Beschrijving
MARA-SUB is a self-powered cardioid subwoofer system that incorporates a front 21” speaker and a rear 18” speaker, both with a 4” voice coil, in a bass-reflex configuration. The rear 18” speaker creates the cardioid dispersion pattern needed to compensate for unwanted energy at the rear.
The Class D amplifier of the MARA-SUB has 4 bridged channels, providing power to both the front 21” speaker and the rear cardioid 18” speaker. The switched-mode power supply features power factor correction, reducing power consumption and improving reliability and consistency under all operating conditions. The built-in DSP optimizes the signal parameters for the speakers, allowing compensation of 14 dB of rear energy in the range of 32 Hz – 125 Hz.
The enclosure design adheres to DAS’s strict standards regarding the use of birch plywood and durable ISO-flexTM exterior protection. The MARA-SUB features the necessary rigging system to fly together with the MARA systems using a single support. The metal grilles include acoustically transparent and moisture-repellent fabric. Recessed handles are located on each side of the enclosure.
| Performance | |
| Frequency Range (-10 dB) | 32 Hz – 125 Hz |
| Maximum Linear SPL1 | 137 dB |
| Maximum SPL2 | 141 dB |
| 1. Measured Maximum Linear SPL at 1m according to AES75 standard using 18dB crest factor M-Noise. 2. Measured Maximum SPL at 1m using burst noise. |
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| Electronics and Connectors | |
| Nominal Amplifier Power (continuous) | 2400 W |
| Nominal Amplifier Power (peak) | 4800 W |
| Nominal Amplifier Power LF (continuous) | 2 x 1200 W |
| Nominal Amplifier Power LF (peak) | 2 x 2400 W |
| Input Type | Balanced Analog |
| Input Impeadance | 20 kohms |
| Input Sensitivity | 6.2 V (+18 dBu) |
| Audio Signal Input Connector | 1 x Female XLR |
| Audio Signal Loop Thru Connector | 1 x Male XLR |
| Audio/Data Input Connector | etherCON |
| Control | ALMA |
| Audio + Data Loop Thru Connector | etherCON |
| AC Output Connector | powerCON TRUE1 |
| Current Draw 230 V / 115 V | 6.5 /13A |
| Sampling Rate | 96kHz |
| Enclosure | |
| Enclosure Construction | Birch Plywood |
| Enclosure Geometry | Rectangular |
| Rigging | Captive Rigging System |
| Finish | ISO-flex Paint |
| Color | Black |
| IP Rating | IP43 |
| Dimensions ( H x W x D ) | 605 x 1.070 x 790 mm 23,8 x 42,0 x 31,0 in |
| Net Weight | 107,0 kg ( 235,5 lb ) |
| Components | |
| LF Driver | 21LFN |
| LF Cardioid Driver | 18UXN |
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