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Old 16th November 2012, 06:04 AM   #1
nareshn is offline nareshn  India
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Default A low cost DIY chip based active filter + Amp circuit needed

DIY :
1. "Active" filter for two way speaker . Bookshelf only
2. A 10 to 15W "amp" to drive the two ways speakers; prefer chip based to start with.
3.Both the active filter and amp will be mounted together.
Can anyone suggest a suitable DIY design.There are many links shown in this fourm but its not that easy to ship modules/components to India.
Hence prefer a commonly available component design.
Thank you.
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Old 16th November 2012, 06:27 AM   #2
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and construct the active crossover and an amp of your choice but beware not to blow your small power rated speakers if at all. Select some TDA power amp chip. TDA 2030

The tweeter amp needs to be of double the power than the driver.

Gajanan Phadte
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Old 16th November 2012, 06:44 AM   #3
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There's a past number/issue of the Costruire Hi-fi magazine
sommario chf 155
which you may get in a downloadable/viewable format through the net
http://chf.myblupress.it/
It's mainly a Fast ( subwoofer+ full range) , the sub being a little 13 cm in a
double reflex enclosure, the same holding the 8 cm fullrange inside, both powered
by TDA 2050 and OPA2134 ( ??) for L/R crossover at about 160 Hz.
Both drivers are also italian, so...
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Old 19th November 2012, 11:58 AM   #4
nareshn is offline nareshn  India
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Thank you for the reply and guidance.
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Old 14th October 2013, 03:23 AM   #5
nareshn is offline nareshn  India
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Join Date: Nov 2005
The sites referred to have the details .Is there a company which offer a complete stereo 2.0 kit .
1.Passive or active pre amp with remote
2.Active filter for hi and mid/low
3.A chip based power amp
4.Loudspeaker driver
5.Building instructions

Any guidance is appreciated .
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Old 3rd February 2014, 02:57 AM   #6
nareshn is offline nareshn  India
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Audio Amplifier, 30W w/ 2-Way Active Crossover [XAMP-M2] Audio Amplifier, 50W, Mono, 2-Way Active Crossover [XAMP-M2] : Xkitz Electronics, Electronic Kits, Fun Educational Electronic Projects this is closest i could get to for a mini active crossover + amp .
Request team members to point me to a mini bookshelf design.
Dimensions : not more than 10in in ht ; 5in width ; 5 inch width
Which drivers for hi and low : any India drivers (wavecore,pereless...or equivalent ).
Thanks in advance.
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