Add The Boss OS-2 To The Mod List

[STRATDELUXER97]

Re: Add The Boss OS-2 To The Mod List

John, what is Roland going with with that SIP up in the top of the pcb?
Also what DIP did you finally decide on going with (can't see the designation)?
You wouldn't happen to have a schematic of the stock one you could e-mail me would you (you know me and collecting distortion pedal schematics) ... Thanks ...

Kent...I had to wing it with the OS-2 because I don't have the schematic...These pedals are very similar in how they work and the boards look the same also...I just know where to make the changes from doing alot of pedal mods..I Know what works and what won't...I use the TI RC4558P chip in the SD1 and this OS-2 because I feel this chip gives the pedal more note clarity...The JRC4558D is great if you want a warmer,dirtier tone,but with higher gain stuff I don't like it as much...The RC4558P is actually a better and higher performance opamp..Kent what is "SIP"? Talk laymen's talk and stop trying to impress me! :smack:

John

 

[STRATDELUXER97]

Re: Add The Boss OS-2 To The Mod List

after looking at the parts chart for the ds-1 that got modded, i've been trying to find out where i can put 2 LED's in that old boss power driver, and the 1uf film thing, the other 2 parts it said enhanced the bass & mids, so im assuming the other 3 made it less electronic sounding, which REALLY needs to be done to the pw-2. Sadly i don't know anything & have no idea where to put them. I think i stared at the circuit board for like an hour trying to figure it out. I need a book or something

Do like several other modders that have tryed to mod their own pedals...Send it to me and have it done really great..It'll have great tone...Sorry but I don't like to give out too much info on the hows of my mods,as it took me alot of my own time to figure out...

John

 

[STRATDELUXER97]

Re: Add The Boss OS-2 To The Mod List

I would have imagined that they used assymetrical for the OD and symmetrical for the distortion, with different filtering,gain, and control range ... that's why I'm intersted in seeing if John has a schematic for it.
I also need to come across a schemtic for the old PH-1R phaser of theirs, you wouldn't have happened to come across one of those over in your part of the world would you Rid? ::::crosses fingers::::

Kent...I see what your asking...That's just an inline dual opamp for the DS1 style side of the OS-2...The newer Taiwan made DS1s use an inline similar to the one you see on the board,but the numbers are different...I change that inline opamp in my DS1 mods...A DS1 has either the regular 6 pin chip and the later ones use the inline chip,but there's only 1 opamp in a DS1(Not 2)...

John

 

[STRATDELUXER97]

Re: Add The Boss OS-2 To The Mod List

Hey John I gots an OS-2 and i was thinking on selling it, but then i see your post..
Ive always found it to be very lifeless and have lack of bass and the dist seems simply lifeless and boring...Would your mod improve that??,,also latley ive been using quiet a bright tone so mabye that would suit nicely as you voice it with your singles..:laugh2:

You dont have a soundclip do you?? not to worry if ya dont,,

Sorry no sound clips...Not enough time lately to do any kind of recordings....LOL

Read above my postings about this pedal after I Modded it...It has plenty of low end balls now...I really disliked the stock OS-2....Flat and sterile is a better explanation of what I heard...Send it to me and if you don't like what you hear(And you will) Sell it.... :wink:

John

 

[STRATDELUXER97]

Re: Add The Boss OS-2 To The Mod List

I would have imagined that they used assymetrical for the OD and symmetrical for the distortion, with different filtering,gain, and control range ... that's why I'm intersted in seeing if John has a schematic for it.
I also need to come across a schemtic for the old PH-1R phaser of theirs, you wouldn't have happened to come across one of those over in your part of the world would you Rid? ::::crosses fingers::::

Kent...See,I was going to ask you for the schematics..Makes my tweaking a heckuva lot easier and less time consuming tracing the stupid little board tracings all over the place!

 

[y2stevo]

Re: Add The Boss OS-2 To The Mod List

Hmm idunno, the whole shipping to and back might make it a bit uneconomical, have you done any for people in Europe?

 

[STRATDELUXER97]

Re: Add The Boss OS-2 To The Mod List

Hmm idunno, the whole shipping to and back might make it a bit uneconomical, have you done any for people in Europe?

Yep..So far Norman T and Doogz from the UK...Shipping back to you is about $20 or a bit less...

Norman and Doogz had me order them brand new pedals,I then modded them,and shipped them back..It was pretty painless for both parties...IM me if I can help you...

John

 

[y2stevo]

Re: Add The Boss OS-2 To The Mod List

Cheers John, I may get in touch in the future but at the moment i need the money to buy speakers for the cab im (still planning to:laugh2: ) build

 

[STRATDELUXER97]

Re: Add The Boss OS-2 To The Mod List

Cheers John, I may get in touch in the future but at the moment i need the money to buy speakers for the cab im (still planning to:laugh2: ) build

No explanation needed buddy.You know how to get ahold of me.. :wink:

John

 

[jmcorey]

Re: Add The Boss OS-2 To The Mod List

The pedal now sounds alot better and more natural...I'm able to kill the shrillness by using better components and also small caps across the distortion diodes...I always voice my pedals using a strat with single coils..If I can make myself happy with a strat in the fullness department,then I'm happy....There's alot of good tonal adjustment on this pedal now and it articulates well due to a better opamp and the changes....You may just need to back off on the gain settings I used with my strat,but the pedal still has plenty of overall tone and drive adjustments...The color control is alot more usable,in that I like the tone on both extreme settings..The in between settings are really good because the pedal just has alot more of everything...Especially balls...My pedals have to have "balls"... :wink:

Send it to me and I'll fix it up and send it back...if you don't like what you hear,only pay the shipping.... :wink: You're a friend,so go for it buddy..

And I am TOTALLY psyched. It is in the mail and I cannot wait to hear it.

 

[Kent S.]

Re: Add The Boss OS-2 To The Mod List

Kent...I had to wing it with the OS-2 because I don't have the schematic...These pedals are very similar in how they work and the boards look the same also...I just know where to make the changes from doing alot of pedal mods..I Know what works and what won't...I use the TI RC4558P chip in the SD1 and this OS-2 because I feel this chip gives the pedal more note clarity...The JRC4558D is great if you want a warmer,dirtier tone,but with higher gain stuff I don't like it as much...The RC4558P is actually a better and higher performance opamp..Kent what is "SIP"? Talk laymen's talk and stop trying to impress me! :smack:

John

Stop trying to impress you? Smart%$# ... :laugh2:
I don't type, you think I want to type out *single in-line package*?
There is a small black SIP looking thing in the upper third or so, of that image of the OS-2 that you worked on, it looks like some type of chip, or chip based resistor or capacitor network ... what's the number/letter designations on it, just curious as to finding out what it is.
I like both of those 4558s, BTW, but some of those 4558 aren't really JRCs they are NJMs, and there was or is a bunch of hype surrounding JRCs being the real things. For some reason though it seems like Roland still gets the real thing, either that or they have one heck of a stock left over from the past decade. If you haven't shippe it back to the owner yet see if you can get that number for me, if it's not to much trouble, Thanks. :cool3:

 

[STRATDELUXER97]

Re: Add The Boss OS-2 To The Mod List

"Stop trying to impress you? Smart%$#"

Type you lazy ba$tard.... :burnout:


Kent...Sorry buddy but I already sent the OS-2 back to JM Corey...My picture of it doesn't show the numbers...That is just a dual inline opamp like Boss uses in the DS1 BUT with different numbers..

I still have some early JRC4558Ds and I have to be quite honest by telling you that I don't hear the hype..The TIRC4558P chip keeps the pedal tight and articulate but gives up some lows,works great with higher distortion pedals...I had to take my picture off the forums to stop people from wanting freebee mod info from me....LOL It's not like I charge that much to mod one,ya know? Anyway....

John

 

[STRATDELUXER97]

Re: Add The Boss OS-2 To The Mod List

And I am TOTALLY psyched. It is in the mail and I cannot wait to hear it.

It is so much better now Joe...Better chip,tweaked components,good caps and metal film resistors...Sounds like a great pedal now...

John

 

[BluesJunkie]

Re: Add The Boss OS-2 To The Mod List

STRATDELUXER97 - I'm interested and just sent you a P.M.

 

[midnite_man]

Re: Add The Boss OS-2 To The Mod List

That's great, John! Add another notch to the handle of your soldering iron, 'bro!!
....Bob

 

[DanielJames]

Re: Add The Boss OS-2 To The Mod List

Would changing the inline op amp for the distortion side have as much benefit as changing the jrc1458d ...? I unsoldered all the clipping diodes except one and didn't really notice anything major, the op amp itself it clipping? If I did that on the ds2 that I have I bet it will drastically change it since I don't see a op amp anywhere. Still a noob to the mod thing so I'm trying to understand how and why in typical to me hands on fashion.