The No.1 Website for Pro Audio
Sound Devices MixPre-6 with Rode NT-SF1
Old 30th March 2019
  #1
Here for the gear
 
Sound Devices MixPre-6 with Rode NT-SF1

I have a Sound Devices MixPre-6 with Rode NT-SF1. Which Ambisonics Mode is the right one for recording?
Old 31st March 2019
  #2
Gear Addict
 
🎧 5 years
! would start with A-format, then have the Rode Plugin convert it to B format or different. Looks like A>B format converters are tailored to a specific mic, so you'd need the Rode plugin for the best result.
Old 28th May 2019
  #3
Here for the gear
 
I have Sound Devices 788T and Soundfield 350ST and the new Rode SF1.

SF1 outputs A format. This is no problem to record on the 788T but you have no meaningful headphone monitoring. You can listen to each channel at a time, but there is no A format to stereo basic decode. The 788T has B format to stereo decode (dire tho it is). With the SF1 you are flying blind until you can get the A format signal into either the Rode plugin or something like Harpex
Old 7th December 2019
  #4
Lives for gear
 
TVPostSound's Avatar
 
🎧 10 years
Quote:
Originally Posted by ivolino ➡️
I have a Sound Devices MixPre-6 with Rode NT-SF1. Which Ambisonics Mode is the right one for recording?
Record A-Format. Convert with Rode plugin.

Sound Devices just confirmed to me that the internal B Format is tailored to
the Sennheiser Ambeo.
Old 29th January 2021
  #5
Gear Head
 
Hi everyone,
I made a basic test with my new NT-SF1 in a quiet room (mic connected to SoundDevices MixPre 6 II at 66dB cha 1-4 linked, 192kHz 32bit)
Please, look at the following two snapshots: ONE and TWO.
I noticed 3 things:
1. Channels 2 e 4 are paired and calibrated, whilst channels 1 and 3 are completely out of balance in comparison with 2 and 4! (This happens positioning the mic in every direction, so it doesn't depend on the room.)
2. There's a strange pick around 40-50k?
3. When I make a sound (with my voice) the 4 channels “tend” to raise to the same level, that's good, but this also means that capsules have different SNR, that's bad, so that difference between the channels is much more evident in low-noisy ambients, and less evident in noisy ambients. (Not a perfect behaviour IMHO.)

Question is: in Your opinion, my mic is damaged? Or Rode does tolerate this discrepancy in the 4 channels' calibration?

Thanks in advance.
Old 29th January 2021 | Show parent
  #6
Lives for gear
 
mljung's Avatar
 
1 Review written
🎧 10 years
Quote:
Originally Posted by adrjork ➡️
Hi everyone,
I made a basic test with my new NT-SF1 in a quiet room (mic connected to SoundDevices MixPre 6 II at 66dB cha 1-4 linked, 192kHz 32bit)
Please, look at the following two snapshots: ONE and TWO.
I noticed 3 things:
1. Channels 2 e 4 are paired and calibrated, whilst channels 1 and 3 are completely out of balance in comparison with 2 and 4! (This happens positioning the mic in every direction, so it doesn't depend on the room.)
2. There's a strange pick around 40-50k?
3. When I make a sound (with my voice) the 4 channels “tend” to raise to the same level, that's good, but this also means that capsules have different SNR, that's bad, so that difference between the channels is much more evident in low-noisy ambients, and less evident in noisy ambients. (Not a perfect behaviour IMHO.)

Question is: in Your opinion, my mic is damaged? Or Rode does tolerate this discrepancy in the 4 channels' calibration?

Thanks in advance.
I would definitely contact Rode, they have (in my experience) good warranty-service. NT-SF1 is supposed to be a high-quality microphone and you / we should expect tight tolerances.

::
Mads
Old 29th January 2021
  #7
Lives for gear
 
🎧 10 years
Another option..... https://www.facebook.com/permalink.p...31418576875192
Old 29th January 2021 | Show parent
  #8
Gear Head
 
Quote:
Originally Posted by David W. Jones ➡️
Cool! Thanks a lot! Unfortunately I do not know nothing similar here in Italy...
Old 30th January 2021 | Show parent
  #9
Lives for gear
 
TVPostSound's Avatar
 
🎧 10 years
Quote:
Originally Posted by adrjork ➡️
Cool! Thanks a lot! Unfortunately I do not know nothing similar here in Italy...
That looks like more than calibration.

Call Rode to repair, you have a 10 year warranty.

Before you call, put a test meter on your cable assembly.
Or open the XLR ends, and look for a broken wire.
Old 30th January 2021 | Show parent
  #10
Gear Head
 
Quote:
Originally Posted by TVPostSound ➡️
Before you call, put a test meter on your cable assembly.
It's a good point! Thanks. But all test meters I've seen have only the plug for the XLR-side of the cable, not for the female-side of the cable (that's specific from Rode).
Can you tell me a specific test meter for Rode ambisonic cable? Thanks in advance.
Old 30th January 2021 | Show parent
  #11
Gear Head
 
Quote:
Originally Posted by TVPostSound ➡️
That looks like more than calibration.
Ok, it seems that my unit has a real problem, not simply calibration (and I agree, that difference between capsules' SNR isn't usual). I think I'll go for returning my unit for a refund.
Now, returning my unit means that I don't have a mic anymore: here in Europe the NT-SF1 is completely out of stock.
I have 2 possibilities:
1. Waiting a couple of months to buy a new NT-SF1;
2. Buying right now a Sennheiser Ambeo VR Mic.

I heard the Ambeo in a YT video comparison against NT-SF1, and I must say that I prefer the audio quality (especially the low-noise performance) of the Rode.
Anyway Ambeo is made with electret capsules that many people say are much better for outdoor recording (humidity, temperature...) And actually I plan to use the mic mainly for outdoor recordings (night, fog, sun...)

Question is: for my case do you recommend electret (Ambeo), or can I use safely the Rode?

Thanks in advance.
Old 30th January 2021 | Show parent
  #12
Lives for gear
 
TVPostSound's Avatar
 
🎧 10 years
Quote:
Originally Posted by adrjork ➡️
It's a good point! Thanks. But all test meters I've seen have only the plug for the XLR-side of the cable, not for the female-side of the cable (that's specific from Rode).
Can you tell me a specific test meter for Rode ambisonic cable? Thanks in advance.
The old fashion way, a VOM, and patience!!

Here is the pinout:

📝 Reply

Similar Threads

Thread / Thread Starter Replies / Views Last Post
replies: 619 views: 78935
Avatar for bassdivad
bassdivad 3 weeks ago
replies: 67 views: 12051
Avatar for adrjork
adrjork 29th January 2021
replies: 65 views: 7787
Avatar for J_Rogers
J_Rogers 8th April 2019
replies: 7 views: 931
Avatar for Daniel.abrusci
Daniel.abrusci 26th April 2020
Post Reply

Welcome to the Gearslutz Pro Audio Community!

Registration benefits include:
  • The ability to reply to and create new discussions
  • Access to members-only giveaways & competitions
  • Interact with VIP industry experts in our guest Q&As
  • Access to members-only sub forum discussions
  • Access to members-only Chat Room
  • Get INSTANT ACCESS to the world's best private pro audio Classifieds for only USD $20/year
  • Promote your eBay auctions and Reverb.com listings for free
  • Remove this message!
You need an account to post a reply. Create a username and password below and an account will be created and your post entered.


 
 
Slide to join now Processing…

Forum Jump
Forum Jump