Dolby System 133 – Horn-Loaded Screen Channel Speaker System
Dolby System 133 – Horn-Loaded Screen Channel Speaker System is backordered and will ship as soon as it is back in stock.
Dolby System 133 – Horn-Loaded Screen Channel Speaker System
What is the Dolby System 133?
The Dolby System 133 is a horn-loaded screen channel speaker system made up of one CS136MH mid/high speaker and one CS136LF low-frequency speaker. It uses Dolby's proprietary dual-entrant asymmetrical horn and custom compression-driver technology for consistent coverage and uniform volume shading. The system covers 31 Hz to 20 kHz with 28 Hz usable response and 136 dB maximum summed continuous SPL.
How does the Dolby System 133 work?
The CS136MH horn pairs a custom ring radiator mid-frequency compression driver, which covers the primary vocal range of 400 Hz to 4 kHz, with a titanium-diaphragm high-frequency compression driver. The ring radiator allows a lower crossover frequency, improving intelligibility and power handling. The dual-entrant horn keeps the drivers close together for pattern control, spanning 55° at the top and 100° at the bottom horizontally with 50° vertical.
Below the horn, the CS136LF carries two 15-inch woofers rated at 1400 W @ 74.8 Vrms in a braced wood enclosure. The advanced input plate's flip-card PCB selects tri-amp or bi-amp system configurations, and the spring-loaded terminal blocks allow tool-free connection. Laser aiming sights in the horn work with a common laser pointer and the tilt and pan mechanisms for fast, accurate aiming.
The BKT.136 tie-plate kit ships with the CS136MH, and the BKT.FLR floor bracket (sold separately) anchors the stack. Drive the system from a Dolby CP950A with Dolby Multichannel Amplifiers such as the DMA32301.
What are the key features of the Dolby System 133?
- Dual-entrant asymmetrical horn — even coverage and volume shading for the entire auditorium.
- Ring radiator MF driver — covers 400 Hz to 4 kHz for clearer dialog and higher power handling.
- Tri-amp or bi-amp configuration — the flip-card input plate selects the amplifier layout.
- Dual 15-inch CS136LF — 1400 W handling with extended low-frequency output to 28 Hz usable.
- Laser aiming sights — tilt and pan mechanisms with laser sights speed accurate aiming.
- Preassembled horn — simpler setup and reduced freight costs.
Where is the Dolby System 133 typically used?
- Cinema auditorium (medium to large)
- Premium large-format auditorium
- Screening room
- Auditorium
- House of worship
Technical Specifications
| Components | (1) CS136MH mid/high, (1) CS136LF low-frequency |
| Frequency range | 31 Hz - 20 kHz |
| Usable LF response | 28 Hz |
| Coverage window | CS136MH: 55° top H, 100° bottom H, 50° V; CS136LF: 120° H, 80° V |
| Rated impedance | CS136MH: 8 Ohms passive, MF 8 / HF 8 Ohms bi-amp; CS136LF: 4 Ohms / 8 Ohms (bi-wire) |
| Sensitivity @ 1 W | CS136MH: 104 dB passive, MF 112 / HF 106 dB bi-amp; CS136LF: 102 dB |
| Power handling | CS136MH: 500 W @ 63.2 Vrms passive; CS136LF: 1400 W @ 74.8 Vrms |
| Max continuous SPL @ 1 m | CS136MH: 131 dB passive / 133 dB bi-amp; CS136LF: 133 dB; system summed: 136 dB |
| Input | Spring terminal block (advanced input plate w/ flip card) |
| Enclosure | Wood |
| Accessories | BKT.136 tie-plate kit (included with CS136MH); BKT.FLR floor bracket kit (sold separately) |
| Dimensions | 63.56" H x 30.22" W x 23.21" D (161.5 x 76.8 x 59 cm) |
| Weight (system stack) | 203.5 lb (92.30 kg) |
Frequently Asked Questions
What makes up the System 133?
One CS136MH mid/high horn speaker and one CS136LF low-frequency speaker, both also available individually.
Is the System 133 compatible with Dolby Atmos and the CP950A?
Yes. It is part of Dolby's immersive screen speaker line and runs from processors such as the CP950A or CP950 with Dolby Multichannel Amplifiers.
How many amplifier channels does it need?
The flip-card input plate supports bi-amp (CS136MH passive plus CS136LF) or tri-amp (CS136MH MF and HF plus CS136LF) configurations.
How does System 133 differ from System 136?
System 136 adds a second CS136LF below the horn for 139 dB summed output and a 96.83-inch stack height, aimed at the largest rooms. System 133 uses one CS136LF for 136 dB.
What warranty and support are available?
The System 133 carries Dolby's manufacturer warranty, confirmed with your quote. Creation Networks designs, installs and tunes Dolby screen systems; see the Dolby Professional collection and request a quote.
At Creation 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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