connect to Meyer Sound’s RMS remote monitoring system. Composite multi-conductor cables (e.g., Belden® 1502) can deliver both DC power and balanced audio from a single Phoenix™ 5-pin male connector.

Tip

For complete information about using the MPS-488HP or MPS-482HP external power supplies, refer to their Operating Instructions.

UP-4slim loudspeaker options include weather protection and custom color finishes for installations with specific cosmetic requirements. The top and bottom rigging plates have M8 threads to accommodate mounting options including a cradle-style yoke, screw-in pole-mount adapter, U-bracket, as shown in the figures below. Meyer Sound powder-coats the stamped-steel grille frame with a slightly textured black finish. The box-shaped vented enclosure is aluminum.