Author Topic: RandyMarsh's DIY Pedal Mods (Two New Pedals In the Works) (Read 64805 times)

randymarsh · « **on:** November 16, 2008, 04:17:33 PM »

Share ko lang

Kakatamad kasi tuwing weekends eh. Hehehe.

Page 1 - SD-1 mod
Page 2 - CS-3 mod
Page 3 - GE-7 mod
Page 4 - Proco rat Clone - The Splat Rat
Page 5 - Ibanez TS808 Clone - El Grapadura
Page 6 - Marshall Bluesbreaker Clone -"YBMB"
Page 7 - Duncan Coffee Distortion
Page 7 - Zendrive Clone ni Aling Minda
Page 8 - Vox V847 Wah Mods
Page 9 - Vox Satchurator True Bypass Mod
Page 9 - Boss XT-2 Xtortion Mods
Page 10 - Boss MT-2 Metal Zone Mods
Page 11 - How to Mod Pedals
Page 11 - Boss CE-5 Wet/Vibrato Mod

Clarify ko lang din na hindi ako tumatanggap ng mods and I'm not planning to turn this into a business anytime soon. Masyadong malakas kumain ng oras ang pag mod ng pedal pero rewarding naman pag natapos na.

Ang maganda pa dito, by swapping components around pwede mo i-customize yung pedal to sound just the way you like it.

Bill of Materials

1 x Boss SD-1 - poor SD one, fresh from the store ni-reyp na agad

3 x 0.1µF capacitor
2 x 1µF capacitor
1 x 620k resistor
1 x 2k2 resistor
1 x Burr Brown OPA2134PA IC
1 x IC socket

Capacitors and Resistors

Kinausap ko yung nasa electronics shop at sabi niya mas ok for audio applications ang metal film capacitors and resistors. Sinubukan ko yung monolytic tsaka metal film capacitors, mas ok nga yung metal film IMO. Yung ceramic di ko na sinubukan. Sa resistor naman, metal film lang yung nabili ko.

Instructions

Replace C2, C3, and C8 to 0.1µF
Replace C7 and C10 to 1µF
Replace R2 to 620K
Replace R6 to a 2K2
Replace U1 to Burr Brown OPA2134PA + IC socket

Ginawa kong socketed yung U1 para kung trip ko lang ibalik uli sa JRC4558d sisiw lang.

Final Product

Sayang hindi ko na-record yung stock SD-1 para sana may comparison. Pero sa mod na ito mas naging hi-gain yung pedal, luminis at medyo quieter and tunog niya.

sound clip!
0:00 - 0:07 - clean amp (lc15r)
0:07 - 0:27 - clean amp + modded sd-1 all knob 12 o' clock
0:27 - 0:38 - overdriven amp (lc15)
0:38 - 1:17 - overdriven amp + modded sd-1 all knob 12 o' clock

Cost
1 brand new sd-1 - $99.00
caps + resistors - $10.00
OPA2134PA IC - $8.00

Total - $117.00 (Php 3600)

enjoy

randymarsh · « **Reply #1 on:** November 16, 2008, 07:55:06 PM »

more mod!!!
more volume and better tone control sweep.

steps
remove C6
replace D4 and D6 with LED
replace check LED with keeley blue LED

soundclip no 2 !

0:00 - 0:05 - clean amp
0:06 - 0:14 - clean amp + modded sd1 all knobs at 12 o clock
0:14 - 0:30 - overdriven amp
0:30 - end of clip - overdriven amp + modded sd1 all knobs at 12 o clock

compare nyo sa first clip, rinig nyo agad yung difference

kawayan_strat · « **Reply #2 on:** November 16, 2008, 11:42:18 PM »

Quote from: randymarsh on November 16, 2008, 04:17:33 PM

Share ko lang Kakatamad kasi tuwing weekends eh. Hehehe.

Bill of Materials

1 x Boss SD-1 - poor SD one, fresh from the store ni-reyp na agad
3 x 0.1µF capacitor
2 x 1µF capacitor
1 x 620k resistor
1 x 2k2 resistor
1 x Burr Brown OPA2134PA IC
1 x IC socket

Capacitors and Resistors

Kinausap ko yung nasa electronics shop at sabi niya mas ok for audio applications ang metal film capacitors and resistors. Sinubukan ko yung monolytic tsaka metal film capacitors, mas ok nga yung metal film IMO. Yung ceramic di ko na sinubukan. Sa resistor naman, metal film lang yung nabili ko.

Instructions

Replace C2, C3, and C8 to 0.1µF
Replace C7 and C10 to 1µF
Replace R2 to 620K
Replace R6 to a 2K2
Replace U1 to Burr Brown OPA2134PA + IC socket

Ginawa kong socketed yung U1 para kung trip ko lang ibalik uli sa JRC4558d sisiw lang.

Final Product

Sayang hindi ko na-record yung stock SD-1 para sana may comparison. Pero sa mod na ito mas naging hi-gain yung pedal, luminis at medyo quieter and tunog niya.

sound clip!
0:00 - 0:07 - clean amp (lc15r)
0:07 - 0:27 - clean amp + modded sd-1 all knob 12 o' clock
0:27 - 0:38 - overdriven amp (lc15)
0:38 - 1:17 - overdriven amp + modded sd-1 all knob 12 o' clock

Cost
1 brand new sd-1 - $99.00
caps + resistors - $10.00
OPA2134PA IC - $8.00

Total - $117.00 (Php 3600)
enjoy

Php3600 lang ang $117usd?

randymarsh · « **Reply #3 on:** November 17, 2008, 04:22:51 AM »

aussie dollars. bagsak kasi market ng AU ngayon.

siore · « **Reply #4 on:** November 17, 2008, 07:09:01 AM »

Randymarsh,

Galing! Keep 'em coming. Love these DIY threads (post mo rin dun sa DIY'ers thread).

randymarsh · « **Reply #5 on:** November 17, 2008, 10:13:21 AM »

Quote from: siore on November 17, 2008, 07:09:01 AM

Randymarsh,

Galing! Keep 'em coming. Love these DIY threads (post mo rin dun sa DIY'ers thread).

thanks. sunod kong susubukan yung 2 x opt amp mod tsaka kung makahanap ako ng nagsusupply ng germanium diode, susubukan ko din yun

kawayan_strat · « **Reply #6 on:** November 18, 2008, 12:50:58 AM »

Quote from: randymarsh on November 17, 2008, 04:22:51 AM

aussie dollars. bagsak kasi market ng AU ngayon.

aussie pala.

randymarsh · « **Reply #7 on:** November 21, 2008, 08:14:30 PM »

Got myself a new drill and a few germanium diodes. Added a switch sa SD-1 kung saan nakalagay yung 1n34. Iupgrade ko din lahat ng resistors and caps ng metal film.

Youtube Video Here

Ibat ibang settings ng modded SD-1 through a cheap solid state orange crush amp.

Sana magustuhan nyo

markv · « **Reply #8 on:** November 21, 2008, 10:26:13 PM »

cute ng 'duncan style' soundclip...

randymarsh · « **Reply #9 on:** November 22, 2008, 07:14:05 PM »

Quote from: markv on November 21, 2008, 10:26:13 PM

cute ng 'duncan style' soundclip...

hehe. thanks dude

lupit din ng ds-1 mod mo. malayong mas sarap sa tenga kesa sa keeley ultra mod. mag two years na rin sa akin yung orig keeley ds-1 pedal ko at masyadong ma-bass yung mod na yun. sinimulan ko na rin yung ds-1 mod ko based sa keeley ultra mod, medyo tinitimpla ko pa yung mga caps and resistor para sakto lang yung bass, mids and highs. post ko din dito yung mod na yun pag malapit na matapos.

randymarsh · « **Reply #10 on:** November 22, 2008, 07:33:34 PM »

Final modifications to the SD-1

Got myself some Texas Instruments RC4558P chips. Time to test the "stacked" opt amp mod on my SD-1.

Stacked OptAmp Installed (palit din lahat ng caps and resistors)

Mas cleaner sounding yung Burr Brown na opt amp kesa sa stacked TI RC4558s pero mas mataas ang gain ng stacked. After swapping capacitors and resistors, I'm very happy with the outcome.

Next Project .... Boss DS-1 and Boss CS-3 mods

bryanarzaga · « **Reply #11 on:** November 22, 2008, 08:57:12 PM »

great more to come right?

im not a DIY'er, i like reading threads like this

guitbox · « **Reply #12 on:** November 22, 2008, 10:46:48 PM »

Quote from: randymarsh on November 21, 2008, 08:14:30 PM

Got myself a new drill and a few germanium diodes. Added a switch sa SD-1 kung saan nakalagay yung 1n34. Iupgrade ko din lahat ng resistors and caps ng metal film.

Youtube Video Here

Ibat ibang settings ng modded SD-1 through a cheap solid state orange crush amp.

Sana magustuhan nyo

previously owned an sd-1 but didn't like it for its thin midrange punch. yours sounds pretty good! great job man!

mahavishnu · « **Reply #13 on:** November 23, 2008, 02:08:33 AM »

nice clips sir. okay yan opa2134pa, transparent and low noise, chip is not that fast, so no problem running it with 9v. best yan kung gagamitin sa mga compressors and other clean pedals, although you have to make an adapter for it if you 'll fit it cs-2, cs-3. next up the 2134 is opa2132 and opa2107. theyre quite expensive, and we use 'em more on driving audiophile headphone amps or cd players because of its transparency and presence .

free2rock · « **Reply #14 on:** November 23, 2008, 02:21:31 AM »

This piqued my curiousity...

Gusto ko tuloy pag-aralan yung mga ganyan. Kailangan ko nga lang matuto magsolder ng maayos. Hehehe

Okay lang ba magpaturo?

Allan_Reamillo · « **Reply #15 on:** November 23, 2008, 05:16:39 AM »

Arj aabangan ko yung CS-3 mod mo. Saan based yan? Monte ba? Pag mawala yung ingay ipapamod ko yung sa akin sa yo pagbalik mo ng Pinas... He! He! He!

randymarsh · « **Reply #16 on:** November 23, 2008, 05:38:15 AM »

Quote from: bryanarzaga on November 22, 2008, 08:57:12 PM

great more to come right?

thanks dude. sunod yung cs3

Quote from: mahavishnu

nice clips sir. okay yan opa2134pa, transparent and low noise, chip is not that fast, so no problem running it with 9v. best yan kung gagamitin sa mga compressors and other clean pedals, although you have to make an adapter for it if you 'll fit it cs-2, cs-3.

hahaha naunahan mo ako sir, pero kagabi palang tapos na yung make shift 8 pin adapter ko.

Quote from: Allan_Reamillo

Arj aabangan ko yung CS-3 mod mo. Saan based yan? Monte ba? Pag mawala yung ingay ipapamod ko yung sa akin sa yo pagbalik mo ng Pinas... He! He! He! grin

Sige doc, i-mod natin yan!

bryanarzaga · « **Reply #17 on:** November 23, 2008, 12:51:31 PM »

do a mod for boss turbo OD: i need more volume for it

randymarsh · « **Reply #18 on:** November 23, 2008, 02:21:01 PM »

Quote from: bryanarzaga on November 23, 2008, 12:51:31 PM

do a mod for boss turbo OD: i need more volume for it

sige sir, pagkatapos ng ds1 mod sunod ko yan.

randymarsh · « **Reply #19 on:** November 23, 2008, 03:33:28 PM »

Natapos din sa wakas

Bill of Materials
Resistors (metal film type preferred)
1 x 470 ohms
1 x 100 ohms

Capacitors (metal film non-polar, poly or mylar type prefered)
2 x 0.47uF
4 x 1uF
1 x 2.2uF
1 x 47uF (Tantalum type)

Wires - just in case hindi magkasya yung cap sa PCB, especially for the 2.2uF capacitor.

ICs (optional)
Burr Brown OPA2134PA
PCB bread board
1 x 8 pin socket (4 per side)
1 x 8 pin socket (8 inline)

Instructions
Replace R5 to 470ohms
Replace R36 to 100ohms
Replace C1 and C2 to .47uF
Replace C4, C6, C17 and C14 to 1uF
Replace C13 to 2.2uF or (1.47uf, 1 x 1uF and .47uF in parralel, kung ayaw nyo na ma-bass)
Replace C3 to 47uF (tantalum)

Optional : Op Amp upgrade ala Monte Allum
2 x 4 pins to 1 x 8 pin converter.

Remove IC2 (NJM4558) and replace with 8 inline IC socket. Recommend ko na gumamit ng desoldering braid para mas madaling tanggalin yung IC and hindi masira.

Cut a square 10 x 10 hole sa pcb bread board. Gamit kong paa ng adaptor yung mga tira tirang wire galing sa resistor. Eto yung layout sa PCB para dun sa adaptor.

Eto yung gawa ko. Ampanget pero pwede na

Chip installed, mas mabright at mas mavolume yung TI4558 at JRC4558 op amps pero mas malinaw naman yung tunog ng nung Burr Brown chip.

Pinalitan ko din lahat ng resistors at capacitors, badtrip lang dahil maliliit na resistors ang ginamit nila sa CS3 pero ang laking improvement naman sa pagreduce ng noise sa pedal na ito.

Final Product

Sound Clip!!
0:00-0:07 - guitar and amp
0:07-1:17 - CS 3 engaged all knobs set to 1 o' clock (compressor mode).
1:17-2:23 - CS 3 engaged, attack at min level, sustain at max level (limiter mode)

enjoy

randymarsh · « **Reply #20 on:** November 23, 2008, 03:45:56 PM »

Quote from: free2rock on November 23, 2008, 02:21:31 AM

This piqued my curiousity...
Gusto ko tuloy pag-aralan yung mga ganyan. Kailangan ko nga lang matuto magsolder ng maayos. Hehehe

Okay lang ba magpaturo?

madali lang yan sir basta marunog ka maghinang at sumunod sa instructions. ang ginagawa ko palit 1 or 2 components tapos testing para siguradong hindi magkamali.

Allan_Reamillo · « **Reply #21 on:** November 23, 2008, 08:04:45 PM »

Cool!!! Ayos di na ganun kalakas yung hiss.
Have you tried it before a high gain pedal?

bryanarzaga · « **Reply #22 on:** November 24, 2008, 08:20:37 AM »

Quote from: randymarsh on November 23, 2008, 02:21:01 PM

sige sir, pagkatapos ng ds1 mod sunod ko yan.

yey ill wait for that

demoboi · « **Reply #23 on:** November 24, 2008, 09:05:26 AM »

I'll do the mod to the SD-1 here. I have to list the materials and check kung available ba dito. Baka close din mga stores 'coz fiesta eh. hehehe! Maybe I can't find the Burr Brown OPA2134PA IC here, but can I use the same OPA2134PA? 1/4 watt lang naman lahat ng resistor diba?

randymarsh · « **Reply #24 on:** November 24, 2008, 11:12:19 AM »

Quote from: demoboi on November 24, 2008, 09:05:26 AM

I'll do the mod to the SD-1 here. I have to list the materials and check kung available ba dito. Baka close din mga stores 'coz fiesta eh. hehehe! Maybe I can't find the Burr Brown OPA2134PA IC here, but can I use the same OPA2134PA? 1/4 watt lang naman lahat ng resistor diba?

cool! yup 1/4 watt lang yung mga resistor. yung opa2134pa gawa ng burr brown. di ko alam kung may ibang manufacturer ng same chip, kung walang opa2134 hanap ka nalang ng ti4558 or isa pang jrc4558 then perform the stacked op amp mod

you can also add a switch and wire an LED in series sa D5, it will boost the volume a little bit and add more clarity to the sound.

good luck bro. let us know kung magustuhan mo yung tunog after ng modification

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Author Topic: RandyMarsh's DIY Pedal Mods (Two New Pedals In the Works) (Read 64805 times)