Videomaker – Learn video production and editing, camera reviews › Forums › Technique › Sound › How much do XLR to 1/8-`inch adapters degrade sound? › Everything “in line” costs
Everything “in line” costs *something*. Most often, the cost is negligible. I think the easiest way to tell would be to run a multimeter on the adapter, with one lead on the tip of the 1/8th” adapter, and the other lead on the corresponding XLR pin. First, to find the corresponding tip-to-pin, set the multimeter to check for continuity. Then, and this is what you’re really testing here, check the impedance (ohms). You’re hoping for a low number – ie, less than “1”, like 0.35 (that’s an example, as I have no idea what kind of numbers you’ll actually see). Ok, now that you know the resistance (noise making capabilities) of the adapter, run the same test on the XLR cable, or better yet, other adapters you have. You should get a higher (possibly much higher) number from the cable, and relatively low numbers from other adapters. All adapters *cost* you (introduce) some resistance (ohms). If the adapter is reasonable, when compared to other adapters you have, then you can use your benchmark test to decide if it’s costing you too much resistance – or determine if it’s in line with other similar components. If you’re not getting noise in the final recording, odds are you don’t have a problem. Hope that helps!