Saturday, 9 September 2017

Caline CP16 Mark 4

Apparently mimicing Mesa MKIV head's distortion. Hadn't seen this type of distortion control in a pedal before, so i thought this might be a nice addition. Has nice amount of gain and there's room for tweaking.
Update 12.9.2017 - Don't know what was going on in my head with the original layout revision. It had tons of profound errors in it. Now fixed per schematic and let's try this verification thing again...



Posted by at 20:55
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46 comments:

  1. Baldness10 September 2017 at 04:56

    If I can get the honey do list done in time this week end Im going to try to build this. Great lay out. Thanks Mirosol!

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  2. Unknown10 September 2017 at 08:01

    I had one of these. A very rich smooth distortion, but not enough treble.

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    1. 4rny3kv3to17 November 2022 at 17:02

      I have one since years. Socketed D3, D4 diodes and having a red led and an orange led there. I have plenty treble with everything else stock. Also pedal volume increased plenty, slight above half volume mathing the bypassed colume.

      Delete
  3. BlueOysterCult10 September 2017 at 09:14

    I just Built it and it works very well ! As Dylan said, not enough treble. Thanks for this nice layout as usual.

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    1. mirosol10 September 2017 at 11:16

      Cheers. I'll tag it right away.

      For the treble, lower the value of 6n8 or take it out completely. That should affect highs enough.
      +m

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    2. mirosol10 September 2017 at 11:21

      At the time these seems to sell for 25 €/$/£ shipping included. So i might just buy one and swap the cap + mod the visual aspect :)
      +m

      Delete
  4. Baldness11 September 2017 at 04:15

    got it done as well.. sounds great to my ears.

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  5. Alltrax7411 September 2017 at 11:00

    On a side note, there is a typo on the layout, right diode should be D5.
    Thanks Miro I'll give it a try very soon

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  6. Unknown11 September 2017 at 11:12

    There is no D5 on schematics, only two D4's

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    1. Alltrax7411 September 2017 at 11:21

      From the comments "D5 is 1N5817", it's the polarity protection diode on the right ;-)

      Delete
    2. mirosol11 September 2017 at 14:43

      Fixed.
      +m

      Delete
  7. Unknown12 September 2017 at 04:33

    I was wondering if there was a link to a schematic?

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    1. Unknown12 September 2017 at 05:21

      This comment has been removed by the author.

      Delete
  8. Unknown12 September 2017 at 05:27

    I found the schematic but there seems to be some omitted parts. The reason I ask Is I get a cool distortion but the gain 1 is not having any big effect on the signal. And it is not as intense as most of the videos and the output needs to be at about 3/4 for unity. The descriptions say Gain 1 is treble and gain 2 is bass. The parts I am curious about are: C2, C6, C10 are 220n, R1, 3, 6 are 1k, R5 R12 100k. But maybe you made some changes for personal preference as you are quite the wizard. Thanks man, have a great day!

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    1. mirosol12 September 2017 at 06:53

      Now that i look at the layout i'm like whaaat. Yes. Sataurday was quite strong hangover day for me. There are obivious errors at the moment and i'll fix the layout later tonigh once i'm back at the couch...

      Sorry for the inconvenience.
      +m

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    2. Alltrax7412 September 2017 at 08:47

      Good to hear, I built it yesterday evening and was not very happy with it ;-)

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    3. Alltrax7412 September 2017 at 10:02

      From what I see :
      - 100µf filtering cap is missing (I had motorboating on mine)
      - C2 & R3 from pin 2 to Vref are missing
      - C8 is misplaced : positive leg to Vref and negative to 1k from pin 6

      Socketing the 6n8 cap is indeed interesting, or even adding a bright switch with f.e. 1n

      Delete
    4. mirosol12 September 2017 at 10:09

      Lots of wrong in there :) Fix is coming in next 24 hours...
      +m

      Delete
    5. Alltrax7412 September 2017 at 13:04

      I made the changes on my board, what a difference !
      Great thick and tight distortion, a ton of gain, but noisy as hell ! It might get a little better when boxed but will probably remain very noisy (but that could be my build).
      With gain 1 fully opened, I reduced gain 2 until the noise disappeared. Still a great amount of distortion, sounds just a little clearer, mess messy which isn't bad.
      This is tipically the type of pedal on which the gain stays cranked, so I consider replacing gain 1 with a fixed 250k resistor, gain 2 with a fixed 80k resistor (value for which the noise disappears) and only keep 2 controls : level and a bright switch which I may put on a rotary swith with 3 ot 4 positions.
      With my amp, 3n3 sounds very well balanced instead of 6n8

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    6. Claudio12 September 2017 at 13:17

      so what controls did you leave? level and gain 2? plus a switch?

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    7. Alltrax7412 September 2017 at 13:26

      No I only intend to keep level and an Eq switch. Gain will always be set the highest possible without noise, in my build that's gain 1 250k and gain 2 80k fixed resistors

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    8. mirosol12 September 2017 at 15:47

      Redrew the whole thing and removed the verified tag for now...
      +m

      Delete
    9. Alltrax7412 September 2017 at 17:03

      Thanks Miro
      BTW I realize I built mine with B250k pots instead of 50k...dunno why...
      I'll change them and see if it tames the noise

      Delete
    10. mirosol12 September 2017 at 21:37

      :) That's five times the gain from each gain stage, so some of the hiss may be coming from those..
      +m

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    11. Alltrax7414 September 2017 at 08:33

      Right !
      I changed the pots, indeed no more annoying noise but distortion looses some of its spirit compared to what I had, less humpfff :-)
      I think i'll keep my idea of Gain1 fixed 250k and gain 2 fixed 80k and just play with level and tone caps

      Delete
  9. Nerdgod12 September 2017 at 19:46

    Tag it. A little hissy but for high gain acceptable. Thanks so much for all the help!! DVFX
    Ps I added a on off on with a 3.3n middle, 3.3n and a 1n and sounds killer. May up both caps. It is a bit bright with the Lower caps but would be useful with a dark amp. Have a great day!

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  10. Baldness13 September 2017 at 07:09

    holy hell Im getting my ears checked. Sounds so much better than before. Ty for the update!

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  11. Unknown14 September 2017 at 12:11

    Could you help me? Where is the output?

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    1. mirosol14 September 2017 at 12:24

      It says pretty clean on the layout notes: Volume 2 to output.

      This means that you take the output wire from volume pot's middle lug to you bypass switching scheme.
      +m

      Delete
  12. Mr.Baiser14 September 2017 at 20:24

    Has anybody added a tone control or a clipping diode switch? This seems to be a great but simple circuit, but it could need a bit more flexibility...

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  13. Hozy3115 September 2017 at 19:00

    Just built the revised version. Really liking this, thanks miro!

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  14. milubit4 October 2017 at 15:37

    hi folks! need a little help. built this one today and gain1 isn't doing nothing. my first thought was a bad 50k pot but after replace it the issue is the same. tried various fixed resistors and nothing. any ideas?

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  15. fox6 October 2017 at 14:12

    sorry for the dumb question, but what are the blue "cuts"?

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  16. Anonymous18 March 2019 at 19:55

    Can you make 4 gain stages with TL074?

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  17. Marek9 May 2019 at 21:32

    Hi i have problem, can you help me? Everything works fine, but, afther few minutes of playing the volume and gain of pedal has drop down...until it is completly silent. When I change opamp, everything is ok....but for few minutes too...where is problem? (Sorry for my english) I try few lm1458 and many tl072 - everything is same. Is problem in opamp?

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  18. Steve Bjorck19 April 2020 at 16:13

    I know that this is an old circuit but I just built it as I had all of the components - or at least was able to get close the all of them. This might be where it has gone wrong so just wanted to check whether anything specific might be causing my problem - basically it's not distorting, barely driving at all.

    D5 I replaced with a 4001, then with a BAT46 - no change.

    10k resistors replaced with 2 x 4.7k in series.

    6.8nf replaced with 4n7 as per recommendations on here

    2.7nf replaced with 2.2nf

    Gain 1 replaced with 47k resistor and gain 2 uses 47k pot as I only had one pot in my box.

    That's it. There's barely any overdrive at all so curious whether any of those changes would have had a significant impact on the sound?

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    1. Steve Bjorck19 April 2020 at 16:15

      Oh, and 1uF replaced with 1uF non-polar electrolytic

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    2. ManicStrat211220 May 2020 at 09:05

      could be a faulty op amp. I've had that problem a few times with different builds not distorting. Check for solder bridges n such and if everything is testing out ok and still no drive....try a different ic.

      Delete
    3. Steve Bjorck20 May 2020 at 09:16

      I've replaced the IC and added a socket just to be sure it wasn't a heat issue when soldering. It's worth another go I suppose, I've got plenty of 4558's kicking around...failing that I'll just buy the original :D

      Delete
  19. ManicStrat211220 May 2020 at 09:03

    This comment has been removed by the author.

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  20. Fred Russom24 May 2020 at 03:29

    This pedal sounds pretty fuckin great..
    TLO72 and no 6.8 cap sounds even better.

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  21. 4rny3kv3to8 November 2022 at 16:12

    This comment has been removed by the author.

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  22. Garvan20 January 2023 at 05:09

    Changed the 6.8 to 15n (or 20n?) and added a 50K pot in-line with it, pot at 50K blocks the cap so it is full treble, pot at 0K is treble rolled off. Huge usability improvement. Also added a framus mid cut knob because this pedal sounded all midrange to me, but with that, sounds very balanced from low to high. Used LM1458, so works well with that IC too.

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