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Re: Rode NT1-A requires 3 minutes warm-up time
On Thu, Oct 24, 2024 at 01:50 AM, Casey wrote:
It just makes me wonder if the dirty capsule might be reacting to changes in temperature/humidity. Might be a dumb long shot, but maybe Heinz should post pics of the capsule just to sanity check the situation? High humidity is a real problem here. I usually store microphones in dry boxes. Especially during the hot and humid summer season. The NT1-a seems to be particularly susceptible to moisture.
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Here are the capsule photos you requested. I added two photos from the circuit board as well.
It doesn't look very promising. I wonder what the other side of the capsule might look like, but I was afraid to take the back plate off. I guess Casey is not entirely wrong in the estimate. It could well be moisture damage.
Btw: Yesterday I registered the microphone with Rode. They promptly issued an extended warranty for the product until 2034. Maybe I'll send it in and ask for a cost estimate for a repair. Considering that the NT1-a came out in 1995, there may still be an additional defect in the circuit.
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I'm aware this is a Micbuilder and maybe not a Micrepairer group, so I really appreciate your responses.
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Perhaps one final question about cleaning large diaphragm capsules. I found many contradictory statements on the Internet. Is there a way to clean a capsule without kicking it in the bucket?! I saw that looked trustworthy and somehow made sense to me. Have any of you tried this method or perhaps know a more reliable way? I'm just wondering.
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Many thanks!
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Heinz
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Re: Rode NT1-A requires 3 minutes warm-up time
On Tue, Oct 22, 2024 at 08:06 AM, recordinghacks wrote:
It is very unlikely that capsule contamination causes the delayed warm-up time you describe. If the capsule were at fault, the mic would not start working later; the problem would be permanent....but sometimes capsules can cut in and out due to humidity causing a short on the capsule, no? Maybe not in the pattern we're seeing in this particular case, but just spitballing... I had a CAD E-350 that would stop working after you talked into it for a while because the humidity of the breath would combine with crap on the capsule and cause it to fail. Then after some time it would come back in. After a capsule cleaning it worked fine. (Probably this board helped me figure this out, can't recall now.) It just makes me wonder if the dirty capsule might be reacting to changes in temperature/humidity. Might be a dumb long shot, but maybe Heinz should post pics of the capsule just to sanity check the situation? ? |
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Re: Rode NT1-A requires 3 minutes warm-up time
A short update.
I tried a continuous test recording near the house for several hours today.
After 3 minutes, the recording continued for about an hour. Then the recording was paused for about 6 minutes and it continued recording again.
Every now and then there were interruptions.
It looks like it's dying.
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Re: Rode NT1-A requires 3 minutes warm-up time
On Wed, Oct 23, 2024 at 12:06 AM, recordinghacks wrote:
It is very unlikely that capsule contamination causes the delayed warm-up time you describe. If the capsule were at fault, the mic would not start working later; the problem would be permanent. ?
Hi Matt. Many thanks for your inputs. I will test the NT1-a for same time. Usually the recordings I do are several hours long. If the NT1-a works reliably after a three minute warm-up period, it might still be OK to use it as a (low cost) drop rig mic in the field. I will not try to clean the capsule surface. The popular capsule upgrade you mentioned sounds much more interesting. I will certainly do some research on this topic.
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@Ralf
I had to *LoL* when I saw the video at minute 3:55. ?The mic seems to be famous for its crisp reproduction properties. :-) Anyway. The NT1-a caught my attention when I listened to the recordings of . A field recordist from Island . To my ears his NT1-a NOS setup sounds really nice.
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I would like to experiment with the NT1-a as a third (MID) mic in a SimpleP48 Jecklin disc (OSS) setup I'm currently building.
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@kennjava
I hardly resist when I discover interesting microphones in junk boxes of reuse stores or at flea markets. I usually try to give them a second life or at least learn something about their design characteristics. Sometimes I get lucky and the mic's that I find aren't broken at all. Other times, only a simple repair is necessary or the installation of a battery in the hidden battery compartment. Regarding the NT1-a I will do some measurements. Unfortunately, I don't have an oscilloscope.?
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Many thanks!
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Heinz
Btw: The night ambiance recording has been recorded with a pair of SimpleP48 attached to a tree. In case somebody is interested. |
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Re: Rode NT1-A requires 3 minutes warm-up time
The only thing I have noticed so far is that there is some dirt andIt is very unlikely that capsule contamination causes the delayed warm-up time you describe. If the capsule were at fault, the mic would not start working later; the problem would be permanent. Edge-terminated capsules such as the one in the NT1-A are more susceptible to moisture damage than are center-terminated capsules, in my experience, but this would not manifest as a delay until signal is passed. Replacing the capsule would change the mic’s frequency response. That is a popular upgrade; you’d likely want to choose a capsule whose response does not require corrective high-frequency attenuation. But again it would not fix the circuit problem. PSA: attempts to clean a large-diaphragm capsule usually result in stripping the gold from the diaphragm. This ends the capsule’s service life. Gold adheres poorly to Mylar, and definitely will not withstand a cotton swab and solvent. — matt. |
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Re: Rode NT1-A requires 3 minutes warm-up time
Am 22.10.24 um 15:11 schrieb Heinz via groups.io:
...the NT1-a seems to be working perfectly. The sound is crisp and'Crisp' certainly is one way to describe it. :-) Interesting part starting at 3:55 Ralf -- Ralf R. Radermacher - K?ln/Cologne, Germany Blog : Audio : Fotos : |
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Re: Rode NT1-A requires 3 minutes warm-up time
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Take DC voltage measurements on the pc board, right when it first powers up and is dead, and again when the mic finally works.
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My first rough guess is that the voltage multiplier circuit that creates the capsule bias voltage doesn't start oscillating right away. You can check the oscillator with an oscilloscope.
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Rode NT1-A requires 3 minutes warm-up time
Hi together
I recently purchased a Rode NT1-a from a thrift store with a “No Tone” sticker on it.
If I connect it to the audio interface and activate phantom power it doesn't work.
Miraculously, after three minutes of warm-up time, the gain meters start and the NT1-a seems to be working perfectly. The sound is crisp and clear. No noise can be heard either.
I opened the mic body. The circuit board and the caps look clean. The only thing I have noticed so far is that there is some dirt and dust on the capsule diaphragm.
Does anyone have an idea what might be wrong? Should I replace the capsule?
Many thanks!
Heinz
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Re: Micbuilders group annual funding
...and that's a wrap, folks.? Please don't donate any more, I'd have to put more rows into my spreadsheet.
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As of right now, we have the $220 to keep the account going at groups.io, and we have a surplus of $49.39 for next year. Like every year, thank you all very much. This is the best online technical group I've been involved with, and the knowledge and content here is very high quality. Thanks, -Scott On 10/14/24 13:25, Scott Helmke wrote:
I’ll be able to produce an actual number this evening. But I’m pretty sure we’re 100% funded! --
---- Scott Helmke ---- scott@... ---- (734) 604-9340 ---- "I have ceased distinguishing between the religious and the secular, for everything is holy" - Joe Henry |
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Re: Micbuilders group annual funding
I’ll be able to produce an actual number this evening. But I’m pretty sure we’re 100% funded!
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Thanks, -Scott Sent from a mobile device. Please excuse my brevity. On Oct 13, 2024, at 8:39?PM, Scott Helmke <scott@...> wrote: |
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Re: Micbuilders group annual funding
Update:? We are currently at $194.39, including last year's surplus.? So we're basically $25 from being fully funded!
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Thanks, -Scott On 10/13/24 20:39, Scott Helmke wrote:
Welcome to the annual beg-a-thon for funding our space on Groups.io! --
---- Scott Helmke ---- scott@... ---- (734) 604-9340 ---- "I have ceased distinguishing between the religious and the secular, for everything is holy" - Joe Henry |
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Micbuilders group annual funding
Welcome to the annual beg-a-thon for funding our space on Groups.io!
The yearly cost is $220 USD.? Every year we've gotten more than enough from members to pay that bill... and usually a little surplus.? The surplus from last year is $28.73. So a few of you very kind folks kind of jumped the queue and already sent me money... right now we are at a total of $149.39, including last year's surplus.? So there's another ~$70 to go. Thanks, -Scott -- ---- Scott Helmke ---- scott@... ---- (734) 604-9340 ---- "I have ceased distinguishing between the religious and the secular, for everything is holy" - Joe Henry |
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Re: Annual fundraising
开云体育It’s going to be same as last year, my email or Jules, but we can wait a couple days. ?Give me a chance to look up the actual numbers.?Thanks, -Scott? On Oct 12, 2024, at 5:07?PM, kennjava <ken@...> wrote:
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Re: Annual fundraising
I was just going to email you Scott! I got the notice as well. If anyone has enjoyed the content here, we spend about 100 a year for the use of please send Scott or myself a couple dollars via PayPal. I'll let him chime in as I think we have a few bucks remaining from last year.?? Jules On Sat, Oct 12, 2024 at 1:53?PM Scott Helmke via <scott=scotthelmke.com@groups.io> wrote: Hey, it's that time of year again!? I'm out of town for a couple more --
Best Regards, Jules Ryckebusch 214 399 0931 |
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Annual fundraising
Hey, it's that time of year again!? I'm out of town for a couple more days, so I don't have access to my usual pitch and all that stuff. But basically the group costs a couple hundred dollars a year to run, and usually it's paid for by donations.
So it's on your radar now... when I get home I'll look up the amount, see if there's any surplus from last year, and all that stuff. As always thanks, not just for the support but for the fantastic content we have on this group. Thanks, -Scott -- ---- Scott Helmke ---- scott@... ---- (734) 604-9340 ---- "I have ceased distinguishing between the religious and the secular, for everything is holy" - Joe Henry |
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Re: ESD protection for HiZ inputs?
, indeed, RME uses it's own ASIO drivers
______________________________________________ YEs ... RME has a good reputation for being expensive - perhaps BECAUSE it is equally well known for maintaining good device drivers long after the product leaves the store. RME is one of the best companies in this regard. Just my take. JHR |
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Re: ESD protection for HiZ inputs?
Yes, indeed, RME uses it's own ASIO drivers Op di 8 okt 2024 om 13:44 schreef Ralf R Radermacher via <fotoralf=gmx.de@groups.io>: Am 08.10.24 um 12:37 schrieb thet via : -- Johan Vandermaelen 6 Moon Parrizal sonic scenography Hofveldweg 47, 9420 Aaigem Belgium +32(0)473 343 880 |
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Re: ESD protection for HiZ inputs?
Am 08.10.24 um 12:37 schrieb thet via groups.io:
Some people have RME Fireface 400/800 working on MacOS up to Sonoma atDo RME use their own drivers? Both the traveler and the Headzone are controlled via Apple Core Sound, so there are no particular drivers. The trouble with the traveler is that there's is nothing else on the market with comparable features and functions. Ralf -- Ralf R. Radermacher - K?ln/Cologne, Germany Blog : Audio : Fotos : |
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