Keeley Compressor C4 [gut shot]  [traced]

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Re: Keeley Compressor C4 [gut shot]

Postby sadrew » 08 Sep 2009, 08:56

sevinisthenumber wrote:Were do i place the pre gain knob into the circuit? Use a 100ka pot on the input as a variable resistor?


bump
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Re: Keeley Compressor C4 [gut shot]

Postby gkoerselman » 08 Sep 2009, 10:03

I assume that with the 'pre gain' you actually mean the 'clip' control (which is sometimes called 'clipping' or 'trim' I believe on the actual enclosures)...

This clip control is the 150k shown in my diagram connected by pad P1A-B and P2A-B.
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Re: Keeley Compressor C4 [gut shot]

Postby irmcdermott » 18 Feb 2011, 02:03

So the trimmers are still in there? As well as the external pots? I'm just a little confused reading through the thread.
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Re: Keeley Compressor C4 [gut shot]

Postby seedseed » 31 May 2011, 10:12

Any verified schematics on this seems to be lying dormant
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Re: Keeley Compressor C4 [gut shot]

Postby bubstance » 31 May 2011, 11:13

It's a Ross clone, so any Ross layout/schematic will do just fine. Also: http://freestompboxes.org/viewtopic.php?f=7&t=4860#p64200.
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Re: Keeley Compressor C4 [gut shot]

Postby seedseed » 31 May 2011, 13:20

Yeah but for all the hype i've heard about this pedal it can't be exactly the same with all components there has to be some form of variation. I'd like to know what it is.
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Re: Keeley Compressor C4 [gut shot]

Postby WhiteKeyHole » 31 May 2011, 14:20

So buy one and be sure to tell us your findings.
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Re: Keeley Compressor C4 [gut shot]

Postby bubstance » 31 May 2011, 20:53

seedseed wrote:Yeah but for all the hype i've heard about this pedal it can't be exactly the same with all components there has to be some form of variation. I'd like to know what it is.

Don't trust hype. Remember the hype about the CJOD? Turns out that wasn't very different. Remember the Saffron Squeeze? That was a Ross too.

Hype =/= different.
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Re: Keeley Compressor C4 [gut shot]

Postby seedseed » 03 Jun 2011, 10:15

Yeah no worries whitekeyhole with your money hahhaha
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Re: Keeley Compressor C4 [gut shot]

Postby gormangox » 07 Jun 2011, 18:53

Fast attack (or recovery) is when the resistor is set to "near zero value" or when the resistor is 150K?
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Re: Keeley Compressor C4 [gut shot]

Postby gormangox » 07 Jun 2011, 19:15

When that resistor is set to 10K I can hear only a little bit more volume but I can't see differences in the attack of the compression....
Can you explain to me which differences I should hear from a 150K to a 10K?
Which sound test can I make (playing the guitar) to hear better this difference?
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Re: Keeley Compressor C4 [gut shot]

Postby WhiteKeyHole » 07 Jun 2011, 23:15

seedseed wrote:Yeah no worries whitekeyhole with your money hahhaha


:|
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Re: Keeley Compressor C4

Postby The Rotagilla » 08 Jun 2011, 06:10

Crimson wrote:Sustain pot: are you sure is reverse log?


Yes.
The television will not be revolutionized.
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Re: Keeley Compressor C4 [gut shot]  [traced]

Postby IvIark » 21 Jul 2012, 16:39

Currently unverified but I'll let you know when that changes. Instead of using two 1K resistors I left the trimmer used in the Dyna Comp and Ross Comp in place, so if you leave it in its middle setting that would replicate the C4 with the added advantage of being able to fine tune the extremes of the Clip control.

Image
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Re: Keeley Compressor C4 [gut shot]

Postby Xavier » 21 Jul 2012, 20:49

Many thanks for this one (and ALL the rest), Ivlark !!!. What a monster job...........
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Re: Keeley Compressor C4 [gut shot]

Postby Ang3lus » 22 Jul 2012, 07:32

yeah, thanks for this one :D

been wanting to try the keeley for ages.
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Re: Keeley Compressor C4 [gut shot]

Postby IvIark » 29 Jul 2012, 02:26

The vero has been verified so it's safe to build :mrgreen:
"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

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Re: Keeley Compressor C4 [gut shot]

Postby pedalgrinder » 30 Jul 2012, 09:42

great vero and thanks for the contribution but it's still not a verified keeley we still have no idea what's in and before someone says there fav comment of go buy it. We should do a tracers fund and contribute $10 bucks each so we all put in. I'll put in $10 anyone else up for it.
What's the best thing about fat chicks and scooters? There both fun to ride around until your mates find out!
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Re: Keeley Compressor C4 [gut shot]

Postby IvIark » 30 Jul 2012, 10:21

If we bought one via the tracers fund we'd end up with exactly the same gut shot as you already have on page 1 of this thread. So this is no more and no less verified than any other pic > trace > schematic > layout on the site. In fact the quality of the gut shot with trace and BOM by vietpham, this is likely to be more accurate than some of our other traces.
"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
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Re: Keeley Compressor C4 [gut shot]

Postby IvIark » 30 Jul 2012, 11:25

Just as a follow up to that, here's the gutshot with the missing resistor values:

Image

Looks pretty accurate to me so I'm not too sure what else we could be missing.
"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
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