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PostPosted: Wed Feb 07, 2018 8:32 pm 
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I recently completed the Silver Pony and worked on the Optical Compressor today. I will post some photos when I can, but the pedal works only in bypass on first try. I am using an 18 volt adapter. I noticed that the directions for the build show lugs 3 and 6 jumped on the wiring diagram, but it is not mentioned in the written description. I went ahead a jumped them. Is that correct? I also had some difficulty advancing the wire that jumps 4 to 9 because my tinning may have been too thick. To rectify, I soldered the wire to 4 and used a second wire to jump to 9. Is that OK? Any thoughts before I take it apart to photograph my work? Thanks!


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PostPosted: Wed Feb 07, 2018 8:40 pm 
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Neither of your footswitch "irregularities" is a problem. The 4-9 jumper is only active in bypass, so if you have signal there, it must be OK. And the 3-6 jumper just grounds the input to the effect circuit when in bypass; it's good practice to include it, but it's not needed for the pedal to work.

Photos are what we need!

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PostPosted: Wed Feb 07, 2018 10:01 pm 
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It’s amazing what happens when you realize that you reversed the labels for input and output on your pedal. At least the build is solid. :P


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PostPosted: Thu Feb 08, 2018 9:42 am 
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trevenarj wrote:
It’s amazing what happens when you realize that you reversed the labels for input and output on your pedal....

Glad to hear you found the problem. You're certainly not the first to make that mistake! Not that I would admit to any personal experience along those lines.... :oops: :roll:

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PostPosted: Thu Feb 08, 2018 10:10 am 
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Thanks. Now I feel much better!


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PostPosted: Thu Feb 08, 2018 7:21 pm 
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Can the Burr Brown 2604 opa be used in the optical compressor?
Thanks!


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PostPosted: Thu Feb 08, 2018 10:06 pm 
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trevenarj wrote:
Can the Burr Brown 2604 opa be used in the optical compressor?
Thanks!

Sure. Any general purpose dual op amp will work.

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PostPosted: Tue Apr 24, 2018 11:32 am 
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I'm really enjoying this pedal but I notice a slight ringing sound when the controls are turned up. The pedal is stock except for substitution of a Burr Brown 2604 opa. Is the pedal too close to the amp or could this be a component issue? Also, is it best to have my Silver Pony before or after the compressor? I usually keep it on (the compressor) all the time. Thanks!


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PostPosted: Tue Apr 24, 2018 2:45 pm 
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Keep the Pony after the compressor. In general, a compressor should be at or near the beginning of your pedal chain, and definitely before any boosts, overdrives or distortions.

You may find these articles interesting:

https://www.sweetwater.com/insync/what- ... dal-order/

https://www.guitarplayer.com/gear/pedal ... edal-order

https://tonereport.com/blogs/tone-tips/ ... edal-order

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PostPosted: Tue Apr 24, 2018 7:19 pm 
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Thanks. How about the slight ringing sound I have been noticing when the volume is turned up?


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PostPosted: Tue Apr 24, 2018 7:55 pm 
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trevenarj wrote:
How about the slight ringing sound I have been noticing when the volume is turned up?

Not sure. Any chance that you can post an audio clip showing what that ringing sounds like?

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PostPosted: Tue Apr 24, 2018 7:57 pm 
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I'll try. Can I upload it to flicker?


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PostPosted: Tue Apr 24, 2018 8:05 pm 
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trevenarj wrote:
I'll try. Can I upload it to flicker?

You can park it anywhere that allows public access to the sound file.

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PostPosted: Wed Apr 25, 2018 8:43 am 
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I have downloaded a clip to SoundCloud. It starts with the pedal off, then turned on followed by increasing both volume and sustain. I then turn it off again. I have my pedal board on top of my amp. Wanted to let you know in case it could be a feedback issue.
Here is the link: https://soundcloud.com/russell-trevena/compressor-ring

Thanks!


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PostPosted: Tue May 01, 2018 10:37 pm 
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Bump
Hoping someone will listen to the clip and let me know what could be causing the problem.


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PostPosted: Wed May 02, 2018 11:12 am 
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Does the compressor make this noise if you take the silver pony out of your pedal chain completely?

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PostPosted: Wed May 02, 2018 10:54 pm 
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Not an answer to your current question, but an alternative view to this:

duhvoodooman wrote:
Keep the Pony after the compressor. In general, a compressor should be at or near the beginning of your pedal chain, and definitely before any boosts, overdrives or distortions.

Trey Anastasio of Phish famously ran a compressor after two Tube Screamers for years. That was a Ross compressor, a much different beast than the optical, but worth considering. Always let your ears be your guide. (That said, I keep my oticomp before my drives.)

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PostPosted: Sun May 06, 2018 8:12 am 
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What type of power supply are you using? Sensitive pedals react very poorly to cheap power.

Sent from my SM-G960U using Tapatalk


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PostPosted: Thu May 10, 2018 9:30 am 
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I am using a single Dunlop 18v power supply for the pedal. When I remove this and switch to 9v with a One Spot chain, the noise goes away. I guess the Dunlop is not of the best quality(?). Any better choices?


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PostPosted: Thu May 10, 2018 10:49 am 
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Maybe try the Dunlop on 9v if it has that? Could have something to do with the higher voltage, not the supply itself.


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PostPosted: Thu May 10, 2018 11:37 am 
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Definitely compare at 9v first. If 9v is having the same problem, then the problem is the power supply.

If your power supply is lacking in power filtering, you could try some more aggressive power filtering at the pedal itself. You can pull out the 1N4001 and replace it with a .1uF. Use the 1N4001 to connect the positive terminal of the DC adapter jack to the PCB instead of wire. Connect the striped end to the PCB and the other end to the jack. You would do this on the outer + eyelet. And increase the value of the 100uF filter cap. 220uF at least. 330uF or even 470uF if you can find one that will fit.

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PostPosted: Thu May 10, 2018 1:03 pm 
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It's quiet when running at 9v. Only an issue at 18v. The headroom at 9v seems OK so maybe I should stick with it. The power filtering mod that you wrote about would be done only if the pedal is noisy at both voltages, right? By the way, my 9v source is a One Spot and the 18v is a Dunlop adapter.

Thanks!


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PostPosted: Fri May 11, 2018 9:12 am 
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Ah, so the Dunlop does not have 9v? My guess is that a regulated, isolated supply at 18v would be ok. Something ritzy like the Strymon Ojai (that one is very clean). But 9v will work almost as well, probably not noticeable in context,


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PostPosted: Fri May 11, 2018 12:04 pm 
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trevenarj wrote:
It's quiet when running at 9v. Only an issue at 18v. The headroom at 9v seems OK so maybe I should stick with it. The power filtering mod that you wrote about would be done only if the pedal is noisy at both voltages, right? By the way, my 9v source is a One Spot and the 18v is a Dunlop adapter.

Thanks!


Not necessarily. I was assuming the dunlop had separate 9 and 18v taps.

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PostPosted: Sat May 12, 2018 4:10 am 
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Is your 18V PS a wall wart type? If so and it is an unregulated PS that is very likely the cause of your noise problem. To determine whether or not the PS is regulated measure the output voltage of the PS with nothing attached to it. If your reading is a few volts over 18V then you will know it is unregulated. Unregulated PS’s should never be used with any audio circuitry. These types of PS’s are not only unregulated they also have little to no filtration which is why they are so noisy. If the PS is regulated it will have an output that measures within a few tenths of a volt of 18V. It is still possible that the PS is the cause of the noise but less likely if it has a regulated output. To confirm that the noise is not a problem with the pedal try powering it with two fresh 9V batteries in series. Batteries do not hum so any noise you hear from the pedal will be coming from that pedal.

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