Arcam AVP700 Controller and P1000 Multichannel Amp Measurements
(The results shown are for the left channel. Except as noted, the measurements were made using the amplifier's balanced inputs).
From its single-ended RCA inputs to its speaker outputs, the P1000 amplifier measured–0.40dB at 10 Hz, -0.01dB at 20 Hz, -0.15dB at 20 kHz and –0.84dB at 50 kHz.
From its balanced XLR inputs to its speaker outputs, the amplifier measured –0.04 dB at 10 Hz, -0.00dB at 20 Hz, -0.16dB at 20 kHz and –0.88dB at 50 kHz.
The P1000's gain measured (balanced results in parenthesis) +31.29dB (25.35dB) with the Gain switch set to "A," +28.84 (22.89) in "B," and +26.09 (20.15) in "C." The amplifier's
S/N ratio, A-weighted from 10Hz – 24kHz at 1W into 8 ohms measured –100.73.dB at its single-ended input and –99.05dB at the balanced input (Gain set to "A" in both cases).
The THD+noise at 1W into 8 ohms was 0.011% at 20 Hz, 0.012% at 1 kHz and 0.010% at 20 kHz. At 2W into 4 ohms it measured 0.012% at 20 Hz, 0.012% at 1 kHz and 0.011% at 20 kHz using the balanced input.
With all 7 channels driven into 8 ohms, the P1000 clipped (1% THD+noise, to the nearest Watt) at 148 Watts per channel at 20 Hz and 173 WPC at 1 kHz. The corresponding results into 4 ohms were 193Wpc at 20 Hz and 234 Wpc at 1 kHz.
With two channels driven, the amplifier clipped (1% THD+noise) at 237 Wpc into 8 ohms and 359 Wpc into 4 ohms (at 1kHz). The main fuse blew attempting to take these measurements and had to be replaced by a larger one to obtain a reading. –TJN