It's funny how I'm talking to myself on an internet forum..
Anyway, I traced the input already. Now I need to read about filters..
Search found 121 matches
- 20 Oct 2014, 15:43
- Forum: Amplifiers
- Topic: Low power 2.1 amplifier suggestion (or help me debug sub)
- Replies: 2
- Views: 2559
- 20 Oct 2014, 15:06
- Forum: Amplifiers
- Topic: Low power 2.1 amplifier suggestion (or help me debug sub)
- Replies: 2
- Views: 2559
Re: Low power 2.1 amplifier suggestion (or help me debug sub
What am I saying. Absolute max is 16,5V, and looking at the radiator it's probably not the case. No sign of overheating, unless those chinese chips are built not to release any signs of it. Maybe it's just a cap, or something? I'll try to make a schematic of this whole thing.
- 20 Oct 2014, 14:27
- Forum: Amplifiers
- Topic: Low power 2.1 amplifier suggestion (or help me debug sub)
- Replies: 2
- Views: 2559
Low power 2.1 amplifier suggestion (or help me debug sub)
I have a cheap 2.1 speaker set that's broken - satellites work ok, but the subwoofer is making a constant popping noise. I checked all components and joints, except for the subwoofer PA chip - I'd have to desolder the radiator. (I bet it's the thing that's broken, but it isn't getting anywhere near ...
- 09 Oct 2014, 11:50
- Forum: Multi-Effects
- Topic: Bass Driver and THAT Compressor in one unit - how to power?
- Replies: 0
- Views: 7910
Bass Driver and THAT Compressor in one unit - how to power?
My friend asked me to make him a rack unit containing a Sansamp bass preamp (my choice is BD21 lite , and a good compressor (like a THAT4301 based one ). Since it's going to be a rack unit I can power the preamp from something bigger than 9V battery. However, problem is that THAT compressors use +/-...
- 08 Sep 2013, 11:59
- Forum: Printed/Published Online Designs
- Topic: Digital wireless system for guitar
- Replies: 0
- Views: 1432
Digital wireless system for guitar
http://www.ise.pw.edu.pl/~wzab/wireless ... index.html
Not much components. There's possibility of shrinking it down to an usb interface, or simply a wireless system (by adding a DAC). The problem is I know nothing about programming AVRs...
Not much components. There's possibility of shrinking it down to an usb interface, or simply a wireless system (by adding a DAC). The problem is I know nothing about programming AVRs...
- 06 Sep 2013, 07:57
- Forum: Boutique Stompboxes dissected...
- Topic: Tech 21 SansAmp Tri-A.C. - help needed with russian text
- Replies: 2
- Views: 1988
Tech 21 SansAmp Tri-A.C. - help needed with russian text
All right, yo. I found this schematic:
Also, I see that this schematic is not all without the electronic switching. I wonder if I can get rid of some of the transistors.
I'll be doing a layout for this one, but I can't read russian. Any of you guys to translate this stuff? Also, I see that this schematic is not all without the electronic switching. I wonder if I can get rid of some of the transistors.
- 30 Aug 2013, 14:03
- Forum: Boutique Stompboxes dissected...
- Topic: Samson S-direct
- Replies: 0
- Views: 1024
Samson S-direct
Well, that's not exactly a boutique stompbox, but maybe someone is still interested in tracing that one. It IS cheap, but still.. Here's what I found in the net. I even wrote to Samson, but of course they told me they can't supply me with schematic of actually produced unit. https://i488.photobucket...
- 07 Apr 2013, 09:47
- Forum: Software Room
- Topic: Useful apps for android?
- Replies: 2
- Views: 3923
Re: Useful apps for android?
Well, shit. Total fail of mine
You may close this topic people.
You may close this topic people.
- 06 Apr 2013, 21:32
- Forum: Software Room
- Topic: Useful apps for android?
- Replies: 2
- Views: 3923
Useful apps for android?
Hey folks! I just (finally!) bought a tablet with android os. Do you know any useful apps for this system? I was searching for any schematic/pcb layout editors, but couldn't find any. I found one useful app - ElectroDroid, which contains a lot of useful informations on electronic circuit designing. ...
- 01 Feb 2013, 18:55
- Forum: DIY Projects
- Topic: A Switching Scheme [documentation]
- Replies: 267
- Views: 75286
Re: A Switching Scheme [documentation]
Mictester, will this one do?
Great one! Certainly something I want to design for myself too.electrosonic wrote:I have made a similar switching board, it sits at the top of a 1590BB.
- 25 Jan 2013, 15:47
- Forum: Power
- Topic: Combining single- and dual-rail devices. How to?
- Replies: 3
- Views: 9535
Re: Combining single- and dual-rail devices. How to?
Well, certainly an opportunity to learn some stuff. Must! - Make R4 something like 470k and move it to the + input of the opamp instead of the - input. You're now adding a DC component to the output signal of 5.6*Vb. While it's not clear how high Vb is it suggests that the DC level on the output wil...
- 22 Jan 2013, 22:20
- Forum: Power
- Topic: Combining single- and dual-rail devices. How to?
- Replies: 3
- Views: 9535
Re: Combining single- and dual-rail devices. How to?
I've come up with that kind of idea: schematic.png I suppose it is going to work, but I'm not sure about value of the input cap. However, I'm pretty sure there's impedance mismatch between pre- and power amp. How to deal with it? Should I restore the buffer? Or a simple tone stack scaling would do t...
- 19 Jan 2013, 22:44
- Forum: Power
- Topic: Combining single- and dual-rail devices. How to?
- Replies: 3
- Views: 9535
Combining single- and dual-rail devices. How to?
I want to merge an old Marshall Lead 12 (3005, schematic ) preamp with Taylor's (from DIYSB) Tiny Giant amplifier ( schematic and info ). What disturbs me is that TG is a single-rail amplifier, and the Lead 12 preamp is designed for dual-supply use. I'll be using this setup with a regulated laptop p...
- 15 Jan 2013, 19:26
- Forum: Boutique Stompboxes dissected...
- Topic: Emma - PisdiYAUwot?
- Replies: 44
- Views: 17342
Re: Emma - PisdiYAUwot?
Any news on the case?
- 14 Jan 2013, 19:41
- Forum: Modern Stompbox Effects (1975 - ...)
- Topic: Marshall - Shredmaster [schematic]
- Replies: 30
- Views: 40336
Re: Marshall - Shredmaster [schematic]
I made the Shredmaster recently, and unfortunately the result isn't too good. It's quiet (not sure if unity gain at all), and muddy. Changing bass and treble controls don't do much (well, treble does just a little bit more that bass, but still it doesn't help with the fatness), and the contour contr...
- 14 Jan 2013, 19:31
- Forum: Boutique Stompboxes dissected...
- Topic: Krank - Distortus Maximus [traced]
- Replies: 87
- Views: 41899
Re: Krank - Distortus Maximus [traced]
I have a problem with that effect. I made it using the following project: Krank Distortus Maximus - Big Louis 22.pdf As you can see I changed some components to, I think, scale down the tone stack. Unfortunately, when I fired this thing up, the volume control didn't shut it up completely. It was alw...
- 29 Nov 2012, 17:50
- Forum: DIY Projects
- Topic: BLACK FOREST - Based on the Bogner Uberschall
- Replies: 310
- Views: 63237
Re: BLACK FOREST - Based on the Bogner Uberschall
Anyone with the latest schematic? Also, I was wondering if I could achieve clean sounds if I omit some gain stages with a switch? I'd like to make a simple bedroom head with 2 channels, one eq, and ~15W output power.
- 29 Nov 2012, 17:46
- Forum: Printed/Published Online Designs
- Topic: SWEET REVENGE High gain preamp-Based on the Soldano Avenger
- Replies: 14
- Views: 5895
Re: SWEET REVENGE High gain preamp-Based on the Soldano Aven
What's up with that one? Have you tried it already? Have you tried incorporating the changes like the ones in Black Forest?
- 12 Sep 2012, 04:52
- Forum: Amplifiers
- Topic: BLOODY LITTLE BASTARD solid stage power amp
- Replies: 26
- Views: 23465
Re: BLOODY LITTLE BASTARD solid stage power amp
Not sure if I'm correct, but I've heard that chip amps have poor dynamics or something like that.
- 11 Sep 2012, 07:52
- Forum: Printed/Published Online Designs
- Topic: Solid state tube replacements? New or old design? Both!
- Replies: 9
- Views: 4920
Re: Solid state tube replacements? New or old design? Both!
Lol. First of all - they aren't the first to do this. I saw this kind of stuff long time ago, somewhere on the Internet. It wasn't a bestseller, as you may suspect. It was enclosed in a brass-looking metal, not in a colored aluminum heatsink like here. However, I'm deadly sure that THIS thing sounds...