TillM
Well-known member
Icantthinkofaname said:
I had them.
It seams to me, that the capsule was the same that Banzai sold with his KM84 kits.
The customs part was the fitting for the NT5.
You could unscrew the capsule from the mesh part.
What mods did Joly do to the MXL 990?
- Thread starter Icantthinkofaname
- Start date
Help Support GroupDIY Audio Forum:
I had them.
It seams to me, that the capsule was the same that Banzai sold with his KM84 kits.
The customs part was the fitting for the NT5.
You could unscrew the capsule from the mesh part.
Icantthinkofaname
Well-known member
So basically Joly was taking cheap but decent capsules and selling them for a lot more like with his mods?TillM said:
I have no problem with people charging for a mod service, but installing a $30 capsule and changing one or two capacitors isn't worth a few hundred dollars IMO.
Perhaps, but that's a "magic mojo" capsule, and capacitors made by nude virgins in the unicorn rainforest... ;D
How can you tell me that's not worth selling off one or two unessential organs?
[end of sarcasm... for now]
As the saying goes, though - a fool and his money are soon parted...
How can you tell me that's not worth selling off one or two unessential organs?
[end of sarcasm... for now]
As the saying goes, though - a fool and his money are soon parted...
Icantthinkofaname said:
rogs
Well-known member
Khron said:Perhaps, but that's a "magic mojo" capsule, and capacitors made by nude virgins in the unicorn rainforest... ;D
How can you tell me that's not worth selling off one or two unessential organs?
[end of sarcasm... for now]
As the saying goes, though - a fool and his money are soon parted...
You've missed the vital ingredient - for optimum results, the capsule must be secured to the saddle with wooden screws - with all the screw heads aligned towards true north
Oh, those are just the "cherry on top" (or if we go more AvE-like, the "twist at the top" ;D )
Confirmation bias is where it's at... Especially a few weeks and a couple hundred bucks later :
(or if we go more AvE-like, the "twist at the top" ;D )Confirmation bias is where it's at... Especially a few weeks and a couple hundred bucks later :
rogs said:You've missed the vital ingredient - for optimum results, the capsule must be secured to the saddle with wooden screws - with all the screw heads aligned towards true north
The title of threads like this make little sense to me.
You have this forum and others as well as at least one web site that get the Schoeps circuit correctly.
Why not do some searches and some thinking and figure out adjustments.
I do not like the term mod. Most of the time it changing some parts and adjusting some values.
You have this forum and others as well as at least one web site that get the Schoeps circuit correctly.
Why not do some searches and some thinking and figure out adjustments.
I do not like the term mod. Most of the time it changing some parts and adjusting some values.
Seeker
Well-known member
1nF 500V silver mica. C20 being the... capsule-to-JFET-gate capacitor, or..?
(Since the only silkscreen on the NT1-A board seems to be on the "top" side, and all the SMD components are on the bottom...)
http://cdn.recordinghacks.com/images//mic_extras/rode/NT1A_pcb.jpg
(Since the only silkscreen on the NT1-A board seems to be on the "top" side, and all the SMD components are on the bottom...)
http://cdn.recordinghacks.com/images//mic_extras/rode/NT1A_pcb.jpg
Seeker said:
Seeker
Well-known member
Khron said:
C20 in that pic is the large smd cap in between the capsule connections. It actually goes from the backplate to ground. In this circuit the backplate is polarized and there is no cap in between the mic capsule and the jfet. I removed this cap completely, and found that to give the best sound.
Icantthinkofaname
Well-known member
What I was trying to find out is what changes he made to warrant the price he was asking. Because a lot of mic services I've seen either swap the capsule for a $30 Chinese one and change a couple caps, maybe add EQ to the circuit and then charge you $300-$500 bucks.Gus said:
Seeker
Well-known member
Khron said:
Well I'm no mic guru but in most mics Im aware of theres a high value resistor in between the filter caps and the mic capsule, effectively preventing the filter caps from interacting with the capsule, in this setup the cap is after the high value resistor connected to the backplate. Wouldn't this act as a frequency dependent filter?
I can say this much, Joly heard a difference and replaced the original, and I heard a difference when I replaced his and then when I removed it completely.
If you have a mic that has a un grounded capsule configuration like this you might try putting a cap from the backplate to ground and see if you hear tonal differences...
Slight caveat there - "usually" yes, the bias voltage is indeed fed to the capsule via a 1G resistor, BUT in those cases, the backplate is grounded, the front diaphragm is pulled up to the bias voltage, and the signal is coupled through a capacitor to the JFET gate.
In the case of the NT1-A, the capsule itself is used "as" the DC-blocking capacitor, so the bias voltage is (and needs to be) connected to the backplate, since the JFET's gate is pulled to groung through the ("other") 1G resistor.
That being said, at least apparently, there are TWO filter capacitors right after that 4.7Meg resistor. The big bulky stock "C20" is an SMD film capacitor, so at least in theory, already pretty good, all in all. I wonder if that is/was the 100nF or the 10nF one from the schematic.
It would (or rather, would have been) interesting to see some before / after measurements. Maybe i'm weird, but i tend not to believe "hearsay" all that much (no offense intended)
In the case of the NT1-A, the capsule itself is used "as" the DC-blocking capacitor, so the bias voltage is (and needs to be) connected to the backplate, since the JFET's gate is pulled to groung through the ("other") 1G resistor.
That being said, at least apparently, there are TWO filter capacitors right after that 4.7Meg resistor. The big bulky stock "C20" is an SMD film capacitor, so at least in theory, already pretty good, all in all. I wonder if that is/was the 100nF or the 10nF one from the schematic.
It would (or rather, would have been) interesting to see some before / after measurements. Maybe i'm weird, but i tend not to believe "hearsay" all that much
(no offense intended)Seeker said:
Add a switch that turns on and off the capacitor, put the mic on a stand, play some audio through speaker, turn the cap on and off. Flip the phase on one of the takes, allign them, and hear if there is any difference between the takes.
My guess would be the difference in the noise floor level if any. The same goes for capacitor type swaps. Been there, done that, never measured/heard anything. Null test is the ultimate thing, easy to do, yet never mentioned.
My guess would be the difference in the noise floor level if any. The same goes for capacitor type swaps. Been there, done that, never measured/heard anything. Null test is the ultimate thing, easy to do, yet never mentioned.
Yeah, but that would involve some measure of use of the scientific method, which is quite frowned upon in most(?) audio / music-related circles... ;D (especially when there are products and services to be sold...)
kingkorg said:
rogs said:You've missed the vital ingredient - for optimum results, the capsule must be secured to the saddle with wooden screws - with all the screw heads aligned towards true north
Any tips for the kind of wood? ;-)
I mean, I expect fir to sound somewhat different from iron wood...
rogs
Well-known member
cyrano said:
For a full range response - especially at lower frequencies - I think the wood of the Linden tree ( also known as American Basswood)
- is generally to be preferred.
....Oh, so not mahogany? There's been trouble with rosewood, i hear, but what about ebony then? Bubinga, wenge? ;D
rogs said:For a full range response - especially at lower frequencies - I think the wood of the Linden tree ( also known as American Basswood)
- is generally to be preferred.
Hey, that's cheating! We were talking "only" about wooden screws for securing the capsule to the saddle, not wooden headbaskets or veneered body-tubes ;D
But i guess that's not my first "neighbour" to dabble in fancy stuff...
But i guess that's not my first "neighbour" to dabble in fancy stuff...
kingkorg said:You guys just keep on joking
http://rakennetaankitara.blogspot.com/2016/02/woody-tones-microphones.html?m=1
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