Rosac - NuFuzz

Discussion regarding early stompbox technology: 1960-1975 Please keep discussion focused and contribute what info you have...

Rosac - NuFuzz

Postby Solidhex » 15 Jun 2009, 07:46

Yo

Figured we had talked enough about the Nu-Fuzz in the Nu-wah thread. Time for a dedicated thread about the Nu-Fuzz. So where did we leave off? Dan N had posted this schem: Image
We had previously discussed the odd resistor values and speculated that they could possibly be the result of in circuit resistor measurement? Ron Neely you had mentioned that you had talked to the man responsible for busting open his Rosac wafer and making those measurements...
I'd say its safe to say the capacitor values are correct. They make sense. The resistor values are the strange ones. I measured the resistors of my fuzzrite clone in circuit see if it would shed any light. They are all 470K's. Q1's base to collector gives me 457K. Q1 collector resistor measures 460K. Q2's base to collector measures 470K exactly. The collector resistor measures 460K. So the circuit doesn't seem to mask the resistor values when measured in circuit. Its probably safe to assume this isn't a Fuzzrite...
So we got a 626K, a 788K, a 1.2 meg, 740K, and series string of 48.1K and 2.7K in parallel with the 500k volume pot. I'm not too concerned with the 48.1k/2.7K combo but the rest sort of leaves me with a headache. If we're dealing with 20% tolerance transistors that leaves a pretty wide spread.

--Brad
Solidhex
Resistor Ronker
 
Posts: 262
Joined: 02 Apr 2008, 05:43
Has thanked: 10 times
Have thanks: 17 times

Re: Rosac Nu-Fuzz

Postby RnFR » 15 Jun 2009, 08:25

yeah this schem is wierd. those collector values seem way too big.
"You've converted me to Cubic thinking. Where do I sign up for the newsletter? I need to learn more about how I can break free from ONEism Death Math." - Soulsonic

Blog-APOCALYPSE AUDIO
User avatar
RnFR
Old Solderhand
 
Posts: 5136
Joined: 09 Jan 2008, 07:02
Location: Inner Earth
Has thanked: 138 times
Have thanks: 169 times

Re: Rosac Nu-Fuzz

Postby Dan N » 16 Jun 2009, 02:00

While it seems a pity to waste another circuit module, I'll offer one to sacrifice for a detailed dissection. I would want to see photos of the resulting inner structure if possible.
Dick joke has expired.
User avatar
Dan N
Resistor Ronker
 
Posts: 273
Joined: 26 Jun 2007, 19:54
Location: Oregon USA
Has thanked: 53 times
Have thanks: 19 times

Re: Rosac Nu-Fuzz

Postby RnFR » 16 Jun 2009, 02:32

well i'll be the first to say-

that is pretty fucking awesome!

and i'm even volunteering soulsonic's degooping/tracing services... as long as he does it at my house! :mrgreen:
"You've converted me to Cubic thinking. Where do I sign up for the newsletter? I need to learn more about how I can break free from ONEism Death Math." - Soulsonic

Blog-APOCALYPSE AUDIO
User avatar
RnFR
Old Solderhand
 
Posts: 5136
Joined: 09 Jan 2008, 07:02
Location: Inner Earth
Has thanked: 138 times
Have thanks: 169 times

Re: Rosac Nu-Fuzz

Postby Solidhex » 16 Jun 2009, 05:39

Yo

Wow Dan that is awesome.

--Brad
Solidhex
Resistor Ronker
 
Posts: 262
Joined: 02 Apr 2008, 05:43
Has thanked: 10 times
Have thanks: 17 times

Re: Rosac Nu-Fuzz

Postby Dan N » 16 Jun 2009, 07:08

So, paging soulsonic. PM me your address.
Dick joke has expired.
User avatar
Dan N
Resistor Ronker
 
Posts: 273
Joined: 26 Jun 2007, 19:54
Location: Oregon USA
Has thanked: 53 times
Have thanks: 19 times

Re: Rosac Nu-Fuzz

Postby RnFR » 16 Jun 2009, 20:07

i talked to SS. he said he's down to do it, but he won't have time until some time next month. is this kosher?
"You've converted me to Cubic thinking. Where do I sign up for the newsletter? I need to learn more about how I can break free from ONEism Death Math." - Soulsonic

Blog-APOCALYPSE AUDIO
User avatar
RnFR
Old Solderhand
 
Posts: 5136
Joined: 09 Jan 2008, 07:02
Location: Inner Earth
Has thanked: 138 times
Have thanks: 169 times

Re: Rosac Nu-Fuzz

Postby Dan N » 16 Jun 2009, 20:42

Ko-ko-kosherific.

Let me know when it's a go. Thanks to ss.
Dick joke has expired.
User avatar
Dan N
Resistor Ronker
 
Posts: 273
Joined: 26 Jun 2007, 19:54
Location: Oregon USA
Has thanked: 53 times
Have thanks: 19 times

Re: Rosac Nu-Fuzz

Postby RnFR » 16 Jun 2009, 20:45

sweet! expect a pm.
"You've converted me to Cubic thinking. Where do I sign up for the newsletter? I need to learn more about how I can break free from ONEism Death Math." - Soulsonic

Blog-APOCALYPSE AUDIO
User avatar
RnFR
Old Solderhand
 
Posts: 5136
Joined: 09 Jan 2008, 07:02
Location: Inner Earth
Has thanked: 138 times
Have thanks: 169 times

Re: Rosac Nu-Fuzz

Postby soulsonic » 18 Jun 2009, 09:11

I'll dissolve it with my pee! [smilie=a_wizard.gif]
User avatar
soulsonic
Old Solderhand
 
Posts: 3503
Joined: 27 Jun 2007, 04:38
Location: Ithaca, NY
Has thanked: 53 times
Have thanks: 248 times

Re: Rosac Nu-Fuzz

Postby RnFR » 18 Jun 2009, 09:27

teehee! [smilie=a_bow.gif]
"You've converted me to Cubic thinking. Where do I sign up for the newsletter? I need to learn more about how I can break free from ONEism Death Math." - Soulsonic

Blog-APOCALYPSE AUDIO
User avatar
RnFR
Old Solderhand
 
Posts: 5136
Joined: 09 Jan 2008, 07:02
Location: Inner Earth
Has thanked: 138 times
Have thanks: 169 times

Re: Rosac Nu-Fuzz

Postby RnFR » 06 Jul 2009, 15:29

got it in the mail from dan tha man! now somebody buy a pedal from martin so he can get his hairy, broke, rasputin-lookin ass to chicago.

maybe, if you ask real nice, he'll add a lock of his beard for extra mojo! [smilie=a_wizard.gif]
"You've converted me to Cubic thinking. Where do I sign up for the newsletter? I need to learn more about how I can break free from ONEism Death Math." - Soulsonic

Blog-APOCALYPSE AUDIO
User avatar
RnFR
Old Solderhand
 
Posts: 5136
Joined: 09 Jan 2008, 07:02
Location: Inner Earth
Has thanked: 138 times
Have thanks: 169 times

Re: Rosac Nu-Fuzz

Postby MoreCowbell » 06 Jul 2009, 20:52

I used to have a schemo for this somewhere ...not the hand drawn one. I'll see if I can dig it up. Basically it was the same thing, just had the resistor values (not measured values) as you would buy them (ie 750k on Q1, Q2 collectors) .
MoreCowbell
Transistor Tuner
 
Posts: 1107
Joined: 06 Aug 2007, 15:39
Has thanked: 0 time
Have thanks: 11 times

Re: Rosac - NuFuzz

Postby RnFR » 24 Aug 2009, 01:37

just want to give a head's up-

i got the circuit in the mail a while back from dan. unfortunately martin has been busy renovating his new home, so he hasn't been able to make it up. i might have to give this one a go by myself. it seems simple enough. i'll at least give a shot at getting it out of the goop and take some pics. shouldn't be tough reverse though. hopefully i'll have something to post about it soon. thanks everyone for being patient!
"You've converted me to Cubic thinking. Where do I sign up for the newsletter? I need to learn more about how I can break free from ONEism Death Math." - Soulsonic

Blog-APOCALYPSE AUDIO
User avatar
RnFR
Old Solderhand
 
Posts: 5136
Joined: 09 Jan 2008, 07:02
Location: Inner Earth
Has thanked: 138 times
Have thanks: 169 times

Re: Rosac - NuFuzz

Postby RnFR » 27 Aug 2009, 06:48

rosac nufuzz clone sold on ebay. sounds like he used the schematic posted here. there's a clip in the auction, too.

http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 0167974597
"You've converted me to Cubic thinking. Where do I sign up for the newsletter? I need to learn more about how I can break free from ONEism Death Math." - Soulsonic

Blog-APOCALYPSE AUDIO
User avatar
RnFR
Old Solderhand
 
Posts: 5136
Joined: 09 Jan 2008, 07:02
Location: Inner Earth
Has thanked: 138 times
Have thanks: 169 times

Re: Rosac - NuFuzz

Postby bunnycat » 15 Sep 2009, 09:59

:oops: (holding breath)
bunnycat
 
Posts: 7
Joined: 28 Mar 2009, 04:59
Has thanked: 0 time
Have thanks: 0 time

Re: Rosac Nu-Fuzz

Postby analogguru » 14 Feb 2010, 20:08

RnFR wrote:got it in the mail from dan tha man! now somebody buy a pedal from martin so he can get his hairy, broke, rasputin-lookin ass to chicago.

maybe, if you ask real nice, he'll add a lock of his beard for extra mojo! [smilie=a_wizard.gif]


Anything new ?

analogguru
There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.
analogguru
Old Solderhand
 
Posts: 3286
Joined: 26 Jun 2007, 14:58
Has thanked: 0 time
Have thanks: 110 times

Re: Rosac - NuFuzz

Postby floobydust » 17 Feb 2010, 04:26

Was a friend of the guy who designed this- Eddie Sanner. He designed most of the effects for Mosrite and Rosac in the 1960's out of Bakersfield, California.
floobydust
 
Posts: 9
Joined: 10 Feb 2010, 21:34
Has thanked: 0 time
Have thanks: 0 time

Re: Rosac - NuFuzz

Postby RnFR » 17 Feb 2010, 05:09

this thing has been sitting on my bench for ages now. i was going to wait for martin, but i think i'll just start hacking into this thing myself. i really need to invest in some sort of dental pick or other sharp instrument. the only thing is, that i might not have a proper camera to give it a go. it might be possible for me to get my hands on my girlfriend's super nice digital slr though. sorry to dan and everyone else for this taking so long. i'll start scraping this clay like substance away soon. anyone know an easy way to get this shit off?
"You've converted me to Cubic thinking. Where do I sign up for the newsletter? I need to learn more about how I can break free from ONEism Death Math." - Soulsonic

Blog-APOCALYPSE AUDIO
User avatar
RnFR
Old Solderhand
 
Posts: 5136
Joined: 09 Jan 2008, 07:02
Location: Inner Earth
Has thanked: 138 times
Have thanks: 169 times

Re: Rosac - NuFuzz

Postby jrod » 17 Feb 2010, 17:17

Do you have Harbor Freight in your town? Maybe these: http://www.harborfreight.com/cpi/ctaf/d ... mber=93514
jrod
Resistor Ronker
 
Posts: 415
Joined: 09 Jan 2009, 15:24
Has thanked: 324 times
Have thanks: 39 times

Next

Return to Vintage Stompbox Corner ( ... - 1975)

Who is online

Users browsing this forum: No registered users and 4 guests