Building a Sonic Potions LXR in 2019?

From circuitbending to homebrew stompboxes & synths, keep the DIY spirit alive!

Moderators: Kent, luketeaford, lisa, Joe.

Post Reply
MoyaMoya
Common Wiggler
Posts: 145
Joined: Sat Jul 06, 2019 10:13 pm

Building a Sonic Potions LXR in 2019?

Post by MoyaMoya » Sat Oct 12, 2019 1:42 am

I populated a mouser/reichelt basket and cant decide on pulling on the trigger.

The features of the LXR seem pretty outstanding.
But as the kits are not longer available, the total cost of materials are substantially higher.
Roughly $100 more.

and likewise it seems as though there is not much in the way of support,
although there is a ton of documentation available.

So come on wigglers help me out?
do I pull the trigger?
or hold fast until the next shiny thing catches my eye?

Can't think of many other drum machines with 7 triggers out
and modulating parameters in the sub $400 market.

User avatar
TheMentat
Common Wiggler
Posts: 183
Joined: Thu Nov 30, 2017 1:48 am
Location: Ocean Park

Post by TheMentat » Sat Oct 12, 2019 2:17 am

I built one last year... pretty happy with it. Not much out there in the DIY realm that competes.

I’ve tried a few different firmwares, and will admit that some of the advanced midi stuff tries my patience. But I’m back to the original firmware, and it makes great noise.

It’s hard to imagine that somebody is gonna come up with something better in a similar price bracket!

MoyaMoya
Common Wiggler
Posts: 145
Joined: Sat Jul 06, 2019 10:13 pm

Post by MoyaMoya » Sat Oct 12, 2019 11:58 am

Thanks for the quick response!
I guess my main concern is I pull the trigger
And a week later an MK2 rolls out for half the price.
But I dont quite see that happening.

Which route did you go for the enclosure?

alexam
Learning to Wiggle
Posts: 20
Joined: Sat Feb 02, 2019 1:01 pm
Location: Germany

Post by alexam » Sat Oct 12, 2019 3:31 pm

I build one up some months ago, but with getting the parts from mouser and reichelt I paid like 50€ Less than the kit. I like it a lot for the sound and the usability. For the case I Laser cutted 3mm mdf wood .. not the best and I think the acrylic is nicer.

Also I have to say the build was a bit exhausting.

- I use the Brendan Clarke firmware

MoyaMoya
Common Wiggler
Posts: 145
Joined: Sat Jul 06, 2019 10:13 pm

Post by MoyaMoya » Sat Oct 12, 2019 4:25 pm

I went ahead and pulled the trigger,
Ordered an Erica synths b stock metal enclosure as well.

The overage that I'm paying is mostly shipping to the states
Which is unfortunate,
But that's just the way the cookie crumbles.

I'm really looking forward to the build,
Along with the other dozen or so projects I have on the bench lol

Are the buttons really kept in place by putty?
This seems a bit odd...

User avatar
TheMentat
Common Wiggler
Posts: 183
Joined: Thu Nov 30, 2017 1:48 am
Location: Ocean Park

Post by TheMentat » Sun Oct 13, 2019 11:33 pm

yeah... seems strange with the buttons, but it works.

You will be happy with it. if you really want to get crazy, you can build a 60knobs for it!

https://bastl-instruments.com/instruments/60knobs

MoyaMoya
Common Wiggler
Posts: 145
Joined: Sat Jul 06, 2019 10:13 pm

Post by MoyaMoya » Mon Oct 14, 2019 5:31 pm

Bastl killed it with the 60knobs,
it will definitely be my next order.

The real magik being it's multi platform compatibility

a DX7 programmer for less than a grand,
yes please!

Like wise I'm sure it will work with a multitude of NRPN applications,

Cant wait to pair it up with my ASRX pro,
should open up a world of possibilities :bananaguitar:

toneburst
Ultra Wiggler
Posts: 864
Joined: Fri May 02, 2014 2:41 pm
Location: London

Re: Building a Sonic Potions LXR in 2019?

Post by toneburst » Sun Apr 05, 2020 1:38 pm

Hi guys,

sorry to reanimate a long-dead thread, but does anyone happen to have part numbers for the the lightpipes and rubber washers used to hold them in place, that used to ship with the Erica Synth metal LXR case?

I'm retro-fitting a metal case to my old LXR, but would prefer not to desolder the LEDs, and the case I just bought didn't ship with the lightpipes or washers unfortunately.

MoyaMoya
Common Wiggler
Posts: 145
Joined: Sat Jul 06, 2019 10:13 pm

Re: Building a Sonic Potions LXR in 2019?

Post by MoyaMoya » Sun Apr 05, 2020 11:23 pm

If any one knows I'd like the same info!

MoyaMoya
Common Wiggler
Posts: 145
Joined: Sat Jul 06, 2019 10:13 pm

Re: Building a Sonic Potions LXR in 2019?

Post by MoyaMoya » Sat Apr 11, 2020 2:04 pm

Bump :hail:

User avatar
grm
Learning to Wiggle
Posts: 24
Joined: Fri Nov 18, 2016 4:49 pm
Location: swamp

Re: Building a Sonic Potions LXR in 2019?

Post by grm » Sun Sep 06, 2020 5:42 pm

toneburst wrote:
Sun Apr 05, 2020 1:38 pm
Hi guys,

sorry to reanimate a long-dead thread, but does anyone happen to have part numbers for the the lightpipes and rubber washers used to hold them in place, that used to ship with the Erica Synth metal LXR case?

I'm retro-fitting a metal case to my old LXR, but would prefer not to desolder the LEDs, and the case I just bought didn't ship with the lightpipes or washers unfortunately.
oops this might be a bit late.

do you mean these?
Image

i have them as leftovers, as i did not use them in a commision build with an erica enclosure, i did a few years back.
they seemed like they might drop out any moment. i had the LEDs all the way up to the holes, i think. apparently i also did not believe in 'blu goo'. :waah:

MoyaMoya
Common Wiggler
Posts: 145
Joined: Sat Jul 06, 2019 10:13 pm

Re: Building a Sonic Potions LXR in 2019?

Post by MoyaMoya » Sun Sep 06, 2020 5:55 pm

How did you fit the buttons without the Blu goop if you dont mind me asking?

I really don't like the way some of my buttons feel.

mtts
Learning to Wiggle
Posts: 44
Joined: Sat Nov 11, 2017 2:20 pm

Re: Building a Sonic Potions LXR in 2019?

Post by mtts » Mon Sep 07, 2020 12:29 pm

Just out of curiosity: OP says kits are no longer available.

However, a quick Google yields this:

https://www.sonic-potions.com/shop/?pro ... mplete-kit

What am I missing here?

MoyaMoya
Common Wiggler
Posts: 145
Joined: Sat Jul 06, 2019 10:13 pm

Re: Building a Sonic Potions LXR in 2019?

Post by MoyaMoya » Mon Sep 07, 2020 12:38 pm

When I posted this originally back in October of 2019 kits were unavailable as well as metal casings.
I had to purchase pcbs and components separately as well as a C stock case.

Yes I know how to use google as well..

Shortly after at the beginning of 2020 Stock of complete kits were refilled
which kinda sucked because I had to source parts from multiple distributors
and ended up costing me more than a complete kit.

If I would have known the kits where to be restocked I would have just waited.
But seeing as how the OS hadn't been updated in years with known bugs
I thought the product was at the end of it's shelf life.

Hence building an LXR in 2019?
Still worth it?

For me yes and no..
I love the I/o options and punchy FM nature

But the software bugs make it infuriating
your mileage may vary.

User avatar
revtor
Dialing it in..
Posts: 1788
Joined: Sat Nov 29, 2008 10:31 am
Location: North Jerz

Re: Building a Sonic Potions LXR in 2019?

Post by revtor » Tue Sep 08, 2020 9:25 am

I built one and used it for years and never had any issues with software bugs. Great sound and pretty easy to program and all the inputs and outputs were fun for interfacing.

MoyaMoya please share what software bugs infuriated you!! Helpful information for someone on the fence about going the LXR route
Fellow North Jersey Synthaholic

MoyaMoya
Common Wiggler
Posts: 145
Joined: Sat Jul 06, 2019 10:13 pm

Re: Building a Sonic Potions LXR in 2019?

Post by MoyaMoya » Tue Sep 08, 2020 9:43 am

My main issue was using the morph function which I absolutely love. However after about an hour of jamning if I used the morph function all my patterns would erase. This happens mainly on the stock OS and Owl. I recently installed the BC firmware but haven't used it extensively as time has not allowed.

Other things that would happen after about an hour of jamning is the patterns would remain active but all the leds would reset to blank on the sequencer so I could not see which steps had been activated.

I really liked the pattern generator on OWL but when I decided to do external processing with my eurorack I found that the digital filters were always active even when turned off. Moving the frequency resulted in an audible difference. My idea being digital sound source with analog filters backfired.

Also I would spend a good deal of time programing where and at what levels I wanted my signal routing. IE kick thru 1L snare thru 1R high hat thru 2L etc..only to loose it all when using the morph function..once again the feature I enjoyed the most.

Not to mention random crashing again once about an hour into a performance as in a complete freezing of functions.

And of course not having the sonic potions forum as a resource really blows. Especially since I do not have a Facebook to access the user group.(a personal choice)

I like the machine dont get me wrong but in my setup it is
far too un stable to rely on for anything more than jamning.

MoyaMoya
Common Wiggler
Posts: 145
Joined: Sat Jul 06, 2019 10:13 pm

Re: Building a Sonic Potions LXR in 2019?

Post by MoyaMoya » Tue Sep 08, 2020 9:53 am

If this sounds more like a hardware issue and not software related I am totally open to suggestions and troubleshooting :sb:

User avatar
revtor
Dialing it in..
Posts: 1788
Joined: Sat Nov 29, 2008 10:31 am
Location: North Jerz

Re: Building a Sonic Potions LXR in 2019?

Post by revtor » Tue Sep 08, 2020 11:23 am

LEDs freezing after an hour sounds like it could be hardware (heat causing faulty solder joint to open) or software (overflow?)

I never used the morph function!

Is the forum down or just dead? That stinks, it was a great resource.
Fellow North Jersey Synthaholic

MoyaMoya
Common Wiggler
Posts: 145
Joined: Sat Jul 06, 2019 10:13 pm

Re: Building a Sonic Potions LXR in 2019?

Post by MoyaMoya » Tue Sep 08, 2020 11:38 am

When trying to connect to the forum I get:
The requested URL was not found on this server.

And this was even before I decided to build one.
As far as I know it has been permanently taken down.
But if any one has any info I do not please feel free to share
Like I said I abstain from social media for mental health reasons :omg:
so there may be info I am not privy to.

Aww man your missing out on the morph function..
All the weird glitchy in between sweet spots are why I keep it around!

However with the PROK drums now offering a similar function.
My LXR might have its days numbered.

And as for the Led's randomly clearing out
to me it felt like a software issue because it only happens once I get 5-6 intricate parts going
and then use the morph function. Like you hinted at Software overload.

But when I have a chance I will double check solder joints.
Thank you for your suggestion :guinness:

toneburst
Ultra Wiggler
Posts: 864
Joined: Fri May 02, 2014 2:41 pm
Location: London

Re: Building a Sonic Potions LXR in 2019?

Post by toneburst » Sun Sep 13, 2020 12:49 pm

However with the PROK drums now offering a similar function.
My LXR might have its days numbered.
PROK drums have a similar parameter morphing concept, but don’t expect anything like the sound quality of the LXR.

The limitations of the Teensy’s crappy builtin 12-bit DAC really show, especially on the BD, where aliasing is painfully obvious.

toneburst
Ultra Wiggler
Posts: 864
Joined: Fri May 02, 2014 2:41 pm
Location: London

Re: Building a Sonic Potions LXR in 2019?

Post by toneburst » Sun Sep 13, 2020 12:52 pm

Incidentally, talking of morphing; is it expected behaviour that a kick drum in the top channel always seems to drop out entirely in the middle half or so of the morph range?

MoyaMoya
Common Wiggler
Posts: 145
Joined: Sat Jul 06, 2019 10:13 pm

Re: Building a Sonic Potions LXR in 2019?

Post by MoyaMoya » Sun Sep 13, 2020 3:04 pm

Yup! I expierence this almost always but really depends on which kits you have loaded and how they are routed.

some more than others..

But I don't think I've ever had a combination that didn't loose a significant amount of volume.

An interesting effect none the less..

User avatar
autodafe
Wiggling with Experience
Posts: 343
Joined: Mon Oct 02, 2017 3:14 am
Location: Italy
Contact:

Re: Building a Sonic Potions LXR in 2019?

Post by autodafe » Sun Sep 13, 2020 4:10 pm

I recently traded a LXR (with Metal case and separate outs) in echange for an Ambika I had built. I absolutely love it. I am using BC Firmware, loving the "Morph" function, as well as the "Sample Rate" reduction. I am syncing it with my modular and other stuff and works and sounds very well.
I Still have to master many advanced functions...

Post Reply

Return to “Music Tech DIY”