active sub filter questions - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 9th August 2005, 03:39 PM   #1
diyAudio Member
 
paulspencer's Avatar
 
Join Date: Sep 2003
Location: Melbourne, Australia
Default active sub filter questions

I'm looking at this subwoofer filter kit:

http://www.altronics.com.au/index.as...=item&id=K5562

Click the image to open in full size.

I have a similar kit already in my system, however this one has an "auto power on" function, which I was going to add to my system at greater cost than this kit, for a mains slave switch kit.

* can anyone advise on modifying this kit (given a schematic) to lower the xo point (only goes as low as 60 Hz, and I'd like to have it xo at 40 Hz)?

* how does one use it to get a separate power amp to power up? Will this work for switching on any separate amp?

Previously I was going to get one of these kits:

http://www.altronics.com.au/index.as...=item&id=K6046

Click the image to open in full size.

but it seems like the sub processor kit will do a similar job. Am I right? I understand how the mains slave trigger kit works, but not sure about auto power on ...
  Reply With Quote
Old 17th October 2005, 10:13 AM   #2
JDeV is offline JDeV  South Africa
diyAudio Member
 
Join Date: Oct 2002
Location: Cape Town
Default Re: active sub filter questions

Quote:
Originally posted by paulspencer
I'm looking at this subwoofer filter kit:

http://www.altronics.com.au/index.as...=item&id=K5562

Paul,
Did you manage to find this or a similiar design?
What are you using now?
__________________
"Be carefull who's advice you buy, but be patient with those who supply it."
From Baz Luhrmann's - Everybody’s Free (To Wear Sunscreen)
  Reply With Quote
Old 17th October 2005, 10:50 AM   #3
diyAudio Member
 
paulspencer's Avatar
 
Join Date: Sep 2003
Location: Melbourne, Australia
JDeV,

I currently have a similar kit which is available at Jaycar www.jaycar.com.au which is in Australia

It has a variable LP filter, a defeatable 20 Hz 3rd order rumble filter, and one band of parametric eq.

For the moment I'm happy with it. Easy to build and has the basics. Soon I'll be trying out DCX as a 3way active xo.
  Reply With Quote
Old 17th October 2005, 10:58 AM   #4
Did it Himself
diyAudio Member
 
richie00boy's Avatar
 
Join Date: Nov 2003
Location: Gloucestershire, England, UK
The filter point should be easily changeable by a couple of resistors and/or capacitors. I would hazard a guess that the relay switches the mains upon detection of signal so should work with any power amp that doesn't draw too much mains current. I'm sure the vendor can quickly and easily advise on the relay rating and confirm my thoughts.
__________________
www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more.
  Reply With Quote
Old 18th October 2005, 04:50 AM   #5
diyAudio Member
 
David Gatti's Avatar
 
Join Date: Mar 2004
Location: Melbourne, Australia
Quote:
Originally posted by paulspencer
JDeV,

I currently have a similar kit which is available at Jaycar www.jaycar.com.au which is in Australia

It has a variable LP filter, a defeatable 20 Hz 3rd order rumble filter, and one band of parametric eq.

For the moment I'm happy with it. Easy to build and has the basics. Soon I'll be trying out DCX as a 3way active xo.
Paul
Are you talking about the Behringer DCX2310?
I'm thinking about using it.
What driver are you using btw?
  Reply With Quote
Old 18th October 2005, 05:05 AM   #6
diyAudio Member
 
paulspencer's Avatar
 
Join Date: Sep 2003
Location: Melbourne, Australia
David,

You must mean Behringer Ultradrive - DCX 2496 - 3 way digital active xo, right?

With your speakers you might even consider Clarity Eq - more expensive but its more powerful and also has eq, and you can buy a refurbished unit for $1500ish IIRC. It has features similar to Ultradrive and Ultracurve which together at a good price well below retail go for about $1000.

DCX I'd expect to be able to get hold of for about $390, based on discount off retail I got last year. I'm looking at doing a group buy this Christmas, since as a group we can more likely get a good price. If we can get price down to $350 as a group that would be nice! There is a group buy for the US, but we really need to buy from here to get reliability, the service centre guy told me units bought overseas are notoriously unreliable here due to the power supply, even though they can be switched.

Shoot me an email if you like
  Reply With Quote
Old 18th October 2005, 05:11 AM   #7
diyAudio Member
 
David Gatti's Avatar
 
Join Date: Mar 2004
Location: Melbourne, Australia
OK, I just saw your website - Stryke Audio AV12.
Where did you buy it?
  Reply With Quote
Old 18th October 2005, 05:26 AM   #8
JDeV is offline JDeV  South Africa
diyAudio Member
 
Join Date: Oct 2002
Location: Cape Town
Quote:
Originally posted by paulspencer
JDeV,

I currently have a similar kit which is available at Jaycar www.jaycar.com.au which is in Australia

It has a variable LP filter, a defeatable 20 Hz 3rd order rumble filter, and one band of parametric eq.
Hi Paul,
Do you maybe have a circuit for this that I may have a look at?
I build one myself a while ago, but does not work very well anymore.

Controller
__________________
"Be carefull who's advice you buy, but be patient with those who supply it."
From Baz Luhrmann's - Everybody’s Free (To Wear Sunscreen)
  Reply With Quote
Old 18th October 2005, 05:50 AM   #9
diyAudio Member
 
paulspencer's Avatar
 
Join Date: Sep 2003
Location: Melbourne, Australia
David,

I bought my subs from Stryke (now AE speakers). I purchased during pre-order so they were only $120 each USD, but after adding 5% customs and shipping, they cost $320 each, which I was happy with at the time since a Shiva would have cost only $20 less and I find this a lot more impressive than a Shiva! 23mm xmax, very nicely built, high power handling, and a stylish aluminium cone.

JD,
Here is a schematic:
Attached Images
File Type: jpg sub processor schematic.jpg (95.7 KB, 407 views)
  Reply With Quote
Old 18th October 2005, 09:40 AM   #10
JDeV is offline JDeV  South Africa
diyAudio Member
 
Join Date: Oct 2002
Location: Cape Town
Quote:
Originally posted by paulspencer
JD,
Here is a schematic:
Thanx Paul

Does anybody have an idee for an "auto on/of" circuit.
I tried the ESP (Rod Elliot) circuit, but not working well when I build it
__________________
"Be carefull who's advice you buy, but be patient with those who supply it."
From Baz Luhrmann's - Everybody’s Free (To Wear Sunscreen)
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
I need an active sub filter! hernanstafe Subwoofers 18 4th December 2007 09:32 PM
active filter from rod elliot and sub filter questions wuffer Parts 0 2nd October 2005 01:12 PM
Active Filter Questions ChevS-10 Car Audio 2 26th June 2005 06:37 PM
Active 3 Way vs Active 2.1: Too many alignments and too may questions. goldyrathore Multi-Way 1 22nd April 2005 02:42 PM


New To Site? Need Help?

All times are GMT. The time now is 12:10 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2