Jordan - Bosstone  [schematic]

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

Jordan - Bosstone

Postby drewl » 17 Feb 2010, 18:53

Anyone ever build one of these?
I was bored so I slapped one together. It won't work with the 150k resistor from Q1's base to ground no matter what value I tried.
Anyway, I have a test box for trying new circuits I can wire it up to and try it when I get home.
drewl
Breadboard Brother
 
Posts: 85
Joined: 11 Feb 2010, 15:56
Has thanked: 0 time
Have thanks: 2 times

Re: Jordan Bosstone?

Postby Dan N » 17 Feb 2010, 19:51

There are several schematics, including a known wrong one. Which did you use?
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: Jordan - Bosstone

Postby The Rotagilla » 18 Feb 2010, 05:22

Built one, tried both schematics and was underwhelmed. :|
The television will not be revolutionized.
User avatar
The Rotagilla
Diode Debunker
 
Posts: 722
Joined: 20 Aug 2007, 19:24
Has thanked: 6 times
Have thanks: 49 times

Re: Jordan - Bosstone

Postby drewl » 18 Feb 2010, 14:45

I built this one below

http://schematicheaven.com/effects/jordan_bosstone.pdf
I found another schem with the second transistor a PNP, so I don't know which was the wrong version.
I'll swap Q2 and see.
It's kinda like the EH Muff Fuzz.
drewl
Breadboard Brother
 
Posts: 85
Joined: 11 Feb 2010, 15:56
Has thanked: 0 time
Have thanks: 2 times

Re: Jordan - Bosstone

Postby IvIark » 18 Feb 2010, 14:49

Yes Q2 should be PNP
"If anyone is a 'genius' for putting jacks in such a pedal in the only spot where they could physically fit, then I assume I too am a genius for correctly inserting my legs into my pants this morning." - candletears7 - TGP
User avatar
IvIark
Tube Twister
 
Posts: 2298
Joined: 02 Jan 2008, 00:59
Location: Manchester UK
Has thanked: 662 times
Have thanks: 667 times

Re: Jordan - Bosstone

Postby drewl » 18 Feb 2010, 15:26

I tried it out and with the correct Q2 and it works with the Q1 base resistor.
Not that I'll ever use this thing, I've got like a dozen little boards lying around of different fuzzes I've built for the heck of it.
If they sound great, then they get put into a pedal.
drewl
Breadboard Brother
 
Posts: 85
Joined: 11 Feb 2010, 15:56
Has thanked: 0 time
Have thanks: 2 times

Re: Jordan Bosstone?

Postby jrod » 18 Feb 2010, 15:42

Dan N wrote:There are several schematics, including a known wrong one. Which did you use?


For clarification, please, is this the known wrong schematic? http://schematicheaven.com/effects/jordan_bosstone.pdf

Thanks!
jrod
Resistor Ronker
 
Posts: 415
Joined: 09 Jan 2009, 15:24
Has thanked: 325 times
Have thanks: 39 times

Re: Jordan - Bosstone

Postby drewl » 18 Feb 2010, 16:18

It seems so.
Q2 should be a PNP with the collector grounded.
With an NPN in Q2 spot it won't work with the 150k resistor from Q1's base to ground.
It works without the 150K, but the waveform is quite different from the correct version.
I haven't tried them out to see what they sound like yet, who knows...maybe the "wrong" version might sound better. :D
drewl
Breadboard Brother
 
Posts: 85
Joined: 11 Feb 2010, 15:56
Has thanked: 0 time
Have thanks: 2 times

Re: Jordan Bosstone?  [schematic]

Postby Dan N » 18 Feb 2010, 22:28

jrod wrote:
Dan N wrote:There are several schematics, including a known wrong one. Which did you use?


For clarification, please, is this the known wrong schematic? http://schematicheaven.com/effects/jordan_bosstone.pdf

Thanks!


Yes! That is the infamous wrong version.

AG has the right one: http://analogguru.100free.com/193/schem ... sstone.gif

There is also an earlier Alhambra, California NPN/NPN version with a couple parts that need values: http://users.rio.com/senorris/jordanbt/ ... CA%232.gif

I think it's a great sounding fuzz.
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: Jordan - Bosstone

Postby John Lyons » 18 Feb 2010, 22:40

I think there are 4 different versions actually.
Or at least I have 4 different schematics for it
that are all different.
Boss tone rules!
User avatar
John Lyons
Solder Soldier
 
Posts: 188
Joined: 18 Aug 2007, 04:09
Location: West Virginia
Has thanked: 5 times
Have thanks: 26 times

Re: Jordan - Bosstone

Postby johnnyg » 18 Feb 2010, 22:42

John Lyons wrote: Boss tone rules!


I completely agree!

It can get very ratty and nasty sounding - it's borderline distortion with the clipping diodes. It's a lot of fun (if you're into the Stooges kind of thing, you should like it a lot). You get weird oscillation with the attack knob (or whatever it's called) dialed fully one way.

I built mine point-to-point using IvIark's layout on here - viewtopic.php?f=13&t=8193&start=300
Yet to break through the Space Charge
johnnyg
Resistor Ronker
 
Posts: 418
Joined: 31 Oct 2009, 17:57
Has thanked: 102 times
Have thanks: 49 times

Re: Jordan - Bosstone

Postby Dan N » 18 Feb 2010, 23:20

Oh yea, a later Alhambra. Other than the first pot, no mystery parts: http://users.rio.com/senorris/junk/bosstoneCA%3f.gif
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: Jordan - Bosstone

Postby RnFR » 19 Feb 2010, 11:10

build the one that AG's got on his site. it sounds great.















[smilie=bowdown.gif] STOOGES!
"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: 170 times

Re: Jordan - Bosstone

Postby drewl » 19 Feb 2010, 23:18

Wow, I think this one's a keeper!
I built AG's, so far just an output pot, with run of the mill 2n3904's.
it cleans up pretty good when the guitar volume is rolled back and produces some great nasty distortion when cranked with nice overtones and bloomage!
drewl
Breadboard Brother
 
Posts: 85
Joined: 11 Feb 2010, 15:56
Has thanked: 0 time
Have thanks: 2 times

Re: Jordan - Bosstone

Postby Alex Frias » 21 Feb 2010, 22:44

I tried several trannies combination and found low hfe ones offering the best sound!
User avatar
Alex Frias
Resistor Ronker
 
Posts: 268
Joined: 19 Dec 2007, 17:05
Has thanked: 7 times
Have thanks: 13 times

Re: Jordan - Bosstone

Postby Alex Frias » 21 Feb 2010, 23:26

Bu I was talking about the NPN, the Q1, ok?
User avatar
Alex Frias
Resistor Ronker
 
Posts: 268
Joined: 19 Dec 2007, 17:05
Has thanked: 7 times
Have thanks: 13 times

Re: Jordan - Bosstone

Postby RnFR » 22 Feb 2010, 00:20

Alex Frias wrote:Bu I was talking about the NPN, the Q1, ok?

yeah, 2n222's are good.
"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: 170 times

Re: Jordan - Bosstone

Postby fuzzbuzzfuzz » 26 May 2010, 15:41

Interesting thread... :D

I have a Bosstone Clone - build around the GGG JBT board and parts-list, identical in every component, however I`m a little disappointment with the sound.... :?

I don`t own an original for comparison, but I`m judging by this JBT on Youtube:

http://www.youtube.com/watch?v=VK2r0oEPU3s

The build I have has none of the thick octave overtones (which I think are very much part of the Bosstones signature characteristics) and seems much thinner soundwise.

Any ideas why? I checked every component and it seems identical to the JBT...strange!

Thanks :o
fuzzbuzzfuzz
Breadboard Brother
 
Posts: 59
Joined: 11 Dec 2009, 15:57
Has thanked: 1 time
Have thanks: 0 time

Re: Jordan - Bosstone

Postby mikemaddux » 31 May 2010, 22:23

Build it with sag control - great trumpet tones and other stuff

http://www.youtube.com/watch?v=6z5pQIQFOak
mikemaddux
Breadboard Brother
 
Posts: 76
Joined: 08 Feb 2010, 01:00
Has thanked: 0 time
Have thanks: 0 time

Re: Jordan - Bosstone

Postby Alex Frias » 04 Jun 2010, 04:18

Yes, I did it some time ago, just using a 100k pot for the SAG and increase a bit the caps values.

http://www.youtube.com/watch?v=78XVvOXcecY

Otherwise in order to achieve more interesting Jordan Bosstone mild distortion tone I prefer to use low gain trannies and keep the original caps values.
User avatar
Alex Frias
Resistor Ronker
 
Posts: 268
Joined: 19 Dec 2007, 17:05
Has thanked: 7 times
Have thanks: 13 times

Next

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

Who is online

Users browsing this forum: Bing [Bot] and 3 guests