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Active crossover with RCA connections update


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Posted

The older post I have read so far have lead me to believe that home type crossovers are not common with RCA connectors.They seem to use balanced type connectors and I also read that the adaptors don't work so well.Dom was dealing with this issue in some old post.I would like to set up a bi-amp system but would like to avoid adaptors and have standard RCA connections.Any one know of any good stereo 2way crossovers with RCA connections?

Posted
 
If you go there, scroll down to the crossover section. There are several types available. These are kits however. You have to buy the parts and assemble them yourself. 
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Posted
 
Its a fully electronic crossover that you can use to split each L/R signal into 2 outputs, one for your highs, one for your lows...
 
If you spend a bit more on the UMIK USB Mic, you can then incorporate REW (a free EQ graphing program) to get your room response and generate a correction curve... which can then in turn be loaded into your MiniDSP to provide a better EQ curve..
 
 
You could also use this to go fully active, meaning removing the crossover from your speakers entirely like Gary (TNRabbit) did in his thread "I'm Going Active"
 
Pretty cool device... Couple posts around about it.  I'm just using one to EQ my new sub since my existing receiver doesn't have EQ capable of flattening out my sub response.
 
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Posted
If you are adding a subwoofer to a full range speaker an Audio Control Richter Scale is a good choice.
They come up on ebay pretty regularly for $80-150 (original model) and $160-250 (Series III).
 
The original offers 2 XO frequencies (100Hz or 600Hz), a 1/2 octave EQ and warble tone generator.
(You'll need the original condensor mike, or equivalent, to take advantage of the built-in analyzer.) 
20130218162417394.jpg 
20130218162559919.jpg 
 
The Series III can be adjusted for any XO frequency using readily available plugin resistor modules.
The unit I bought in the 70's came with 80 and 120Hz chips and a postcard you could send in to get a 3rd chip free.
Most of the units I see on ebay don't mention the 2nd module but often it's taped to the PCB inside. 
(Again you'll need the original condensor mike, or equivalent, to take advantage of the built-in analyzer.) 
 
20130218163400678.jpg 
20130218163428617.jpg 
 
This is a crossover module (it's just a simple resistor network on a 16 pin DIP), 
20120122112416957.jpg
 
and instructions for changing the crossover frequency:
20150219121848888.jpg 
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Posted

I would second the MiniDSP. That is what I am currently using and sounds much better than the ART CX311 it replaced. Unfortunately, I experienced issues with the ART due to the adapters needed to convert all the inputs/outputs to unbalanced. I found that the adapters contributed to an intermittent stray signal that maxed out my left upper channel which in turn slightly damaged my Magnepan speaker. Luckily, I know how to repair the Magnepan and is working fine now. Having been using the MiniDSP for several weeks now, all I can say is that I should have done it this way first and not go with the pro crossovers that you can easily find. Not having all those adapters I am sure didn't help with the sound quality. The MiniDSP is very easy to program and can easily be tailored to your speaker's needs. I have the ART currently up for sale which is only a year old. That tells you how much I like the MiniDSP so far.

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Posted

 

Pass Labs makes a nice one, sounds great, very flexible, and w/ both RCA and XLR.  Originally intended as industrial gear, though, so expensive.
 
Marchand XM44 is reported to be very good, but you buy them to spec--need to get the freqs and slopes figured out first (e.g. w/ something less expensive that's adjustable).  You can get modules for them to change the XO, though.
 
IIRC, the pro ones (which will be XLR) are 4th-order only, albeit w/ adjustable XO point.  Depending on the speakers, you might want something less steep to get the drivers to blend.
 
Seems like I just talked myself into the miniDSP (except I don't need another XO).

 

 

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Posted
Can someone explain what 2nd, or 3rd or 4th order means? I think it has to do with the frequency but I haven't found a good explaination of it.
 Thanks
 
BillWojo
Posted

 

 

Seems like I just talked myself into the miniDSP (except I don't need another XO).

 

 
Just remove the XO from your speakers and go active party.gif 
Posted
Just remove the XO from your speakers and go active party.gif 
 
Using the Pass now on Maggie 3a's, which are easy to biamp.  That's why I don't need to buy another crossover.  Sounds pretty good msp_thumbup.gif, wish I were home listening instead of sitting in a hotel room in Crawfordsville, IN waiting for 6" of snow--but that's another thread.

Posted
Just remove the XO from your speakers and go active party.gif 
 
Using the Pass now on Maggie 3a's, which are easy to biamp.  That's why I don't need to buy another crossover.  Sounds pretty good msp_thumbup.gif, wish I were home listening instead of sitting in a hotel room in Crawfordsville, IN waiting for 6" of snow--but that's another thread.

 
Dave, I agree with you, the Magnepan IIIas are very easy to biamp. Enjoying my IIIas with the MiniDSP. Sorry to hear where you are for business. I just came back from a three day business trip at Honolulu. Lot warmer there.
Posted
Just remove the XO from your speakers and go active party.gif
Using the Pass now on Maggie 3a's, which are easy to biamp. That's why I don't need to buy another crossover. Sounds pretty good msp_thumbup.gif, wish I were home listening instead of sitting in a hotel room in Crawfordsville, IN waiting for 6" of snow--but that's another thread.

Lol your down the road from me... Need to get out and shovel shortly...
Posted
 
Its a fully electronic crossover that you can use to split each L/R signal into 2 outputs, one for your highs, one for your lows...
 
If you spend a bit more on the UMIK USB Mic, you can then incorporate REW (a free EQ graphing program) to get your room response and generate a correction curve... which can then in turn be loaded into your MiniDSP to provide a better EQ curve..
 
 
You could also use this to go fully active, meaning removing the crossover from your speakers entirely like Gary (TNRabbit) did in his thread "I'm Going Active"
 
Pretty cool device... Couple posts around about it.  I'm just using one to EQ my new sub since my existing receiver doesn't have EQ capable of flattening out my sub response.
 

 

 
What would one use for 3-way spks. ?

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