Coronargakon
Member
- Joined
- Dec 29, 2015
- Messages
- 8
Hi there,
A couple of years ago I got a used Miktek CV4 and found as many other owners that the highs are a little bit annoying. I have swapped the stock capsule to a new Beesneez K47 (thanks to the member McIrish) and to my surprise not only the CV4 is now having a very well balanced highs but also the low mids is now more healthy/dominant too. Highly recommend the swapping to K47 from the stock capsule.
An issue that I really need your valuable technical knowledge:
I am getting from the stock PSU a very very weak hum which is obvious only when in silent passages / arming the recording process. This hum was there before swapping the capsule. Measuring the voltage on pin 2 of the 7 pin cable with mic unplugged it provides 6.76V (!). This isn’t outside the 6.3V specs that EF800 accepts for the heating voltage?
I made use of another PSU (Beesneez) that provides 6V via the pin 2 and the CV4 works ok. No hum at all! Dead silent. However after many recording tests of my voice using the Beesneez PSU and carefully comparing the results to the stock PSU I could definitively say that using the stock PSU I am getting more pronounced low mids.
My question is:
Your reply will be highly appreciated.
Christos
![IMG_5227.jpeg IMG_5227.jpeg](https://cdn.imagearchive.com/groupdiy/data/attachments/84/84592-6a39f62c94ab378172b76c0d081498de.jpg)
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![IMG_3767.jpeg IMG_3767.jpeg](https://cdn.imagearchive.com/groupdiy/data/attachments/84/84587-555016960b39a45094fb05a7474bd360.jpg)
A couple of years ago I got a used Miktek CV4 and found as many other owners that the highs are a little bit annoying. I have swapped the stock capsule to a new Beesneez K47 (thanks to the member McIrish) and to my surprise not only the CV4 is now having a very well balanced highs but also the low mids is now more healthy/dominant too. Highly recommend the swapping to K47 from the stock capsule.
An issue that I really need your valuable technical knowledge:
I am getting from the stock PSU a very very weak hum which is obvious only when in silent passages / arming the recording process. This hum was there before swapping the capsule. Measuring the voltage on pin 2 of the 7 pin cable with mic unplugged it provides 6.76V (!). This isn’t outside the 6.3V specs that EF800 accepts for the heating voltage?
I made use of another PSU (Beesneez) that provides 6V via the pin 2 and the CV4 works ok. No hum at all! Dead silent. However after many recording tests of my voice using the Beesneez PSU and carefully comparing the results to the stock PSU I could definitively say that using the stock PSU I am getting more pronounced low mids.
My question is:
- Is it normal for the stock PSU to provide 6.76V heating voltage to EF800? If no, is this a point that can be examined by technician for that weak hum I am getting from the stock CV4’s PSU? Using more heating voltage can affecting the low mids behavior of the mic?
- Inside the stock PSU there are the following 6 electrolytic caps: 400v/22μF (4 caps) and 25V/10,000μF. (2 caps).Which branch/model could you recommend in order to replace those Chinese TL caps mentioned aboved? All stock are 105 degrees temp. Panasonic and Nichicon are both first class choice but which model/series exactly could do the job perfectly?…
Your reply will be highly appreciated.
Christos
![IMG_5227.jpeg IMG_5227.jpeg](https://cdn.imagearchive.com/groupdiy/data/attachments/84/84592-6a39f62c94ab378172b76c0d081498de.jpg)
![IMG_5230.jpeg IMG_5230.jpeg](https://cdn.imagearchive.com/groupdiy/data/attachments/84/84589-f550e9c20a90ce4bbc84ce6feebb3912.jpg)
![IMG_3582.jpeg IMG_3582.jpeg](https://cdn.imagearchive.com/groupdiy/data/attachments/84/84579-d046d5c450a31e46388fdeb07aa7f041.jpg)
![IMG_3587.jpeg IMG_3587.jpeg](https://cdn.imagearchive.com/groupdiy/data/attachments/84/84580-489b7f913dfa1cf8da102f59259fd9e0.jpg)
![IMG_3603.jpeg IMG_3603.jpeg](https://cdn.imagearchive.com/groupdiy/data/attachments/84/84581-56a586ec22bfdd103266595b85251045.jpg)
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