- Modular scalable low-mid array system, with multiple units flown or stacked above each other
- Neodymium drivers for excellent performance-to-weight ratio
- SIS pre-wired for very high damping and further reduced distortion (with ALC)
- Passive filtering for easy operation and economical powering
- Durotect™ scratch-resistant coating
Description
 |
The QM18 is a modular, limited bandwidth loudspeaker to be used as vertical low-mid array, either in stacked or flown configuration, for both permanent and (limited) portable installations. It is designed as low-mid extension of a QR-array.
The QM18 “array in-fill” module is applied in a multiple QR-array, where the direct HF reproduction/projection of a QR is not required, but where an uninterrupted LMF line-source array is desirable for extended frequency control. The tightly spaced mid-bass transducers are fully compliant with the laws of line-array behaviour. The Signal Integrity Sensing™ pre-wiring ensures complete cable/connector compensation between the QM18 and ALC. In this way, the ALC can be loaded down to 2 ohms, without any sacrifice on response quality (4 units QM18 parallel on one channel loads 3 ohms). Typical applications for the QM-systems include “array in-fill” to a QR main system for theatre, PA system in “acoustically challenging rooms”, as well as high power side-fill stage monitoring. For full system performance, the QM18 needs to be driven by an ALC controller-amplifier. Driven by the ALC, the QM18 delivers maximum sound quality with inaudible (power and excursion) protection (SDP circuit). |
Technical Specifications
| Frequency Response | |
| +/- 3 dB | 74 Hz – 20.000 Hz |
| +/- 10 dB | 53 Hz – |
| Sensitivity (SPL 1W/M) | 97 dB |
| Nominal Impedance | 12 ohms |
| Maximum RMS power | 390 W |
| Maximum peak power | 1500 W |
| SPL program/peak (nom.) | 123dB / 129dB |
| Dispersion H x V (array) | 90° x depending on array length |
Physical Specifications
| System | limited bandwidth |
| Filtering | passive |
| Drivers LF | 3 x AND65/4 neodymium 6.5″, vented |
| Cross-over frequency | 1000 Hz |
| Connectors | 2 x Speakon NL4 input / link |
| Physical dimensions | mm |
| Height | 506 |
| Width | 367 |
| Depth | 237 |
| Weight (approx.) | 14kg |
| Warranty | 6 years limited |