Subwoofer Filter PCB with LFE sensing, EQ sections, 12/24 dB LR cutoff - Page 2 - diyAudio
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Old 7th March 2011, 01:50 AM   #11
Tim F is offline Tim F  England
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I'd take two if available by June.
Would be great if the linkwitz was bypassable.
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Old 7th March 2011, 12:42 PM   #12
Mfly is offline Mfly  Netherlands
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Time is freeing op somewhat now. So I'll start the modifications.

Had some backup issues at home and unfortunately lost a few files (including the latest board designs). But since I was redesigning anyway, it's not that big a loss.

I'll keep you guys informed.
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Old 8th March 2011, 11:01 PM   #13
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Default I am in...

Yes, I would take at least two depending on final price.
I will keep watching the thread to avoid missing on a good opportunity.
Thanks!
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Old 21st August 2011, 04:13 PM   #14
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Quote:
Originally Posted by dudaindc View Post
Yes, I would take at least two depending on final price.
I will keep watching the thread to avoid missing on a good opportunity.
Thanks!
Any progress on this front?
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Old 10th October 2011, 10:17 AM   #15
Mfly is offline Mfly  Netherlands
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Sorry everybody for my extreme long lapse in attending the forum and updating this thread.

Started a new job this year and this proved to be very time consuming. I am on the design again and will finish soon.

Keep you updated.
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Old 10th October 2011, 04:32 PM   #16
...truth seeker...
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I have been following this since it began...probably many others have been as well...I look forward to the product
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Old 10th October 2011, 06:37 PM   #17
thosuk is offline thosuk  United Kingdom
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I've just discovered this thread which covers just what I need. Speakers are my main interest and I would like to experiment with multiple (but could be different) subwoofers. I have a couple of old stereo amps with inputs direct to the power amps. As my subs will vary, and placement will be an issue, I could use multiple PCBs and populate sections as appropriate.
I don't don't know how to split the input signal to multiple PCBs, or the best way to connect power and signal grounds. Would it be possible to just link the PCBs at suitable connection points? If not, I would be happy to solder a separate stripboard if someone could provide a suitable schematic. Others might want to have say a pair of paralleled outputs if they have low power amps that are not able to drive a pair of subs.

I'm definitely interested in buying a few of these boards.
Tom
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Old 8th December 2011, 01:32 AM   #18
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Default Nudge time...

NUDGE!
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Old 8th December 2011, 01:37 AM   #19
F1 FAN is offline F1 FAN  Canada
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NUDGE,NUDGE.
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Old 12th December 2011, 07:25 AM   #20
Mfly is offline Mfly  Netherlands
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Finally got some time to work on the board... Sorry for you people who have been waiting.

I've added a rumble filter and a phase switch. I also moved the power input to the top of the board. I have decided to keep the equalizer sections as they are, because they have more flexibility for adjustment compared to a parametric equalizer and take a lot less space on the control side. A subwoofer will probably be in the same room for a long period of time so there shouldn't be any need for continuous adjustment.

I am now almost finished with the board, have to find a solution for 1 trace and do some error checking.

I'll upload the new schematics and board in the coming weeks (before the end of the year, I promise!). I will also collect all calculation tools for the equalizer, linkwitz transform, etc.

For people still waiting, thank you for your patience!
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