freestompboxes.org

Designing original circuits (warning: philosophical stuff)

9 minutes ago

by teleK (Posted 9 minutes ago)

Dont try to do anything completely new. Rather, take very small, common things, and combine them in a new and unique way. or even better, some arrangement that sounds good. Filters, gain, buffer, etc.

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Loop Recorder pedal

53 minutes ago

by muki (Posted 53 minutes ago)

STRONGHOLD69 wrote:A little "off topic", but theres a chance to use: http://www.datasheetsite.com/datasheet/ISD1700 on the looper? I want a "hi fi" looper if you know a project without effects just record and loop at over 12KHz i would be grateful

I've been building one that's 16bit and over 44khz. Unfortunately it involves programming, as does anything else that's more than lo-fi.

If you're interested, I've been using MikroC and their PIC32 dev equipment.

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Garage Sale: 3PDT ~ Transistors ~ Knobs ~ Oddballs

Today, 02:16

by LucifersTrip (Posted Today, 02:16)

Update (part 9 new): A bunch more oddball garage sale stuff from years of accumulation.

Black = I have only what is pictured
Red = I have more than what is pictured

Part 1

Part 2

Part 3

Part 4

Part 5

Part 6

Part 7

Part 8

Part 9

--------
~PART 1~
1) pot covers pulled from new 16mm pots, 10/$1
2) ¼” jack w/nut, unused, .50
3) 100 ohm pot, not common, great for sagging the battery, new, $2
4) 50 ohm pot, not common, unused, $1.50
5) 3PDT pushbutton stomp switch for true bypass, new, $3 (free ship in USA with 8+)
6) 1.5v battery holder, less common version with metal tabs so you can connect
them in various combos for 3v, 4.5v, 6v, etc, new, 2/$1

~PART 2~
10) copper scourer for soldering iron, new, $1
15) 2N2369 Si NPN hfe ~ 50-80 (Peak Atlas measured), vintage metal case, gold legs, US made pre-1968, unused, $1
16) GT5253 Si NPN hfe ~ 150-400*, vintage metal case, gold legs, US made pre-1968, unused, $1
(*if you need a specific hfe within that range, just ask and I'll try to find it)
17) 1N192 Germanium glass case diode, vintage US made pre-1968, unused, 2/$1
18) Texas Instruments, J3151 Si PNP, hfe ~ 45-75, vintage metal case, gold legs, US made pre-1968, unused, $2
19) 4JX11B1634B Si NPN hfe ~ 50-60 (Peak Atlas measured), vintage metal case, gold legs US made pre-1968, unused, $1
20) odd vintage non-latching SPST push switch, normally open, used, $1
22) 555 timer IC, NE555P, new, 4/$1

~PART 3~
26) 3 knobs, 1 large, 2 small (1 not pictured) knurled shaft, for one size smaller than 1/4" shaft, all 3/$1
27) silver knob (~ 1 3/16") for 1/4" knurled shaft, 70's or 80's ?, $1
28) 2N2270 RCA Si NPN, vintage metal case, US made, gold legs, sealed in pack, $3ea, 2/$5
30) 24PDT rotary switch w/ knob, very tough to find, usually these have many tiers/decks this one is heavy duty & more compact, pulled from unused box, $12
34) Texas Instruments, SM2349 Si PNP, hfe ~ 35-60 (Peak Atlas measured), vintage metal case w/ white dot on top, gold legs, US made, unused, $2ea
36) PET4003 Si NPN, hfe ~ 300-500*, vintage black & white case, gold legs, US made, unused, $2
(*if you need a specific hfe within that range, just ask and I'll try to find it)
37) 2N3638 Si PNP,hfe ~ 40-60 vintage black & white case, gold legs, US made, unused, $2, few left
37a) 2N3638 Si PNP,hfe ~ 20-30 vintage black & white case, gold legs, US made, unused, $1
40b) 2n1499 (not pictured) vintage split gold & silver metal case, gold legs, US made, DMM measured hfe >100 w/ extremely high leakage, for diode use, unused, .50ea, 1 left
41) Parco Products Germanium PNP, no #, vintage metal case, silver legs, US made, DMM measured hfe > 100 w/ high leakage, $1ea, 1 left
43) (not pictured) PNP silicon, no #, vintage pre-1968 metal case (similar to #34), gold legs, US made, hfe < 10, for diode use, unused, 3/$1, 3 left

~PART 4~
44) GE Transistor Manual Including Signal Diodes, 1962, 456 pages, $4
46) 100K pot, knurled shaft, pulled, $1
48) 2.5K pot, unused, knurled shaft , $1
51) 27PDT rotary switch w/ knob, very tough to find, usually these have many tiers/decks. this one is heavy duty & much more compact, pulled, $12
52) 24PDT rotary switch w/ knob, very tough to find, usually these have many tiers/decks. This one is heavy duty & more compact, pulled, $12
57) vintage knob (~ 1”) for ¼” knurled shaft, .50

~PART 5~
60) vintage pcb with Sprague components: caps (3) TE1162 ($2+ ea at Mouser), (1) TE1160 ($2+ at Mouser), (2) 10DB6A rectifiers, (1) Koolohm wirewound resistor, (4) 1K 1% resistors. Also: 4 fat (metal?) can diodes, 3 more caps (.1) and various bradley resistors. Also, 2 extra chunks of a 1961-62 circuit board with more Bradley resistors, $5
http://www.mouser.com/ProductDetail/Vis ... 1na94eI3MY
http://www.mouser.com/ProductDetail/Vis ... dB2caWWNnR
62) pair of cool looking vintage knobs (~ 1 5/8”) for ¼” shaft, w/ set screw, $4
63) normally open spst pushbutton switches, 3/$1

~PART 6~
72) vintage (60’s or earlier) turret board, $3
73) 20 x vintage (60’s or earlier) 510K resistors, $1
74) 8 pieces of heavy multi-strand wire, each 4”-5” long (over 3 feet total), these were attached to a $200 vintage relay switch, .50
78) 198K pot (measured), 1/4” smooth shaft, unused, $1
79) 10KA pot w/ on/off switch, ¼” smooth shaft with washer & nut, pulled & clean, $1
80) 82K pot (measured), black ¼” D shaft, unused, $1
81) mystery vintage board w/ 4 germaniums (2 x 2SB75, 2 x 2SB156), 2 transformers (S6286C, S6285B)…and a bunch of caps & resistors, $7
83) Fuzz Face germanium PNP pair: After posting my last couple garage sales, so many people asked me the same question:
“Would it sound good in a Fuzz Face?”…so I pulled out my Fuzz Face Tester and went through a load of germs. I carefully chose pairs that not only sounded good, but also hit the 4.5v sweet spot very near the 8.2K stock resistor. The 3 numbers following Q1/Q2 are Q1 hfe, Q2 hfe and the resistor needed to get 4.5v on Q2’s collector. I used a Peak Atlas for the hfe. p=pulled, m=medium/clipped lug - long enough to solder, s=short/clipped - best for socket , n=unused. All are metal cans.
f) 2N633 ps / 2N633 pm (64, 102, 10K), $5
i) Parco “Mix” [gold lugs] n / 2SB56 pm (66, 102, 5.1K), $6
k) 2N633 ps / 2N633 ps (50, 61, 6.14K), low gain like AM Sunface, $4
q) MP16B n / MP16B n (78, 90, 9.6K), $5
r) 2SA221 n / 2SA221 n (152, 197, 11.4K), $6
s) 1T308B n / 1T308B n (73, 86, 6.4K), $4
t) Texas Instruments 6502 ps / Texas Instruments 6142 ps (58, 180, 6.39K), $4
v) General Electric 4JX1C610 (black can) pm / General Electric 4JX1D630-9 (black can) pm (62, 97, 6.6K), $6
x) 2SA221 n / 2SA221 n (141, 222, 12.7K), high gain, $6
z) (no#, labeled "out") n / (no#, labeled "out") n (85, 128, 8.39K), $6
aa) MP16B n / MP16B n (63, 88, 7.4K)
bb) 2N188a (black can, pinch top) m* / HEP253 m*, *approx 1/4" lugs, $5
84) vintage Silicon Fuzz Face pair
b) 2N2243A [gold lugs, metal can] n / GT5253 [gold lugs, metal can] n (112, 293, 5.53K), NPN, $4
c) M9432 [gold lugs, metal can] m / M9308 [gold lugs, metal can] m (90, 119, 5.05K), PNP, $4
http://www.talonix.com/shop/item.aspx?itemid=5282
http://www.talonix.com/shop/item.aspx?itemid=11188
86) vintage knobs, (~1 7/8") for 1/4" shaft, w/ set screw, pair $4

~PART 7~
…no cheap Alpha pots here. Most are made in the U.S.A. all pots are clean, unused = no solder.
(some come with nuts/washers)
94) 12K (measured), A-B, heavy duty vintage pot, ¼” smooth shaft, unused, $1
95) 1.3K (measured), medium duty vintage pot, ¼” smooth shaft, used, $1
96) 10K (measured), medium duty vintage pot, ¼” shaft, slot top, unused, $1
97) 275K (measured), Ohmite, heavy duty vintage pot, ¼” smooth shaft, slot top, used, $1
98) 1K (measured), Clarostat, medium duty vintage pot, ¼” smooth shaft, D-top, used, $1
99) 120K (measured), A-B, heavy duty vintage pot, ¼” smooth shaft, used, $1
100) 10K (measured), medium duty vintage pot, ¼” smooth shaft, used, $1
101) 3” x 4.75” perf w/ 1 corner used, $1
102) old DPDT lighted pushbutton switch, comes with 2 color tops, sealed, $4
103) old 1 pole, 11 position rotary switch, sealed, $2
104) heavy duty DPDT toggle switch, unused, $2
105) vintage heavy duty SPDT, used, $1
106) vintage heavy duty SPDT, center off, unused, $2
107) vintage heavy duty SPDT toggle switches, .50 each
108) 10M Clarostat pot, smooth shaft, used, $4
109) silver solder, $2 each
110) transistor heatsinks for classic metal can types, 7/$1
111) vintage solid metal knob (~1”) for ¼” shaft, w/set screw, cool, $3

~PART 8~
118) vintage turret board ~ 1.5" x 3", 5 lugs per side, good for Fuzz Face, $4
http://www.turretboard.org/wp-content/u ... zf1966.png
119) vintage turret strips of 14, each can be cut in two to get 7 per side, good for many vintage distortions & fuzzes, $2 each
http://www.turretboard.org/wp-content/u ... turret.png
120) vintage turret strips of 12, each can be cut in two to get 6 per side, good for many vintage distortions & fuzzes, $2
…no cheap Alpha pots here. Most are made in the U.S.A. all pots are clean, unused = no solder.
121) 8.3K (measured) vintage pot, w/ DPST on/off switch, with knob, used, $2
122) 5K, vintage pot, 1/4" smooth shaft, unused, $1
123) 20K (measured) vintage pot, 1/4" slot shaft, used, $1
124) 1M vintage pot, 1/4" smooth shaft, slot top, unused, $1
125) 118K (measured) vintage Allen Bradley pot, 1/4" smooth shaft, slot top, unused, $1
126) 900K (measured) vintage pot, 1/4" D-shaft,used, $1
127) 10K (measured) vintage pot w/ SPST on/off switch, 1/4" knurled shaft, board mount, used, $1
128) 10K (measured) vintage pot, 1/4" knurled shaft, slot top, used, $1
129) 500K (measured) vintage pot, 1/4" knurled shaft, board mount, used, $1
130) 430K (measured) vintage pot, 1/8" smooth shaft, used, $1
131) 5K (measured) vintage pot w/ SPST on/off switch, 3/16" D-shaft, board mount, used, $1
132) 5K (measured) vintage pot, 1/4" smooth D-shaft top, used, $1
133) 25K (measured) vintage pot, 1/8" smooth slot top, used, $1
135) vintage lamp/bulb holder, used, $2 each,
136) vintage lamp/bulb holder, small, used, $1
136.5) mono jacks, 2 left, new, .50 each
137) vintage lamp/bulb holders, 3 large, used, $1 each
138) vintage lamp/bulb holder, small, used, $1
139) vintage SPST heavy duty switch, used, .50
140) vintage SPST heavy duty switch, used, $1
141) vintage DPDT heavy duty switch,used, needs de-soldering, $1
142) vintage transistor washers/spacers, 8 for medium can, 2 for small can, .50
143) 12 volt DC wallwart for standard jack, 1.5A, 18W max, center +, $4
144) 5K trimpots, not the super cheapo ones, Bourns 3386, 13 count, $3
145) vintage large knob w/ metal skirt numbered 0-100 by tenths, (~2 3/4”) for ¼” shaft, needs set screw, $4
146) vintage (70's?) knob pair w/ metal skirt, (~2 3/8”) for ¼” shaft, 1 needs set screw, $5
147) pair of vintage heatsinks with an NPN germanium (IBM 6335 & IBM 6145) glued (?) into each (short leads), hfe 95, 44 (peak Measured), $5
150) vintage knob pair, (~2 1/2”) for 1/4" shaft, cool, long & thin w/ ridged handle, w/ set screws, $4
151) vintage solid metal knob painted black (some paint chipping), (~1 5/8”) for 1/4" shaft, w/set screw, $2
152) vintage knob pair, (~1 1/8”) for 1/4" shaft, 1 needs set screw, $3
153) vintage knob trio, (~1 1/8”) for 1/4" shaft, w/ set screws, $4
154) old stick-on feet (4) for stompbox, .25, 2 left

~PART 9~
155) vintage monster knob, (~4") for 1/4" shaft, w/ set screw, $5
156) vintage large knob pair (~2 3/4") for 1/4" shaft, metal skirt numbered 1-100, one needs set screw, $6
157) 3 1/2" speaker, pulled and clean, $1
158) vintage knob pair (~1 3/8") for screw shaft < 1/4", $2
…no cheap Alpha pots here. Most are made in the U.S.A. all pots are clean. unused = no solder.
159) 24K (measured), vintage pot, 1/4" smooth shaft, used, $1
160) 125K (measured), vintage pot, 1/4" smooth shaft, used, $1
161) 12K (measured), vintage pot, 1/4" smooth shaft with slot top, unused, $1
162) 330K (measured), vintage pot, 1/4" smooth shaft, used, $1
163) 3K (measured), vintage pot, 1/4" smooth shaft, unused, $1
164) vintage knob X 4, (1 3/8"), for 1/4" shaft, each has 2 set screws, $6
165) 5K (measured), pot, 1/4" smooth shaft, D top, used, .50
166) 50K (measured), vintage pot, 1/4" smooth shaft, used, $1
167) vintage knob trio, (1 1/8"), dark green w/ metal skirts, for 1/4" shaft, w/ set screws, $5
168) vintage knob X 4, (2"), w/ metal pointers, for 1/4" shaft, w/ set screws, $6
169) vintage knob pair, (7/8"), solid metal, narrows at base, for 1/4" shaft, w/ set screws, $4
170) vintage knob, (1 3/4"), metal top, for 1/4" shaft, w/ 2 set screws, $1.50
171) vintage knob, (1 1/8"), metal skirt, for 1/4" shaft, w/ set screw, $1
172) vintage knob, (1 1/8"), metal skirt numbered, for 1/4" shaft, needs set screw, $1
173) vintage knob, (1 1/8"), for 1/4" shaft, w/ 2 set screws, $1
174) vintage knob, (11/16"), small clear plastic "bulb" at tip of pointer, for 1/4" shaft, w/ set screw, $1
175) vintage knob pair, (5/8"), for 1/4" shaft, each has 2 set screws, $2
176) various vintage standoffs, $1
177) 5 X SPDT slide switches, new, $1

No high shipping....I'll mail for the real cost.

shipping outside of US: small components ~ $3-$5 (1-3 ounces) and slowly up from there...
US: free shipping with $25 order if no heavy items.

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Weird noise with princeton pots

Today, 02:06

by DrNomis (Posted Today, 02:06)

nat-han wrote:Fixed. Tiny bit oscillation when maxed out, but no one ever said that was a bad thing

You might be able to cure that by putting some small-value caps on the control grids of the power tubes to circuit ground, also, try putting a 100nF/630V cap in parallel with any HT bypass caps....

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Wanted aqua puss pcbs FSB

Today, 01:49

by abfackeln (Posted Today, 01:49)

Which ones? Madbean has the awesome Aquaboy boards, which is a shrunken Aqua Puss, with the added benefit of being able to use either the MN3005 or V3205 bbd's.
If you're looking for the original "big" boards, I have a couple of red ones left.

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The 'Sound' of Capacitors..

Today, 00:59

by DrNomis (Posted Today, 00:59)

"Condenser " is basically the old name they used for a capacitor back in the early days of Electronics circa 1920's or so....

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Maestro - FZ-1

Yesterday, 22:29

by Rolbista (Posted Yesterday, 22:29)

I don't need to bring down a 9V battery, for that I would just wire an AA battery clip, i was just wondering if a voltage starve knob would allow me to set the pedal as an FZ-1 or something more like a Tonebender Mark I. I understand the bias issue, but i was hoping that it maybe would work like powering an overdrive pedal with 18V.

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Cheap Boutique Pedals

Yesterday, 19:00

by jwpartain1 (Posted Yesterday, 19:00)

Hey, selling some gear here that I've tried to sell in the past. Finally dropped the prices to a reasonable level

http://asheville.craigslist.org/msg/3021319128.html

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which klon layout

Yesterday, 17:26

by Seiche (Posted Yesterday, 17:26)

IvIark wrote:How are they different component wise?

I think there are two different values for some components. There has been an updated schematic by soulsonic from 2009.
http://freestompboxes.org/viewtopic.php?f=13&t=1256&p=78213&hilit=klon+updated+values#p77218

I'd go with the updated values.

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New member introduction - please do say hello!

Yesterday, 16:40

by alberdmonak (Posted Yesterday, 16:40)

Hi everybody,

i'm alberdmonak, and i'm a DIY beginner (i've built only two pedals: a modded fuzzface and a modified valvecaster including a voltage booster, colorsound wah and greenringer circuits).

Thanks to the DIY community for all the informations and knowledges gathered here.

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Rectum Fryer Preamp

Yesterday, 16:06

by himister (Posted Yesterday, 16:06)

Now we're talkin'
Thanks for updated schematic!

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Joyo AC Boost (Tech21 Character alike) mods ?s

Yesterday, 15:38

by mr72 (Posted Yesterday, 15:38)

BTW, for the dynamics thing, I am thinking maybe cram something like this somewhere like in place of C3.

Maybe take C3 off the board and run it to a TRS insert jack and I can add an outboard comp if I can't fit it in the chassis.

And FWIW, to make space in the chassis I figure to remove the battery compartment and free space that way. Also probably hotwire it to be always-on and repurpose the foot switch. I have a whole lot of other mods I want to do to this for which I already have definite plans and no questions. Point is, I should be able to fit in a OSQ board, or perf-board sub. I figure with the mods I am planning, a rather large perf board wouldn't be a bad idea.

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[WTB]Lee Jackson DVD's

Yesterday, 15:21

by theehman (Posted Yesterday, 15:21)

I have the Sovtek Mig 50H Head disc and it really doesn't tell you much of anything.

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New Fuzz Face-like boxes

Yesterday, 14:55

by stevo83 (Posted Yesterday, 14:55)

I'd be up for one or two as well.

Lovely looking enclosures dude.

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Recommend me a distortion build...

Yesterday, 14:46

by mojah63 (Posted Yesterday, 14:46)

The SHO didn't do it for me, too bright. I built a few fet boosters and find all them lacking in some respect. A germ rangemaster with a rotary input cap selector is a great boost! You can add a germ diode to it to make it temperature stable. If you like the OCD a booster may not do it for you anyway. Another super simple build that I like into a Marshall type amp is a Grey DOD 250. Put a switch in to toggle the input cap, (YJM or stock) NJRC makes a good low noise 741 op amp. Although you did say you modded MXR D+'s they are almost the same. Sounds like a OCD is in your future. I bought a JOYO OCD V4 clone for $40, I couldn't justify the time making one or modding my V1 clone.

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Peterson Stomp Classic Strobotuner

Yesterday, 14:43

by Duckman (Posted Yesterday, 14:43)

John Ricky wrote:Also Chuck Berry has never knowingly been in tune at any point in the last 60 years and it hasn't hurt him

Well, if you have all the other qualities that Chuck Berry have, I see no problem

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Futerlec Transistors

Yesterday, 14:04

by mojah63 (Posted Yesterday, 14:04)

I don't use my DMM hfe checker anymore. It always reads 15 to 22% higher (and the error is not linear in respect to hfe ranges) than using RG Keen's circuit. I use a traceable DMM at the lab were I work with a traceable power supply and set the resistors to exactly the values. Plus I can do leakage checks on germs. I expected lower gains from them and got them so I'm ok with it. I need some lower hfe's to build some Fuzz Faces anyway. Just wanted to let some others know in case they expect to get a BC109C at or near spec. I did expect more of the unsorted 107's to be higher, yeah the 184's are good though.

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