| Author |
Message |
psylux
Joined: May 15, 2007
Posts: 44
Location: Dallas, TX
|
 Posted: Mon Jul 23, 2007 2:43 pm Post subject:
What is the best use of SAD512, SAD1024 BBDs |
  |
|
| It looks like I might end up with a few SAD512, and while my next BBD project will be Jurgen's board, I wonder if there is a design around to best make use of the higher specs these SAD chips are capable of? |
|
|
Back to top
|
|
 |
stefano
Joined: Nov 23, 2006
Posts: 33
Location: ITALY
Audio files: 5
|
| Posted: Mon Jul 30, 2007 9:30 am Post subject:
|
|
|
You can use these chips to implement Chorus, Flangers and Delay based effects. Try to google: Chorus "SAD 1024" .
Bye |
|
|
Back to top
|
|
|
Peake
Joined: Jun 29, 2007
Posts: 1113
Location: Loss Angeles
Audio files: 3
|
| Posted: Thu Aug 02, 2007 9:59 pm Post subject:
|
|
|
IIRC, the 1024 is used in the Electro Harmonix Electric Mistress, the A/DA flanger, and the MXR "117" flanger. All of which sound and behave differently and would each be valid sources for cloning. I see via Google that at least one person already did a limited run clone PCB for the A/DA flanger.
The only circuit I remember offhand as using the 512 was the ARP Omni 2 phaser/flanger board. Not as impressive as the Solina chorus ensemble, IMO.
Good luck, hope that helps. |
|
|
Back to top
|
|
|
StephenGiles
Joined: Apr 17, 2006
Posts: 507
Location: England
|
| Posted: Fri Aug 03, 2007 11:10 am Post subject:
|
|
|
| There were a couple of 512 circuits in ETI by Tim Orr who knew what he was talking about. |
|
|
Back to top
|
|
|
Peake
Joined: Jun 29, 2007
Posts: 1113
Location: Loss Angeles
Audio files: 3
|
| Posted: Fri Aug 03, 2007 1:43 pm Post subject:
|
|
|
Poking around this board, I see a member ID'd as Moosapotamus. He's the one who created the A/DA clone board I just mentioned. This is worthy of a new run, IMO.
Sorry, I'm way ahead of myself. The Modcan Super Flanger, based upon the A/DA, uses two MN3005 BBD ICs. |
|
|
Back to top
|
|
|
StephenGiles
Joined: Apr 17, 2006
Posts: 507
Location: England
|
|
|
Back to top
|
|
|
moosapotamus
Joined: May 11, 2007
Posts: 113
Location: New Hampshire USA
|
|
|
Back to top
|
|
|
StephenGiles
Joined: Apr 17, 2006
Posts: 507
Location: England
|
| Posted: Sun Aug 05, 2007 1:25 am Post subject:
|
|
|
| I must rescan the Bell Flanger, I really messed that one up when I did it. I got that by phoning the company many years ago! |
|
|
Back to top
|
|
|
funkyfarm
Joined: Jan 21, 2007
Posts: 583
Location: France
Audio files: 3
|
| Posted: Sun Aug 05, 2007 2:10 am Post subject:
|
|
|
| moosapotamus wrote: |
This is worthy of a new run, IMO.
I could certainly start a new thread to see if another run would be worthwhile.
~ Charlie |
You definitely should !
And maybe wait until late september, when all the folks will be back from the beach.
We shall all stop dreaming on Eventide/Storm Tide Flanger !
I still remember hearing "ADA flanger is the king !" 
Small bear starts growling.
http://www.smallbearelec.com/Detail.bok?no=245 |
|
|
Back to top
|
|
|
Peake
Joined: Jun 29, 2007
Posts: 1113
Location: Loss Angeles
Audio files: 3
|
| Posted: Sun Aug 05, 2007 10:36 am Post subject:
|
|
|
Hey! If I can get some money together, I'd definitely build a pair (I've a pair of NOS chips from when Midwest was still selling them- I remember when you could get them at Rat Trap). I agree, it's one of the most interesting flangers, IMO (never owned one of the Rolands). Thanks! |
|
|
Back to top
|
|
|
cebec
Joined: Apr 19, 2004
Posts: 1098
Location: Virginia
Audio files: 3
G2 patch files: 31
|
| Posted: Sun Aug 05, 2007 12:26 pm Post subject:
|
|
|
| The Serge WAD (Wilson Analog Delay) uses a SAD 1024. |
|
|
Back to top
|
|
|
funkyfarm
Joined: Jan 21, 2007
Posts: 583
Location: France
Audio files: 3
|
| Posted: Sat Dec 08, 2007 10:36 am Post subject:
|
|
|
Is there any chance to see WAD schematic on-line one day ?
Some patents are still "active" for SERGE designs ?
http://www.serge-fans.com/wiz_audiomod.html
| serge-fans.com wrote: | These features provide an amazingly varied palette of effects. Here are some of the possible ways to use this module:
* VC FLANGER
* "GLIDING" FREQUENCY SHIFT effects (the frequency shift effect is never steady, but is a function of envelopes varying the delay rate).
* STRAIGHT DELAY (perceived as fast repeats as in the delay between two tape recorder heads).
* ECHO CHAMBER EFFECTS, where the delayed signal is fed back into the Analog Delay's input. (The switchable AUX input is particularly valuable for this type effect, especially if an external VCA is inserted into the feedback loop, allowing voltage control of the number of echoes as well as their rate of occurrence).
* CHORUS EFFECTS
* VIBRATO EFFECTS
* DELAY AND ECHO OF CONTROL VOLTAGE ENVELOPES (via IN-2). Though the maximum guaranteed delay is .5 second, in practice the delay will go to more than 5 seconds for low frequency signals such as control voltages.
* MODULATION EFFECTS resulting from the modulation of the input signal by the clock internal to the Analog Delay.
** The first question often asked about the Analog Delay is how long a delay can it do? The answer to this question is fairly complex. Quite a long delay can be performed by the module. However, as delay becomes longer, the bandwidth of the signal which can be processed by the Analog Delay becomes more restricted. As an example, if it is desired to delay a signal consisting of a sine wave at 440 Hz (concert "A"), then better than a half second can be gotten quite cleanly. The same note with a lot of harmonics, say a square wave at 440 Hz, if delayed at a half second, will produce a very modulated output(if the Analog Delay's built-in filters are opened wide) full of extraneous signals, or will lose its overtones because the filters will remove them. (This is why many other delay modules have a dulling effect at long delays). The moral to this story is that one function which the Wilson Analog Delay will not do, is to reproduce the full effects of tape delay (i.e. "echo-plexing") without appreciably changing the signal being delayed. But tape delay is a stock effect, usually available to most synthesists (but which can be used with other voltage-controlled functions such as filtering, phasing, frequency shifting, etc., for more sophisticated effects).
The forte of this module is its ability to transform signals and control voltages in an incredible number of ways.
|
5 seconds delay for my CVs ? hmmm... |
|
|
Back to top
|
|
|
|
Forum index » DIY Hardware and Software
FAQ
Calendar
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
Chat Room
