Befaco bf22

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ZibraZibraZibra
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Befaco bf22

Post by ZibraZibraZibra » Sun Feb 16, 2014 3:26 pm

Image

so yeah went to the hackspace in hackney yesterday and went to one of befaco's kit days.

looked through the kits where a couple caught my eye, but for the money i chose the ms20 inspired filter.

i had a homemade ms20 style filter that was on vero board, the one by rene schmidt but it kept on busting up and didnt sound too great.. think my choices in modifications were wack out so i figured why not spend £120 and get the kit and the chance to talk to some synth people and learn some tricks.

so i got it home saturday night after about 6 or so hours of making not sure what it was going to sound like.

you can see its next to an MA35 in the pic, so i compared the two (albeit the ma35 is modelled after the ms10 filter which i guess was an earlier revision of the ms20) and the befaco one sounds way wetter and you get 2 of them. i love the ma35 which is the closest i got to sounding like my old ms10 but the befaco one has a lot of screaming resonance that really seems to drive at the top end which i like.

so for the price you get 2 identical filters with high and low pass. cv in for resonance amount, one cv in going through an attenuverter which is pritty neat! and a normal cv in for both channels. and a link switch to series them up.

had a bit of trouble with the mounting holes mind im going to have to open them up more so i can fit in the other 2 screws and i managed to fuck up on the varnish a bit when i was there (you can only see the sagging if you look up close). but all in all its a great filter! and 2 of them for £120 is pritty good i think.

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djthopa
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Post by djthopa » Sun Feb 16, 2014 3:51 pm

Befaco rules befaquerooooossssss!

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mha
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Post by mha » Sun Feb 16, 2014 4:55 pm

I got a finished BF-22 off eBay, and it sounds great too, although a bit noisy.

The guy didn't do a great job on the front panel though, since it's 17.5 hp and fits quite badly in my rack. I've tried finding a replacement panel, but it doesn't look like you can buy the kits or parts online.

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Post by ZibraZibraZibra » Sun Feb 16, 2014 5:24 pm

mha wrote:I got a finished BF-22 off eBay, and it sounds great too, although a bit noisy.

The guy didn't do a great job on the front panel though, since it's 17.5 hp and fits quite badly in my rack. I've tried finding a replacement panel, but it doesn't look like you can buy the kits or parts online.
Yeah like I said. We had to put our own screen graphics on the per drilled panel. Then varnish it... I proper ballsed up on the varnish did it a bit too thick and it's sagging! A bit sad. But first time doing that method and all I wouldn't mind getting another panel. Maybe do it silver too!

As for noisy, maybe it's who made it? I guess everyone on eBay etc is going to have been made on one of these kit days so I guess they vary a lot from module to module. As for mine I got home and it was a bit noisy and it turns out I broke a volume pot when screwing it on a bit when I was making it. So I replaced it when I got back after realising and the noise went!

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djthopa
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Post by djthopa » Sun Feb 16, 2014 5:39 pm

mha wrote:I got a finished BF-22 off eBay, and it sounds great too, although a bit noisy.

The guy didn't do a great job on the front panel though, since it's 17.5 hp and fits quite badly in my rack. I've tried finding a replacement panel, but it doesn't look like you can buy the kits or parts online.
That was probably me and one my first diy kits...:cry:
You have to keep in mind that the befaco kits are complete diy. So is the panel. You get a blank piece of alu, then you have to iron the sticker to the panel, so the ink gets transferred to it, but the hardest part ( at least for me) is drilling the holes with a drilling machine, its sound easy but i didnt find it that way. Is it the one with the alien looking eyes in the lights? The panels come cut already so that xtra 0.5hp was probably a fault from the guy that cut the panels.

Anyway, hope you are enjoying it :)

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djthopa
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Post by djthopa » Sun Feb 16, 2014 5:40 pm

And the lights are yellow on that one, are they?

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ZibraZibraZibra
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Post by ZibraZibraZibra » Sun Feb 16, 2014 6:05 pm

Alien looking eyes? How does that work? :hyper:

Yeah I heard the old workshops you had to drill your own panels!

Luckily they come pre drilled now!

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djthopa
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Post by djthopa » Sun Feb 16, 2014 6:08 pm

Wot!!! pre drilled panels?

You lucky bastards!!!

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mha
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Post by mha » Mon Feb 17, 2014 2:22 am

djthopa wrote:And the lights are yellow on that one, are they?
No, the lights are red and no aliens in sight, so it's probably not yours :)

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Post by Spip » Mon Feb 17, 2014 2:54 am

Is there a way to buy their DIY stuff without going to a kit day ?

I don't see any link to a shop on their website.

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Post by djthopa » Mon Feb 17, 2014 6:46 pm

Glad to hear is not mine....no proof of guilt!

jpshea
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Post by jpshea » Wed Mar 05, 2014 8:48 pm

Is the (larger) BF-22 the same circuit as the (smaller) BF-20?

Here's a BF-20 vid:



Regards,
JPS

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Post by jpshea » Fri Mar 07, 2014 7:15 am

I followed up with Diego @ Befaco, who very promptly informed me (quoting with permission):
the filter part is the same, in the BF22 we added an LM13700 to mimic the work of the potentiometer through the cv control

the BF-22 has CV control on resonance and an attenuverter on one of the cutoff controls
Note that the BF20 is not available any more.

The BF-22 schematic is on the Befaco site, linked from this page:

http://www.befaco.org/en/bf-22/

Regards,
JPS

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Post by Befacosynth » Thu Mar 27, 2014 4:16 pm

We have a new run of BF22 if somebody is interested...

http://www.befaco.org/en/tienda/bf-22-diy-kit/

It have all the parts + panel (for now it is hand printed but i think is good enough)...

Image
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Befacosynth
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Post by Befacosynth » Wed Apr 23, 2014 3:59 am

Is there a way to buy their DIY stuff without going to a kit day
yes I have also assembled filters. send me a PM
www.befaco.org
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mha
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Post by mha » Wed Apr 23, 2014 5:14 am

Would it be possible to buy just a single BF-22 front plate? I bought a second-hand BF-22, and the front plate fits very badly in my rack.

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Post by Befacosynth » Wed Apr 23, 2014 9:56 am

sure... I PM you..
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ikkini
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Post by ikkini » Sun Apr 27, 2014 3:22 pm

Just bought the kit, the panel is still a little more than 17hp... Assembly was quite easy, but unfortunately two capacitors were missing, so I have to wait until tomorrow to finish it and see how it sounds ! I can hardly wait !!!

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Post by Befacosynth » Tue Apr 29, 2014 7:27 am

What capacitors are missing? I want to check the other kits. Also I can send them to you tomorrow.
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ikkini
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Post by ikkini » Tue Apr 29, 2014 4:01 pm

3.3 nF were missing, but a friend gave me the missing parts and I finished the module !
It sounds really fat and evil !

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alangave
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Post by alangave » Thu May 01, 2014 5:35 pm

Hi,

Same, got mine last Monday, built it last night, and ... the 3,3nF caps where missing too.

Not a big deal, PM 'ed them to get proper Cap type (poly ? Ceramic ?), got the answer immediately, and found part in my stock.

I also had some trouble with mounting holes : they need to be reworked/enlarged a bit (I used an xacto knife for this)

But, those are little concerns for such a great sounding/crunchy double filter!

Great Kit for that price!

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mha
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Post by mha » Thu May 08, 2014 4:18 pm

Got my replacement faceplate directly from Befaco today - great service! :tu:

It's well made and has a much nicer finish than my original one, which looked like it was made by hand (and it was :hihi:).

It's 17HP though :waah:

I took a photo and updated the picture on ModularGrid as well, since the current one looked a bit off.

Image

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saemola
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Post by saemola » Mon May 19, 2014 6:17 pm

hey guys, this is not clear to me by reading the website: does the kit include EVERY single part required to build the module?
panel, knobs, ...
modular grid says the module is 17hp, Befaco says it's 16... which one is it?

also, same questions about the Dual Atenuverter if anyone built one: complete kit including knobs and panel?
4 or 6 hp?

cheerds!

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mha
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Post by mha » Tue May 20, 2014 1:19 pm

saemola wrote: modular grid says the module is 17hp, Befaco says it's 16... which one is it?
I can confirm that the BF-22 face plate is 17HP

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alangave
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Post by alangave » Tue May 20, 2014 5:55 pm

I can confirm, Kit comes with every single part requires, only part to provide are the m3 screws...

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