Danny O Flannagin Posted May 16, 2014 Share Posted May 16, 2014 So i just had a job interview at a local sound rental/events company and the boss liked me so she said i'll probably come in for a test to set up a basic sound system. I'm not worried about it but she did say another guy blew up the speakers. How did he do that? Anything I should look out for when i set it up? Did he just have the gain way too high? Basically, i just want to know what NOT to do when i set it up. She did say she would give me all the necessary equipment Link to comment Share on other sites More sharing options...
calx Posted May 16, 2014 Share Posted May 16, 2014 Turn it up as loud as possible, if it starts making funny noises hit it with a hammer. Link to comment Share on other sites More sharing options...
BobDobalina Posted May 16, 2014 Share Posted May 16, 2014 Yep, keep the gain in check. Basically if the amp sends more wattage to the speakers than they're capable of handling, they're liable to blow up. Link to comment Share on other sites More sharing options...
BCM Posted May 16, 2014 Share Posted May 16, 2014 give everything a good wash before you start Link to comment Share on other sites More sharing options...
Danny O Flannagin Posted May 16, 2014 Author Share Posted May 16, 2014 Yep, keep the gain in check. Basically if the amp sends more wattage to the speakers than they're capable of handling, they're liable to blow up. And if nothing's clipping I'm pretty much good? Link to comment Share on other sites More sharing options...
Audioblysk Posted May 16, 2014 Share Posted May 16, 2014 High gain microphone hooked up to mixer with the level's up to '11' slap with bell end call it ambient music Link to comment Share on other sites More sharing options...
Guest Wall Bird Posted May 16, 2014 Share Posted May 16, 2014 You may want to learn about ohmage if you're going to be matching speaker cabinets to amps. You're at risk of destroying an amp if you use it with a speaker cabinet with a higher ohmage. Presumably the systems you'll be renting out in most cases already have speakers paired to an amp, but if you have to suggest a custom setup to a customer you risk giving them a bad combination. For example: You should know if it's okay to plug a 4 ohm amplifier into a 2 ohm cabinet (it isn't) or whether you can plug an 4 ohm amplifier into an 8 ohm cabinet (acceptable, but may diminish the potential for maximum wattage). Link to comment Share on other sites More sharing options...
Danny O Flannagin Posted May 16, 2014 Author Share Posted May 16, 2014 You may want to learn about ohmage if you're going to be matching speaker cabinets to amps. You're at risk of destroying an amp if you use it with a speaker cabinet with a higher ohmage. Presumably the systems you'll be renting out in most cases already have speakers paired to an amp, but if you have to suggest a custom setup to a customer you risk giving them a bad combination. For example: You should know if it's okay to plug a 4 ohm amplifier into a 2 ohm cabinet (it isn't) or whether you can plug an 4 ohm amplifier into an 8 ohm cabinet (acceptable, but may diminish the potential for maximum wattage). Okay that makes sense. But if she gave that other guy the correct amp and necessary materials to set everything up, how could he have fucked up that badly? Link to comment Share on other sites More sharing options...
calx Posted May 16, 2014 Share Posted May 16, 2014 You may want to learn about ohmage if you're going to be matching speaker cabinets to amps. You're at risk of destroying an amp if you use it with a speaker cabinet with a higher ohmage. Presumably the systems you'll be renting out in most cases already have speakers paired to an amp, but if you have to suggest a custom setup to a customer you risk giving them a bad combination. For example: You should know if it's okay to plug a 4 ohm amplifier into a 2 ohm cabinet (it isn't) or whether you can plug an 4 ohm amplifier into an 8 ohm cabinet (acceptable, but may diminish the potential for maximum wattage). Okay that makes sense. But if she gave that other guy the correct amp and necessary materials to set everything up, how could he have fucked up that badly? He never had a hammer. Link to comment Share on other sites More sharing options...
Danny O Flannagin Posted May 17, 2014 Author Share Posted May 17, 2014 You may want to learn about ohmage if you're going to be matching speaker cabinets to amps. You're at risk of destroying an amp if you use it with a speaker cabinet with a higher ohmage. Presumably the systems you'll be renting out in most cases already have speakers paired to an amp, but if you have to suggest a custom setup to a customer you risk giving them a bad combination. For example: You should know if it's okay to plug a 4 ohm amplifier into a 2 ohm cabinet (it isn't) or whether you can plug an 4 ohm amplifier into an 8 ohm cabinet (acceptable, but may diminish the potential for maximum wattage). Okay that makes sense. But if she gave that other guy the correct amp and necessary materials to set everything up, how could he have fucked up that badly? He never had a hammer. Lol Link to comment Share on other sites More sharing options...
spratters Posted May 17, 2014 Share Posted May 17, 2014 What's to say she gave the other guy the right matchings? Maybe read up beforehand and check before you go setting it up. Link to comment Share on other sites More sharing options...
zkreso Posted May 17, 2014 Share Posted May 17, 2014 Maybe it wasn't a good idea to accept a job setting up speakers if you don't know how to do it. Link to comment Share on other sites More sharing options...
Danny O Flannagin Posted May 17, 2014 Author Share Posted May 17, 2014 Maybe it wasn't a good idea to accept a job setting up speakers if you don't know how to do it. fake it till you make it Link to comment Share on other sites More sharing options...
user Posted May 18, 2014 Share Posted May 18, 2014 Make sure all faders and volume controls are turned way down before switching everything on and off again. Link to comment Share on other sites More sharing options...
Braintree Posted May 18, 2014 Share Posted May 18, 2014 A few key things to consider: 1. Speakers 2. Mixer 3. Sound Source Make sure your speakers are on, but not turned all the way up. Depending on the speakers, they may have a volume attenuator (ie, volume knob) on the back. Make sure your mixer is on, the main mix is set to 0dB (unity gain), but your faders are all the way down and muted. When testing your sound source, make sure it's plugged in and it's something consistent, like someone talking into a mic or music playing. One good technique is to leave your channel muted, but turn up the gain slowly, and watch for the green light to flicker (the light that lets you know that sound is coming to the channel). When you see it consistently flicker, unmute the channel and slowly raise the fader. If you still don't hear anything, check your signal path. Link to comment Share on other sites More sharing options...
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