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mindtwist07
Copper Member
Philippines
24 Posts |
 Posted - 05/11/2009 : 17:57:50
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Hi! I have my ds-1 modded to a keeley ultra.my question is does the opamp have any effect on the sound?Mine has a TA type serial and its made in taiwan, any suggestions or advices? my friend suggested a jrc 4558 type of IC.Im looking for a warm distortion that is not to harsh mine's a bit brittle and when the dist knobs goes to full it sounds fuzzy and has a lot of hisses.I have seen a lot in this forum changes in the IC's of the Ds-1 from time to time.Thanks and cheers! |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 05/11/2009 : 18:47:34
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Putting in a 4558L will change the tone. What you think of the change, however, will be up to your ears...
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Edited by - Laurie on 05/11/2009 18:47:55 |
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zentropa
Gold Member
USA
837 Posts |
Posted - 05/12/2009 : 00:05:43
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swapping back to the original DS-1 Toshiba TA7136AP op amp will make it sound more organic.
that's my favorite of the DS-1 versions. the current one is the thinnest sounding but has more boost than the 2 op amps that happened before it.
changing it to a 4558 type will decrease the gain by a significant margin but increase its "bite." |
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Goran
Double Platinum Member
Sweden
2203 Posts |
Posted - 05/12/2009 : 06:55:30
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If you mod a DS-1 try to use an old as possible, even MIT from up in 19994 has the �right� ones. And those MIT�s are often cheap on the market.
By the way, I have since a couple of years a Stinkfoot modded DS-1 and I really love that pedal, it�s more an overdrive than a distortion.
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mindtwist07
Copper Member
Philippines
24 Posts |
Posted - 05/14/2009 : 17:28:20
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Laurie:
changing the tone is also what I'm after in the change of op amp chips of the boss ds-1 and then modding it, because the stock one does not suit the sound I need and its way to trebly when it gets to 12 o clock and lower than that its way more bassier.I saw a you tube video of an ultra mod ds-1 and i like the sound though i can't seem to find that sound in my ds-1 even it is already modded so my hunch is the change of op amp will be the only solution.Thanks!
zentropa:
thanks man.the jrc4558 is now out of the window for me that's for sure,I got the wrong idea. I don't want to decrease the gain. I wanted to add more gain that will add some punch to the pedal.DS-1 op amps seems to change every year the reason I'm asking whats the best op amp for the ds-1.
Goran:
The ds-1 I have is an old one its a heavily used pedal i assume..I dont know when it was made, the color is already faded and i have no idea if some parts are replaced the only clue i have is the op amp.
I'll tell you guys soon whats the op amp serial number i dont have the pedal yet right now its still in the hands of my friend who's finishing modding the pedal. Thanks for the replies! |
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cctsim
Silver Member
United Kingdom
418 Posts |
Posted - 05/14/2009 : 21:05:13
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One thing to remember with mods on new DS-1 is the optimization of R39 and R40. There is the diode D8 too.
These 3 components were not present in older DS-1s and they do have a significant effect on the sound. Just swapping op-amps may not achieve the desirable effects on its own. |
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Little_Buster
Copper Member
USA
15 Posts |
Posted - 05/14/2009 : 22:25:52
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quote:
Originally posted by Goran
If you mod a DS-1 try to use an old as possible, even MIT from up in 19994 has the �right� ones. And those MIT�s are often cheap on the market.
By the way, I have since a couple of years a Stinkfoot modded DS-1 and I really love that pedal, it�s more an overdrive than a distortion.
MIT one's are usually cheap.
The most expensive one ive seen was $50. |
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moonmarkcus
Silver Member
Nicaragua
224 Posts |
Posted - 05/15/2009 : 19:33:12
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Hi everybody, MIJ STOCK (NO MOD)DS-1 with TA7136AP was one of the best DS-1 I have heard...In my opinion it doesnt need any mod and tone is excelent ( for me)
But...
You can try using a IC Socket in order to test with severals Line in Opamps like BA728N or NJM3404, or a RC4558L. I have a really nice Marshall tone on a DS-1, I changed Opamp to RC4558L and use a combination of Germanium and Silicon Diodes with others components changes ( Thank You CCSTSIM )
Let your hear guide to find your desirable tone, but you need to have a reference tone or sound color in order to known what is the right mod for you... Dont expect to obtain for example a Bluesy sound from DS-1 with Keeley Mod... |
Edited by - moonmarkcus on 05/15/2009 19:36:20 |
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DS-1 mod question
