Big Dave's DIY Design again
2001-09-02 by thomas white
This does seem like alot. But... if you add up the same things on the modular one you end up with more cost and the fact that each module will have to be bought separately. This most likely means a larger cost per set of features and an overall higher level of purchasing from the customers. Never said it wouldn't be cheap, only a great all in one "Classic" style sequencer for MOTM. Check out the modular style numbers for the layout as a whole: 110 Jacks @ $2.00 = $220.00 60 Pots @ $5.00 = $300.00 60 Knobs @ $2.00 = $120.00 60 LED's @ $2.00 = $120.00 19 Push Switches @ $3.00 = $57.00 7 Toggle Switches @ $5.00 = $35.00 3 Panels worth of metal $150.00 Total of $1002.00 parts alone. Double the compact unit price, talk about yikes! Would end up a $2000.00 system at the cheapest with overall release (R&D&P) time taking much longer than the 1 panel guy. Not to mention 30u of overall MOTM cabinet space. Again, I prefer the cramped one and the missing features could be a "Super Dave" add-on right? Buddy module type of thing with the original pcb's being designed with this in mind (Connectors) Just more ideas, Thomas White >From: mate_stubb@... >To: motm@yahoogroups.com >Subject: [motm] RE: Check out Big Dave's DIY Design again >Date: Sun, 02 Sep 2001 20:44:59 -0000 > > > >>>> >Just how nuts would it be to DIY and build this >thing Dave? PCB's? Not that you would ever even be >willing, or offering, just curious ;) ><<<< > >Reasonably nutty. It's dense enough that one or more pcbs would be >necessary. I suppose one could wire-wrap a one-off, but I have only >done a few wrap projects, and I never gained a taste for it. Wire >wrapping would offend the MOTM build aesthetic, that's for sure. > >Density of build is one reason I never attempted it. You would need a >large sub-board whose sole purpose was to connect to all the switches >and pots, and multiplex them. Then a daughterboard for the clock and >shift register stuff. > >Another reason is that for all its complexity, it is a fixed route >design, like a Minimoog. You get 16x2 or 8x4 topography, period. You >get clocked or CV control of stage selection, period. To expand it by >chaining to another identical unit requires summing the outputs in an >external mixer. > >It is interesting how I came to switch my thinking to a modular >sequencing approach. I wanted to add one more feature - the ability >of the Serge TKB to clock the vertical position across rows as well >as horizontal position. The design I had simply couldn't accept >another feature - I had filled up a full rack width, and wasn't >willing to sacrifice anything else for this feature. > >The more I looked at the E-MU modular design - separate clocking, >address generation, and cv generation modules - the more logical it >seemed. Yeah, it's a space hog compared to an all-in-one box, but a >single CV unit now has the room to utilize my nifty design of >simultaneous 8x4, 16x2, and 32x1 outputs. I do understand the allure >of the all-in-one box, however. It would be ungodly expensive just to >use good panel hardware, though! > >17 pots @ $5.00 >17 knobs @ 2.00 >31 jax @ $1.20 >22 switches @ $5.00 >18 leds @ 1.00 >1 panel @ 50.00 >----------------- >Total $453.20 yikes! > >Not to mention pcbs, parts, labor, etc. You would have to charge >$800 - $900 minimum to build one for somebody. > >Moe > _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp