Accessit Reverberation Unit – Operating Manual

Scan of the manual for the British-made Bandive/Accessit spring reverb – click either image below to go the pdf. These are great reverbs (mono in, stereo out) and also overdrive extremely well. A clever piece of British design.

Also here’s the circuit diagram, as pictured on top of the reverb tank part of the unit.

More Spring Resources

from around the site:


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Lords Of The Springs – Tony’s Premier Guitar Article

My first piece for Premier Guitar on the subject of vintage spring reverbs, with particular emphasis on less-common units: definitely firmly in Soundgas territory. 


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Which Vintage Spring Reverb is Best?

We happened to have a stack of vintage spring reverbs all in one place so thought we'd put them all against each other & produce: The Soundgas...


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Gear History

Grampian Type 636 – Believe the hype…

Grampians: some history and technical information about these superb, legendary machines. If you are looking to buy a Grampian or have one to sell in any...


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The Hawks Have Landed

Mid-seventies Japanese manufacturer Hawk Technical Works Co Ltd put out a range of tape echoes and spring reverbs branded Mirano and then Hawk aimed squarely at domestic...


Biamp SR/240 Reverb Manual

Scan of the manual for the rare Biamp Model SR/240 Stereo Reverberation System.


Grampian Reverberation Unit Type 636

A growing collection of information about the Grampian 636: history, schematics, manuals, sound & video clips; plus our Soundgas Type 636 project to recreate this iconic...


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