The following is some info pulled via Ren on Kickstarter and their website. Note the website states "CONCEPT BOUTIQUE ANALOGUE SYNTHESIZERS DESIGNING CIRCUITS DIFFERENTLY TO SOUND GREAT", which implies multiple synthesizers. The Chicago appears to be their first.
"Deep Lounge sinewaves, classic House bass, through to dirty Techno riffs. A MIDI Saw/Square/Sub wave Analogue Synthesizer with four additional independent pulse waves that are adjustable in phase and width.
The Chicago Boutique RIFF & BASS Analogue Synthesizer is designed with basic or limited features, yet a useful sound portfolio, made possible by the four variable phase and width pulse oscillators, in addition to the Sub, Square and Saw oscillators, all shaped by a wide bandwidth 4 pole Sallen & Key low-pass analogue filter.
The 'limited edition' product features:
Analogue signal path from the oscillator to the output1 x Saw or Square wave (selectable)
1 x Synced Square Sub (-1 Octave) - it also divides the Saw frequency by 2
4 x independent Pulse waves with automatic or manual adjustment of the phase, and manual adjustment of the pulse width
Tune (0 to +60 cents), 3rd, 5th or 7th
MIDI In, MIDI Thru, channel selection 1 to 16
Classic Gate mode or Gate and 'Trigger on every note' mode
6 channel mixer
Amplifier ADSR
Sallen & Key 24dB/Octave Low pass filter with Attack, Peak, Decay, Sustain and Resonance control
Set to sine (low frequency filter) switch
Filter decay mode switch
482 mm (19") x 132 mm (3U) and ~40 mm from face to base
1 Watt power dissipation
Approx. 2 kg"
"Purpose for Funding:
The purpose of the funding is to produce a small limited quantity production run (30 units) and to fund the Metal fabrication and Silk Screen set-up/tooling costs, which are too high at quantities in the range of 1 to 5 units. Costs can be reduced with quantities of 25 units (and above), but restricting the run to 30, will present the least risk, and the best cost break.
A metalwork test sample of 5 will be produced first (which will cost around £200 in total). If these are OK, then 30 will be produced.
The PCB test samples (5 of them) has already been funded - and the design works perfectly. These can be repeat-ordered.
If the project runs smoothly, which it should do, then the funding can be used to 'shrink' the product design (with reduced controls, and surface-mount components) and ultimately sell these through distributors, who will of course, add their mark-up (but that's life).
What is the status of the project at this point?
The PCB is designed and the Gerber (CAM) files are complete. A batch of 6 PCBs were made, and two of them populated. They worked perfectly - first time. The PCB quality is good, so this PCB Manufacturer is selected.
The Bill Of Materials (BOM) is complete with alternative options for components along with alternative suppliers. These suppliers are: RS, Farnell, Mouser, TME and Digikey. No Far-Eastern companies have been chosen due to component counterfeit possibilities, and due to lack of knowledge of these companies.
The metalwork fabricator, working from IGS and DXF files, has supplied a well written quotation (they are ISO9001 certified). All costing is for metalwork, flat-black powder-coating and white Silk-Screen.
Nothing really much more to do apart from build them - which is the easy part.
What does the pledge give you?
You get a 'limited edition', hand built, fully functional Chicago Riff & Bass Synthesizer, in a metal case, as shown in the 2D illustration above (and on the website) - with knobs fitted."
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