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#1
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Headphone Mix hum
So I have a Hackintosh with a gigabyte board - my onboard audio is disable via - bios/UEFI and I'm just using my Saffire mix control software to be my primary audio device
So I have 5 headphone mixes that have a hum in them like a grounding issue and I have since found out that it is resulted to the buffer size in the playback engine !!! The lower the buffer the louder and more noticeable the hum and conversely the higher the less noticeable Now that I am writing this post I remember that the GA-X79-UD5 board has a via chipset- I will have to get my TI add in card for FW and try it like that Anybody have any experiences like that with the buffer settings ? Thanks
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Daniel HDX - PT12.5.1 - HD I/O 16x8x8 Win10-Pro (v1709)- 6 Core i7-6850k - ASUS X99 Deluxe ii D-Command Main Unit - 'Ole Blue http://www.sknoteaudio.com/ plugins rock and are affordable. |
#2
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Re: Headphone Mix hum
Weird, to say the least. I have always used the onboard audio to feed all non-PT sounds out of my rig. I use a Presonus Central Station and feed the mobo's optical SPDIF to the CS and simply push a button to hear outside of Pro Tools. It might be worth checking to see if your hum changed if you routed ONLY PT to the Saffire. Assuming balanced cables from the Saffire to your headphone amp, you could also try lifting pin #1(xlr) or the sleeve(TRS) at the connectors going into the headphone amp). That would solve a ground loop, IF that was the problem. Is everything plugged into the same AC source? If the headphone amp is screwed to rack rails, have you tried floating it(so the case is not grounded to the rails). Also, if the headphone amp has a grounded AC plug, try an AC "cheater" to see if that affects the hum(if it does, then you do have a ground loop).
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HP Z4 workstation, Mbox Studio https://www.facebook.com/search/top/...0sound%20works The better I drink, the more I mix BTW, my name is Dave, but most people call me.........................Dave |
#3
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Re: Headphone Mix hum
Interesting. I think swapping cards is a good idea.
Allbee was the one that finally convinced me to use the onboard sound and a cable into the interface. It was better then MME Helper (anyone remember that. I rarely need more than the two headphone outs on the 003, When I do I use the ADAT optical out to feed a Alesis Ai3 which converts the ADAT into 8 analog outs to feed the headphone amp. I do remember thinking that using an optical connection had the potential to reduce ground noise. Before I had the Ai3 I never had any issues with ground loops when going out analog.
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Scott Formerly Hobo Wan Kenobi Core 2 Specs Page ASUS P6T6 Revolution | i7 930 | 12GB OCZ DDR3 1600 7-7-7-20 | PTLE 10 | CPTK | 003 | Presonus D8 | 11Rack | Alesis AI3 | Presonus HP60 | Mercury + Studio Classics | Sound Toys | MasseyPack | Axiom61 | MAudio Keystation Pro 88 |
#4
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Headphone Mix hum
I will have to look into little bit more - good ideas
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Daniel HDX - PT12.5.1 - HD I/O 16x8x8 Win10-Pro (v1709)- 6 Core i7-6850k - ASUS X99 Deluxe ii D-Command Main Unit - 'Ole Blue http://www.sknoteaudio.com/ plugins rock and are affordable. |
#5
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Headphone Mix hum
The TI FW card didn't help - think its how I'm running my 3rd party low latency monitoring software and corresponding inputs
I have gotten it to go away for now - by changing the routing
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Daniel HDX - PT12.5.1 - HD I/O 16x8x8 Win10-Pro (v1709)- 6 Core i7-6850k - ASUS X99 Deluxe ii D-Command Main Unit - 'Ole Blue http://www.sknoteaudio.com/ plugins rock and are affordable. |
#6
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Re: Headphone Mix hum
Good to know that it wasnt the FW card or chip.
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Scott Formerly Hobo Wan Kenobi Core 2 Specs Page ASUS P6T6 Revolution | i7 930 | 12GB OCZ DDR3 1600 7-7-7-20 | PTLE 10 | CPTK | 003 | Presonus D8 | 11Rack | Alesis AI3 | Presonus HP60 | Mercury + Studio Classics | Sound Toys | MasseyPack | Axiom61 | MAudio Keystation Pro 88 |
#7
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Re: Headphone Mix hum
I would take a ground lift plug and put it on your computer first and test it, then your interface, then your headphone amp. This would at least give you a good idea if their is legit grounding issues.
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pro-tools-pc.com TRASHER Pro Tools Utility(updated 4-11-2024) HD Native, Avid 16x16, Eleven Rack, Focusrite Clarett 8preX, UA Quad Apollo TB. Intel I7 9900k Win 10 |
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