What is a crossover in a car stereo system?

speaker system wiki image

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I've been looking to upgrade my car stereo system for a while now, but have very little knowledge of whats required. Basically, I just want to add 4 new speakers, new wiring, and a new head unit now, and then over the next year or so add an amp and 1-2 12" subwoofers.

I've been looking on Craigslist for parts and see people selling Crossover's. What are these for? Would I need one for my setup? Thanks!

Answer
see this link


http://en.wikipedia.org/wiki/Audio_crossover

How would you wire a cable to convert XLR Out to 2 Wire Speakers from a Mixer?

Ramen Junk

I have a Mackie Mixer Board that has XLR Outs on it for the main out. I was wondering if there is a way to wire these directly to a pair of 2 wire speaker terminals or if I need some other piece of equipment in between them for this to work properly.

Answer
3-pin XLR connectors have long been the preferred choice of audio equipment manufacturers, most often in pro sound applications, whenever balanced (or AES3 digital) audio interconnections are desired for LINE-LEVEL audio signals. Depending on whether your loudspeakers are active or passive designs will dictate how you will be able to connect them to your audio equipment. For example you CANNOT directly connect passive loudspeakers (which appears to be what youâre using,) to a line-level audio output, such as the XLR outputs on your Mackie mixing console, nor can you connect the line-level input on an active loudspeaker to the high-level output on an audio power amplifier.

If you wish to connect a passive loudspeaker system to the 600⦠balanced (XLR) LINE OUT on your mixing console you will need an audio power amplifier with 600⦠balanced (XLR) line inputs (which are very common on pro sound audio power amplifiers,) in order to power your loudspeakers. However if the power amplifier you wish to use is equipped with unbalanced 1/4" (RCA phone-jack) line inputsâsans 600⦠balanced (XLR) line inputsâyou will need to use an impedance matching balun - assuming your Mackie mixing console lacks unbalanced 1/4" (phone-jack) line outputs.

For high performance pro sound and studio applications you will often see a variety of (line-level) digital loudspeaker management controllers/systems within the audio signal path between the mixing console and the audio power amplifiers that power your loudspeaker system. Such controllers are typically interconnected through XLR audio connectors - either 600⦠balanced analog audio or 110⦠(AES/EBU) AES3-compliant digital audio connections.

################## RESOURCES ##################

Balanced audio - Wikipedia
http://en.wikipedia.org/wiki/Balanced_audio
XLR connector - Wikipedia
http://en.wikipedia.org/wiki/XLR_connector

Audio Connectors
http://www.nullmodem.com/Audio.htm

Rane Reference Library
http://www.rane.com/library.html
Sound System Interconnection
http://www.rane.com/note110.html
[PDF] Sound System Interconnection
http://www.rane.com/pdf/ranenotes/Sound%20System%20Interconnection.pdf
Grounding and Shielding Audio Devices
http://www.rane.com/note151.html
[PDF] Grounding and Shielding Audio Devices
http://www.rane.com/pdf/ranenotes/Grounding%20and%20Shielding%20Audio%20Devices.pdf

Audio Engineering Society Sound Path Labs
[PDF] First Basic Audio Workshop 1992
http://www.drewdaniels.com/BINDER.pdf
 

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