13
DEUTSCH
Item description:
LDIPA424T
LDIPA412T
Output power
(1 kHz at 8 Ohm, bridge):
2 x 490 W (1.5 second sine burst)
2 x 235 W (1.5 second sine burst)
Output power
(1 kHz at 100 V/70 V):
4 x 240 W, transformer-coupled output
4 x 120 W, transformer-coupled output
Protection circuits:
Audio limiter, temperature limiter, HPF (High-Z), HF protection, overheating, short circuit, direct current protection
Minimum load impedance
per channel:
Low-Z: 4 Ohm single-ended, 8 Ohm Bridge
70V: 21 Ohm
100V: 42 Ohm
Low-Z: 4 Ohm single-ended, 8 Ohm Bridge
70V: 42 Ohm
100V: 84 Ohm
Performance specifications
Nominal input sensitivity:
+5 dBu (Sine wave, 1 kHz, max. gain)
Nominal input clipping:
19 dBu (Sine wave, 1 kHz)
Harmonic distortion (THD+N):
< 0.03 % (Low-Z SPK OUT, +18 dBu, 20 Hz – 20 kHz)
Intermodulation distortion
(IMD), SMPTE:
0.04% at 1 W power (Low-Z, max. gain), 0.1% at full power (-1 dB under clip) and min. load (4 Ohm), analyzer
bandwidth 90 kHz
Frequency response:
18 Hz – 22 kHz (Low-Z OUT, -3 dB)
50 Hz – 23 kHz (High-Z OUT, -3 dB)
Input impedance:
40 kOhm (symmetrical), input design instrumentation speaker
Signal-to-noise ratio:
>105 dB (Low-Z SPK OUT, +18 dBu, CH gain center (0 dB),
20 kHz bandwidth, A-rated)
>104 dB (Low-Z SPK OUT, +18 dBu, CH gain center (0 dB),
20 kHz bandwidth, A-rated)
Channel crosstalk:
83 dB at 1 kHz
Common mode rejection,
CMRR IEC:
>55 dB (1 kHz)
Gain:
-Inf to 27dB, IN-OUT, Potentiometer range: -inf to +14dB
Standby wakeup threshold
(wake up):
-45 dBu
Digital specifications
DSP:
ADAU1452 Sigma DSP
System latency:
6.2 ms
Resolution AD/DA converter:
24 Bit PCM1865 (AD), 24 Bit PCM1690 (DA)
Sampling rate AD/DA
converter:
48 kHz
Remote bus specifications, measured between REM In and SPK Out
Nominal input sensitivity:
20 dBu
Nominal input clipping:
20 dBu
Harmonic distortion (THD+N):
< 0.006 % (Low-Z SPK OUT, +18 dBu, 20 Hz – 20 kHz)
Frequency response:
20 Hz – 20 kHz (0.1 dB)
Input impedance:
50 kOhm (symmetrical)
Signal-to-noise ratio:
>105 dB (Low-Z SPK OUT, +20 dBu, 20 kHz bandwidth, A-rated)
Common mode rejection,
CMRR IEC:
> 65 dB at 1 kHz
Gain:
0 dB
Phantom power:
+48 V DC/500 mA
Protection circuits:
Resettable fuse protection (internal)
Summary of Contents for IPA 412 T
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