ATC - EL50 - Anniversary Special 9" 3-Way Active Tower Speaker (Pair)
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ATC - EL50 - Anniversary Special 9" 3-Way Active Tower Speaker (Pair)
The ATC EL50 Anniversary Special is a commanding 3-way active tower designed to bring studio-grade accuracy into a refined home listening environment. Celebrating ATC’s legacy, it blends precision engineering with a bold physical presence, anchored by a powerful 9-inch bass driver. Its fully active design allows each driver to operate under dedicated amplification, maintaining control and coherence even at demanding levels. The result is a presentation that feels immediate, dynamic, and remarkably true to the source.
At the core of the EL50 is ATC’s renowned approach to active loudspeaker design, where amplification is built directly into the system to match each driver’s requirements. This configuration eliminates the compromises of passive crossovers, allowing precise control over phase, timing, and driver integration for a seamless soundstage. The dedicated midrange driver handles the critical vocal band with exceptional clarity, while the high-frequency unit delivers clean, extended treble without harshness. Anchoring the system, the 9-inch bass driver provides weight and authority, producing deep, controlled low frequencies with minimal coloration. The cabinet is engineered for rigidity and resonance control, reducing unwanted vibrations that can smear detail. Combined, these elements create a speaker capable of wide dynamic swings, excellent imaging, and a neutral tonal balance that reflects true high-fidelity performance.
The EL50 stands as a purpose-built solution for listeners who value accuracy, scale, and control in equal measure. Its active architecture and carefully matched components deliver a level of precision that passive designs often struggle to match. With its ability to reproduce music with both power and nuance, it offers a compelling blend of studio insight and home listening enjoyment.
FEATURES:
- Fully active 3-way tower with dedicated amplification per driver
- Anniversary edition celebrating ATC’s engineering heritage
- 9-inch bass driver delivers deep, controlled low frequencies
- Proprietary midrange driver for exceptional vocal clarity
- Precision crossover integration for seamless driver coherence
- High-frequency driver offers clean, extended treble response
- Built-in amplification optimized for each driver’s performance
- Rigid cabinet design minimizes resonance and coloration
- Wide dynamic range with excellent transient control
- Studio-grade accuracy tailored for high-end home listening
SPECIFICATIONS:
| Low-Frequency Driver: | SB75-234SL 8 ohms |
| Midrange Driver: | SM75-150S 16 ohms |
| High-Frequency Driver: | SH25-76S 6 ohms |
| Frequency Response: | 32 Hz – 25 kHz (-6 dB anechoic) |
| Matched Response: | +/-0.5 dB |
| Crossover: | 380 Hz |
| Crossover: | 3.5 kHz |
| Maximum SPL: | 112 dB (per pair, IEC Weighted Pink Noise, 1 m, anechoic) |
| Sensitivity: | -17.5 dBu (85 dBC, @1 m, pink noise, per speaker, anechoic) |
| Connectivity: | Balanced input, rear panel mounted female XLR, pin 2 +ve |
| Impedance: | 20 k ohms |
| Input CMRR: | >80 dB (20 Hz – 10 kHz) |
| Input Sensitivity: | 2.2 dBu / 1 V or 8.2 dBu / 2 V (switched, ref. full output) |
| Crossover: | 4th Order Linkwitz Riley |
| Amplifier: | Grounded Source MOSFET, Class A/B, convection cooled (fan-less) |
| Power Handling (Low Frequency): | 200 W (8 ohms, continuous average, 0.1% THD) |
| Power Handling (Midrange): | 100 W (16 ohms, continuous average, 0.1% THD) |
| Power Handling (High Frequency): | 50 W (8 ohms, continuous average, 0.1% THD) |
| THD+N: | 0.0015% / -96 dB (1 kHz, 1 dB below rated power, 90 kHz BW) |
| Frequency Response: | 8 Hz – 190 kHz |
| Limiter: | FET momentary gain reduction, all channels |
| Construction: | Amplifier d.c. offset and over-temperature protection (rear panel LED) |
| Connectivity: | Power Trigger Input/Link: 2 × rear panel mounted, Switchcraft L712RA |
| Power Consumption (Idle): | 77 W / 105 VA |
| Power Consumption (1/8 Power): | 240 W / 315 VA |
| Power Consumption (Full Power): | 600 W / 730 VA |
| Heat Output (Idle): | 77 W / 263 BTU |
| Heat Output (1/8 Power): | 184 W / 628 BTU |
| Heat Output (Full Power): | 250 W / 853 BTU |
| Net Weight: | 139.0 lbs (63.0 kg) |
| Overall Dimensions (H × W × D): | 55.94" × 18.06" × 13.88" (1421 × 459 × 352 mm) |


