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sourcing a cheap 2 way active crossover

Wharfedale EVO 4.1 4.2 Speakers

greenhorn

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Is there any source to get hold of a cheap (<1K) 2/3 way crossover circuit(built or kit)

I am planning to build a bi-amped FAST setup with a philips hiq driver & an ahuja 12" LF with active crossover (somewhere between 250 & 100Hz).

Most of the LPF/subwoofer circuits am seeing have no HPF, and the LPF is mono.

I am beginning to think its cheaper to breadboard a state variable filter
State Variable Filters

any alternatives I may have missed out :/
 

manoj.p

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You can use MiniDSP kits/products or Behringer DCX units.
 

efernand1

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Hi Greenhorn,

I remember in the old days, a philips crossover was available within 500 - 1000....ofcourse all this was at the electronics market ...Lamington road....now i am sure there would be a variety of crossovers of different brands available...

You may want to check online options......
 

saheb11123

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I have a spare pcb from my previous project. Its a 12db filter after rod elliots design but it has fixed xo point. Its really simple to make three opamps and some caps and resistors.
 

greenhorn

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thanks, that should do great. I'm still waiting for the woofers to come in stock. Will ping you once everything else falls in place.
 

saikatbiswas82

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KMTech from UK sells some quality stuffs IMHO. They are highly regarded in Diyaudio forum. Here's the link for 2 way 12db/octave x-over kit.

2 Channel 2 Way 12nu llOcta veActi veCrossov erFilt erKmte chNE55 32D IYK | eBay

They have some assembled kit/diy kit/pcb for 2/3 way 12db/24db per octave. I guess they have some NE5532/OPA2134 variants as well. Do visit their store.

I am not related to them anyway.

FM Sumanta is also using similar driver setup (in his beloved OB). You can check with him as well.
 

greenhorn

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I saw them, but I'm still at the prototype stage, and am not sure how to cross over. I had seen some boards similar to the KMtech boards on diyaudiocart for a tenth of the price- that would have been a good idea, and looking at something like that .

I would like to limit my upgrade budget, and spending 30% of it (currently = 2.3K for 400W PSU for T amp, 4.2K for ahuja drivers) on crossover board i could probably build myself - no thanks - I'd rather stick to a breadboard.
 

tnvijay

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In diy audio, there is a circuit and PCB layout for 2 way active crossover with variable freq. uses a single quad op AMP. search it mic,preamps and filters thread. The designer is mile slakovich, in the name of apex audio. I have not built this, but built another of his design with good results. I shall try to send you a link soon.
 

Sumanta

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Greenhorn,
I would suggest to use a 15" instead of 12" if you are crossing closer to 200 Hz.

Try to have around 6~7 dB SPL gap between Philips and Ahuja. which probably is the reason for you to with this driver.

I would suggest to get it from a vendor who in general are professional and courteous enough.
I have burnt my fingers, wasted more than six months in waiting to get a similar one (very similar) from someone from Kolkata I knew in this DIY field.

The active that I have now (a gift from a friend from Portblair, when he listened what I had been through while trusting someone to get such a xover from Kolkata) has opened up the whole system to a new level of precise, open, clearer sound that I could only imagine till now. I am enjoying my system much more.

Philips HiQ is little more mesmerizing for female vocals as T Anthony once said.

I wish Chennai is closer to Mumbai than it actually is.

Happy listening.
 
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