DIY info on band pass filter pedal plz!

[vene-nemesis]

I recently tried a bass wich preamp i loved but the makers wont sell it unless it is on one of their basses (starting price is 3500€). The preamp was quite simple, very similar to the glockenklang onboard pre but with an added bass band pass filter.

So i was wondering if there is a way to make a DIY pedal that with said band pass filter.

Ok i know there is but what i mean is can you point me out in the direction of the kind of info i would need to build it?


Thx in advance guys!

[Taylor Livingston]

Is it Wal of which you speak by chance? As I recall it's actually more like a resonant lowpass - a boost at the cutoff frequency makes the mids more pronounced, like a bandpass, but without as steep a cutoff at lower frequencies.

AC Guitars in England sells a similar preamp:

http://www.acguitars.co.uk/newsarticle.php?ID=63

[vene-nemesis]

No, Its a weissehugel. And i want an onboard semiparametric EQ and the band pass filter. But i thought it would be nice to have it as an outboard so i can use it on multiple basses.

I knew about the ACG but it is quite expensive.

[Taylor Livingston]

There are many, many bandpass filter schematics which are a quick Google search away. However, they won't all sound the same, and they won't necessarily sound precisely like the one you played. A single stage of fully parametric equalization would be the most flexible way to replicate the gain, frequency and bandwidth of the filter whose sound you like.

[vene-nemesis]

Originally Posted by conical johnson

There are many, many bandpass filter schematics which are a quick Google search away. However, they won't all sound the same, and they won't necessarily sound precisely like the one you played. A single stage of fully parametric equalization would be the most flexible way to replicate the gain, frequency and bandwidth of the filter whose sound you like.

Im conscious of all of this, i know that i will have to determine the frequencies spectrum in wich i want the filter to work and that will requiere some trial and error.

The deal is that the filter installed in that bass wich had parametric EQ did something that my actual bass does but a lot better. And thats what i want to replicate to change the tone of my bass by just rotating one knob and not having to alter my parametric EQ.