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Post by cedarchoper58 on Sept 30, 2022 18:45:56 GMT -5
Im going to try and get away from batteries on my pedals. I use a 1969 Vox V846 wha a 1981 tube screamer TS9 and a korg pitchback tunner. From what i have reaserched the total usesage requirments are around 50ma max. When i use my Boss 200ma wall wart it powers them all but its like the batteries are low sounding. if i use my 1 spot wall wart looking power supply it sounds totaly different than the boss. The one spot has more gain and brightness and less lows. The boss is more bluesy. The Boss walwart sounds like i have batteries around 8v or an extra 30 foot of cable. I have two boss 200ma wall warts and they both sound the same. If im only using a max of 50ma whay do the two power supplys sound different. Thanks
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Post by reverendrob on Sept 30, 2022 19:42:52 GMT -5
Let's go with the obvious: you've been noting this for a while. Try different supplies, hope for the best is one option. The other is rechargeable batteries. Another still is "adjust gain and EQ" - if necessary, add an EQ pedal. A last option is to use batteries, just with something like this to make changing them simple and allow you a "master kill" to keep drain to a minimum: www.sweetwater.com/store/detail/VBPS--vertex-effects-battery-power-supplyThat's pretty much it, other than chasing around a headless chicken. |
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Post by modbus on Sept 30, 2022 20:21:34 GMT -5
I'm not familiar with the Boss 200mA supplies you have, but if they are the older style unregulated power supplies that were in common use back in the day, then they probably don't put out a very good DC signal, even at relatively low loads. The DC output of the old style wall warts looks like this:
There's a lot of "ripple" around a DC voltage that is approximately around what the supply is rated for.
The idea was back in the day to use a cheap power supply that puts out a rough voltage greater than what the device would actually use. The device would then have an on-board regulator of some sort to regulate the voltage down to a clean signal it could actually use. That was the most cost effective way to do things back then.
The trouble with the old style wall warts was that the were pretty inefficient, especially when they were under little or no load.
Nowadays power supplies are like your 1-Spot, which uses a very efficient flyback switch mode power supply that is regulated. It will output a very clean DC signal within a percent or two of stated value throughout its entire ranged of rated current.
So to make a long story short, if your Boss 200mA supply is an old style linear power supply, it is probably putting out a dirty, "ripple-y" DC signal that one of your pedals really doesn't like.
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pdf64
Wholenote
Posts: 557
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Post by pdf64 on Oct 1, 2022 7:13:39 GMT -5
It seems weird for a 60s pedal to have an external power supply socket? eg maybe it’s a mod. Are you sure it’s been implemented correctly, and that it’s compatible with being daisy chained with other fx? eg 60s pedals often used pnp devices with a positive common, rather than later npn devices with a negative common.
I suggest to check the voltage outputs of the various power supplies, with them loaded by your pedals.
The wah battery should last for years. I use rechargables in my other pedals, but there seems no point for super low drain pedals like that.
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Post by cedarchoper58 on Oct 1, 2022 12:34:03 GMT -5
It seems weird for a 60s pedal to have an external power supply socket? eg maybe it’s a mod. Are you sure it’s been implemented correctly, and that it’s compatible with being daisy chained with other fx? eg 60s pedals often used pnp devices with a positive common, rather than later npn devices with a negative common. I suggest to check the voltage outputs of the various power supplies, with them loaded by your pedals. The wah battery should last for years. I use rechargables in my other pedals, but there seems no point for super low drain pedals like that. I use a thing i bought at a guitar store that connects to the battery on the wha and i notched the bottom a tiny bit so it can come out the side and plug into a daisy chain. It looks llke this www.guitarcenter.com/DAddario-Planet-Waves/9V-Effect-Pedal-Power-Adapter-1500000279159.gc?rNtt=batter%20adapter%209v&index=3 |
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Post by reverendrob on Oct 1, 2022 14:52:00 GMT -5
That's NEVER going to get it the voltage it "wants" to see.
Modern alkalines won't either.
It wants (on the wah especially) to see vintage carbon batteries.
Your only choice then is to find one of the adjustable (dial, not fixed amount) adapters like Dano used to sell that let you dial down.
I have a couple for voltage starving fuzzes.
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Post by funkykikuchiyo on Oct 1, 2022 15:22:57 GMT -5
That's NEVER going to get it the voltage it "wants" to see. Modern alkalines won't either. It wants (on the wah especially) to see vintage carbon batteries. Your only choice then is to find one of the adjustable (dial, not fixed amount) adapters like Dano used to sell that let you dial down. I have a couple for voltage starving fuzzes. I thought such a device was common at this point, but maybe not. Shows how much I keep track.
I wonder how easy it would be to DIY such a contraption, or to adapt some generic converter you find on Amazon....
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Post by reverendrob on Oct 1, 2022 15:48:03 GMT -5
They were ubiquitous but didn't sell.
I had both my signature fuzzes built with starves on a dial in them.
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Post by cedarchoper58 on Oct 1, 2022 17:20:09 GMT -5
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Post by Leftee on Oct 1, 2022 17:36:49 GMT -5
Note about ripple on DC
There won’t be any from a battery. 😊
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Post by cedarchoper58 on Oct 1, 2022 18:16:41 GMT -5
Note about ripple on DC There won’t be any from a battery. 😊 what does it do and what is ripple? thks |
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Post by cedarchoper58 on Oct 1, 2022 18:21:43 GMT -5
I'm not familiar with the Boss 200mA supplies you have, but if they are the older style unregulated power supplies that were in common use back in the day, then they probably don't put out a very good DC signal, even at relatively low loads. The DC output of the old style wall warts looks like this:
There's a lot of "ripple" around a DC voltage that is approximately around what the supply is rated for.
The idea was back in the day to use a cheap power supply that puts out a rough voltage greater than what the device would actually use. The device would then have an on-board regulator of some sort to regulate the voltage down to a clean signal it could actually use. That was the most cost effective way to do things back then.
The trouble with the old style wall warts was that the were pretty inefficient, especially when they were under little or no load.
Nowadays power supplies are like your 1-Spot, which uses a very efficient flyback switch mode power supply that is regulated. It will output a very clean DC signal within a percent or two of stated value throughout its entire ranged of rated current.
So to make a long story short, if your Boss 200mA supply is an old style linear power supply, it is probably putting out a dirty, "ripple-y" DC signal that one of your pedals really doesn't like.
My one spot makes a buzzing noise thru my amp even when the guitar volume is on 0 and it is the second one i have gotten that does this. My old wal warts are dead quite. Its not my house because i play out a lot and it does this most everywhere |
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Post by modbus on Oct 1, 2022 19:07:24 GMT -5
I'm not familiar with the Boss 200mA supplies you have, but if they are the older style unregulated power supplies that were in common use back in the day, then they probably don't put out a very good DC signal, even at relatively low loads. The DC output of the old style wall warts looks like this:
There's a lot of "ripple" around a DC voltage that is approximately around what the supply is rated for.
The idea was back in the day to use a cheap power supply that puts out a rough voltage greater than what the device would actually use. The device would then have an on-board regulator of some sort to regulate the voltage down to a clean signal it could actually use. That was the most cost effective way to do things back then.
The trouble with the old style wall warts was that the were pretty inefficient, especially when they were under little or no load.
Nowadays power supplies are like your 1-Spot, which uses a very efficient flyback switch mode power supply that is regulated. It will output a very clean DC signal within a percent or two of stated value throughout its entire ranged of rated current.
So to make a long story short, if your Boss 200mA supply is an old style linear power supply, it is probably putting out a dirty, "ripple-y" DC signal that one of your pedals really doesn't like.
My one spot makes a buzzing noise thru my amp even when the guitar volume is on 0 and it is the second one i have gotten that does this. My old wal warts are dead quite. Its not my house because i play out a lot and it does this most everywhere
You could try something like this:
What you do is loop the output wire of the power supply around one half of the clamp a couple of times, and then close the clamp around the looped wire.
It is essentially a humbucker for the switching noise coming from the 1-Spot's internal switching regulator.
It doesn't give the frequency range for these ferrites on the listing, but they are supposed to be for LED headlights, and I'm pretty sure the frequency of the LED drivers is about the same as a switch mode power supply.
In regards to ripple, old power supplies don't produce a clean, flat DC voltage like a battery does. The output is going to look like a sawtooth wave riding on top of a DC offset. The jagged nature of the waveform is called "ripple".
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Post by Leftee on Oct 1, 2022 19:16:10 GMT -5
Note about ripple on DC There won’t be any from a battery. 😊 what does it do and what is ripple? thks There’s a post about it above. |
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Post by Leftee on Oct 3, 2022 14:53:20 GMT -5
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Post by reverendrob on Oct 3, 2022 20:40:30 GMT -5
Yea, starve knobs are pretty common on some modern fuzzes (both my signature custom designed monsters have it).
OP wants to keep using his vintage stuff.
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Post by Leftee on Oct 3, 2022 20:45:35 GMT -5
I posted that for you, Rob. I’d never noticed these before.
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Post by reverendrob on Oct 3, 2022 21:06:47 GMT -5
Yea, it's relatively tame. This is a "normie" using the design I worked out with my EE friend improving a beloved and rare pedal in my collection I needed a backup for badly as construction quality on the DE stuff is...spotty and wrapped in electrical tape. It gets MUCH crazier than that. Some settings do nothing, there are NO guard rails. The Stomping Stones variant changed a resistor on the input, but is otherwise this design, which is a true one-off with a handmade PCB.  |
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