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Topic: Audio crossover

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	Audio crossover - Wikipedia, the free encyclopedia
		Audio crossovers are a class of electronic filters designed specifically for use in audio applications, especially hi-fi.
		An ideal audio crossover would split the incoming audio signal into separate bands that do not overlap at all, and which when added together would give the signal unchanged in both frequency and phase response.
		The most commonly used active device is an op-amp and active crossovers are operated at the levels meant to drive amplifiers in contrast to passive crossovers which operate at the high-levels meant for speakers.
	en.wikipedia.org /wiki/Audio_crossover (2131 words)

	Why you can't do without a car audio crossover. - anther great tip from Electronic Shop
		A crossover is a filtering device which limits the frequencies that reach a speaker.
		But for your car stereo system to perform better and be efficient, you need an active crossover, also referred to as an electronic crossover.
		You can vary the crossover points and adjust the level of separate speakers to achieve the best overall sound in your vehicle.
	www.advancingwomen.com /electronicshop/electronictips/Why-you-cant-do-without-a-car-audio-crossover.php (400 words)

	Crossover - Wikipedia, the free encyclopedia
		Ethernet crossover cable, Ethernet cable in which the transmit and receive pairs are wapped at one end
		Crossover (genetic algorithm), genetic operator used to vary the programming of a chromosome from one generation to the next
		Crossover (music), music that has commercial success in a genre other than that for which it was aimed
	en.wikipedia.org /wiki/Crossover (244 words)

	Audio Allies Definition for: Crossover
		A crossover is necessary in a speaker because one driver cannot efficiently handle all sound reproduction tasks across the entire audible spectrum (the sounds distinguishable by the human ear - from around 20 Hz to 20 kHz).
		A two-way crossover, for instance, may split the frequency spectrum into a frequency band from 20 Hz to 2 kHz and from 2kHz to 20 kHz.
		Active crossovers are adjustable and require power (normally an AC power source from a wall outlet) to operate while passive crossovers are not adjustable (by the user, the factory can set the crossover but cannot change the setting without changing the crossover) and do not require power to operate.
	www.audioallies.com /GetFeatureDesc.asp?Feature=Crossover (199 words)

	Sample 3 Way Crossover (Site not responding. Last check: )
		The problem with 1st order crossovers is that the frequency overlap in the drivers would have to always be at least 2 octaves (or more) in each direction from the crossover point.
		The Crossover Calculator was used to determine the crossover components.
		That is why the values in the crossover tables for 1st, 2nd, 3rd order Butterworth crossovers have slightly different values than what the Crossover Calculator produces.
	www.lalena.com /audio/faq/xover (1756 words)

	Car Audio Crossovers, Equalizers, and Signal Processors
		The function of equalizers, crossovers, and other signal processors is to electronically change the music signal in some way to make it more usable.
		The crossover's purpose is to divide the music signal by frequency and send these frequencies to components "downstream" of the crossover.
		For example, in a system with a two-way component set and a subwoofer the crossover would send the low frequencies to the subwoofer's amplifier and the high frequencies to the component speaker amplifier(s).
	www.caraudiohelp.com /car_audio_signal_processors/car_audio_signal_processors.htm (1061 words)

	Active Crossover Kit for DIY Speaker Builders
		Crossover design is one of the most important aspects of a good loudspeaker design (IMHO disclaimer now: note again that many of the ideas presented here come from others...
		However, inside your passive crossover are some giant resistors (etc) to attenuate your midrange relative to your woofer, not to mention the giant inductors in your woofer cross.
		When implementing high-order crosses, I propose that active crossovers are much more ideal - i.e., it is easier to be assured that you are actually achieving the function you desire when you use tight-tolerant components which operate into a constant load.
	www.snippets.org /filters/crossover.htm (6600 words)

	Problem with Profile crossover - Club Polk
		My brother loaned me his older (to the tune of a few years) California crossover and it works fine with the line level input or the preamp in.
		The only difference between the two crossovers (other than age) that I can see is the fact that his has a plastic vs my metal cover, and mine has a rmt lead and his does not.
		Since we're using speaker level inputs, my brother thought that maybe the crossover wasn't stepping the signal down enough and the amp didn't like the signal coming into it, but I just don't know.
	www.polkaudio.com /forums/showthread.php?t=6128 (445 words)

	Home Audio Inc.
		One reason is the Home Audio and Borberly uses Sallen Key filters, where the Marchand XM9 uses bi-quad filters.
		This crossover is flexible, so either you or I can change your crossover point ect..., by unplugging several resistors and plugging new ones into the breadboards.
		Technical support is provide for these crossovers, but extra DIY tweaking might require you to put on your thinking cap and do the research at Audio Asylum ect.
	groups.msn.com /HomeAudioInc/activecrossoversandpowersupply.msnw (1623 words)

	Electronic Crossover - Lansing Heritage Forums
		There are the JBL crossovers using cards: people seem to have good things to say about them, but I'm not sure of the card supply.
		I see this as an option I could employ further down the line, simply because of the complexity it adds to the project even though the result may be a simplification of the whole system--a good goal to keep in mind.
		Anyway, use a decent variable active filter to dial in your crossover frequencies and then substitute in the passive line level equivalents when done.
	www.audioheritage.org /vbulletin/showthread.php?t=880 (1623 words)

	Ariel Page
		Going to a 3-way by adding another crossover at 200 to 300Hz is just asking for trouble in terms of large, expensive caps and inductors, as well as difficult problems with phase shift at frequencies where it is much more audible than the 3.8 kHz of the mid-tweeter crossover.
		I didn't need too much additional persuasion to increase the rolloff rate on the tweeter; the one-cap crossover also required the tweeter to be connected in reverse-phase in order to match the midbass units (which have their voice coils about 1.5" behind the tweeter.) I'm not too fond of drivers wired in reverse phase...
		There are three adjustable portions of the crossover: the discrete resistor L-Pad (R1, R2) for the tweeter, the tapped inductor (L5) for the midbass, and the resistor in series with the capacitor in the midbass circuit (R6).
	ai.kaist.ac.kr /~suh/DIY/lynno.htm (12185 words)

	component set, one crossover - Car Audio Forum - CarAudio.com
		The crossover points would then all shift and the tweeters would be ruined and the whole thing will sound like doodie.
		2 crossover, 2 tweeters, and 2 woofers hooked up in the rear deck (i had 2 sets of components, front and bak) but someone broke into my car, stole my lovely clarion HU lol, my sub, amp, and one crossover from the bak.
		Where you use powered crossovers that you manually (actively) set crossover points rather than a passive crossover where the points are already set.
	www.caraudio.com /forum/showthread.php?p=2358291 (611 words)

	Passive Crossovers
		Band-pass crossovers utilize a 2nd order, 12 dB per octave slope for clean reproduction of the passing frequencies.
		The Tri-Mode crossover passes the low frequencies to the subwoofer and the mid range and high frequencies to a stereo pair of speakers.
		Electrolytics: Often a crossover with the needed crossover point or slope cannot be found.
	www.pac-audio.com /products/passivecrossover.htm (888 words)

	Ashly XR1001 Active Crossover - Lansing Heritage Forums
		The crossovers that I compared it to were an old Audioarts unit and a Rane AC22.
		The ability to shape the curve(s) in the area of the crossover (without altering the overall slopes) is very powerful for fine tuning between cabinets and for the ambient acoustics.
		The companies name is DUO Audio, and its Daves new company, and he is a forum member as well.
	www.audioheritage.org /vbulletin/showthread.php?t=2316 (2062 words)

	ARC AUDIO Processors
		Whether it be the simple elegance of the MX1, the MX3 with its Bass Boost remote, or the innovative new IDX with the option of mounting it close to the drivers seat.
		The result is the channel tracking and frequency control of a fully digital crossover without the harsh mechanical sound that can accrue.
		This truly Audiophile Crossover is coupled with a 5 Band Parametric Preamp EQ with fully balanced output and a Digital Control.
	www.arcaudio.com /arc-05/processors.htm (382 words)

	Active Crossover - Club Polk
		I need the crossover to have 3 RCA inputs so as my DAC/Time Alignment will work to its best.
		The problem with Audio Control is i am in the UK and no one imports them here so the modules are hard to come across.
		Well there is one on E-bay in Germany but he is selling it with loads of other stuff and wont split.
	www.polkaudio.com /forums/showthread.php?t=8534 (476 words)

	W-Body Car Audio: Active Crossover (Site not responding. Last check: )
		If you are unfamiliar with crossovers, please read Crossover Basics.
		Active crossovers are inserted between your head unit and your amplifiers.
		An active crossover is called active because it needs it's own power supply.
	incolor.inetnebr.com /weisinator/car-audio-basics/active_crossover.htm (113 words)

	Amazon.com: STAR TREK NEXT GENERATION CROSSOVER (Star Trek: The Next Generation): Books: Michael Jan Friedman,Jonathan ... (Site not responding. Last check: )
		Crossover is definitely one of Michael Jan Friedman's best Trek stories.
		Given that he is the most prolific of the many Trek authors, he has attained a level in writing these stories that is both fluid and highly intriguing.
		The abridged audio tape version, read by Jonathan Frakes is exceptional and well appreciated as it helps three hours go by quite quickly on the highway.
	www.amazon.com /STAR-TREK-GENERATION-CROSSOVER-Star/dp/0671536281 (1998 words)

	CLASSICAL MUSIC ARCHIVES: MP3 - Crossover Files
		[Free audio] Prelude and Fugue in C, BWV846 [3:57 · 3.6M] (M.Ó Caoindealbhain).
		[Free audio] (*) Prelude in C-, arrangement for a whistler...
		[Free audio] Canon in D [4:53 · 4.5M] (D.Sindel).
	www.classicalarchives.com /mp3_x.html (1033 words)

	Circuit engineering - Variable Frequency Active Audio Crossover
		I am building a preamp for bass-guitar and I am having a hard time finding documentation on how to make a variable frequency crossover circuit.
		The crossover is to split the output signal into a High band and a Low band to send to 2 different channels of a power amp.
		This will allow me to "Bi-AMP" the system using a speaker cabinet dedicated to the low frequencies and another for the high freqs.
	www.eng-tips.com /viewthread.cfm?qid=42285&page=45 (371 words)

	W-Body Car Audio: Crossover Basics
		The crossover comes in two flavors: Active and Passive.
		Just like the Dolby Noise Reduction on your cassette deck cannot remove all the noise from your tape collection, a crossover cannot remove all of the unwanted frequency range.
		The crossover point is usually referenced by the point at -3dB.
	incolor.inetnebr.com /weisinator/car-audio-basics/crossover_basics.htm (194 words)

	[DIY] ? about car audio crossover
		I was working on a sub project and wanted to test said sub in the shop vs dragging it inside to the AV room.
		I did have several crossovers for car audio still sitting in boxes.
		Plugged in the audio control, and it gave the same response.
	www.snippets.org /pipermail/diyspeakers.not/2002-August/003058.html (208 words)

	Excite España - Búsqueda De Noticias - Resultados con: Car Audio Crossover
		The entry-level, compact Compass is a car-based crossover that shares its platform and drivetrains with the Dodge Caliber and its sibling, the Jeep Patriot.
		The CX-7 is a new five-passenger, mid-size crossover vehicle defined by its steeply raked (66-degree incline) front glass, curvaceous exterior and sport-tuned drivetrain and suspension.
		Another new model for Saturn, the Outlook is a large crossover wagon that can seat up to eight passengers and may be ordered with either standard front-wheel-drive or an optionally available all-wheel-drive system.
	www.excite.es /search/news?q=Car+Audio+Crossover (397 words)

	Axiom Audio: Crossover point in m22ti?
		The crossover to the tweeter is at 2.7KHz.
		He has replaced components in the M3ti crossover if I am not mistaken.
		You might also want to try the parts express forum or the madisound forum Both are great places for this type of stuff.
	www.axiomaudio.com /boards/showflat.php?Number=70497 (483 words)

	Car Audio Crossover Equalizer (Site not responding. Last check: )
		Consumer electronics and audio video search engine of product reviews and buying guides on everything hifi from portable mp3 players to home theater dvd systems...
		The crossover's purpose is to divide the music signal...
		A crossover is any device that limits the range of frequencies sent to a speaker or amplifier.
	www.wirekits.com /category/Car-Audio-Crossover-Equalizer.html (427 words)

	JL Audio XR crossover information for SQComp - SoundDomain.com Forum
		If you want to tweak a crossover for a kick-panel or for some other specific mounting condition, be my guest but swapping networks willy-nilly from one system to another is not something I can recommend.
		The crossover networks are attractively presented in a smoked acrylic case that complements any installation." sigh These crossovers are made to do exactly what they say they'll do.
		We use Bennic Mylars on the VR component crossovers, not on the XR component crossovers.
	forum.sounddomain.com /ubb/Forum4/HTML/006626.html (6772 words)

	Ashly Canada Audio Crossovers Wholesale: Erikson Audio
		The Protea 3.24CL was developed for smaller audio systems requiring fewer inputs and outputs without sacrificing sonic quality.
		Each output permits you to set your crossover frequencies and may be assigned to any one or a combination of inputs.
		Ashly Audio and Erikson Audio are pleased to announce that they have inked a new exclusive Canadian distribution agreement.
	www.eriksonaudio.com /products/ashly/index.html (708 words)

	DXS Digital Car Audio Crossover
		AudioControl has long been known as a designer and manufacturer of the highest quality, best sounding car audio electronic crossovers. Many have won industry awards and are used in some of the best sounding systems on the sound-off circuit.
		The DXS takes AudioControl’s years of car audio crossover experience and combines it with digital signal processing technology.
		This digital car audio crossover is a two channel three-way component that uses a 24 dB/octave Linkwitz-Riley alignment for maximum sound quality.
	www.mobileaudiocontrol.com /product.asp?Product_Id=14158&d_Id=8138&l1=8138&l2= (199 words)

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