Search found 303 matches

by FiveseveN
16 Mar 2016, 10:59
Forum: Pedal Debugging & Troubleshooting Support
Topic: *MOJO* components and noisy ones too !!
Replies: 2
Views: 131

Re: *MOJO* components and noisy ones too !!

types of caps See here: https://www.freestompboxes.org/viewtopic.php?f=43&t=8625 I am almost always running into noise issues. What kind of noise? Resistors and active components mostly add wideband (white) noise (commonly percieved as "hiss"). Other undesirable sounds come from poorly filtered pow...
by FiveseveN
15 Mar 2016, 14:56
Forum: Boutique Stompboxes dissected...
Topic: Greer Lightspeed
Replies: 26
Views: 12075

Re: Greer Lightspeed

Previous thread: https://www.freestompboxes.org/viewtopic.ph ... 2&p=243495
Put me down for $10 on Tubescreamer variant.
by FiveseveN
03 Mar 2016, 13:51
Forum: DIY Stompbox designs
Topic: FYA Scream Queen
Replies: 16
Views: 7225

Re: FYA Scream Queen

the TS styled clipping amp will need a buffer or any other method of impedance transformation to keep it from loading pickups Am I missing something? It's a non-inverting amplifier, so ~5 MΩ input impedance for the 4558, right? And if I'm not, the buffer would probably be of more use at the output,...
by FiveseveN
19 Feb 2016, 18:26
Forum: Pimp-My-Cheap-Pedal
Topic: High gain ehx soul food
Replies: 4
Views: 4259

Re: High gain ehx soul food

High gain ehx soul food Getting high gain and distortion is precisely opposite to the intentions of a Klon(e). I's say it would be more practical to build a "metal tone" pedal from scratch, and more educational if you intend to continue building. Otherwise just buy a cheap one. There are many simpl...
by FiveseveN
25 Nov 2015, 23:50
Forum: Boutique Stompboxes dissected...
Topic: Death by Audio The Flaming Lips Space Ring
Replies: 5
Views: 2725

Re: Death by Audio The Flaming Lips Space Ring

jrfox92 wrote:how the hell they ever managed to design it
Like they always do:
Image
by FiveseveN
22 Nov 2015, 19:51
Forum: Boutique Stompboxes dissected...
Topic: Earthquaker Devices - Acapulco Gold [traced]
Replies: 87
Views: 54682

Re: Earthquaker Devices - Acapulco Gold [traced]

I'm wondering if it will drive a cab. Only with the volume control full on, and even then there will probably still be too much residual resistance compared to the speaker load. Also the 1 uF output cap forms a 20 KHz high-pass filter with an 8 Ω speaker. Of course there is little you need to modif...
by FiveseveN
10 Sep 2015, 16:40
Forum: Modern Stompbox Effects (1975 - ...)
Topic: EHX - Humdebugger
Replies: 12
Views: 4428

Re: EHX Hum De Bugger

Don't remember where I read it, but rumors/guesses were it's a DSP (series of) high-Q notch filter(s) and it samples the actual mains frequency (and whatever noise may be on it) to tune it. Hence the AC power input. Sounds feasible, but why only one button for configuration when you have the flexibi...
by FiveseveN
08 Sep 2015, 17:32
Forum: Amplifiers
Topic: Roland Jazz Chorus
Replies: 6
Views: 3355

Re: Roland Jazz Chorus

Which one? There seem to be lots of models over the years, with different schematics. Which goes to show you the preamp is not what makes it special.
by FiveseveN
20 Aug 2015, 14:48
Forum: DIY Stompbox designs
Topic: Combining FullDrive with EP Boost
Replies: 4
Views: 2140

Re: Combining FullDrive with EP Boost

If so should I wire the boost before or after the Fulldrive? You would have different sounds/options in either of those cases. So which one do you want? In case you've never experimented with those situations, in a nutshell: Boost before = more saturation. Boost after = more volume (for a solo boos...
by FiveseveN
21 Jun 2015, 09:11
Forum: DIY Stompbox designs
Topic: Bazzrite
Replies: 6
Views: 3682

Re: Bazzrite

marmora wrote:I wish the original schematic image was still around.
Here it is, if it's OK to post it here:

Image
by FiveseveN
09 Jun 2015, 14:17
Forum: Ready-To-Build Effect Projects
Topic: Stupidly Awesome Buffer [verified]
Replies: 41
Views: 4592

Re: Stupidly Awesome Buffer [verified]

What about making the input impedance of the buffer the same as the amplifier's input impedance? Would this arrangement make the buffer more "transparent"? As long as you also include the capacitance of the cable, yes, it should sound just like the buffer isn't there. You'd keep some advantages, li...
by FiveseveN
28 May 2015, 15:21
Forum: Pimp-My-Cheap-Pedal
Topic: Behringer Vintage Tube Overdrive VT911 = B.K. Butler Tube Dr
Replies: 40
Views: 77926

Re: Behringer Vintage Tube Overdrive VT911 = B.K. Butler Tub

Yes, leave it floating. Pin 9 is the heaters' center tap. This application uses the heaters in series, so you have to leave it disconnected.
by FiveseveN
26 May 2015, 20:51
Forum: Pimp-My-Cheap-Pedal
Topic: Behringer Vintage Tube Overdrive VT911 = B.K. Butler Tube Dr
Replies: 40
Views: 77926

Re: Behringer Vintage Tube Overdrive VT911 = B.K. Butler Tub

That's fine as long as you realize it's the extra voltage (on both the heaters and the anodes) that's causing this, not the extra current capability. Using 12 V is even suggested on the old Tube Driver schematic at Muzique.
by FiveseveN
16 May 2015, 14:39
Forum: Pimp-My-Cheap-Pedal
Topic: Behringer Vintage Tube Overdrive VT911 = B.K. Butler Tube Dr
Replies: 40
Views: 77926

Re: Behringer Vintage Tube Overdrive VT911 = B.K. Butler Tub

Your intuition is wrong. You can't force more current through the device, it will only use whatever it needs, to put it in simple terms. And even if electronics worked that way, "hotter tube => better sound" is meaningless. You'd have to first define what makes a sound "good" and then show how a tub...
by FiveseveN
07 May 2015, 09:04
Forum: DIY Stompbox designs
Topic: Modern SLO 100 emulator
Replies: 30
Views: 18743

Re: Can you help me identify this pedal?

sirgerry wrote:somebody suggested it might be the Freya, but the knob placement seems different.
People make their own layouts all the time. This guy said he has "los planos" in the comments for that video.
by FiveseveN
06 May 2015, 12:40
Forum: Pedal Debugging & Troubleshooting Support
Topic: 4pin jack?
Replies: 6
Views: 170

Re: 4pin jack?

Have you set it on AC Volts? Are the probes making proper contact? Is the guitar's volume pot turned all the way up?
by FiveseveN
06 May 2015, 10:54
Forum: Pedal Debugging & Troubleshooting Support
Topic: 4pin jack?
Replies: 6
Views: 170

Re: 4pin jack?

Yes. Though you don't really need a female connector to do that. And a guitar signal is not a constant sine wave, it has a large initial attack which will probably be "missed" with such a measurement; depends on your unit's integration time. Also remember that a multimeter has some input impedance (...
by FiveseveN
06 May 2015, 09:14
Forum: Pedal Debugging & Troubleshooting Support
Topic: 4pin jack?
Replies: 6
Views: 170

Re: 4pin jack?

Depends on what you're wiring it for . Being the open type, its function is easily visible: the "extra" pin is open when a male connector is inserted, and shorted to Tip otherwise. Sticking the appropriate plug in might help you visualize it. You can simply ignore this switching connection and treat...
by FiveseveN
01 May 2015, 13:21
Forum: Boutique Stompboxes dissected...
Topic: WMD Geiger Counter - [gut shots]
Replies: 139
Views: 31305

Re: WMD Geiger Counter - [gut shots]

Looks like the wave table simply defines the transfer function, though I don't know how it's actually implemented (lookup tables?).
by FiveseveN
15 Apr 2015, 14:16
Forum: DIY Stompbox designs
Topic: extreme distortion with two triodes
Replies: 17
Views: 4386

Re: extreme distortion with two triodes

This is one of those cases when using the proper terms is important. You can get various amounts of saturation with the same amount of gain . Headroom is of course essential, linearity of the transfer function as well (though something we usually have little control of) but biasing is also important...