|
Model: Hermippe 12db VCF
width: 10hp Current: +20mA, -20mA SKU: BLMHRMVCF Color: Black Style: Vintage OTA analog Filter. Modes: High pass and low pass filtering Technical: JRC13700 OTA IC, saturation IC JRC 4558. What does this do? This is an analog filter with a lot of low end. The design uses a JRC 13700 OTA dual vca chip to produce 12db Low pass and 12db high pass filtering. The module can easily self oscillate. There is a trimmer to adjust how much sine wave you want. There is a 2 channel internal mixer, so that you can patch two sound sources. There is a bi polar FM input, and a 'MOD' input with level control. These are used to voltage control the Cutoff knob. The 'ping' input is a unique trigger conditioner that will send a spike to the filter. This is used to produce percussion type sounds from the output. This is used in combination with the Rez knob. The cutoff knob determines the sine wave frequency. Price: $115 |
| blm-hermippe_vcf.pdf |
|
Model: BLM 10 Stage Steiner VCF
Analog Filter Width: 10hp Current: +16mA,-15mA What does this do? This product is an analog filter that processes -5v/+5v synth level audio signals. This particular product is using a 10 stage diode ladder circuit influenced from a classic steiner filter. Features: -Ping circuit, for easy percussion sounds -level controls for Low Pass, Band Pass, and High Pass inputs. -All inputs can be used simultaneous. -FM bi-polar input -CV direct input Price: $135.00 |
|
Model: BLM GLEBA
Width: 10hp Current: +89mA -88mA What does this do? This module is an analog filter based on the Dwarf Star Semi Modular Synthesizer. This uses 2164 Quad VCA for the filter cells. Each Filter State is internally patched to three toggle switches to allow any combination of filtering states. Low Pass, Band Pass, High Pass. The filter is internally patched to a VCA for compact analog voicing. All you need is the following products to complete a mono analog voice. -BLM Looping ADSR v2.1 -Analog VCO (any one is good) The Gleba has a 2 stage sub harmonic generator inspired from the SH101. There is also a Diode Limiter Circuit activated by toggle switch to simulate metallic feedback tones similar to the MS20 vcf. The front panel has a 'Q' trimmer that allows you to fine tune the self oscillation amplitude. Some people like screaming self oscillation, while others like the classic soft whistle similar to a moog classic filter. You can adjust the resonance to your liking. The self oscillation will track 1v per octave. Expect about 3 octaves of in tune tracking. Higher tracking is slightly off. This is normal behavior. Features: (2) Audio Input jacks. One is internally patched to the sub harmonic generators, with level controls for all of those. The other Audio Input Jack is a direct input. -Rez Voltage Control -Bi-polar FM Attenuinverter input. -VCA with CV input -FCV (Filter CV) direct input for 1v per octave control. Cutoff knob is one of the biggest in the industry. You are paying for the following circuitry: MIXER+SUBHARMONIC+VCF+VCA. Price: $235.00 |
| blm-glebavcf.pdf |
|
Model: BLM Lucky 7
Width 16hp Current: +69mA -68mA PCB Stack: 1 Level, Skiff compatible. Module type: analog filter, sub harmonic generator, internal vca, white noise generator, (self) oscillator What does this do? This particular product is my take on the vintage analog filter found on the Roland SH1 Keyboard. Some key differences from the original are low end correction on the resonance path (audio level would drop), with voltage control, and I used a modern exponential converter. The bass frequency will retain nicely on this modern version. No more audio level drop. The 'RCV' can be used to simulate Band Pass sounding tones when used with audio rate external sources.. I also included the famous feedback patch that lucky users of the vintage keyboard would do. Users would patch from the headphone output back into the filter external input. I duplicated the original discrete headphone circuity and internally patched it for you. All you have to do is turn it up with the 'FBK' knob. Small settings go a long way with this. It can get strange with too much feedback, in a good way. 24db Low Pass Filter. Features: (2) Possible External Audio inputs. (1) White Noise Generator, Switch Jack internally patched to AIN2 input jack. (2) Sub Harmonic Generators taken from the SH101 circuitry. Both are accessible by level knobs. (1) Voltage Controlled Rez, with auto low end level correction. (1) 1V per octave 'Expo' input. (1) Linear FM input. Best used during Filter Self Oscillation duties. (1) Bi-polar FM Attenuinverter. Best used with an external envelope generator. (1) Internal VCA with 2 possible CV inputs. VCA knob is a manual offset to 'open' the VCA. What you get: Mixer+WhiteNoiseGen+Subharmonics+VCF+VCA All you need is a vco, and envelope generator to complete a compact analog mono voice. If this was literally your first and only module, it is possible to make sound and noise for entertainment. Price $225.00 |
| blm_luck7_vcf.pdf |
|
BLM ACID n SONS FILTER
WIDTH: 6HP CURRENT: +64mA -64mA 24DB VCF + VCA This module has the modern 3109 filter chip. The older 3109 chip is found in the vintage Roland keyboards like SH-101. What I did is add resonance audio drop out compensation and precision resistors for the exponential converter. The module will easily track 5+ octaves when in full self oscillation. Band pass was also added as a bonus. The band pass steals the show, as many have not heard an sh101 with band pass. -24db low pass -18db band pass -Internal VCA for easy voice building -FM Bi Polar CV input for the Filter -Envelope Input for the VCA -Dual Audio Inputs, one direct, and the other with over drive. Price $125.00 |
| blmans3109vcf.pdf |