Kingsley - Minstrel  [traced]

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.

Kingsley - Minstrel

Postby culturejam » 28 Mar 2011, 06:08

http://www.kingsleyamplifiers.com/jester/minstrel.html

Sound pretty bad-ass, and the build quality looks really solid.

Snagged this photo off TGP.

////
You do not have the required permissions to view the files attached to this post.

For this message the author culturejam has received thanks: 2
Ippon (06 May 2011, 02:04), jb351 (28 Mar 2011, 13:44)
User avatar
culturejam
Old Solderhand
 
Posts: 4263
Joined: 24 Feb 2008, 06:59
Has thanked: 462 times
Have thanks: 580 times

Re: Kingsley - Minstrel

Postby Greg » 28 Mar 2011, 07:07

It's a stripped down version of this: http://www.freestompboxes.org/viewtopic.php?f=7&t=6331&hilit=kingsley

IMO it's a lot of pedal for the price.
Great build quality and sounds.
culturejam wrote: We are equal opportunity exposure artists.

For this message the author Greg has received thanks:
Ippon (06 May 2011, 02:06)
User avatar
Greg
Old Solderhand
 
Posts: 3319
Joined: 03 Nov 2007, 10:35
Location: Australia
Has thanked: 77 times
Have thanks: 195 times

Re: Kingsley - Minstrel

Postby mmolteratx » 06 May 2011, 01:43

Here's my gut shot:

DSC_0022.jpg


And a preliminary schematic minus switching, pots and power supply is attached.

schematic removed - new schematic is below
You do not have the required permissions to view the files attached to this post.

For this message the author mmolteratx has received thanks: 5
bubstance (06 May 2011, 01:53), culturejam (06 May 2011, 02:58), Greg (06 May 2011, 01:48), Ippon (06 May 2011, 02:03), jb351 (06 May 2011, 19:03)
mmolteratx
Degoop Doctor
 
Posts: 510
Joined: 19 Dec 2009, 02:50
Has thanked: 103 times
Have thanks: 625 times

Re: Kingsley - Minstrel

Postby mmolteratx » 06 May 2011, 03:27

I believe this is the whole thing, though the power supply looks a bit odd to me. The resistor labeled ??? is a metal oxide with grey-brown-gold-gold.


Mod edit: old schematic removed

For this message the author mmolteratx has received thanks: 2
culturejam (06 May 2011, 04:01), WhiteKeyHole (06 May 2011, 03:46)
mmolteratx
Degoop Doctor
 
Posts: 510
Joined: 19 Dec 2009, 02:50
Has thanked: 103 times
Have thanks: 625 times

Re: Kingsley - Minstrel

Postby WhiteKeyHole » 06 May 2011, 04:04

I don't know if I'm just misunderstanding your drawing but the switching seems suspect.
WhiteKeyHole
Cap Cooler
 
Posts: 552
Joined: 05 Apr 2008, 05:38
Has thanked: 41 times
Have thanks: 231 times

Re: Kingsley - Minstrel

Postby mmolteratx » 06 May 2011, 04:12

That's just a drawing of how things are hooked up to the switch. It's got 3 positions. In position 1, the two left lugs are connected, position 2 the two middle lugs are connected and position 3 the two left lugs are connected. I'll get bigger pics tomorrow if you want to look them over.
mmolteratx
Degoop Doctor
 
Posts: 510
Joined: 19 Dec 2009, 02:50
Has thanked: 103 times
Have thanks: 625 times

Re: Kingsley - Minstrel

Postby WhiteKeyHole » 06 May 2011, 04:14

Are you sure that the 82K does not go to the middle two lugs (connected) on "top"?

For this message the author WhiteKeyHole has received thanks:
mmolteratx (06 May 2011, 04:19)
WhiteKeyHole
Cap Cooler
 
Posts: 552
Joined: 05 Apr 2008, 05:38
Has thanked: 41 times
Have thanks: 231 times

Re: Kingsley - Minstrel

Postby mmolteratx » 06 May 2011, 04:14

Actually, scratch that. The leftmost bottom lug is connected to the lug second from right in that row rather than directly to ground.
mmolteratx
Degoop Doctor
 
Posts: 510
Joined: 19 Dec 2009, 02:50
Has thanked: 103 times
Have thanks: 625 times

Re: Kingsley - Minstrel  [traced]

Postby mmolteratx » 06 May 2011, 04:18

Nevermind. That wouldn't make a difference. I just opened it up and it's connected as you described. New file attached.
You do not have the required permissions to view the files attached to this post.

For this message the author mmolteratx has received thanks: 12
bubstance (06 May 2011, 05:28), culturejam (23 May 2011, 13:35), Fredenando (19 Sep 2011, 18:50), Intripped (10 Sep 2011, 16:40), mcaviel (07 May 2011, 10:29), modman (14 Sep 2011, 07:55), rocklander (19 Sep 2011, 04:28), roseblood11 (19 Sep 2011, 23:30), Swamp (07 May 2011, 10:38), WhiteKeyHole (06 May 2011, 04:21) and 2 more users
mmolteratx
Degoop Doctor
 
Posts: 510
Joined: 19 Dec 2009, 02:50
Has thanked: 103 times
Have thanks: 625 times

Re: Kingsley - Minstrel

Postby WhiteKeyHole » 06 May 2011, 04:18

Yeah, makes more sense now. Good work and thanks!
WhiteKeyHole
Cap Cooler
 
Posts: 552
Joined: 05 Apr 2008, 05:38
Has thanked: 41 times
Have thanks: 231 times

Re: Kingsley - Minstrel

Postby bubstance » 06 May 2011, 05:37

mmolteratx wrote:The resistor labeled ??? is a metal oxide with grey-brown-gold-gold.

8.1R?

For this message the author bubstance has received thanks:
mmolteratx (06 May 2011, 06:51)
bubstance
Solder Soldier
 
Posts: 177
Joined: 07 Jul 2009, 04:10
Has thanked: 80 times
Have thanks: 112 times

Re: Kingsley - Minstrel

Postby mmolteratx » 06 May 2011, 05:44

That seems about right. It just needs to drop the voltage down to around 6.3V for the heaters. With 600ma of heater current for 2 12AX7s it should be around 8-10 ohms I think. Thanks!
mmolteratx
Degoop Doctor
 
Posts: 510
Joined: 19 Dec 2009, 02:50
Has thanked: 103 times
Have thanks: 625 times

Re: Kingsley - Minstrel

Postby mictester » 06 May 2011, 06:24

mmolteratx wrote:I believe this is the whole thing, though the power supply looks a bit odd to me. The resistor labeled ??? is a metal oxide with grey-brown-gold-gold.


The resistor looks like 8.1 ohms.
"Why is it humming?" "Because it doesn't know the words!"

For this message the author mictester has received thanks:
mmolteratx (06 May 2011, 06:51)
User avatar
mictester
Old Solderhand
 
Posts: 2877
Joined: 11 Sep 2008, 21:29
Location: In the hills of North London
Has thanked: 32 times
Have thanks: 790 times

Re: Kingsley - Minstrel

Postby vai0306 » 23 May 2011, 09:05

Hi,

please,

-could you tell me where to be connected v1 and v2?

-what kind of switch?

thanks 1000
vai0306
 
Posts: 3
Joined: 08 Jul 2009, 16:56
Has thanked: 0 time
Have thanks: 0 time

Re: Kingsley - Minstrel

Postby Frabbio » 12 Sep 2011, 11:40

Hi guys, i've developed a layout with tubes and trafo onboard for this pedal, but i still have some uncertainties:
the trasformer is 2x115 in series and 2x7 in parallel? Is this made to have a greater anodic voltage?
The switch is a 2P3T?
However here is my layout for EAGLE cad
http://www.megaupload.com/?d=ZOES85FF

For this message the author Frabbio has received thanks:
modman (14 Sep 2011, 07:55)
Frabbio
Breadboard Brother
 
Posts: 75
Joined: 27 Jul 2010, 14:25
Has thanked: 10 times
Have thanks: 75 times

Re: Kingsley - Minstrel

Postby Frabbio » 18 Sep 2011, 13:17

Hi there, i revised the pcb, which is now 10.3 x 10 cm single sided, and i decided to use the pcb version of the original transformer (talema 70100).
Aparts from pots, jacks and switches, everything else is on board. Corrections or suggestions are welcome.
Image

Schematic+ layout rev4
http://www.megaupload.com/?d=AWE5SZ70

For this message the author Frabbio has received thanks:
mmolteratx (18 Sep 2011, 18:12)
Frabbio
Breadboard Brother
 
Posts: 75
Joined: 27 Jul 2010, 14:25
Has thanked: 10 times
Have thanks: 75 times

Re: Kingsley - Minstrel

Postby mmolteratx » 18 Sep 2011, 18:13

Wow! That's awesome.
mmolteratx
Degoop Doctor
 
Posts: 510
Joined: 19 Dec 2009, 02:50
Has thanked: 103 times
Have thanks: 625 times

Re: Kingsley - Minstrel

Postby looseEelBalls » 19 Sep 2011, 03:37

good job on the artwork!

I have a couple of concerns on the layout, however. With the toroidal transformer being placed where it is on the PCB layout, wouldn't you have noise issues with transformer flux interfering with the preamp tubes? Also, I'm wondering about the heater supply. Any thoughts about noise from the turret/point to point/handwiring crowd?
looseEelBalls
 
Posts: 12
Joined: 28 Jun 2010, 06:19
Has thanked: 0 time
Have thanks: 4 times

Re: Kingsley - Minstrel

Postby Frabbio » 19 Sep 2011, 05:48

I decided to make this layout because i've almost filled my pedalboard, and i can't assure it would not be noisy. Toroidal transformer flux is for the most part confined inside, but in case it hums nothing says it can't be separed from pcb :) . Imho building on pcb is the better solution for noise, but it surely doesn't have that unobtainium mojo thing :lol:
Your concern about the heater supply is regarding noise or something else?
Frabbio
Breadboard Brother
 
Posts: 75
Joined: 27 Jul 2010, 14:25
Has thanked: 10 times
Have thanks: 75 times

Re: Kingsley - Minstrel

Postby mmolteratx » 19 Sep 2011, 23:12

Hmm. There might be issues with the heater wiring. You might have to rectify and regulate them or modify the routing. I just mod amps though so I'm not sure.
mmolteratx
Degoop Doctor
 
Posts: 510
Joined: 19 Dec 2009, 02:50
Has thanked: 103 times
Have thanks: 625 times

Next

Return to Boutique Stompboxes dissected...

Who is online

Users browsing this forum: No registered users and 2 guests