I purchased a refurbished 13 inch Early 2015 MBA. The left speaker crackled when Siri spoke a particular phrase. It's not too severe but I feel there shouldn't be any crackling for a laptop of this price. It was sent back for repair and was returned with two new speakers but had the same problem. So I returned the refurb and ordered a new MBA of the same configuration, Intel i7 8 GB RAM, 512 GB SSD. I got the new one yesterday and it has the same problem. To duplicate the problem: Go into a quiet room, not an Apple store with several dozen people talking Go to "System Preferences", "Security & Privacy", "Privacy" and uncheck "Enable Location Services". Activate Siri (I click the Siri button in the menu bar.) After Siri prompts you, ask "What is the temperature?". In Siri's response, the following two sentences are where crackling is heard: In 'Security & Privacy Settings', choose the 'Privacy' tab. Under 'Location Services' check 'Enable Location Services' and 'Siri & Dictation'. Is anyone else experiencing this? I don't think I could be so unlucky as to get the only two MBAs with this problem. Maybe it's only with ones recently manufactured. With the refurb, I went through the troubleshooting process with the Apple online support. The PRAM was reset but didn't solve the problem. After swapping left and right speakers in the "Audio MIDI Setup", the problem stays with the same physical speaker. The problem doesn't exist when I listen using headphones so I'm certain it's a hardware issue. Also, my wife's iMac doesn't crackle when speaking the same phrase. If this has already been discussed in another thread, I apologize. I did a quick search but didn't find it discussed. Thanks.