nacho459
Well-known member
Do any of you black market entrepreneurs sell the MXL 2001 "Royer mod" PCBs? If not do any of you have the layout?
I know I asked before but I never found one.
I know I asked before but I never found one.
royer PCB
- Thread starter nacho459
- Start date
Help Support GroupDIY Audio Forum:
Kev
Well-known member
.... mmmm ... maybe
:roll:
:roll:
Kev
Well-known member
They are at the old Group DIY but I decided to add them to the new place so that when the old place closes they will still be ... somewhere.
http://www.diyfactory.com/data/misc/TubeMic_PS_CP.pdf
http://www.diyfactory.com/data/misc/TubeMic_PS_TL.pdf
http://www.diyfactory.com/data/misc/TubeMic_PS_BL.pdf
http://www.diyfactory.com/data/misc/TubeMic_PS_OL.pdf
http://www.diyfactory.com/data/misc/TubeMic_PS_CP.pdf
http://www.diyfactory.com/data/misc/TubeMic_PS_TL.pdf
http://www.diyfactory.com/data/misc/TubeMic_PS_BL.pdf
http://www.diyfactory.com/data/misc/TubeMic_PS_OL.pdf
wiz1der
Well-known member
Can I take that as a yes? I need one, and a parts list if you have it. Thats for the mxl2001 right?
Is this a simple First Project?
Is this a simple First Project?
Kev
Well-known member
err
umm
:roll:
well
let me think about that for a while
Simple project yes
but it's a microphone and they do have their issues.
Simple but could be tricky and at the end of the day that's the point.
Heavy hands can make a disaster of this.
Oh and there is some volts in the power supply so a degree of caution in there too.
umm
:roll:
well
let me think about that for a while
Simple project yes
but it's a microphone and they do have their issues.
Simple but could be tricky and at the end of the day that's the point.
Heavy hands can make a disaster of this.
Oh and there is some volts in the power supply so a degree of caution in there too.
Is there any reason why a person shouldn't try to do this without a PCB, just using perfboard for both the mic and the power supply boards?
It seems that with the help of these files for parts layout, it might be a lot simpler to use perfboard instead of trying to make a PCB (which, admittedly, I've never tried) or have one made.
Thanks for your patience on the beginner questions.
It seems that with the help of these files for parts layout, it might be a lot simpler to use perfboard instead of trying to make a PCB (which, admittedly, I've never tried) or have one made.
Thanks for your patience on the beginner questions.
pucho812
Well-known member
any chance you could turn it into g7? may work better since it is multi patern.
Marik
Well-known member
[quote author="Nat M."]Is there any reason why a person shouldn't try to do this without a PCB, just using perfboard for both the mic and the power supply boards?
[/quote]
Nope, no reason, except of perf. board is cheaper, faster, and easier to tweek. Got the hint? :wink:
[/quote]
Nope, no reason, except of perf. board is cheaper, faster, and easier to tweek. Got the hint? :wink:
nacho459
Well-known member
[quote author="Marik"][quote author="Nat M."]Is there any reason why a person shouldn't try to do this without a PCB, just using perfboard for both the mic and the power supply boards?
[/quote]
Nope, no reason, except of perf. board is cheaper, faster, and easier to tweek. Got the hint? :wink:[/quote]
That's what I'm planing on doing anyway, I just wanted to see the layout.
[/quote]
Nope, no reason, except of perf. board is cheaper, faster, and easier to tweek. Got the hint? :wink:[/quote]
That's what I'm planing on doing anyway, I just wanted to see the layout.
dukasound
Well-known member
Hi
If anyone made Royer mod with B2-Pro I make a pcb for it. I can send Corel od pdf ready to transfer. I make a hole to incorporate DB-EU on pcb.
Duka
If anyone made Royer mod with B2-Pro I make a pcb for it. I can send Corel od pdf ready to transfer. I make a hole to incorporate DB-EU on pcb.
Duka
Duka
Are you using the royer schematic? Tthe capsule voltage part of the circuit looks a little different . I also appers you have the gridwire soldered to a pcb pad. You want top make that in the air and off the PCB. You might have a hum pickup problem not using a transformer with a shield can. I would think for this microphone you would want a shielded can transformer.
Gus
Are you using the royer schematic? Tthe capsule voltage part of the circuit looks a little different . I also appers you have the gridwire soldered to a pcb pad. You want top make that in the air and off the PCB. You might have a hum pickup problem not using a transformer with a shield can. I would think for this microphone you would want a shielded can transformer.
Gus
dukasound
Well-known member
[quote author="Gus"]Duka
Are you using the royer schematic? Tthe capsule voltage part of the circuit looks a little different . I also appers you have the gridwire soldered to a pcb pad. You want top make that in the air and off the PCB. You might have a hum pickup problem not using a transformer with a shield can. I would think for this microphone you would want a shielded can transformer.
Gus[/quote]
Hi Gus
I used Royer schematic with 1G grid to ground, 100uF elco parallel to 750 ohm, 1K and 1uF for voltage and Wima 1uF to DB-EU, influenced by Zebra schematics. Also I asked on forum (you too) about can for transformer. I made mistake when I order transformer. Someone, I think Chris, told me that will be good and microphone chassis would be good can. I am thinking about other transformers who havent can. I appreciate your opinion about gridwire but I saw many circuit with gridwire on pcb. Here is very short connection 1G, grid-point 1 and capsule. In this circuit we can put wire from tube direct to capsule but how connect 1G?.
Thanks for comment.
Duka
Are you using the royer schematic? Tthe capsule voltage part of the circuit looks a little different . I also appers you have the gridwire soldered to a pcb pad. You want top make that in the air and off the PCB. You might have a hum pickup problem not using a transformer with a shield can. I would think for this microphone you would want a shielded can transformer.
Gus[/quote]
Hi Gus
I used Royer schematic with 1G grid to ground, 100uF elco parallel to 750 ohm, 1K and 1uF for voltage and Wima 1uF to DB-EU, influenced by Zebra schematics. Also I asked on forum (you too) about can for transformer. I made mistake when I order transformer. Someone, I think Chris, told me that will be good and microphone chassis would be good can. I am thinking about other transformers who havent can. I appreciate your opinion about gridwire but I saw many circuit with gridwire on pcb. Here is very short connection 1G, grid-point 1 and capsule. In this circuit we can put wire from tube direct to capsule but how connect 1G?.
Thanks for comment.
Duka
the 1 gig one end is connect to the grid wire and capsule. One end of the 1 gig is soldered the other in the air.
Yes some microphones have the gate or grid on the board however often they are charge amps circuits. Agate or grid on the board is asking for noise fro leakage paths. In the older neumann stuff like the u87 the gate is in the air. Even the cheap china stuff has insulated standoffs for hih Z connections
grid or gate on the PCB is a bad design but easier and cheaper to build.
Yes some microphones have the gate or grid on the board however often they are charge amps circuits. Agate or grid on the board is asking for noise fro leakage paths. In the older neumann stuff like the u87 the gate is in the air. Even the cheap china stuff has insulated standoffs for hih Z connections
grid or gate on the PCB is a bad design but easier and cheaper to build.
dukasound
Well-known member
[quote author="Gus"]the 1 gig one end is connect to the grid wire and capsule. One end of the 1 gig is soldered the other in the air.
Yes some microphones have the gate or grid on the board however often they are charge amps circuits. Agate or grid on the board is asking for noise fro leakage paths. In the older neumann stuff like the u87 the gate is in the air. Even the cheap china stuff has insulated standoffs for hih Z connections
grid or gate on the PCB is a bad design but easier and cheaper to build.[/quote]
Hi Gus
Dont be much critic :grin:
There isnt trace, only one point (like i connect three wire on turret) with three contact.
Duka
Yes some microphones have the gate or grid on the board however often they are charge amps circuits. Agate or grid on the board is asking for noise fro leakage paths. In the older neumann stuff like the u87 the gate is in the air. Even the cheap china stuff has insulated standoffs for hih Z connections
grid or gate on the PCB is a bad design but easier and cheaper to build.[/quote]
Hi Gus
Dont be much critic :grin:
There isnt trace, only one point (like i connect three wire on turret) with three contact.
Duka
Duka
I have learned the hard way that any leakage path can mess up the sound of a microphone. FWIW I had worked on a microphone that I had this cracky noise. It turned out my fingers made the 1 gig and 1000pf cap at the capsule to gate more conductive because of leakage I changed the 100pf and cleaned the 1 gig no more noise.
Even that one point on a pcb can have leakage paths to other parts of the circuit say you have the microphone in the cold temps outside then bring it inside water vapor will condense on the capsule and the PCB.
The one point on the board will work fine most of the time but why not be the best?
I have learned the hard way that any leakage path can mess up the sound of a microphone. FWIW I had worked on a microphone that I had this cracky noise. It turned out my fingers made the 1 gig and 1000pf cap at the capsule to gate more conductive because of leakage I changed the 100pf and cleaned the 1 gig no more noise.
Even that one point on a pcb can have leakage paths to other parts of the circuit say you have the microphone in the cold temps outside then bring it inside water vapor will condense on the capsule and the PCB.
The one point on the board will work fine most of the time but why not be the best?
dukasound
Well-known member
[quote author="Gus"]Duka
I have learned the hard way that any leakage path can mess up the sound of a microphone. FWIW I had worked on a microphone that I had this cracky noise. It turned out my fingers made the 1 gig and 1000pf cap at the capsule to gate more conductive because of leakage I changed the 100pf and cleaned the 1 gig no more noise.
Even that one point on a pcb can have leakage paths to other parts of the circuit say you have the microphone in the cold temps outside then bring it inside water vapor will condense on the capsule and the PCB.
The one point on the board will work fine most of the time but why not be the best?[/quote]
:grin: Thanks :grin:
You are the best :thumb:
You learned me much about mic!!!!!
I have learned the hard way that any leakage path can mess up the sound of a microphone. FWIW I had worked on a microphone that I had this cracky noise. It turned out my fingers made the 1 gig and 1000pf cap at the capsule to gate more conductive because of leakage I changed the 100pf and cleaned the 1 gig no more noise.
Even that one point on a pcb can have leakage paths to other parts of the circuit say you have the microphone in the cold temps outside then bring it inside water vapor will condense on the capsule and the PCB.
The one point on the board will work fine most of the time but why not be the best?[/quote]
:grin: Thanks :grin:
You are the best :thumb:
You learned me much about mic!!!!!
Test Point
Well-known member
[quote author="Gus"]Duka
I have learned the hard way that any leakage path can mess up the sound of a microphone. FWIW I had worked on a microphone that I had this cracky noise. It turned out my fingers made the 1 gig and 1000pf cap at the capsule to gate more conductive because of leakage I changed the 100pf and cleaned the 1 gig no more noise.
Even that one point on a pcb can have leakage paths to other parts of the circuit say you have the microphone in the cold temps outside then bring it inside water vapor will condense on the capsule and the PCB.
quote]
Hi Gus...I learned after working on Ph meters that used 30 gigohm resistors in them that if you put the high resistance resistors in denatured alcohol until they are ready to be installed and wear clean(also cleaned with alcohol) latex rubber gloves when installing them and you will very rarely have problems with contaminated parts. I have also seen problems with fets as they also have very high impedance inputs and they also can become noisey when contaminated....and of course, make sure the pcb is absolutely cleaned of flux (especially water soluble, also called organic, flux). This flux is not only conductive because it absorbs water but also is mildly corrosive....a good douche of flux-off or a variation works well
TP
I have learned the hard way that any leakage path can mess up the sound of a microphone. FWIW I had worked on a microphone that I had this cracky noise. It turned out my fingers made the 1 gig and 1000pf cap at the capsule to gate more conductive because of leakage I changed the 100pf and cleaned the 1 gig no more noise.
Even that one point on a pcb can have leakage paths to other parts of the circuit say you have the microphone in the cold temps outside then bring it inside water vapor will condense on the capsule and the PCB.
quote]
Hi Gus...I learned after working on Ph meters that used 30 gigohm resistors in them that if you put the high resistance resistors in denatured alcohol until they are ready to be installed and wear clean(also cleaned with alcohol) latex rubber gloves when installing them and you will very rarely have problems with contaminated parts. I have also seen problems with fets as they also have very high impedance inputs and they also can become noisey when contaminated....and of course, make sure the pcb is absolutely cleaned of flux (especially water soluble, also called organic, flux). This flux is not only conductive because it absorbs water but also is mildly corrosive....a good douche of flux-off or a variation works well
TP
bradzatitagain
Well-known member
- Joined
- Oct 7, 2004
- Messages
- 295
[quote author="wiz1der"]Can I take that as a yes? I need one, and a parts list if you have it. Thats for the mxl2001 right?
Is this a simple First Project?[/quote]
The parts list is on the last page of the original TapeOp article:
http://www.mojaveaudio.com/
SD is there also. Anyone ever fiddle with the partial 5718 circuits David uses as illustrations in the SD article?
Is this a simple First Project?[/quote]
The parts list is on the last page of the original TapeOp article:
http://www.mojaveaudio.com/
SD is there also. Anyone ever fiddle with the partial 5718 circuits David uses as illustrations in the SD article?
