Active Crossovers

Kingrex

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Feb 3, 2019
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I'm curious to try multi amping my speakers. I am looking for brands and models of active crossover that are high quality.

My thought would be to get a pair of 3 channel amps. I would use the amp in a verticle orientation. One amp to one speaker. Each channel powers the woofer, mid and tweeter.

I saw a guy at PAF making one for Magnepan. Forgot who he was. I'm sure there are others.

I want to start with active to have the adjustability to dial it all in.
Rex
 
I'm curious to try multi amping my speakers. I am looking for brands and models of active crossover that are high quality.

My thought would be to get a pair of 3 channel amps. I would use the amp in a verticle orientation. One amp to one speaker. Each channel powers the woofer, mid and tweeter.

I saw a guy at PAF making one for Magnepan. Forgot who he was. I'm sure there are others.

I want to start with active to have the adjustability to dial it all in.
Rex
I believe the company that was at PAF was Danville Signal. They use high quality active crossover's that employ AKM's.
 
I'm curious to try multi amping my speakers. I am looking for brands and models of active crossover that are high quality.

My thought would be to get a pair of 3 channel amps. I would use the amp in a verticle orientation. One amp to one speaker. Each channel powers the woofer, mid and tweeter.

I saw a guy at PAF making one for Magnepan. Forgot who he was. I'm sure there are others.

I want to start with active to have the adjustability to dial it all in.
Rex



Try these , good starting point i would recommend using one amp for bass , one for mids , one for Tweeter, If you are gonna tri-amp.

Personally i do prefer passive for mid> Twt and bi amp for bass >Mid ..!
 
Danville Signal looks interesting but they seem very oem oriented.
 
There's a guy named Richard Hollis who's active on AudioCircle. His company is called Hollis Audio Labs, and they specialize in "High End Music Servers and Custom DSP crossover services." I don't think he has a website, but he does have a Facebook page that can be viewed without an account. I know he collaborates with Danville Signal, and he'll be at CAF2024 in Room 702.
Here's a press release TAS published: https://www.theabsolutesound.com/ar...io-labs-to-deliver-digital-crossover-systems/
 
There's a guy named Richard Hollis who's active on AudioCircle. His company is called Hollis Audio Labs, and they specialize in "High End Music Servers and Custom DSP crossover services." I don't think he has a website, but he does have a Facebook page that can be viewed without an account. I know he collaborates with Danville Signal, and he'll be at CAF2024 in Room 702.
Here's a press release TAS published: https://www.theabsolutesound.com/ar...io-labs-to-deliver-digital-crossover-systems/
Looks nice. I don't know I would use orchard amps. I was looking at a Ayon thats 3 channel.
 


Try these , good starting point i would recommend using one amp for bass , one for mids , one for Tweeter, If you are gonna tri-amp.

Personally i do prefer passive for mid> Twt and bi amp for bass >Mid ..!
I would love my Blade amp to run the mid and high through the analog crossover and some other amp do the woofers. But that usually does not work. I tried it with my Audion 845 and it was a total disaster. It might work better with a active crossover in the mix. And a better amp for the woofers. Maybe a solid class A or AB. The Atmasphere class D is nice too.
Everyone tells me success ususally comes with the exaxt same amp to all drivers.
 
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I'm curious to try multi amping my speakers. I am looking for brands and models of active crossover that are high quality.

My thought would be to get a pair of 3 channel amps. I would use the amp in a verticle orientation. One amp to one speaker. Each channel powers the woofer, mid and tweeter.

I want to start with active to have the adjustability to dial it all in.
Trinnov Nova would nail it, I think. Two in and six out.
 
Pass labs XVR-1. Only if you can find used. Probably the most flexible analog x-over out there. Almost unlimited number of settings
 
dbx driverack ta2 is another option.
I have looked at some pro audio gear. Maybe. I doubt the quality is there. They would be good to dial the system in and know the settings to then get an active analog
 
Pass labs XVR-1. Only if you can find used. Probably the most flexible analog x-over out there. Almost unlimited number of settings
Only 2 channel out.
 
Am using the Sublime Acoustics K235 it's 3 way XO capable but am only using 2 way for my Silbatone & Diptyque Active Biamp/2 way.
I got it when they were first launched so i got it on the pre-order price but even at normal price it's quite decent. It's an analogue XO and you have to decide the XO point and slope am using 1600 hz, -12dB slope..
 
I'm curious to try multi amping my speakers. I am looking for brands and models of active crossover that are high quality.

My thought would be to get a pair of 3 channel amps. I would use the amp in a verticle orientation. One amp to one speaker. Each channel powers the woofer, mid and tweeter.

I saw a guy at PAF making one for Magnepan. Forgot who he was. I'm sure there are others.

I want to start with active to have the adjustability to dial it all in.
Rex
I have tried the following:
Accuphase F25 analog active crossover
Accuphase F15L analog active crossover
Behringer DCX2496 (great for crossover development due to speed of adjustment)
Bryston 10b analog active crossover
Mini-DSP nano-digi

For digital, the best sounding was clearly the Mini-DSP Nanodigi using the digital outputs to feed to high quality DACs (Monarchy Audio and Metrum)...this was essentially transparent and easy to adjust in a myriad of ways (including time alignment and equalization). The Behringer interferes with the sound in a negative way but is super easy to dial in a good crossover (using a Behringer DEQ2496 for measurement with it's pink noise/RTA), including time alignment and equalization (with the DEQ2496). I didn't have a good enough A/D to make analog a really viable solution but perhaps with a studio grade A/D converter you might get sonically tranparent analog...although it will now have the imprint of your DACs as well as the phonostage.

The Bryston was not sonically transparent and added an "electronic haze" on the sound...I got rid of it quickly.

The Accuphase F25 and F15 are pretty transparent but somewhat lacking in dynamics. Easy to use but not that easy to dial in as you need a separate card for each frequency you want to try. No equalizaiton possible to correct for less than perfect drivers. I would only recommend this if you have drivers that are very well behaved both in and out of band and don't require significant equalization.

The one I really want to try is a Marchand tube analog active crossover. This for me might be the best solution because I don't need frequency correction and analog xover works much better for analog...at least so far.
 

I have this unit but not in use.

I now use Accuphase F25 instead.

If you are interested in it, I can loan you.
Thanks Thomas. I think Zeev said that does not work with the coax.
 
I have tried the following:
Accuphase F25 analog active crossover
Accuphase F15L analog active crossover
Behringer DCX2496 (great for crossover development due to speed of adjustment)
Bryston 10b analog active crossover
Mini-DSP nano-digi

For digital, the best sounding was clearly the Mini-DSP Nanodigi using the digital outputs to feed to high quality DACs (Monarchy Audio and Metrum)...this was essentially transparent and easy to adjust in a myriad of ways (including time alignment and equalization).
For digital the Octo Research 8 channel might be the way to go?
 

I have this unit but not in use.

I now use Accuphase F25 instead.

If you are interested in it, I can loan you.
That unit is likely a 2nd order XO.
One either needs to try a bunch of filter types, or know what type that they want.
Or just get lucky.
 
I use a MiniDSP Flex Eight for my four way dipole system.
 

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