Jackson-Charvel JE-1500 Parametric preamp complete
- rcustoms
- Resistor Ronker
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round and round on my junk box ,i pick up this
- rcustoms
- Resistor Ronker
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- rcustoms
- Resistor Ronker
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enjoy with that
- rcustoms
- Resistor Ronker
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- andregarcia57
- Cap Cooler
this project is similar to EMG PA2 Booster?
- rcustoms
- Resistor Ronker
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I think not because it has a parametric eq and you can play with a couples of variations ,see the article
Hello,rcustoms wrote:I think not because it has a parametric eq and you can play with a couples of variations ,see the article
Well done rcustoms! I could not find dual switch in electronic stores. I only got a stereo pot at the link below.
http://grupmarketim.com/urun.asp?katego ... runid=1486
Does it work?? And what is the 250p? Capasitor?
- rcustoms
- Resistor Ronker
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yeah mr askwho, its a stereo pot (many bass guitar use that pots with center tapped, for mix their mics)
- Dirk_Hendrik
- Old Solderhand
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Quickie since I don't like layouts without explanatory schems:
- Dirk_Hendrik
- Old Solderhand
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No. You don't . You're going to try the pot you posted here: http://grupmarketim.com/urun.asp?katego ... runid=1486 first and it will work for you. I do not see why it should be wrong as Askwho suggests.gmulak wrote:Thank you all rcustoms and askwho69 ..I 'll try it with two 50k pots first..
cheers..
For this application, or better, for a proper response, the pot needs to be stereo. Two mono pots will give a crappy control.
You want a linear pot curve. That's the "B" for most Japanese pots like Alphas. You do not want a log curve, the "A" unless you wire the pot for center frequency increase when dialing counterclockwise (the other way around). In the ideal case you use a "C" taper. That's reverse log.
This tonecontrol is rather similar to the parametric mid in the Ibanez ST9 supertube:
http://www.dirk-hendrik.com/temp/ibanez_st9.pdf
- Dirk_Hendrik
- Old Solderhand
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Rcustoms,
Are you sure that 1n cap is not a 10n cap? Would make far more sense.
Are you sure that 1n cap is not a 10n cap? Would make far more sense.
So Do I need a stereo dual 50k reverse log pot?Dirk_Hendrik wrote:No. You don't . You're going to try the pot you posted here: http://grupmarketim.com/urun.asp?katego ... runid=1486 first and it will work for you. I do not see why it should be wrong as Askwho suggests.gmulak wrote:Thank you all rcustoms and askwho69 ..I 'll try it with two 50k pots first..
cheers..
For this application, or better, for a proper response, the pot needs to be stereo. Two mono pots will give a crappy control.
You want a linear pot curve. That's the "B" for most Japanese pots like Alphas. You do not want a log curve, the "A" unless you wire the pot for center frequency increase when dialing counterclockwise (the other way around). In the ideal case you use a "C" taper. That's reverse log.
This tonecontrol is rather similar to the parametric mid in the Ibanez ST9 supertube:
http://www.dirk-hendrik.com/temp/ibanez_st9.pdf
How can I find it? Could you send me a link to purchase?
- Dirk_Hendrik
- Old Solderhand
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Ideally, yes. Otherwise use the linear you liked already.
I "always" make these combining the top of a dual log pot with the reverse log deck from a single pot.
I "always" make these combining the top of a dual log pot with the reverse log deck from a single pot.
- rcustoms
- Resistor Ronker
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i re-check again and the label show(102j) means .001 uf,i copy the circuit exactly .Dirk_Hendrik wrote:Rcustoms,
Are you sure that 1n cap is not a 10n cap? Would make far more sense.
thanks anyway for the schematics
- Dirk_Hendrik
- Old Solderhand
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Innawesting.rcustoms wrote:i re-check again and the label show(102j) means .001 uf,i copy the circuit exactly .Dirk_Hendrik wrote:Rcustoms,
Are you sure that 1n cap is not a 10n cap? Would make far more sense.
thanks anyway for the schematics
Thanks for the verification!
- Dirk_Hendrik
- Old Solderhand
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What's your location? (Which country do you live in that is)
Might help to point you out to a supllier in your region. Otherwise they're being sold at, for instance, www.futurlec.com.
Might help to point you out to a supllier in your region. Otherwise they're being sold at, for instance, www.futurlec.com.
Finally, I prepared the preamp. I used LF442 instead of the original one..I don't know what it's gonna happen but I'm excited I'm waiting the cargo including dual pots and LM4250 (my nightmare).. Thanks for the help guys..
Cheers..
Cheers..
- Dirk_Hendrik
- Old Solderhand
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askwho69 wrote:I think lm4250 is single opamp.. you cant used it in this circuit.. or else make another layout that has 2 lm4250...gmulak wrote:Finally, I prepared the preamp. I used LF442 instead of the original one..I don't know what it's gonna happen but I'm excited I'm waiting the cargo including dual pots and LM4250 (my nightmare).. Thanks for the help guys..
Cheers..
Why can't you use a single opamp in a circuit that uses... a single opamp?