Knowledge about the "One-Spot" adapter.

born

New member
Can u guys share some knowledge on "One-Spot Adapter". Tips and advices. Product Suggestions. Can a normal adapter (9v,600mA) be use to fix to a daisy chain to power up more than 5 pedals? Or anything sweet abt "One-Spot". =)
 
one-spot is the way to go to power your pedals without shelling big bucks.

works and does it job well i suppose, supports 8 or more i guess.

try

crumpler park adaptor, local from this dude, i've used it for 1 year+ no problems, no noise.

can't seem to find his website now, but pm me for his contact.

about 30+ for the whole set. (adpator, daisychan)
 
one spot is like a cow, it does what it does as an adaptor to power up multiple pedals. Theres nothing sweet about it.

Some people dont like it coz it get hissy/noisier as you connect more pedals, some people use it and dont really hear the noise/hiss

a normal dc 9v adaptor with 600ma, shud be able to use dc chain and power up various pedals(provided all the pedals require dc and not ac adaptor). Important thing here is the current drawn from all the pedals add up together, shud not exceed the 600ma rating. If exceeded, basically its like making the adaptor overwork when it cannot supply the juice. Death is the only way out for the adpator!
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and if you wanna ask how can we know how much current draw for the pedals. Heres a site that might be useful. Look around that site, it has quite a bit of info on power supply for pedals

http://www.stinkfoot.se/andreas/diy/power/list.htm
 
Some of the cheap and crappy 9v adapters you buy in the neighborhood shop don't have regulators so they might be putting out more than 9v.
 
1-spot and MM4

Since we're on the 1-spot, any idea whether one 1-spot can power up a line6 MM4 in a chain like this: LU20>3 drive pedals>RC booster>MM4>CE2 comfortably?
 
Some people dont like it coz it get hissy/noisier as you connect more pedals, some people use it and dont really hear the noise/hiss
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Incorrect diagnosis. The one spot is not in the audio chain. Chaining effects units in series increases the noise floor, the power supply is not in the audio chain. Each typpical floor effects unit may have a noise floor of say -55dB at 1 khz , chain two and that floor level increases, chain three units and increases further.
 
Incorrect diagnosis. The one spot is not in the audio chain. Chaining effects units in series increases the noise floor, the power supply is not in the audio chain. Each typpical floor effects unit may have a noise floor of say -55dB at 1 khz , chain two and that floor level increases, chain three units and increases further.

Not quite there buddy .... "A switched-mode power supply, switching-mode power supply or SMPS, is an electronic power supply unit (PSU) that incorporates a switching regulator. While a linear regulator uses a transistor biased in its active region to specify an output voltage, an SMPS actively switches a transistor between full saturation and full cutoff at a high rate. The resulting rectangular waveform is then passed through a low-pass filter (typically an inductor and capacitor) to achieve an approximated output voltage. Advantages of this method include smaller size, better power efficiency, and lower heat generation. Disadvantages include the fact that SMPSs are generally more complex than linear supplies, generate high-frequency electrical noise that may need to be carefully suppressed, and have a characteristic ripple voltage at the switching frequency." WIKI

For dirt pedals ...it gets in the audio !!

As a pedal buider i do not recommend 'one spot' ar any switchmode type power supply as they not only induce hum and noise but tend to kill the character of a pedal.

If 'one spot' you fancy, DO NOT USE with boosters. gain, swell or dirt type pedals....imo ... just use battery or a regulated 'isolated' transformer based power supply. Yup ...it's pricey...too bad aye!
 
gsonique

A Switchmode supply is built in with suppression caps as is a traditional linear transformer. The caps filter off high frequencies that are not in the audio chain, but which can be induced as interference. Hum is not a high frequency sound, it is low, and it is not in the audio chain but is an induced interference as is high frequency interference. A switchmode supply made for computers will not suppress high frequencies as does a switchmode supply made of MI use.
 
Modern, well designed switch mode power supplies are fine for audio. A crap linear supply will be noisy and have ripple in the audio band.
 
i've been using Sim Lim's switch mode power supplies for many years.

one thing though, I get slight electrocution sometimes with it. bzzzt bzzzt... but its works and its got variable voltage... dying batter anyone? hahahaha
 
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