Boss RPS-10??

[Skeezix]

Schematic... please?

[ExpAnonColin]

Are you @#$%ing kidding?  This thing not only has an EPROM but the circuitboard is as big as a half rack and is equally as unnecessarily complex.

-Colin

[Peter Snowberg]

This thing not only has an EPROM but the circuitboard is as big as a half rack and is equally as unnecessarily complex.

-Colin

It could be for learning or repair too. Please don't be so critical about people looking for larger amounts of information than you want to digest. There is much to be learned from looking at large schematics, especially those that deal with A/D and D/A in the audio world.

Now…. unnecessarily complex?? I don't think so. In commercial high-volume reality, you simply don't put extra parts on the board. Once you design and build a digital pitch shifter, then tell me about unnecessary complexity in terms of what it took to do the task in the mid 80s. What does your DSP pitch shifting design look like? I designed and built one in the early 90s and it was big and power hungry. Hint: it 'aint that easy!


Sorry Skeezix, I don't have the schematic but I would love to see it too.

Take care,
-Peter

[ExpAnonColin]

Yes yes, of course you're right, Peter, I was wrong to be so rash in my comments.  The schematic, however, would gigaaantic.

If you need any help with repairing (if such is the case), I can try to help, I modified my own slightly.

-Colin

[primalphunk]

Hmmm...sorry to butt in...I have an RPS10 that I really dig but when I do the reverse effect it is always at exactly the same tempo.  Shouldn't one of the knobs actually change the time setting?  Tweak the knobs till the cows come home and it just won't change.

If you don't mind my asking, what kind of 'slight' mod did you do to yours?

[ExpAnonColin]

Hmmm...sorry to butt in...I have an RPS10 that I really dig but when I do the reverse effect it is always at exactly the same tempo.  Shouldn't one of the knobs actually change the time setting?  Tweak the knobs till the cows come home and it just won't change.

If you don't mind my asking, what kind of 'slight' mod did you do to yours?

Well, what I found to be the problem with the reverse setting was that the tempo was too "locked" (even though I could change it), so that basically unlike most delays the delays weren't determined by your playing, but rather a constant clock, like a tremolo or a phaser (but I guess that's how it is with all reverse echo's).

I mounted an on/off switch on top in order to make it more stomp-boxable (not a rack guy myself), made the delay time slightly longer, and mounted a switch that allows it to feedback (really feedback, not like the tiny bit it does stock or even after some trimpot tweaking).  Unfortunately, because of the "cold" digitalness of it makes it sound very very gratingly high pitched after a bit.  Still a very fun box though.

-Colin

[GuitarLord5000]

Are you @#$%ing kidding?

-Colin

Damn Colin!   :shock:

But I DO know where you are coming from.  I looked at the inside of one of these things and was haunted by nightmares for a week after.  I'd like to see a schem also, if anyone ever gets their hands on one.  It'd be worth a look to see what kinda thinking goes behind one of those units.  Wouldnt try to build one tho.  Even if it werent too complex for my meager skills, I dont really like the sound.

If you ever find one Skeezix, let me know.  And out of curiosity, what DO you need it for?

[Browny]

Hello you can found it here
http://www.univertron.com/SAS/manuals/Boss%20%28Roland%29/Boss%20RPS%2010/

[Taylor]

Hello you can found it here
http://www.univertron.com/SAS/manuals/Boss%20%28Roland%29/Boss%20RPS%2010/

Thanks for posting that - I always enjoy looking at this type of early digital circuit.

Although, I'm guessing Skeezix stopped looking for this about 8 years ago! 

[charmonder]

....
Well, what I found to be the problem with the reverse setting was that the tempo was too "locked" (even though I could change it), so that basically unlike most delays the delays weren't determined by your playing, but rather a constant clock, like a tremolo or a phaser (but I guess that's how it is with all reverse echo's).
...

oh! yes you're absolutely right! I could never understand it until now, I have the danelectro wasabi reverse delay which has a tap tempo switch, but it never seems to work for the reverse delay. you can get a perfectly reversed sound guitar if you keep tapping it, but if you leave it alone it will slowly drift out of sync and sound really glitchy and remixy. which is cool too I guess but not compared to that perfectly reversed sound is incredible! Maybe there is some unit out there that can MIDI sync reverse delay.




Anyhow back on topic, if you're opening up an rps-10 you might want to experiment with messing around where the keyboard control comes in, maybe get some different wave forms for the control VCOs? I have absolutely no experience in it, but one of the few things Autechre admits as one of their primary sound devices are boss half rack delays that theyve circuit bent themselves. and namely the rps-10 is one of their favorites because of the keyboard input thing.