Dolby CS131MH – Dual-Entrant Horn Mid/High Screen Speaker
Dolby CS131MH – Dual-Entrant Horn Mid/High Screen Speaker is backordered and will ship as soon as it is back in stock.
Dolby CS131MH – Dual-Entrant Horn Mid/High Screen Speaker
What is the Dolby CS131MH?
The Dolby CS131MH is a horn-loaded mid/high screen channel speaker and the upper component of the Dolby System 131. It uses a dual-entrant asymmetrical horn driven by a 2-inch composite-diaphragm mid-frequency compression driver and a 2-inch HT polymer high-frequency compression driver. Mounted on a CS136LF low-frequency cabinet, it forms a screen channel for medium and large auditoriums.
How does the Dolby CS131MH work?
The dual-entrant horn lets the MF and HF drivers sit close together, which improves pattern control around the crossover frequency. Its asymmetrical pattern spans 55° at the top and 100° at the bottom horizontally, with 50° vertical, so coverage and volume shading stay even across the seating area. Frequency range is 400 Hz to 20 kHz.
The CS131MH runs in passive mode at 8 ohms, rated at 300 W @ 49 Vrms with 103 dB sensitivity and 128 dB continuous SPL at one metre. In bi-amp mode the MF and HF sections take separate 8-ohm channels (80 W and 70 W) for 130 dB continuous output. The advanced input plate's high-current, spring-loaded terminal block allows tool-free connection, and the horn ships preassembled.
Tilt and pan mechanisms speed aiming during commissioning. A typical chain is a Dolby CP950A processor feeding a Dolby Multichannel Amplifier such as the DMA32301.
What are the key features of the Dolby CS131MH?
- Dual-entrant asymmetrical horn — close driver spacing gives better pattern control and even coverage.
- 2-inch HT polymer HF driver — a quality compression driver for clear, detailed highs.
- 2-inch composite MF driver — a composite-diaphragm compression driver handles the vocal range.
- Passive or bi-amp — run from one channel or split MF and HF across two.
- Preassembled horn — simplifies setup on site.
- Tool-free input plate — high-current, spring-loaded terminals speed wiring.
Where is the Dolby CS131MH typically used?
- Cinema auditorium (medium to large)
- Screening room
- Auditorium
- House of worship
Technical Specifications
| Model | CS131MH |
| Frequency range | 400 Hz - 20 kHz |
| Coverage window (asymmetrical) | 55° top H, 100° bottom H, 50° V |
| Rated impedance | Passive: 8 Ohms; bi-amp: MF 8 Ohms / HF 8 Ohms |
| Sensitivity @ 1 W | Passive: 103 dB; bi-amp: MF 109 dB / HF 105 dB |
| Power handling | Passive: 300 W @ 49 Vrms; bi-amp: MF 80 W @ 25.3 Vrms / HF 70 W @ 23.7 Vrms |
| Power draw | Passive: 123 W; bi-amp: MF 54 W / HF 50 W |
| Max continuous SPL @ 1 m | Passive: 128 dB; bi-amp: 130 dB |
| Measured peak SPL @ 1 m | Passive: 140 dB; bi-amp: 141 dB |
| Transducers | MF 2" composite; HF 2" HT polymer |
| Input | Advanced input plate w/ high-current spring-loaded terminal block |
| Enclosure | Asymmetrical dual-entrant horn |
| Accessories | BKT.FLR floor bracket kit (sold separately) |
| Dimensions (unit) | 30.11" H x 30.22" W x 23.21" D (76.5 x 76.8 x 59 cm) |
| Weight (unit) | 52 lb (23.5 kg) |
| Weight (shipping) | 77.5 lb (35 kg) |
Frequently Asked Questions
What does the CS131MH pair with?
It sits on the Dolby CS136LF low-frequency cabinet to form the Dolby System 131 screen channel.
Is it compatible with Dolby Atmos processors?
Yes. It is part of Dolby's immersive screen speaker line and runs from processors such as the CP950A or CP950 through external amplification.
Should it be run passive or bi-amped?
Both are supported. Passive mode uses one 8-ohm channel; bi-amp mode adds a channel and raises continuous output from 128 dB to 130 dB at one metre.
How does it differ from the CS136MH?
The CS136MH uses a ring radiator MF compression driver with higher sensitivity and 500 W passive handling for Systems 133 and 136. The CS131MH is rated at 300 W passive for System 131.
What warranty and support are available?
The CS131MH carries Dolby's manufacturer warranty, confirmed with your quote. Creation Networks designs, installs and tunes Dolby screen channels; 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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