Meyer Sound UP-4Slim 2x4" 3-Way Active Speaker, M8, 5-Pin Input (Weather-Resistant) - 09.274.001.02 is backordered and will ship as soon as it is back in stock.
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Product Overview
The Meyer Sound UP-4slim Weather-Resistant is an ultracompact, self-powered installation loudspeaker that combines a slim aluminum enclosure with weather protection for exposed and outdoor fixed installations. It uses IntelligentDC technology to receive 48 V DC power and balanced audio over a single Phoenix 5-pin connector, eliminating AC conduit while preserving self-powered performance. Three channels of class D amplification drive two 4-inch cone transducers and a 1-inch metal dome tweeter for high SPL, low distortion, and uniform 100° by 100° coverage. With a properly installed rain hood it carries an IPx5 rating, making it well suited to covered outdoor frontfill, fill, and vocal reinforcement.
Product Description

The UP-4slim pairs two 4-inch low-frequency cone drivers with a 1-inch metal dome tweeter on a constant-directivity horn, with the woofers working in parallel at low frequencies and one rolling off higher up to maintain constant directivity through the crossover region. A three-channel class D amplifier with integral digital signal processing provides the flat frequency and phase response characteristic of Meyer Sound IntelligentDC loudspeakers, delivering a 65 Hz to 18 kHz operating range and 116.5 dB linear peak SPL. This weather-protected version is rated IPx5 with a properly installed rain hood, and its amplifier stores DC power and tolerates voltage drops so composite cables such as Belden 1502 can carry both power and audio up to 150 feet with about 1 dB of peak SPL loss using 18 AWG wire. It requires a Meyer Sound IntelligentDC external power supply such as the MPS-482HP or MPS-488X. For a wider-coverage two-way alternative, see the Meyer Sound UPM-1XP, and add the Meyer Sound 750-LFC subwoofer for full-range output. Explore the full Meyer Sound collection at Creation Networks.
Key Features
- Weather Protection — Rated IPx5 with a properly installed rain hood for covered outdoor and exposed fixed installations.
- Slim Aluminum Enclosure — The box-shaped aluminum cabinet measures just 4.29 inches wide and weighs 14 lb for discreet integration.
- IntelligentDC Technology — A single Phoenix 5-pin cable delivers both 48 V DC power and balanced audio, removing the need for AC conduit at each loudspeaker.
- Three-Channel Amplification — An integrated class D amplifier with 500 W peak output and advanced digital signal processing drives each transducer on its own channel.
- Two 4-Inch Drivers and Metal Dome Tweeter — Two 4-inch cone transducers and a 1-inch metal dome tweeter deliver a smooth, wide-band response with low distortion.
- Constant-Directivity Crossover — A unique crossover design rolls one woofer off at higher frequencies to eliminate comb filtering through the crossover region.
- Wide Symmetrical Coverage — Matched 100° horizontal and 100° vertical coverage allows fewer loudspeakers to cover larger areas.
- M8 Rigging Points — Top and bottom aluminum plates with M8 threads accept the optional MUB-UP-4slim bracket and MYA-UP-4slim yoke.
Typical Applications
- House of Worship — Provides vocal reinforcement and frontfill for covered outdoor courtyards and exposed worship areas with weather protection.
- Auditorium — Serves as frontfill or fill in venues with exposed or semi-outdoor seating where a slim, protected cabinet is needed.
- Government Space — Delivers clear voice reinforcement at exposed ceremonial and assembly areas with centralized power supplies.
- Multi-Purpose Room — Supports flexible indoor and covered-outdoor events requiring a compact, weather-protected loudspeaker.
Technical Specifications
| Operating Frequency Range | 65 Hz – 18 kHz |
| Frequency Response | 70 Hz – 18 kHz ±4 dB |
| Phase Response | 102 Hz – 18 kHz ±45° |
| Linear Peak SPL | 116.5 dB with crest factor >16.5 dB (M-noise) |
| Coverage | 100° horizontal x 100° vertical |
| Low Frequency | Two 4-inch cone drivers; 4 Ω nominal impedance |
| High Frequency | One 1-inch metal dome tweeter; 8 Ω nominal impedance |
| Amplifier Type | 3-channel, class D with integral digital signal processing |
| Total Output Power | 500 W peak |
| THD, IM, TIM | < 0.02% |
| Audio Input | Differential, electronically balanced; 10 kΩ input impedance |
| Connector | Phoenix 5-pin male (two pins DC power, three pins balanced audio) |
| DC Power | 48 V DC; Meyer Sound IntelligentDC external power supply required |
| IP Rating | Weather-protected version rated IPx5 with properly installed rain hood |
| Dimensions | W: 4.29 in (109 mm) x H: 15.90 in (404 mm) x D: 5.69 in (144 mm) |
| Weight | 14 lb (6.35 kg) |
| Enclosure | Aluminum with slightly textured black finish |
| Rigging | Top and bottom aluminum plates with M8 threads |
Specifications sourced from Meyer Sound. Subject to change without notice.
Competitor Comparison
| Criteria | Meyer Sound UP-4slim WR | L-Acoustics 5XT | d&b E4 |
| Amplification | The UP-4slim is self-powered with a three-channel class D amplifier integrated into the cabinet. | The 5XT is a passive coaxial loudspeaker requiring an external L-Acoustics amplified controller. | The E4 is a passive loudspeaker driven by an external d&b amplifier. |
| Weather Rating | This version is rated IPx5 with a properly installed rain hood for exposed installs. | The standard 5XT requires the dedicated outdoor variant for weather exposure. | The standard E4 requires additional protection for outdoor use. |
| Driver Configuration | It uses two 4-inch cone drivers and a 1-inch metal dome tweeter in a three-way design. | It uses a single 5-inch coaxial transducer. | It uses a 4-inch driver with a 0.75-inch high-frequency exit. |
| Power and Audio Delivery | IntelligentDC carries 48 V DC power and balanced audio over a single cable. | It connects via speaker-level cabling from the controller. | It connects via speaker-level cabling from the amplifier. |
| Enclosure | The slim aluminum cabinet is 4.29 inches wide for discreet architectural integration. | The compact polymer enclosure is wider relative to its coaxial driver. | The molded enclosure is compact but not designed as an ultra-slim profile. |
| Onboard Processing | Equalization, phase correction, and driver protection are built into the loudspeaker. | Processing is handled externally in the amplified controller. | Processing resides in the external d&b amplifier. |
Frequently Asked Questions
What is the weather rating of this model?
The weather-protected UP-4slim is rated IPx5 when a rain hood is properly installed, as described in the Meyer Sound UP-4slim Operating Instructions.
Does it need a separate power supply?
Yes. It requires a Meyer Sound IntelligentDC external power supply such as the MPS-482HP or MPS-488X.
What connector does it use?
It uses a Phoenix 5-pin male connector that carries both 48 V DC power and balanced audio over a single cable.
Can it be extended to full range?
Yes. Pairing the UP-4slim with a Meyer Sound subwoofer such as the 750-LFC adds low-frequency extension for a full-range system.
What warranty applies?
This product is covered under Meyer Sound's standard product warranty. For details, please contact Creation Networks.
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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