Dolby System 131 – Horn-Loaded Screen Channel Speaker System
Dolby System 131 – Horn-Loaded Screen Channel Speaker System is backordered and will ship as soon as it is back in stock.
Dolby System 131 – Horn-Loaded Screen Channel Speaker System
What is the Dolby System 131?
The Dolby System 131 is a horn-loaded screen channel speaker system that pairs one CS131MH mid/high speaker with one CS136LF low-frequency speaker. A dual-entrant asymmetrical horn with 2-inch compression drivers sits on a dual 15-inch LF cabinet. The system covers 31 Hz to 20 kHz with 28 Hz usable response and 134 dB maximum summed continuous SPL.
How does the Dolby System 131 work?
The CS131MH uses a dual-entrant asymmetrical horn that places its mid- and high-frequency compression drivers close together, which improves pattern control around the crossover and gives even coverage and volume shading. Coverage spans 55° at the top and 100° at the bottom horizontally, with 50° vertical. A composite-diaphragm 2-inch mid-frequency driver and an HT polymer 2-inch high-frequency driver handle the upper bands.
The CS131MH runs passively at 8 ohms (300 W @ 49 Vrms) or bi-amped with separate MF and HF channels. The CS136LF carries two 15-inch woofers rated at 1400 W @ 74.8 Vrms and wires at 4 ohms or 8 ohms through its flip-card input. Spring terminal blocks on the advanced input plates allow tool-free connection, and the preassembled horn simplifies setup.
Intuitive tilt and pan mechanisms aim the horn at the seating area. Pair the System 131 with a Dolby CP950A and Dolby Multichannel Amplifiers such as the DMA32301.
What are the key features of the Dolby System 131?
- Dual-entrant asymmetrical horn — close driver spacing improves pattern control and coverage consistency.
- 2-inch compression drivers — a composite MF diaphragm and HT polymer HF diaphragm deliver clear mids and highs.
- Passive or bi-amp mid/high — the CS131MH runs from one channel or two.
- Dual 15-inch CS136LF — 1400 W handling with 28 Hz usable LF response.
- Preassembled horn — simplifies setup on site.
- Tilt and pan aiming — intuitive mechanisms set the horn angle quickly.
Where is the Dolby System 131 typically used?
- Cinema auditorium (medium to large)
- Screening room
- Auditorium
- House of worship
Technical Specifications
| Components | (1) CS131MH mid/high, (1) CS136LF low-frequency |
| Frequency range | 31 Hz - 20 kHz |
| Usable LF response | 28 Hz |
| Coverage window (asymmetrical) | 55° top H, 100° bottom H, 50° V |
| Rated impedance | CS131MH: 8 Ohms passive, MF 8 / HF 8 Ohms bi-amp; CS136LF: 4 Ohms / 8 Ohms independent |
| Sensitivity @ 1 W | CS131MH: 103 dB passive, MF 109 / HF 105 dB bi-amp; CS136LF: 102 dB |
| Power handling | CS131MH: 300 W @ 49 Vrms passive; CS136LF: 1400 W @ 74.8 Vrms |
| Max continuous SPL @ 1 m | CS131MH: 128 dB passive / 130 dB bi-amp; CS136LF: 133 dB; system summed: 134 dB |
| Transducers | LF 15" x 2; MF 2" composite; HF 2" HT polymer |
| Input | Spring terminal block (advanced input plate w/ flip card) |
| Enclosure | Wood |
| Accessories | 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) | 207 lb (93.8 kg) |
Frequently Asked Questions
What makes up the System 131?
One CS131MH mid/high horn speaker and one CS136LF low-frequency speaker. Both are also listed by Dolby as individual products.
Is the System 131 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?
At least two: one for the CS131MH in passive mode and one for the CS136LF in parallel mode. Bi-amping the CS131MH or splitting the CS136LF adds channels.
How does it compare with System 133?
Both use the CS136LF. System 133 swaps in the CS136MH horn with a ring radiator MF driver for 136 dB summed output; System 131 uses the CS131MH for 134 dB.
What warranty and support are available?
The System 131 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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