Recent content by challenge

Ok so that should be it. Thank you very much for the troubleshooting.

I have another mdat on another driver, done the same day. The timing shift is exactly the same amount. yes the buffer is set to 1024, this is the max value for this focusrite 2i2 3rd edition! Does that means that the CPU was too slow to process the thing in real time and skipped some? I had an...

@John Mulcahy 50mb --link expired--

Hello. I have a question. Now, mind that these specific ones are measurements I did in october 2023. Forgot to ask at the time. Files says it was REW 5.20, I presume the one that was up to date at the time (V5.20.13?), so don't know if something changed after) I don't have the setup rigged right...

Marius (audiojudgement?) created the first image I used in the first post just to explain how i plugged things, as it was quicker to explain than writing a wall of text. We're not using his 4 switch box schematics here. the schematics in this thread are much cleaner, simpler and more accurate...

Thank you for the explanation. I like the idea of loading the amp as sound card calibration, will write it down and do it that way as it seems safe and easy enough. Ignore the second question, it all works fine after updating to the latest early access. Forgot to update it on windows as usually...

I get it now for crossovers. Even easier in single channel mode. Thank you for the settings, very useful. Ok don't laugh. It all started when I saw the general measurement setup on arta user manual (below) and that's why I got creative thinking of two probes :greengrin: I thought I could've...

I started to get the hang of it. Also tried measuring caps and inductors and it works fine. @dcibel i was thinking, while i have it all on desk... and since you all understand electrical circuits better than me... what if I wanted to use your box to also measure passive crossover outputs (to...

thank you for the schematic! yeah I've found multiple versions of that schematic via google with the resistor in different position and mixed/mashed a bit of it comparing to arta etc then saw that version (another guy) with 4 switches and got confused a bit on too many sides, so i posted here...

solved. now works perfectly, calibrates fully, zero noise, and difference between inputs when shorted is way bigger as it should. :T

Checked the wiring. All is as the schematics above. Following the cal instructions. When I do the second step (disconnect the speaker and short the wires), it tells me the ref input is not low enough and cannot move on the next step... The ref peak is -21,6dBFS, the meas peak is -23,5 dBFS. So...

ok i got it maybe? in the manual Rsense is always present in the box and the reference one is another resistor just for the third calibration step... :doh: I thought it was possible to calibrate somehow without another external resistor in this kind of jig, since it has the SPL/IMP switch...

FIXED: SEE POST #8 Hello. I built a dedicated box to measure both frequency response of loudspeakers and also impedance, I also do full dual channel FR measurements with amplifier. It's plugged like this when measuring speaker impedance with an amp: I found a nice discussion (cannot post...