Does this suggest that even AMS started with Schroeder?

No idea. Would be interesting to know some technical details on those AMS units.

This Peavey Univerb arrived today.

If it turns out to be as interesting as I anticipated then I will post some examples of it. Given the holidays and all this likely won’t happen until next year. But I’ll get around to it.
In the meantime I will get to know it inside and out.

here's photos of the Suplex 4170 i mentioned way back in this thread. it's a BBD delay with a spring. definitely imparts a bit of 'dust' - old dust rather than stardust. i've been thinking that the spring connections could be switched out and connected to speaker and microphone in a chamber, or sent to a plate - ?
'argus' where i am is saying this is worth 66eu, but i've only seen a couple of them for sale. is it a reverb, is it a delay? ..





only known vid of it:

While making some examples of my Waldorf Iridium I used the Univerb I bought last week.

You can find details and sounds in this posting here…

Number 113

Modern FM Synth Showdown

@ Hollowman9 any thoughts about how the i/o to the spring above might be re-routed/re-routable to, eg: a plate, a 'chamber'(bathroom/toilet etc)

seems like it's already pretty much set up for something like that.

or other stuff to do with a spring ?!

It does not take a lot of power to drive a spring, whereas it will take more power to pursue the alternate options you mention above. You'd be better off exploiting a headphone amplifier or small amplifier for echo chamber stuff.

If you're dissatisfied with the sound the spring produces you could look into replacement tanks, understanding you're somewhat restricted on size (best fit will also require electrically measuring the input and output coils and purchasing something with similar ranges).

no, just really curious first thing that popped into my head when i opened it, 'what if?'

what are the differences between spring, plate and chamber ?
in terms of method/physics/signal level/impedance etc. ?

(wiki ... )

The differences are quite literally outlined in their names.

It's the medium through which an introduced signal travels. The medium will impart its own flavor of artifacts.

To introduce signal to the different mediums requires different approaches/transducers/etc., the same goes for recovery of the now altered signal.

edit: you may have been asking about sonic differences between the reverb types? That should be easy enough to dig into via youtube demos, etc. One could write books on that subject and still miss things, best to follow your ears as opposed to my clumsy translations.

With all the time in the world, we could go into a deep dive on one particular format - but that would only be looking at a sliver of the options.

I find when thinking on reverb, it's more useful to me to consider the medium as a fluid, be it air, formed metal, or other.

To dial back to the root topic, I find the Digitech DSP 128+ ultimate reverb algorithm is lofi with character in a rack format.

You could try putting the spring in the toilet
I’d be curious as to the affect of submersion in water changing the response of it.
I saw some interesting experiments on video years ago where people were taking those bass drivers for cars and attaching them to metal drums and other large cavities. Can’t remember how to find those again.

Near where I live is a rails to trails that I have a Membership and ride my motorcycle on it. There’s an underpass it goes through made of corrugated steel piping and the sounds you get inside it are absolutely bizarre and interesting. I’ve been trying to figure out how to use this 65’ long underpass as a reverb. It would take a pretty large amplifier that could run on batteries. Not many options there nowadays though some old PA amps do have inputs for battery power. Likely a car battery!

As for your device I wouldn’t know where to begin without seeing schematics of it. I can’t offer any helpful suggestions, sorry.

i have a length of piping about 5mm thick PVC with lots of potential. did see one of those pipe spring things one day. so i think i could just have some sort of bypass to something like that, with a big weird spring in it.
(wasn't it a slinky? where can you get slinky springs these days? i think the one i saw had something like that in it) - 'spring du jour', 'spring à la mode', ... ('plate' du jour? boomboom)

Made a short "demo" of the Alesis Midifex

And a demo of the Alesis XT Digital Reverb (1985)

Yamaha R-1000 fits the bill for me in the lo-fi/trashy/cheap (in a good way) reverb category.

It's basically got four presets but the 3 band parametric EQ (using 3 twin knob dual pots for the range) is where the secret sauce lies, especially when the EQ zones cross over. Magic, on mono CR-78 beats.



As this (not my) video shows though, those weird twin knob pots are a bit of Achillies heel if they aren't working right...

Does anybody know, is Yamaha DR100 related to Yamaha R-1000?
It sure looks like it. Same 4 presets buttons + same tri-band EQ (although fixed frequencies).

It is STEREO though...

https://reverb.com/item/67757273-yam...half-rack-unit

Vesta Fire RVD 901 (if not suggested yet).

I just ordered Yamaha DR100.
I will report if its anything of use/fun

make sure to try short/early reflection programs with low aux return to give body to drum/percussive sounds without sounding like room reverb. TG-33 with similar era algorithms did that to good effect. I have always meant to pick up DR-100 or there’s another similar Yamaha half rack/desktop one.

I have the Yamaha half rack graphic eq. Sounds crummy af like it came off a cheap hi-fi. Got a few ok distortions out of it but needed another band or two plus more dB gain/cut.

what about the old Digitech stuff?

I've been eyeing those myself. I had an MSP4 a long time ago and it was very atmospheric although a pain to edit. The Digitech effects unit included in the Kurzweil K2000, which can be used with external audio as well, sounds really cool and I believe is functionally identical to the DSP-128.

Digitech also made a bunch of digital delays that sound good and could be used for reverb-like short echo.

The Behringer FX-2000 is back in stock everywhere (disappeared in the covid era) it's an excellent multi-FX unit with good reverbs and delays. Dirt cheap and programmable via MIDI.

hey that looks just like the DSP2024 that i got for 24.99eu down the cashconverters.
great for the money, but it's a bit noisy. what is the FX2000 like for that?

Some programs are noisy (some of the distortions for instance) but the reverbs, delays and modulation effects aren't noticeably noisy.

I finally got the unit. Brief review of Yamaha DR100:

-Sounds sort of spring-ish.
-Not stereo! L and R channels are summed to mono the fed into stereo reverb algorithm.
-Very usable EQ controls, can drastically reshape the effect .
-Pretty dull, not much happening above 6kHz.
-Not noisy at all.


It's sort of reverb that doesn't sound impressive (in isolation) on it own, but sits surprisingly very well in a mix.
But expect more of a norrow 60/70ies spring, lofi hall sound, not wide 80ies bright lushness.

Cheers

Dont know if this is lo-fi enough but some of the reverbs has some strage grains, dont know if its because i run it on 9volt instead of 10?

Fun thread .. I know it isn't a rack unit, but I picked myself up a like new behringer k450fx for $80 off Craiglist, which I couldn't turn down. I'm gonna use it as a utility / keyboard / synth amp for studio and around the house ...

It has 100 fx presets, but I was sad to learn that only reverb , and the initial one it seems? plays back even if I try to select others. Oh well, that reverb is really cool, very characterful, might use it as send fx in my hybrid studio setup at some point.

Pretty cool how crappy / cheap hardware reverb / fx units still sound so much more life like / interesting / wider and deeper than even top notch reverb plugins. Really says something!