For upgrade a presently top class set-up with a subwoofer I still prefer a passive solution for the high pass.
The main advantage here is no additional OP-AMP line stages between the pre-amp and the power amp and thus no additional THD sources for the sensitive midrange-high frequency aera.
Only a resistor, an inductor and a capacitor is necessary between power amp output and speakers in most cases.
The main disadvantage is the fact, that is to do a new design for this passive high pass part in case of new speakers, in case of a new listening room or a new location for the main speakers.
Therefore I want to know a commercial crossover network, where is in use highest quality parts/Op-AMPs and the possibility of adjusting the slope character (CH-BU-BE, 18-24db/oct) and the cut-off frequency (aprox. 50-250Hz).
The good known Behringer devices are not really good. I want only analog crossover networks (Sallen-Key or MFB topology) and no DSP based verions, because additional ADC/DAC in highest quality are necessary.
Who can give me some advices - thank you very much.
The main advantage here is no additional OP-AMP line stages between the pre-amp and the power amp and thus no additional THD sources for the sensitive midrange-high frequency aera.
Only a resistor, an inductor and a capacitor is necessary between power amp output and speakers in most cases.
The main disadvantage is the fact, that is to do a new design for this passive high pass part in case of new speakers, in case of a new listening room or a new location for the main speakers.
Therefore I want to know a commercial crossover network, where is in use highest quality parts/Op-AMPs and the possibility of adjusting the slope character (CH-BU-BE, 18-24db/oct) and the cut-off frequency (aprox. 50-250Hz).
The good known Behringer devices are not really good. I want only analog crossover networks (Sallen-Key or MFB topology) and no DSP based verions, because additional ADC/DAC in highest quality are necessary.
Who can give me some advices - thank you very much.
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This project on my website meets most of your goals. You could add one of the 2nd-order high-pass filter modules from the pick-n-mix project if you wanted a steeper filter.
Read Research - Projects - Input Buffer & 2nd-order High Pass Filter
Read Research - Projects - Input Buffer & 2nd-order High Pass Filter
Thank you. Unfortunately you haven't missunderstand my question. I want to know commercial products for home hifi.
In the meantime I have found several examples, both commercial and diy solutions and by the commercial solutions both home-audio, car-hifi and several vintage (no longer manufactured) versions:
Overviews:
The Well-Tempered Computer
Untitled Document
Home-Audio, Studio
Passlabs XVR-1
Xvr1 image by zzxzzy on Photobucket
ftp://184-tar-2.acn.waw.pl/pub/Pass/XVR1MAN1.PDF
https://passlabs.com/products/preamplifiers/speciality/xvr-1
http://www.diyaudio.com/forums/pass-labs/2646-pass-labs-xvr1-crossover.html
Rane AC22s
AC 22S Active Crossover
http://www.rane.com/pdf/ac22sdat.pdf
Musical Technology active crossover
ACTIVE CROSSOVER – Welcome to audio-intl
Bryston 10B-STD
Bryston Limited: 10B-STD Electronic Crossover
AllegroSound * Bryston 10B Electronic Crossover *
http://vintage-audio-laser.com/photofo/hornman/filtres/bryston-10B-7.jpg
The Well-Tempered Computer
Naim Audio SNAXO
Audio Electronic Crossover Amp | Amplifier | Active Loudspeaker | Snaxo | Bi-amp | Tri-amp | Three way | Two way | Naim Audio
Marchand XM9/XM26
Marchand XM9 Active Crossover Network
XM26 Vacuum Tube Electronic Crossover Network
Ashly XR-1001
http://www.ashly.com/Resources/Images/Product/300dpi/xr1001-f.jpg
http://www.ashly.com/Resources/Documents/Spec Sheet/xr-series.pdf
XR Series Crossovers
Pyle Pro PPCX2/PYX3X
PylePro - PPCX2 - 2-Way Active Stereo Crossover with Separate Subwoofer Output
PylePro - PYX3X - 3-Way Active Stereo Crossover Network
dbx 223XS
Audio Pro | dbx 223XS
Car HiFi
Syrincs Subcontrol II
Herzlich Willkommen bei SYRINCS Audiotechnik und SYRINCS Brand of HERTZ
FRX-456 - Precision Power
http://www.mazdas247.com/members/chuyler1/FS/0522072238a.jpg
http://www.precisionpower.com/Manuals/Accessory Manuals/Precision Power FRX-456 Crossover.pdf
DIY
DIY tube crossover
Tube Active Crossover
"Active crossover and equalizer for full range speakers and woofers in open baffles"
post 1854 about
http://www.diyaudio.com/forums/pass-labs/4486-diy-progress-report-186.html
RSt-Audio AFW1
AFW1 / Active Crossover Network
AFW1 / Aktive Frequenzweiche
DACT
DIY active crossover
THEL
Aktiv-Module; Aktivmodul; Aktiv-Systeme; Grundlagen - Aufbau + Vorschläge
BMM electr. K1002LC
K1002LC - 2 way active 24dB Linkwitz-Riley crossover (KIT) - Europe Audio
Vintage/Legacy
Overview
Le forum de Vintage Audio Laser • Afficher le sujet - Les Filtres Actifs Vintage / Vintage Active Crossovers
Rane AC22
Sonido & Iluminacion: Crossover Rane AC22
http://tiggersound2.com/upload/imagesMember/2011/02/18/1774_1298009085.jpg
Alembic Club: Rane AC22 Active Crossover
Sony TA-D88B Active Electronic Crossover 2/3/4 Way
Sony TA-D88B Active Electronic Crossover 2/3/4 Way Speaker for Horn, Tube/SS Amp for sale
Accuphase
Active bi-amping and passive crossovers: why do you need to disconnect them?
Pioneer D23
http://cdn.head-fi.org/5/56/56f35ced_d-23.jpeg
Infinity Reference Standard active crossover.
http://www.infinity-classics.de/mod...B-1981-86/Reference-Standard-4.5/RS4.5-13.jpg
http://www.infinity-classics.de/mod...eference-Standard-4.5/active-crossover4.5.jpg
Wharfedale XO-206X 3-Way Stereo Active Crossover
Wharfedale XO-206X<br>3-Way Stereo Active Crossover
Calling All "Vintage" Integrated/Receiver Owners
Krell KRX-1/KBX-2
soundandmore.com ::
AllegroSound * Krell KRX-1 Electronic Crossover *
http://www.auduo-1.com/newgoods/K-L/KRELL/KBX/006.jpg
The first both (Passlabs XVR-1, Rane AC22s) meets most of my goals.
Attachments
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In this case this thread is also of interest:
http://www.diyaudio.com/forums/mult...i-amp-electronic-crossover-2.html#post3097613
http://www.diyaudio.com/forums/mult...i-amp-electronic-crossover-2.html#post3097613
I'm afraid that if you go with analog you are not going to be able to satisfy your requirements of variable corner frequency, order, and type of crossover. This is just too many variables to easily pull off in an analog active crossover.
If you can live with only variable frequency, then there are lots of pretty good options out there that are on your list. Otherwise, you list is filled with crossovers that do not satisfy your own requirements!
Have you considered the MiniDSP "in a box" 2x4 units? These are very flexible, powerful, and have quite low distortion, etc. The output level is somewhat limited, however, I believe to 2V max. Check the MiniDSP web site and product data sheet for details.
-Charlie
If sound quality is paramount then I would first determine what slope, xover frequency you require by using something that is fully adjustable, then buy something from Marchand Electronics that is custom built to your requirements using one of their passive line level crossovers.
XM46 Passive Line Level Crossover Network, PLLXO, 24 dB/oct
"The high quality of components is responsible for a very good sound quality. Because of the passive design the signal-to-noise ratio is very high. The noise generated by the crossover is much lover than for the electronic crossovers. "
"A filter slope of 24dB/oct is standard, but other slopes can also be provided. Each of the low-pass and high-pass sections can be provided with 1st, 2nd, 3rd or 4th order slope and any xover frequency. Hi-pass and lo-pass can be the same or different. Please specify when ordering"
XM46 Passive Line Level Crossover Network, PLLXO, 24 dB/oct
"The high quality of components is responsible for a very good sound quality. Because of the passive design the signal-to-noise ratio is very high. The noise generated by the crossover is much lover than for the electronic crossovers. "
"A filter slope of 24dB/oct is standard, but other slopes can also be provided. Each of the low-pass and high-pass sections can be provided with 1st, 2nd, 3rd or 4th order slope and any xover frequency. Hi-pass and lo-pass can be the same or different. Please specify when ordering"
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