Which LPG?

Dogma · Post by **Dogma** » Wed Mar 25, 2015 6:20 pm

Still to this day the thomas white LPG with all the mods (the Verbos mod and another i cant remember) is the sweetest of LPGs. And you play around with type of vatorals to find the perfect mix for you.

zvonx · Post by **zvonx** » Sun Mar 29, 2015 1:24 pm

Would someone mind posting a simple sound sample/ demo of what a vactorl ringing out sounds like and how it is different than other vca's? Still trying to get my mind around what a LPG sound is.

davidh · Post by **davidh** » Sun Mar 29, 2015 2:55 pm

I made some comparison here :

https://soundcloud.com/idiot-design/sets/lpg

Normal VCA only works on amplitude of the sound, which sounds very artificial because in the real world (earth atmosphere) and the air absorption, high frequencies are absorbed more than low, that's why to simulate a sound object propagation you need to work with amplitude and frequency at the same time, that's why LPGs are for.

of course you can get the same result with a VCA+VCF, but it cost more money and more time to patch it

zvonx · Post by **zvonx** » Sun Mar 29, 2015 3:06 pm

Fantastic! Thank you! I loved the sound of the QMMG. Awesome bongos too.

By definition are all LPGs vactrol based? So typically you would use a LPG in dual mode to get the filter cutoff and the amp closing?

echoplex · Post by **echoplex** » Sun Mar 29, 2015 4:54 pm

zvonx wrote:Fantastic! Thank you! I loved the sound of the QMMG. Awesome bongos too.

By definition are all LPGs vactrol based? So typically you would use a LPG in dual mode to get the filter cutoff and the amp closing?

Exactly .. !

BTW: I had the chance to wigggle with a optomix this weekend.
As a former QMMG owner I even gotta admit that I liked it LPG sound better than the QMMG..
sounds a bit cleaner in my ears..

davidh · Post by **davidh** » Mon Mar 30, 2015 1:39 am

mostly LPG are made with vactrols, but now you have a digital one (Streams), and one can make it with other components, but vactrols is the cheapest way.

My QMMG and Optomix sounds approximately the same, at least the difference is not more than the difference between QMMG channels.

each vactrol is different, I guess that can make the module sound different.

I changed the vactrol into my dual Borg, lots of timbral difference and in the decay time :
[video][/video]

cupwise · Post by **cupwise** » Mon Mar 30, 2015 2:06 am

CaptainMab wrote:Meng qi has a dual passive low pass gate thats absolutely tiny and sounds great. get one! or four!

i dont have any other lpgs (yet) to compare to, but i really like this one and how small it is and that its passive, and cheap! was a great way to fill in that last couple of hp in my rack.

listentoaheartbeat · Post by **listentoaheartbeat** » Mon Mar 30, 2015 3:25 am

echoplex wrote:
zvonx wrote:Fantastic! Thank you! I loved the sound of the QMMG. Awesome bongos too.

By definition are all LPGs vactrol based? So typically you would use a LPG in dual mode to get the filter cutoff and the amp closing?
Exactly .. !

Nope... Again, there is no amp in an LPG, it's just a filter.

echoplex wrote:BTW: I had the chance to wigggle with a optomix this weekend.
As a former QMMG owner I even gotta admit that I liked it LPG sound better than the QMMG..
sounds a bit cleaner in my ears..

My experience is that a little bit of attenuation helps to get super clean sounds out of the QMMG.

When I had two QMMG, they both sounded completely different, so I guess it makes more sense to compare individual units rather then models (other than features of course).

drxcm · Post by **drxcm** » Mon Mar 30, 2015 3:29 am

Why is everyone is posting that Streams is digital? It's envelope curves are but the signal path is all analog VCA and VCF..

davidh · Post by **davidh** » Mon Mar 30, 2015 3:55 am

thanks I wasn't aware about that,
so only the control is digital in Streams, with digital vactrols

de_raaf · Post by **de_raaf** » Mon Mar 30, 2015 6:40 am

lpgs are cool got qmmq, doepfer, boogie
but at the same time you can get same sounding like stuff with other means too

i think the synchrodyne+expander is pretty good to get into that field when using short eg on the inputvca's (one you need to patch external if you want to use 2nd osc the same as osc1)

Lutin · Post by **Lutin** » Mon Mar 30, 2015 6:58 am

listentoaheartbeat wrote:
echoplex wrote:
zvonx wrote:Fantastic! Thank you! I loved the sound of the QMMG. Awesome bongos too.

By definition are all LPGs vactrol based? So typically you would use a LPG in dual mode to get the filter cutoff and the amp closing?
Exactly .. !
Nope... Again, there is no amp in an LPG, it's just a filter.

Actually, there should be some overall attenuation in the "both" mode. There usually is a voltage divider set up with one large resistor tied to ground in parallel with the second filter cap.

loydb · Post by **loydb** » Mon Mar 30, 2015 10:59 am

Dogma wrote:Still to this day the thomas white LPG with all the mods (the Verbos mod and another i cant remember) is the sweetest of LPGs. And you play around with type of vatorals to find the perfect mix for you.

Do you have a link for the Verbos mod? I'm about to build a quad version of this (2 with fast vactrols, 2 with slow), and am doing the deep switch mod and a mixer. I'd love to see what Verbos did.

Thanks!

Selador · Post by **Selador** » Mon Mar 30, 2015 11:18 am

listentoaheartbeat wrote:
echoplex wrote:
zvonx wrote:Fantastic! Thank you! I loved the sound of the QMMG. Awesome bongos too.

By definition are all LPGs vactrol based? So typically you would use a LPG in dual mode to get the filter cutoff and the amp closing?
Exactly .. !
Nope... Again, there is no amp in an LPG, it's just a filter.

Are you kidding me?

What do you think "both" means, as a third option next to "lopass" and "amp"?

Piranhaconda · Post by **Piranhaconda** » Mon Mar 30, 2015 11:27 am

The only LPG I own currently is Pittsburgh's, and while it's still in my case for what it does as a LPF which is nice, I don't like pinging it at all. I've never compared it with another unit to see if mine stands out in this regard but the decay is so fast that the ping is way too much of just a loud click with barely any tone and ringing to it.

carlosnyb · Post by **carlosnyb** » Mon Mar 30, 2015 11:38 am

Yeah, I'd like to someday have another LPG to compare side-by-side with my PGH LPG -- I don't send in just triggers to ping, I typically send some sort of gate or AD envelope to ping -- I like the LPG's attitude when in VCF mode, and sometimes depending on how I'm sending things to freq cv and ping, it can really get some nice plonks. I'm thinking LPG's are generally like that, though maybe some of them ping nicely with just a trigger or just about any input, not sure?

listentoaheartbeat · Post by **listentoaheartbeat** » Mon Mar 30, 2015 12:23 pm

Selador wrote:
listentoaheartbeat wrote:
echoplex wrote:
zvonx wrote:Fantastic! Thank you! I loved the sound of the QMMG. Awesome bongos too.

By definition are all LPGs vactrol based? So typically you would use a LPG in dual mode to get the filter cutoff and the amp closing?
Exactly .. !
Nope... Again, there is no amp in an LPG, it's just a filter.
Are you kidding me?

What do you think "both" means, as a third option next to "lopass" and "amp"?

http://dafx13.nuim.ie/papers/44.dafx201 ... ion_56.pdf

carlosnyb · Post by **carlosnyb** » Mon Mar 30, 2015 12:39 pm

Different uses of the term 'amp', then.

stephentrask · Post by **stephentrask** » Wed Apr 01, 2015 5:45 pm

Dogma wrote:Still to this day the thomas white LPG with all the mods (the Verbos mod and another i cant remember) is the sweetest of LPGs. And you play around with type of vatorals to find the perfect mix for you.

Is the Thomas White as accurate a rendition of the Buchla sound as the leaky Sputnik that just came out? I love the way that one sounds but folks really seem to be struggling with it.

Also, what do the Verbos and other mods entail? What do they do to the sound?

Dogma · Post by **Dogma** » Wed Apr 01, 2015 5:56 pm

If you use this one it has the verbos and all the other mods already

stephentrask · Post by **stephentrask** » Wed Apr 01, 2015 6:45 pm

Dogma wrote:

If you use this one it has the verbos and all the other mods already

Thanks. That's a pretty nice sounding module. Without the mods, especially the Vactrol mod, I would imagine the sound is a bit closer to the original 292.

whinger · Post by **whinger** » Wed Apr 01, 2015 9:28 pm

Thanks to this thread, I just ordered an MI Streams. You guys are killing my wallet.

Neo · Post by **Neo** » Wed Apr 01, 2015 11:16 pm

Optomix arrived last week... faaantastic!

That said, variability of vactrols is to be expected and indeed one lpg rings for a very short time while the other goes full bongo. Had a quick look but didn't find a thread about swapping out vactrols in Optomix to get a different response. Anyone tried this?

DonaldCrunk · Post by **DonaldCrunk** » Wed Apr 01, 2015 11:37 pm

whinger wrote:Thanks to this thread, I just ordered an MI Streams. You guys are killing my wallet.

Haha, your avatar matches perfectly with your statement. This shit sucks doesn't it

whinger · Post by **whinger** » Wed Apr 01, 2015 11:50 pm

DonaldCrunk wrote:Haha, your avatar matches perfectly with your statement. This shit sucks doesn't it

There are definitely better things I could spend my money on, but it's so much fun! So hard to say no. The fact that it's like adult Lego that makes music doesn't help either.

MOD WIGGLER

MOD WIGGLER

Which LPG?