Amplifier Classes
There have been many developments in audio electronics, resulting in different amplifier circuit designs. Such designs can be divided into classes, of which 4 main types are relevant to audio – A, AB, H and D.
D-series Quad Power Amplifiers
172.142UK
D4200
Quad digital power amplifier in a lightweight 1U rack-mountable format. An energy-efficient switch-mode power section and class-D amplifiication circuit delivers accurate power-on-demand to four in...
- Switchable bridge or parallel mono modes
- Switchable high and low pass filters
- Configurable as a quad, stereo or 2.1 system
D-series Quad Power Amplifiers
Quad digital power amplifier in a lightweight 1U rack-mountable format. An energy-efficient switch-mode power section and class-D amplifiication circuit delivers accurate power-on-demand to four independent speaker outputs. Proprietary cool guide technology provides stable temperature management for dependable operation. Each pair of output channels can be separately parallel switched or bridged as a full or part stereo amplifier configuration. For channel A, there is a switchable 120Hz low-pass filter for use with subwoofers and a channels C and D have a switchable stereo pair of 120Hz high pass filters to effectively focus power in full-range cabs operating as mid-tops in conjunction with sub-woofers. For permanent or mobile installations, the D-series offers an invaluable and flexible problem solver for audio designers and sound engineers.
- Switchable bridge or parallel mono modes
- Switchable high and low pass filters
- Configurable as a quad, stereo or 2.1 system
- Fully balanced audio signal path
- Full audio and power protection with peak limiter
- Power supply 220-240Vac, 50/60Hz (IEC)
- Modes 2 x Stereo, Parallel (mono), Bridge (mono)
- Input sensitivity 0dB = 0.775Vrms
- Crossover Input A 120Hz LPF and C+D 120Hz HPF (all switchable)
- Input connections 4 x XLR female
- Sound output 4 x SPK connectors
- Dimensions 482 x 248 x 44mm (without feet)
Versions
| 172.142UK | 172.144UK | |
|---|---|---|
| Output : rms @ 4 Ohms | 4 x 200W | 4 x 350W |
| Output : rms @ 8 Ohms | 4 x 100W | 4 x 200W |
| Bridge power @ 8 Ohms | 2 x 400W (both pairs of channels bridged) | 2 x 700W (both pairs of channels bridged) |
| Weight | 4.393kg | 5.083kg |
Support : articles
Power Ratings: RMS vs Max vs Peak
A summary explaining the key differences between RMS, Max and Peak power ratings.
In the box
The box for this item contains :
- D-series quad power amplifier
- IEC power lead(s)
Downloads
Instruction manual
For 172.142UK (297KB)
For 172.142UK (297KB)
