Avid Pro Audio Community

Avid Pro Audio Community

How to Join & Post  •  Community Terms of Use  •  Help Us Help You

Knowledge Base Search  •  Community Search  •  Learn & Support


Avid Home Page

Go Back   Avid Pro Audio Community > Pro Tools Software > Windows

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 08-23-2014, 05:29 AM
Terry Wetzel Terry Wetzel is offline
Member
 
Join Date: Apr 2011
Location: Douglasville, Georgia
Posts: 1,408
Default An uneducated question.

I'm just curious. What difference, if any, does recording at -10dB make as opposed to +4dB other than Playback volume ? On all my equipment the recording levels are selectable but I detect no difference other than playback level. Any comments?
Reply With Quote
  #2  
Old 08-23-2014, 06:45 AM
zedhed's Avatar
zedhed zedhed is offline
Member
 
Join Date: Jan 2001
Location: Auckland, New Zealand
Posts: 3,933
Default Re: An uneducated question.

The 11th post in this thread;
http://www.gearslutz.com/board/newbi...n-exactly.html
__________________
Too much blood in my drugstream

Motherboard: Gigabyte Z690 AERO D
CPU: Intel Alder Lake Core i9-12900K
CPU Cooler: Noctua NH-D15S
RAM: Corsair Vengeance DDR5 64GB (2x 32gb 5200MHz)
Drives: 2 x Samsung 980 Pro 2TB NVME PCIE 4.0 M.2 SSD (Record & Samples)
1 x Samsung 980 Pro 1TB NVME PCIE 4.0 M.2 SSD (OS Win 11 Pro)

GPU:Gigabyte GeForce RTX 3060 12GB GDDR6 PCIE 4
PSU: Corsair HX Series HX850 Platinim
CASE: Fractal Define XL R2
PT 11HD (v11.3.2) Omni s/pdif <> AxeFxIII
HD 96I/O
Reply With Quote
  #3  
Old 08-23-2014, 07:55 AM
nst7 nst7 is offline
Member
 
Join Date: Oct 2008
Location: Cincinnati OH
Posts: 9,838
Default Re: An uneducated question.

Generally speaking, most pro gear uses +4, and consumer stuff like cassette decks, CD players, etc., use -10.
Reply With Quote
  #4  
Old 08-23-2014, 09:06 AM
sw rec sw rec is offline
Member
 
Join Date: Oct 2005
Location: Colo Spgs Colo
Posts: 5,937
Default Re: An uneducated question.

AND feeding a +4 signal into a -10 input overloads the input circuitry, and causes an impedance mismatch, since most +4 gear is 600 ohms, and most -10 gear is around 50k.
Other side of the coin...feeding +4 input stage with a -10 signal will typically not have enough gain to record outside of the inherent noise floor, so when you turn it up to make up for not enough signal, it's very noisy. (Think of trying to jump-start a Cadillac with a watch battery...)
What's important is that all the links in your signal chain have matching signal levels.
Addendum....the primary point of a +4 BALANCED line is to remove the ground from the signal path. So it's quieter by design. And the difference is HUGE.

Last edited by sw rec; 08-24-2014 at 10:50 AM.
Reply With Quote
  #5  
Old 08-26-2014, 05:23 AM
Terry Wetzel Terry Wetzel is offline
Member
 
Join Date: Apr 2011
Location: Douglasville, Georgia
Posts: 1,408
Default Re: An uneducated question.

Thanks zedhed. Very informative link. Thanks also nst7 andsw rec. That clears it up for me.
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
fruity loops in pro tools question...not regular rewire question nutrinoland 003, Mbox 2, Digi 002, original Mbox, Digi 001 (Win) 1 04-23-2010 12:39 PM
Question: Computers for Dummies Question to be Exact themadarchitect 003, Mbox 2, Digi 002, original Mbox, Digi 001 (Win) 11 02-05-2010 10:26 AM
quick question - Mbox Mini question - i forget JRup 003, Mbox 2, Digi 002, original Mbox, Digi 001 (Win) 4 10-18-2009 02:55 PM
General Venue Automation Question - (Maybe dumb question) TwoPort VENUE Live Sound Systems 5 12-21-2007 02:41 PM
General Midi Question and another stupid question... imcivor 003, Mbox 2, Digi 002, original Mbox, Digi 001 (Mac) 3 09-04-2007 02:39 PM


All times are GMT -7. The time now is 09:45 PM.


Powered by: vBulletin, Copyright ©2000 - 2008, Jelsoft Enterprises Limited. Forum Hosted By: URLJet.com