Proceed PDP

1 9 9 0 1990
1 9 9 2 1992

The PCP is the digital-to-analogue version of the PCD.

The main ICs are an NPC SM5813APT (8x digital filter), a Yamaha YM3623B and fast AD845 Analog Devices op'amps for the analogue outputs. The PCP works sans noise-shaping.

There are two versions of the PCP :
The first version of it had same outputs as the PCD, three 75 Ohm coaxial digital inputs, an AES/EBU digital input and a coaxial digital output ; the second version replaced one coax input with a TOS plastic optical and another with an ST glass-fiber optical.

The coaxial output was also finetuned along the way with a high-frequency filter and mostly its output level boosted to 5V.
Analogue outputs are very low at 1 Ohm impedance.

Replaced by the PDP 3 in 1992.


The owner's manual of the PDP 3 can still be downloaded off Madrigal's (dead) website.

Proceed PDP, image 1 Proceed PDP, image 2 Proceed PDP, image 3
Proceed PDP specifications
Title Value
Frequency response : 10Hz...20Khz (+0 / -0,2dB)
THD : 0,004% (1Khz, 0dB)
IMD : 0,009% (SMPTE)
Dynamic range : 98dB
S/N ratio : 105dB
Channel separation : 120dB
D/A conversion : 2x Burr Brown PCM58P 18bit
Digital filtering : 8x oversampling digital filter
Analogue filtering : phase-linear up to 40Khz
Low-level linearity : unmeasurable to below -70dB
+1.7db below -90dB
(undithered, ref. 0dB @ 1Khz)
Analogue output impedance: < 1 Ohm
Digital output level : 5V S/P DIF
Dimensions : 21,4 x 22,7 x 33,7cm
Weight : 7kg.
List price : 4500DM (PCD, 1991)
4500DM (PDP, 1991)
page online since : april 2009
page updated : not yet
page type : LGT / KNB
page weight : 196.49 Kb / 0 b
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