Discuss Quantum Series Interfaces Here
5 posts
Page 1 of 1
It wasnt all that difficult to get the Quantum 2626 connected to my combination of a Gigabyte GC-Titan Ridge, on my MSI Z370-A Pro motherboard and After some reading up, I have the 2626 connected and working.
However, when I connect my bass or guitar to an instrument input and there's a device (Tuner Pedal, Gate pedal, input/power module, drive/pre-amp pedal, tube input from my GS3000 desk, anything I tried, so far) in between the instrument and the 2626 instrument input, I'm getting a severe hum, about the same volume as the sound of the instrument.
When I fiddle with the connector in the 2626's input, the hum starts stuttering and when I find the right position/angle for the connector, the hum drops. It's still there, as a constant noise floor, that is well over the standard noise floor, I'm usually having from the devices I tried (a drive pedal, of pre-amp with high gain gives a certain noise floor, of course) and is still not something you'd start recording with. This noise also sounds different. Its not the higher frequency sizzle/crackle, like we know from a distortion pedal, but its a thick, low-mid frequency hum.
You might think:"This sounds like a bad connection, loose wire in the connector, or a worn out connector on the input" and yes, thats what it sounds like. But the 2626 is brand new and I tried multiple cables (high quality cables with Neutrik connectors), cleaned the connectors with alcohol, measured and even re-soldered the connectors from the cables, but nothing made any difference at all.
Then I used the same cables to connect my Glockenklang BassArt pre-amp to one of the2626's line inputs and there was no noise at all! Again with the same cables, I tried my guitar direct into the 2626's instrument input and also here, no noise at all!
This leaves me to conclude that the noise must be a result from having a device in the signal chain in between the instrument and the 2626's Instr/Mic inputs.

Anyone here who experienced a similar issue and can shed some light on the matter?

Cheers!
Maarten
______________________________________________________
MB: Mac Pro 2019, 12-core, 48GB RAM
Software: Catalina 10.15.7, Studio One 5 Pro
I/O: Quantum 2626
User avatar
by elt97mjn on Wed Jul 29, 2020 11:54 am
I'd like to ask you a few questions.
Are you using batteries or an adapter for your pedals? It sounds like you have a groundloop problem or similar. And for an old and goldie have you tried turning your 240/120 connector 180 degrees in the socket, lift the earth in one of the connectors. Tried different wallpower outlets?
Best Regards
Mike
User avatar
by SwitchBack on Wed Jul 29, 2020 12:18 pm
Is that a mono or a stereo plug you’re using in the 2626? Remember that the jack socket is a stereo socket (allowing it to accept balanced line signals). If it isn’t a balanced signal you’re providing then make sure you use a mono plug :)
User avatar
by PAE Seth on Tue Aug 18, 2020 8:57 am
I would suspect Ground Loop issue.

Probably exceeding the 18 ft rule for unbalanced 1/4 in cable.

PC #1: Asus Prime Z690-P, i5-12600k 10-core (6+4), 32GB DDR4 3200 MHz, RTX 3060 12GB, ADATA XPG 512GB M.2 NVMe SSD, 2 x 1TB WD Black HDD

PC #2: ASUS X299 Prime Deluxe II, i7-7820X 8c/16t, 16GB 2666 MHz DDR4, GTX 1060 3GB, Samsung 970 EVO NVMe M.2 SSD (Win10 Pro), Samsung 860 EVO SATA SSD (Win11 Pro), OWC Aura 512GB NVMe M.2, 2 x 1TB HDD

Mac: 2010 Mac Pro 6 core 3.33 GHz, 32GB 1333 MHz DDR3, AMD RX 5500 XT 8GB, Alpine Ridge Thunderbolt 3 Card, Aquantia 10Gbps AVB card, Dual eSATA PCIe + Stardom 8xHDD Raid Tower
User avatar
by fatty1 on Tue Jan 11, 2022 3:24 pm
Same issue for me.
The inputs 1/2 mic/inst have noise sound when I plug my synth.
Also when nothing is connected in the inputs (1.2.3.4.5.6.7.8) when I select the quantum in live 11 from preferences a noise appears too.

I also tried multiple cable, brand new, old but good known etc I got the same issue.

Have you solved your issue ?

5 posts
Page 1 of 1

Who is online

Users browsing this forum: No registered users and 1 guest