A test team :)
Each resistor has a tolerance marked on it, and they should be within that tolerance. See https://www.arrow.com/en/research-and-ev... for how to read the tolerance value, and what color indicates which tolerance.
Chachara: Correct. Cut a length from the heaviest gauge wire and strip the insulation off.
Zhud - Please see photo 2 in step 1 for the component BOM.
Thanks for the feedback Evan! We’ll make a video to demonstrate for other builders. Appreciate you taking the time to post this.
Mike: The ACA was sold in 4 versions - black/silver and a choice of front power switch hole and no front power switch hole. If you didn’t receive what you ordered, please contact support at firstname.lastname@example.org. For your chassis, please see the step titled “Panel for "No front power switch" build” and also review the wiring diagrams which show how to wire your chassis (which doesn’t have a front power switch hole) together.
CitizenKane - Thank you, this is a good comment, and I will update the step with more information about this phenomenon. Almost certainly your resistors are not out by 150%, and you are experiencing the limitations of your measuring equipment. Don’t worry, you aren’t the first person to experience this. What other customers have found is that due to the very low resistance value of these power resistors, your testing equipment is giving inaccurate results. Likely you have started to measure the resistance of your testing leads. A customer using a Fluke meter was able to get accurate results by using thicker DIY test leads instead of the ones he was previously using.
Astromo - Thanks for pointing that out.
Thanks for your suggestions. Eye protection is a great idea, we’ll add that. Please see our solder information page for details about fume extractors and leaded solder safety. We’ll try to make this information more visible in the guide.
Another way to mount the LED in this chassis is to use two layers of heatshrink on the body of the LED. The following post shows the use of Ø4.5mm heatshrink (Ø5.0 would be good too!) to create a nice soft press-fit collar for your LED: http://www.diyaudio.com/forums/pass-labs...