NorthernLightX

Reiceved the goods today via Twin-X, man what a sweet frakkin' sight is that PCB ;D ;D ;D Masterful work Wilba!

Correction: 6581 or 8580. Bad, bad Twinny ;) Keep in mind that 6581 needs 12v and 8580 and 6582 need 9v, etc. etc. etc.

AFAIK only Wilba ever supplied these chips, and every midiboxer that has some has got them from Wilba, and intends to use them for their own project. Better to ask to be put on Wilba's list for the future. Anyway, good luck finding them.

Reminds me of a certain chat conversation on bash.org ....quite unsuitable to copy and post here ;D

Those are more expensive than the cases from www.pollin.de They DO offer a lot more different rack cases though, and I believe they might be nicer too. If there's going to be a group buy (and the prices drop a little), I might be in for a few cases.

It's in the first post...

I could maybe take 1 DIN and the 2 DOUTs off your hands. Shipping could be combined with the panel order. So if you would want to split the lot into multiple orders just PM me and we'll work something out. Cheers, Alex.

No problem at all, just throw them together ;) @Wisefire: shall we make an appointment to meet after I receive the sticks?

I might be interested in those SSM2044 ICs, depending on the price. That reverb, is that an IC or a box of springs? Cheers, Alex.

OK, thanks Doc! I'm going to test that tonight. I'm using a toroid transformer, which is the most "quiet" transformer type as far as I know. Cheers, Alex.

To revive this old thread: I recently got some requests to share the .BRD file of the PSU. It has been on my space since the beginning, there just was no link to it ;D So, If anyone wants to toy with it: http://home.quicknet.nl/qn/prive/alex.span/midibox/MBHP_PSU.brd and http://home.quicknet.nl/qn/prive/alex.span/midibox/MBHP_PSU.sch I just re-read some comments about the PSU not working properly. I have it hooked up to my current MBSIDV2 setup (one CORE_V2 and SID_V2 - these are old style boards) and it works fine. I do want to measure the voltage drop in the resistors before I claim it to be a good design though, hope I'll be able to do that soon. I find the PSU to be pretty quiet, audio-wise. I would like for someone to test it with good equipment though, and the only one I can think of is TK. So Thorsten: would you want to build and test this PSU? I would of course provide you with a free PCB.

Guess what I just found in the mailbox? ;D Haven't had the time to wire it up, but frankly I'd rather wait until I know what way of wiring it up will work out best for the CS PCB. Thanks Altitude!

A little too late bro, could have saved you shipping to send them together with mine... :-\

Progress to report: The schematic is final now. Two 100uF caps where added, one to protect the first opamp when doing hard clipping, and another other to protect the equipment connected to the output jack from receiving DC current. A 47K resistor was also added to keep the output jack at 0v, also to protect the equipment connected to the output jack. The 100nF cap between the Tone and Volume pots was removed from the schematic because we couldn't remember why we put it there originally (:D), and removing it proved to have no influence on the sound. On a personal note: Tonight I made an attempt to apply Lazertran to the pedal case I'm making. I might have been too hasty turning up the heat, as there are quite a few bubbles on the durface now. I thought I had a bottle of turpentine, but it turns out to be ordinary white spirit, which can't be used to remove the plastic lazertran residue. Sticker remover removes both the residu and the lazertran, I found out :-\ (luckily not on the front panel) I'll keep you guys posted if there are any updates.

I have to comment on the bourns encoders that I don't like them very much. I'm quite sure I wired them correctly, but the handling is very unprecise. Many times doing one "click" has no effect, but doing 2 "clicks" jumps 2 values.

As this is your first post on the forum I have 2 things to say: 1: welcome ;) 2: did you order the matching PCB as well? because without it the work might be a tad more difficult than anticipated. Cheers, Alex.

CLK is Clock, it is a connection to the clock pin of the PIC. It is not located in J10 of the core. Please see the SID (maybe the old SID_V2 board info) board interconnection info on uCapps. Don't know about MD.

I would very much like a control surface PCB and panel for the FM, but for a 2U rack rather than another PT-10 case. Cheers, Alex.

No, it's a switching PSU, search the forum for Switching PSU to find out why ;) Cheers, Alex.

Please check yourself ;) If it's HD44780 compatible it's usable, if it's not it might still be usable, check uCapps for a list of compatible displays. Cheers, Alex.

Yep, in for 1 set, shipping together with Twinny ;)

Hi Jaicen, no, the only opamps we tested were the M5218AL and the TL082. In theory any dual opamp with the same pinout (and the pinout is very standard) could be used. Builders of this schematic are encouraged to pick the parts they find sounding best, that's the reason we did not specify the clipping diodes in the schematic too. I believe anything through this sounds immense, the sound samples I recorded were not so hot compared to what I hear the thing produce last weekend ;) For synths a few changes need to be done though, and we will speciy those in the near future. Mendelt also wants to make a special version for bassguitar, all findings will be posted here and I will make a wiki article eventually. Cheers, Alex.

Just for the record: there are going to be some minor changes to the design (adding 2 caps and 1 resistor), mostly to protect the opamps and the equipment after the stompbox. Testing those will occur this weekend, and I hope to be able to post some pictures of the construction of the stompbox too :)

Stryd, according to I find it very possible that these knobs will be manufactured again. I believe the community will take at least 2000 of these babies, that leaves ALBS with a stock of 3000 which he can sell through his regular channels.

GUS MAX did not use SIMMs but simple DRAM modules, and the maximum was 512KB or 1MB. Maybe you're referring to the later Ultrasound PnP cards that never were very successful due to the lack of driver support from Gravis. Allright, back on topic ;)