 By combining analog audio circuitry with digital control the SDAI 2175 integrated amplifier offers very high performance and amazing value for money.
The open natural sound reproduction and massive power output for impressive grip and drive simply makes this the best integrated amplifier in it's class!
The compact SDAI 2175 integrated amplifier is a wolf in sheep's clothing - delivering massive 2 x 200W in a very refined way with an open and natural sound. This is made possible by the numerous technical refinements throughout the amplifier, and optimum performance in the input section. The inputs are selected through the highest quality low-loss relays with double gold-plated contacts - relays of a quality normally only used in the highest performing measuring equipment and ensure complete isolation between inputs and a loss-less selection of sources.
Impressing everybody from the critical reviewer to the audio enthusiast the SDAI 2175 has become a winner all over the world.
 "Semi Digital" is in Lyngdorf terms a "digital" switching amplifier driven by an analog input.
In principle, the output stage of most switching amplifiers has the same working principle.
PWM = Pulse Width Modulation is simply a matter of variable open/close time of the transistors.
Simplified, you can compare the transistors in the output stage to two switches.
Read more...
The volume is controlled by a high-precision, digitally-controlled analog attenuator, allowing 0.1 dB steps over a 100dB range as with other fully digital Lyngdorf products. The balance between channels can be programmed to reflect different left-to-right speaker sensitivities. That balance can be maintained from the highest levels all the way down to absolute silence.
The amplifier is fully balanced from input to output if driven with a balanced source, and if not driven with a balanced source, the signal is immediately transformed to a balanced signal.
The fully balanced design gives clear advantages regarding hum and noise suppression - also from other sources.
Read more...
| PARAMETER |
VALUE |
NOTE
|
| Output power, 4 ohms |
2 x 375 Watt |
1KHz, 0.1% THD+N |
| Output power, 8 ohms |
2 x 200 Watt |
1KHz, 0.1% THD+N |
| Nominal load impedance |
4 - 8 ohms |
It is safe to operate the amplifier with no load |
| Frequency response |
0.3Hz-33KHz |
-3dB points, 8ohms load. |
| Frequency response |
20Hz-20KHz |
-0dB/+0.2dB 8ohms load |
| Output impedance |
0.035 Ohms |
20Hz-1KHz |
| Output impedance |
0.4 Ohms |
20KHz |
| THD+N |
0.004% |
@1W/8 ohms A-wgt. |
| THD+N |
0.006% |
@1 W/4 ohms A-wgt. |
| THD+N |
0.01% |
@100 W/8 ohms A-wgt. |
| THD+N |
0.07% |
@300 W/4 ohms A-wgt. |
| S/N ratio |
113dB |
A-wgt. Ref. 200 /8 ohms |
| Dynamic range |
|
A-wgt. Ref. 200 W/8 ohms |
| Channel separation |
84 dB |
1 KHz, 200 W/8 ohms |
| Peak output current |
+/-40A |
|
| Mains voltage range |
100-120V AC / 50-60Hz |
115V version |
| Mains voltage range |
200-240V AC / 50-60Hz |
230V version |
| Power consuption |
1.5W |
Standby mode |
| Power consumption |
35W |
Operate mode, no output |
| Power consumption |
116W |
2 x 37.5W / 4 Ohms |
| Power consumption |
820W |
2 x 300W / 4 Ohms |
| Width |
450 mm / 17.72in |
|
| Depth |
355 mm / 13.98in |
Incl. loudspeaker connectors |
| Height |
100 mm / 3.94in |
Incl. feet |
| Net weight |
13 Kg / 28.66lb |
|
| Shipping weight |
16 Kg / 35.27lb |
|
Firmware
PC Pack SDAI control software - Windows XP compatible
Serial Load (used for updating product firmware) - Windows Vista compatible
Owners manual
|
|
June
2010
Audio
& Cinema em Casa, Portugal
SDAI 2175
“the
sound is crystal clear, as if nothing existed between the CD player and
the speakers”
“Control capacity abounds; this is
clear
on the lower registers, where one can find a mix of qualities
seldom
found together. The woofers display an exuberant articulation,
working
at speeds one would expect from a midrange, and the result is a
bass
deep and musical, but also dry and controlled”
“if the Lyngdorf is satisfying at
all
volume levels, it is impressive to discover how loud it can go
without
ever losing control”
Download
article:
SDAI2175 review
in
June 2010 issue of Audio &
Cinema
em Casa (Portugal)
|
|
|
December 2006
Hifi4all.dk
SDAI 2175, Denmark
Download article:
Hifi4all - Danish and English summary at the end |
|
|
November 2006
SDAI 2175
HiFi-World, UK
Download article:
HiFi-World |
|
|
April 2005
SDAI 2175
Audioforum.be, Belgium
Link to article:
Audioforum.be |
|
|
December 2004
SDAI 2175
Stereoplay, Germany
Download article:
Stereoplay - German |
|
|
|
|
