BF-500 // Butterworth Filters in 500 Format

Help Support GroupDIY:

elskardio

Well-known member
Joined
Sep 29, 2010
Messages
438
Location
Montreal - Canada
Hi Guys,

A few months ago a colleague ask me if I could build a simple LPF & HPF in 500 format. Here's the result  ;)

- Independent In/Out switch for both bands
- 6 dB/oct switch for both bands (12 dB/oct. default)
- Bump function on the HPF (à la Harrison) = 5 dB (modified to 3 dB) resonance around the cutoff frequency.
- LED indicator on every switch

Cheers

Gabriel
Chambord Audio
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If you're interested in purchasing a BF-500 module,

you can place your order here: https://chambordaudio.com/product/bf-500-filters/


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BF-500_1.jpg

BF-500_2.jpg


- Frequency response of the actual Hardware unit showing the 2 slopes and the Bump function of the HPF:

BF-500_Freq_Resp.jpg
 

TwentyTrees

Well-known member
Joined
Sep 17, 2015
Messages
357
Location
London, UK
elskardio said:
Hi Andy,

Thank you for the comment.
Any progress on the new album?

Cheers

Heh! The album’s going well thanks, if very slowly! As I always say, if a thing is worth doing, it’s worth over-doing...

If you were to offer kits of these, do you have a sense of how much you’d sell them for?

Andy
 

Joechris

Well-known member
Joined
Jun 3, 2004
Messages
320
Location
Norway
Yes, its beautiful!! I want two kits.
Hope you consider making a bax style eq with the same kind of layout..!
Best
Jo
 

bobbenozzo

New member
Joined
Mar 3, 2016
Messages
3
Really interesting! would it be possible to have the 12-18 dB/oct option?
The 18 dB/oct hi pass (like neve's) is very musical on bass, kick, and many other sources.
 

elskardio

Well-known member
Joined
Sep 29, 2010
Messages
438
Location
Montreal - Canada
Hi Guys,

nice to see some interest in the BF-500 ;)

For 10 kits or more, I could make a small batch.

I started a list of the members who showed interest in the first post.

If you would like to buy a kit, please let me know and I'll add your name to the list.

Cheers
Gabriel
 

kante1603

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Joined
Dec 2, 2009
Messages
1,942
Location
Munich,Germany
Very nice indeed,well done!
May I ask for a rough kit price in case you‘d get ten or more orders (haven‘t found any yet)?
I/O is balanced I guess,may I ask how (looks like INA and DRV,but it‘s hard to see from the picture)?


Thank you in advance,


Udo.
 

elskardio

Well-known member
Joined
Sep 29, 2010
Messages
438
Location
Montreal - Canada
kante1603 said:
Very nice indeed,well done!
May I ask for a rough kit price in case you‘d get ten or more orders (haven‘t found any yet)?
I/O is balanced I guess,may I ask how (looks like INA and DRV,but it‘s hard to see from the picture)?

Hi Udo,

Yes the I/O is balanced using the INA/DRV combo.

I'll try to calculate the kit price this week  ;)

Thanks
Gabriel
 

elskardio

Well-known member
Joined
Sep 29, 2010
Messages
438
Location
Montreal - Canada
Hi Guys,

just to clarify, I will collect payment the first week of October before ordering everything. I'll post the details at the end of the month.

Thanks
 

elskardio

Well-known member
Joined
Sep 29, 2010
Messages
438
Location
Montreal - Canada
Hi guys,

sorry for the delayed response...  busy with work  ;)

5 members has shown interest in a pair of kits:

Bonsaimaster (confirmed)
SKJGProject (confirmed)
amassivetree 
bobbenozzo (confirmed)
Mulmany (confirmed)

If you're all on board, we have 10 kits and I will make it happen.

Please confirm with a reply.
Cheers
 
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