Polarity is for DC direct current power supplies, AC alternating current power supplies have no Polarity. AC is needed for Quadraverbs so be sure to check, if looking for a power supply and it has a polarity then its a DC power supply and not a good idea…
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Yeah, EPS replied to me saying it needs an AC PSU; I wish I’d bought the full replacement rather than just the barrel adapter as I can’t find any 9VAC PSUs in the box of spares yet.
Hey Quads! has anyone found a good place to find patches for the GT? and what is the best editor to use to manipulate the MIDI functions via software, the midiquest app is almost 500,- buckeroonies, a bit steep for a little bit fiddlin around, i have been scavenging around and would like to make a small google drive library for anyone and everyone looking for patching stuff, since the resources are getting a bit scarce and hard to find.
Anyways awesome to see a community still with a beating heart for these old but gold machines!
Cheers!
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Midi quest 1 is 50 bucks…
Whats wrong with mapping a midi controller? If you’ve got one knocking around that will do it. Save the patches on the Quad then sysex dump them.
Im not an editor type of person really, it would probably take me longer to set one up than it would to just make the patches on the quad.
I will definetly do that ofcourse, i was just curious if there were such sites or libraries around is all, apreciate your time!
Thinking of getting the Midiverb 2 next. I’m loving the Quadraverb (1+), as other people have said, it sounds part of the texture, rather than being ‘on top’. Looking forward to messing about with the resonators and (I imagine) gritty sampler…
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Midiverb 2 to me is better than the Quad. I have owned both. Midiverb is just super simple, find the preset you like and then lock it in as the default- done.
Quad requires a bit more work, especially the plus since it has overdrive on a lot of presets for guitar. Still sounds great, but I moved back to software. Once I made a 1:1 copy of my midiverb settings in Goodhertz MegaVerb,I was sold. Freed up some I/O as well.
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I completely understand the logic, but I do love messing about with boxes, wires and generally making my life a little harder 
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A while ago I downloaded a spread sheet with info on various Alesis effects, and I had some time on my hand today, so I added some missing effects, researched missing pieces and added a link to a review of the device where possible.
It includes all Nano-, Micro, Midi- and Quadraverbs, and The Wedge, sorted by family and date. Maybe it is of use to somebody here.
Alesis Effects Comparison-Comparison.pdf (209.0 KB)
In the process I found a few links that might be of interest:
Manuals, other documents and firmware images for all Quadraverbs are available at quadraverb.nl.
Firmware images of Midiverbs etc. are available from dbwbp.com (free) or from monotanz.de (paid). Both places have lots of firmware for other synths and effects as well. Monotanz will provide you with the file and the type of EPROM required, so that you can have a service like buyICnow.com program the EPROM for you.
In the Monotanz product description you will also see the changes in that firmware version, if you’re curious whether or not an upgrade will be worth it.
Firmware in EPROMs is available from vintagesynthparts.com (Italy) or from a Reverb Shop in Candada for ·€15-20 plus shipping. Monotanz + buyICnow will probably be less than half that price.
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Why are Midiverb 2 units more expensive than 3 and 4? It’s like 2x in Germany. Got no clue about the specs, but I am sure someone here knows the answer. 
When you check the sold items on Reverb, you will find that you can still get one in good condition for €50 occasionally. Also in German classifieds, especially local pickup only. Not every seller on Kleinanzeigen checks prices, or is aware of the hype.
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This site has a large repository of EPROM firmware ROMs for many vintage effects and synths including Alesis.
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Ah, that’s the first of the two firmware sites I’ve linked to, but apparently I mistyped the name (the link said dwpb.com, that’s fixed now)
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Cool emulator of the MidiVerb
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It’s because of the “Bloom” algorithm. Google midiverb ii bloom and you’ll see why.
This page is the first result and has the distinction of being Valhalla. To quote from that page:
Apparently My Bloody Valentine used the Bloom patches a lot – recent photos of Kevin Shields’ rig show two Midiverb IIs in there.
So there’s some fame. Internet is adamant that the algorithm is not present on any other Alesis units than Midiverb II.
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Thanks for clearing this up, so its just about a famous algo… 
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I need a reverb unit.
Something like the sound on first half of Selected Ambient Works, but also pushable to longer ‘ambient’ trails would be lovely.
Should I just get a smelly old QV off eBay, or would a newer pedal do the job? The Strymon Blue Sky or Eventide Black Hole maybe.
Difficult to ascertain via YouTube as most demos are guitar based.
Everyone needs a QV; they’re entirely unique. Longer ambiences can be trickier to acheive though, or so I’ve found thus far.
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If you crank the decay all the way up, eq the signal pre reverb, and be sensible with what you feed it, long lush reverbs are easy.
Get that chorus in there too.
It sounds like real space, rather than an effect stuck on top of a sound.
I like my QV. I use it on everything.
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Yes
Watch this
And this
And this
Best reverb ever made. 9 fricken op amps.
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