input buffers
- AbuseArt
- Breadboard Brother
Information
- Posts: 127
- Joined: 24 Mar 2009, 22:17
- my favorite amplifier: laney lc15
- Completed builds: Vox Clyde McCoy
Rebote Delay 2.5
Tube Screamer TS-808
Exotic AC Booster
Marshall Guv'nor
Big Muff Pi
Big Muff Triangle
EH Pulsar
Joe's Simple Overdrive - Location: Poland
- Contact:
Sorry for posting another thread but I think it should go to separate one.
1. Please show me input buffers you have done and you are happy with them. I want to place the buffer in wah-wah, tubescreamer, blue box, big muff triangle and some other pedals to protect my tone from input impedance of each pedal.
this is the way I want to use the buffers CLICK
I have few FETs and bc550Cs. Op amps too.
2. why this one has two 1M resistors?
https://img6.imageshack.us/img6/9443/buffers.jpg
1. Please show me input buffers you have done and you are happy with them. I want to place the buffer in wah-wah, tubescreamer, blue box, big muff triangle and some other pedals to protect my tone from input impedance of each pedal.
this is the way I want to use the buffers CLICK
I have few FETs and bc550Cs. Op amps too.
2. why this one has two 1M resistors?
https://img6.imageshack.us/img6/9443/buffers.jpg
- Silent Fly
- Resistor Ronker
As a starting point I would recommend you have a look at any Boss schematics. A lot of them use transistor-based in/out buffers.
"Remember - all I am offering is the truth, nothing more". Morpheus
- modman
- a d m i n
Information
- Posts: 4890
- Joined: 19 Jun 2007, 16:57
- Has thanked: 4394 times
- Been thanked: 2131 times
viewtopic.php?f=13&t=858
viewtopic.php?f=22&t=2139
viewtopic.php?f=22&t=394
the last one is about the true bypass myth, you should have a look at that thread too.
viewtopic.php?f=22&t=2139
viewtopic.php?f=22&t=394
the last one is about the true bypass myth, you should have a look at that thread too.
Please, support freestompboxes.org on Patreon for just 1 pcb per year! Or donate directly through PayPal
- earthtonesaudio
- Transistor Tuner
The buffer in red in the schematic doesn't need the .05 cap or the 1M resistor. Just connect from the top of the 100k wah pot directly to the JFET gate, no other connections to the gate, for better frequency response.
rocklander wrote:hairsplitting and semantics aren't exactly the same thing though.. we may need two contests for that.
- AbuseArt
- Breadboard Brother
Information
- Posts: 127
- Joined: 24 Mar 2009, 22:17
- my favorite amplifier: laney lc15
- Completed builds: Vox Clyde McCoy
Rebote Delay 2.5
Tube Screamer TS-808
Exotic AC Booster
Marshall Guv'nor
Big Muff Pi
Big Muff Triangle
EH Pulsar
Joe's Simple Overdrive - Location: Poland
- Contact:
@earthtonesaudio, does it fit to other effects?
do you think it solves my problem? Inputs are still unbypassed. Moreover there's resistance at output of this buffer. It has to be bypass improvement...
Today I compared my signal with two pedals and no pedals. I never realised two effects can kill so much trebles...
do you think it solves my problem? Inputs are still unbypassed. Moreover there's resistance at output of this buffer. It has to be bypass improvement...
Today I compared my signal with two pedals and no pedals. I never realised two effects can kill so much trebles...
- AbuseArt
- Breadboard Brother
Information
- Posts: 127
- Joined: 24 Mar 2009, 22:17
- my favorite amplifier: laney lc15
- Completed builds: Vox Clyde McCoy
Rebote Delay 2.5
Tube Screamer TS-808
Exotic AC Booster
Marshall Guv'nor
Big Muff Pi
Big Muff Triangle
EH Pulsar
Joe's Simple Overdrive - Location: Poland
- Contact:
Can I use 680nF NP instead of 1uF NP? Or electrolitic 1uF ?
What does this cap do?
What does this cap do?
- earthtonesaudio
- Transistor Tuner
In your drawing here: download/file.php?id=3106
Your buffer is connected all the time to "input," so if the input is a guitar, you can replace the 1M pull down and input coupling cap with a wire going to the guitar's volume pot. This won't cause any noticeable "tone suck" until you have a lot (hundreds) of input buffers connected in parallel like this.
But I'm not quite clear on what you want to do/achieve. Do you want to add a buffer to each effect's input, or just use one buffer at the beginning of a chain of effects, or...?
Your buffer is connected all the time to "input," so if the input is a guitar, you can replace the 1M pull down and input coupling cap with a wire going to the guitar's volume pot. This won't cause any noticeable "tone suck" until you have a lot (hundreds) of input buffers connected in parallel like this.
But I'm not quite clear on what you want to do/achieve. Do you want to add a buffer to each effect's input, or just use one buffer at the beginning of a chain of effects, or...?
rocklander wrote:hairsplitting and semantics aren't exactly the same thing though.. we may need two contests for that.
- AbuseArt
- Breadboard Brother
Information
- Posts: 127
- Joined: 24 Mar 2009, 22:17
- my favorite amplifier: laney lc15
- Completed builds: Vox Clyde McCoy
Rebote Delay 2.5
Tube Screamer TS-808
Exotic AC Booster
Marshall Guv'nor
Big Muff Pi
Big Muff Triangle
EH Pulsar
Joe's Simple Overdrive - Location: Poland
- Contact:
Honestly, I'm not sure at all which way to choose. I'm waiting for some advice. I have very badly sucked tone, I lose a lot of trebles and volume even if I plug only Blue Box and Big Muff. 3PDTs are unavailable in my country but I still need diodes in most of pedals(but I'd love to have diode in each one). The worst problem is actually the Blue Box - it needs bypass with grounded input but this kind of wiring is absolutely not true bypass I have nice valve amp and want to hear its real sound.earthtonesaudio wrote:But I'm not quite clear on what you want to do/achieve. Do you want to add a buffer to each effect's input, or just use one buffer at the beginning of a chain of effects, or...?
what about millenium bypass?
The grounded input bypass is true bypass, and yes, if you can only get DPDT switches, then you should go with millenium bypass which allows you to get true bypass and LED indicators. There is too much information around about it, starting from the creator's home, GEOFEX.
Other than that, you can still experience some serious muddying of your guitar's sound and it's because of the cables, sou you would benefit of having a buffer at the beginning of the effects.
Other than that, you can still experience some serious muddying of your guitar's sound and it's because of the cables, sou you would benefit of having a buffer at the beginning of the effects.
The Freestompboxes Forum search function is soo great, use the search function..., the S E A R C H function.
- AbuseArt
- Breadboard Brother
Information
- Posts: 127
- Joined: 24 Mar 2009, 22:17
- my favorite amplifier: laney lc15
- Completed builds: Vox Clyde McCoy
Rebote Delay 2.5
Tube Screamer TS-808
Exotic AC Booster
Marshall Guv'nor
Big Muff Pi
Big Muff Triangle
EH Pulsar
Joe's Simple Overdrive - Location: Poland
- Contact:
yep thats true. i'm very scatty and mixed sth up.Fuzzer wrote:The grounded input bypass is true bypass
Is this version good? http://www.guitar-pedals-effects.com/No ... Image2.jpg
Can I use BF245A ?
- AbuseArt
- Breadboard Brother
Information
- Posts: 127
- Joined: 24 Mar 2009, 22:17
- my favorite amplifier: laney lc15
- Completed builds: Vox Clyde McCoy
Rebote Delay 2.5
Tube Screamer TS-808
Exotic AC Booster
Marshall Guv'nor
Big Muff Pi
Big Muff Triangle
EH Pulsar
Joe's Simple Overdrive - Location: Poland
- Contact:
one more question: Is it worth to buy Darlingtons?
- RnFR
- Old Solderhand
Information
i've used that version with good effect. and i don't think you need darlington transistors with buffers, as you aren't actually getting any extra gain out of the circuit anyway.AbuseArt wrote:yep thats true. i'm very scatty and mixed sth up.Fuzzer wrote:The grounded input bypass is true bypass
Is this version good? http://www.guitar-pedals-effects.com/No ... Image2.jpg
Can I use BF245A ?
"You've converted me to Cubic thinking. Where do I sign up for the newsletter? I need to learn more about how I can break free from ONEism Death Math." - Soulsonic
Blog-APOCALYPSE AUDIO
Blog-APOCALYPSE AUDIO