The BLD has all components and function necessary for generating bass lead and drum sounds with focus on bass drum sounds. The BLD contain main sound generator (OSCILLATOR) and noise generator and modifiers such as low pass filter, amplifier and two transient (contour) generators.

Oscillator has two manual pitch controllers (FINE, COARSE) and two inputs for controlling the pitch by external signals: FM1 (levelled, bipolar pre-patched to transient generator AR) and FM2 (calibrated to 1 Volt/octave).
Waveforms and mix between shapes is controlled manually from triangle, mix between triangle and pulse, pulse, mix between pulse and saw tooth and saw tooth). Oscillator level is controlled manually from 0 thru nominal signal strength to saturated (curved, for more punch). Pulse width is controlled manually and by an external signal (PWM).

LOW PASS FILTER has two audio inputs marked OSCILLATOR LEVEL and NOISE LEVEL, The CUTOFF frequency is controlled manually, transient generators AR and AHR and by CUTOFF pre-patched to FM2 CV input.

NOISE GENERATOR is connected to the low pass filter and to the amplifier (NOISE LEVEL). The noise generator can be routed in to the amplifier (PRE) or directly to the output AMP (POST). The noise generators level is also controlled by pre-patched AR generator thru input NOISE LEVEL.

AR and AHR transient generators are activated manually by the push button TRIG and/or by an external signal(input TRIG). Attack, Hold and Release are manually controlled and by an external signals connected to inputs A1, R1 (AR) and A1, HOLD and R2 (AHR).

AMPLIFIERs gain is controlled by mix of AR and AHR and by an external signal connected to the input VELOCITY.

Outputs
AMP - main audio output
LPF - direct output from the filter
AR and AHR - transient generators

Sound sample >bld 1

Sound sample >bld 2

Sound sample >bld 3

Sound sample >bld 4

3U Eurorack module, 24HP wide, 25mm deep
Dimensions - 128.4mm (H), 121mm (W)
Current draw- 60mA

here are more information from the manufacture available

Cwejman seem to be new in the industry, but they built their first synthesizer back in 1970. After a long absence, they decided to bring out a new product, which became the high-praised semi-modular S1. This unit along with the S2 established Cwejman in the superior class of synthesizer manufacturers. The modular series is the optimized result of their inventions made with the S1 and S2 units, so You have now more possibilities and individual solutions.

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Last Edit: 2010-03-22