Overview
The Quest QX4300 is a 1RU four channel Class-D installation amplifier with 550 W peak per channel, and 280 W RMS at 8 ohm down to 240 W RMS on 100V lines. Load sensing output stages suit low impedance speakers or 70V and 100V lines, so one amp can run a pair of surface speakers in a meeting room and a 100V string of ceiling speakers in the corridor.
Every channel has volume, an 80 Hz high pass, a 100 Hz low pass, bridge mono, a limiter and auto standby with a 1 ms wake up, all on the front panel. That makes it easy to run a sub on one channel and tops on the others with no software. It is the workhorse for multi zone commercial and education sites, churches with a few rooms and larger homes.
Highlights
- 4 x 550 W peak, 4 x 280 W RMS at 8 ohm
- Load sensing for low impedance or 70/100V per channel
- Front panel volume, 80 Hz HPF and 100 Hz LPF per channel
- Bridge mono, limiter and 1 ms auto standby per channel
- Balanced Euroblock inputs and Euroblock outputs
- 1RU and 5.9 kg
- Optional Dante and AES67 input card
Specifications
| Channels | 4 |
| Peak power per channel | 550 W (8 ohm, 4 ohm, 70V, 100V) |
| RMS power per channel | 280 W (8 ohm), 260 W (4 ohm), 250 W (70V), 240 W (100V) |
| Inputs | 4 x balanced 3 pin Euroblock |
| Outputs | 4 x 2 pin Euroblock |
| Gain | 32 dB |
| Frequency response | 20 Hz to 20 kHz (±0.3 dB) |
| THD | 0.006% |
| Dynamic range | 104 dB (A-weighted) |
| Mains | 100 to 240 V universal, IEC C14 |
| Fan noise | 38 dB(A) at 1 m |
| Size and weight | 1RU, 482 x 44.5 x 344 mm, 5.9 kg |
Forefront Tip
Use the auto standby on sites where nobody remembers to switch the amps off. The amp drops to low power overnight and wakes in 1 ms when audio arrives, so the first announcement of the day is not lost. Label each channel's zone on the front panel so staff can turn the right room down.
