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Messages - 6581punk

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PreenFM1 (the blue one) / :))))
« on: April 17, 2012, 12:01:01 AM »
In the end I reflowed a few joints on the audio socket and around the filter chip and it's all working fine now :)

PreenFM1 (the blue one) / Re: Sound level problem :(
« on: April 16, 2012, 04:19:35 PM »

I'll try it later when I get home :)

I will plug it into some PC speakers and play it immediately to be sure it's not happening on that either.

PreenFM1 (the blue one) / [Solved]Sound level problem :))))
« on: April 16, 2012, 12:54:08 AM »
Hi all,

I've just set up my Preen in my studio set up. It works fine when plugged into some cheap PC speakers, but when I hooked it into my audio interface it sounds really quiet.

I have an Echo Audiofire 12 firewire interface which I have the Preen and my other kit connected to.

When I unplug the audio lead from the Preen and then plug it back in the sound is at normal volume but then quickly quietens. It's almost like something is dragging it down or it doesn't have enough signal level.

I've tried powering it from different sources, tried different leads and sockets to no avail.

Any ideas?

I will double check my PCB later, but I've built quite a few things that are working fine.

This sort of makes me wonder if it is some sort of weird incompatibility:

"A swift email exchange with Echo's boffins confirmed that this noise isn't a fault at all, but a byproduct of the rather unusual Cirrus Logic converters used in the Audiofire range, as well as in the 3G and Indigo IO. These particular converters use IIR (Infinite Impulse Response) filters instead of the more usual FIR (Finite Impulse Response) designs adopted by most competitors like AKM."

PreenFM1 (the blue one) / Re: It's alive!
« on: April 04, 2012, 10:33:35 PM »
The positioning is fine. What I mean is the switches and encoders usually clip into the PCB and are held in place with the springy legs. You can then just solder them without them moving.

With the encoders I just bent the side tabs until they gripped, with the switches I bent the tabs over to stop them moving.

It's not a big deal really :)

I've got a SSM2044 Shruthi-1 and a Polivoks one. The SMR4 board is connected to the Sidekick board for weird and wonderful noises. I built up a MIDIPal tonight.Surface mount is a pain :)

Do you have any plans for any future devices? physical modelling is rather neglected ;)

I also thing the LA synthesis of the D50 is due for some sort of revival. Having sampled note starts with synthesis sustain or a mixture.

PreenFM1 (the blue one) / Re: It's alive!
« on: April 02, 2012, 10:05:27 PM »
Finished my Preen earlier. Worked first time. I've built quite a lot of stuff recently and it was a nice easy build compared to the filter boards for the Shruthi-1 I've been doing.

Sounds even better than I had hoped for, so simple to program too.

The only thing I would change is the pots, encoders and tactile switch holes. They don't really snap in place like they should. But that's just nit picking.

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