Median Compressor Questions
- Thread starter joelorigo
- Start date
Feral Feline
Well-known member
I can always use more 2N5457, so I'd just get the PPCB ones and try them out, measure them and use the ones that most closely match the parameters set in the build doc.
Have you got any Bat42?
Have you got any Bat42?
zeropluszero
Active member
I had the exact same question trying to build the Median as well.
i got some bat42, 41, 46, but no bat43
i got some bat42, 41, 46, but no bat43
darwin999
Well-known member
Digikey has BAT43 for $0.14/ea or 10/$0.98
And Mouser also carries them.
And Mouser also carries them.
zeropluszero
Active member
Emailed Tayda, they said a restock in around 2weeks.
joelorigo
Well-known member
oh great thanks! They very well might have them then by the time I am ready to order then. I have saved carts for 4 PedalPCB builds. But I’m also out of work so I don’t know when I will actually order. But by then they might be out of something else in my carts lol.
joelorigo
Well-known member
Thanks!
joelorigo
Well-known member
I have BAT41 I believe.
joelorigo
Well-known member
I just build for myself and mostly get parts as needed. How many of the 2N5457 would you get to get a matching pair?
Feral Feline
Well-known member
I'm mainly building for myself and occasionally gift a pedal to a friend.
We all have our preferences in how to go about this hobby, though; mine is to have a large stash though I'm constantly finding things I don't have and want/need for a build. JFETs for instance...
There are dozens upon dozens of builds that I'd like to eventually get to that could take a 2N5457.
For example: Boosts that call for a J113 or MPF102 can be kajiggered to accept a 2N5457, which will give a little more gain.
IIRC, subbing out the J201 with a 2N5457 will reduce gain a little and possibly smooth out some dirt circuits for bass.
There are many resources online at DIYSB, FSB, Muff-Wiggler, MBP-Forum and elsewhere, but our cozy home right here is a great place to start with Temol's thread:
Question: what's the J201 substitute for ....? Is there a J201 substitute?
Answer: it depends
I'd like to share my point of view for a J201 replacements, using Son of Ben an an example.
So we're using JFET for amplifying signal (gain stage).
But before I start with measurements, ltspice sim results, etc...
Most schematics do not mention anything about JFET parameters (Vp, Idss) so even if we have the same transistor model, we cannot be sure that the parameters of the transistors we intend to use are similar to those of the original circuit. The use of a substitute complicates the...
Answer: it depends
I'd like to share my point of view for a J201 replacements, using Son of Ben an an example.
So we're using JFET for amplifying signal (gain stage).
But before I start with measurements, ltspice sim results, etc...
Most schematics do not mention anything about JFET parameters (Vp, Idss) so even if we have the same transistor model, we cannot be sure that the parameters of the transistors we intend to use are similar to those of the original circuit. The use of a substitute complicates the...
Wrapping up the Pharmacist build and wondering if I can use J201s as a sub for the 2n5457s.
Thank you build gurus.
Thank you build gurus.
Look into the Boneyard for Chuck's deep dive into JFETs.
To answer your question:
I'd get a baker's dozen, hopefully that would do it. With SMD equivalents mounted to adapter boards for through-hole, you're even more likely to get a good match as SMD stuff, from what I've read, is more consistent —
OKAY
OKAY
I confess! ...
... I order matched sets from GuitarPCB, Aion and Lectric-FX!
I swear I'll do it again — yes, even though I have a JFET-Matcher PCB — yeah, for phasers and anything else that needs matching.
and... YOU CAN'T STOP ME!!!
joelorigo
Well-known member
Thank you for all of that!I'm mainly building for myself and occasionally gift a pedal to a friend.
We all have our preferences in how to go about this hobby, though; mine is to have a large stash though I'm constantly finding things I don't have and want/need for a build. JFETs for instance...
There are dozens upon dozens of builds that I'd like to eventually get to that could take a 2N5457.
For example: Boosts that call for a J113 or MPF102 can be kajiggered to accept a 2N5457, which will give a little more gain.
IIRC, subbing out the J201 with a 2N5457 will reduce gain a little and possibly smooth out some dirt circuits for bass.
There are many resources online at DIYSB, FSB, Muff-Wiggler, MBP-Forum and elsewhere, but our cozy home right here is a great place to start with Temol's thread:
Question: what's the J201 substitute for ....? Is there a J201 substitute?
Answer: it depends
I'd like to share my point of view for a J201 replacements, using Son of Ben an an example.
So we're using JFET for amplifying signal (gain stage).
But before I start with measurements, ltspice sim results, etc...
Most schematics do not mention anything about JFET parameters (Vp, Idss) so even if we have the same transistor model, we cannot be sure that the parameters of the transistors we intend to use are similar to those of the original circuit. The use of a substitute complicates the...
Wrapping up the Pharmacist build and wondering if I can use J201s as a sub for the 2n5457s.
Thank you build gurus.
Look into the Boneyard for Chuck's deep dive into JFETs.
To answer your question:
I'd get a baker's dozen, hopefully that would do it. With SMD equivalents mounted to adapter boards for through-hole, you're even more likely to get a good match as SMD stuff, from what I've read, is more consistent —
OKAYOKAYI confess! ...
View attachment 98175
... I order matched sets from GuitarPCB, Aion and Lectric-FX!
I swear I'll do it again — yes, even though I have a JFET-Matcher PCB — yeah, for phasers and anything else that needs matching.
and... YOU CAN'T STOP ME!!!
“You bounder, you cheat!” -John Lennon