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.
Q Series Stereo Power Amplifiers
172.051UK
Q240
Stereo workhorse power amplifiers with multiple input and output connection options. Designed for accurate and reliable service for venues, DJs and performers.
- 19" rack-mountable (2U)
- 6.3mm jack or RCA inputs
- SPK, 6.3mm jack or 4mm post outputs
Q Series Stereo Power Amplifiers
Stereo workhorse power amplifiers with multiple input and output connection options. Designed for accurate and reliable service for venues, DJs and performers.
- 19" rack-mountable (2U)
- 6.3mm jack or RCA inputs
- SPK, 6.3mm jack or 4mm post outputs
- Fan cooled
- Power supply 230Vac, 50Hz (IEC)
- Frequency response 20Hz - 20kHz
- Input connectors 6.3mm jack, RCA (L+R)
- Input sensitivity 775mV, 10k Ohms
- S/N ratio >98dB
- THD <0.5%
- Output connectors 6.3mm jack, SPK, 4mm binding posts (L+R)
Versions
| 172.051UK | 172.052UK | 172.054UK | 172.055UK | |
|---|---|---|---|---|
| Fuse rating | T2A (240V) / T4A (110V) | T5A (240V) / T10A (110V) | T5A (240V) / T10A (110V) | T5A (240V) / T10A (110V) |
| Power max. : 4 Ohms | 2 x 120W | 2 x 240W | 2 x 300W | 2 x 500W |
| Power rms : 4 Ohms | 2 x 60W | 2 x 120W | 2 x 150W | 2 x 250W |
| Power rms : 8 Ohms | 2 x 40W | 2 x 80W | 2 x 100W | 2 x 160W |
| Dimensions | 482 x 240 x 88mm (2U) | 482 x 300 x 88mm (2U) | 482 x 300 x 88mm (2U) | 482 x 380 x 88mm (2U) |
| Weight | 5.2kg | 6.45kg | 7.35kg | 9kg |
Support : articles
Power Ratings: RMS vs Max vs Peak
A summary explaining the key differences between RMS, Max and Peak power ratings.
Downloads
Instruction manual
For 172.051UK (646KB)
For 172.051UK (646KB)
UK Declaration of conformity
For 172.051UK (250KB)
For 172.051UK (250KB)
EU Declaration of conformity
For 172.051UK (239KB)
For 172.051UK (239KB)
