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Has anyone built a diy active speaker system??? I want to build a pair of inexpensive active bookshelf speaker for my bedroom PC system. I just bought the Madisound Swifty drivers and I have all the parts to build a pair of LM3886 chipamps. The part that im worried about is the Xover ive never built an active xover before and Im not really even sure how?? There are a bunchg of computer programs that design passive Xovers, but are there any that will do active xovers?? How much more complicated is an active xover?? Any companies make a kit?? Id like to go with a three way xover so I can add a sub in the future. The Xover will be fed from my computers soundcard. Id like to keep the budget under $500. So that pretty much leaves me with around $200 to build the xover.
thanks
Follow Ups:
I built an active crossover from scratch for my homebrew speakers. There are some notes at the site below, which may or may not be appropriate to what you want to do.If you have any specific questions I would be happy to try to help.
Alex
you do use something like the Behringer, DEQ,
but WITH a measurement mike so as to get it right, after 'trying stuff'!Also do use drivers that 'could have worked together' - eg. available in a kit with designed and supplied passive xovers, box plans or flat pack. and look at the xover frequency's for those.
Note that applying standard analogue active xovers - to spkrs already OEM'd with high quality passive xovers, can NOT be guaranteed to give 'better' results, unless
a) you measure - and follow - the voltage transfer functions of the OEM passive xovers in the spkrs, and 'tweak' from there on, OR
b) get the Mfr's own 'active upgrade' slopes / advice - if they can be bothered? Which may NOT be the same as their OEM passives,
anyway / either!Think - about it.
WarmestTimbo in Oz
The Skyptical Mensurer and Audio ScroungerAnd gladly would he learn and gladly teach - Chaucer. ;-)!
'Still not saluting.'
You have a few choices. There are actually software based ones that will let the computer do the active crossover for you. Or you can buy a cheap pro audio one. Marchand offers a low cost solution in the XM9.You don't need a 3 way as all of them offer a summed mono low pass for subwoofer duty. A true 3 way doubles the coast.
I think you will be stunned by the results....at least I am.
Thanks for the info guys. I just learned that there is a plugin for Foobar that lets you use the 8 or 6 channels of a surround sound soundcard for an active Xover. I have a Creative Xfi 7.1 sound card so I could try this out and it wouldnt cost me a penny. Any other software solutions???
thanks
Frank
I'm all for DIY, but there are some pretty good and inexpensive pro gear solutions out there for active crossovers.The link below is to a Behringer for $130. Well within your budget.
- http://www.musiciansfriend.com/product/Behringer-SUPERX-PRO-CX2310-Crossover?sku=182466 (Open in New Window)
It'll take your digital input, and output the necessary analog for each driver, and has Room correction software built in... and can be bought with a very good measuring mike :D
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