Anybody got a spring reverb layout ?

[Austin73]

Hi everyone,

Now at the stage of building some stuff from the organ guts I have. I have a single spring reverb unit and wondered if anybody had any ideas on a layout and voltage supply for it . Ideally I want to make either a noisy cricket or little gem/ruby and and it on to that but just wondered also if the 9v was too low to power it?

Any help in the matter would be really appreciated

Cheers

Aus

[geir_helgi]

*bump*
I just got a great sounding single-spring reverb from a Yamaha C 55-n home organ..
I know single-spring reverbs aren't favoured, but this one sounds super cool.

I was just wondering if someone knows, what the OP asked; how much power they typically need? (if any?)
It has to small "things" (coils?) on each side (red+green), and is marked IN / OUT, each in+out wire has two wires in them (ground+audio? or audio+power?)
I tried connecting jacks on each end (input on AUX send) and the output onto a seperate channel with lots of gain, I only got a dry sound going through it.. ?

Anyways, I just don't have a DMM which would be the easiest way

[grathan]

Here is the craig anderton one.

http://bp1.blogger.com/_whBlZw-dHjU/RaArB06scaI/AAAAAAAAAAk/YbgMvifhBZs/s1600-h/stage_center_reverb.jpg



woops, my bad. Not sure about the power.

[ballooneater]

http://sound.westhost.com/project34.htm

May be of some use to you.

[Yazoo]

I've built the Westhost reverb layout. I originally tried the Stage Center Reverb but it didn't work for me. I used an Accutronics 8DB2C1B tank which may not have been suitable. I've got to be honest, I can build the circuits but I don't have the electronics know-how to adapt them if they don't quite work for me. I used a 12 volt bipolar supply I already had but I am going to build a 15 volt supply as recommended. I understand the part about choosing a capacitor to filter out lower frequencies and I've added a socket on the board so I can try different ones out.

The problem I am having is with the R5 resistor immediately before the reverb pan input. I used a 2K trimpot so that I can adjust it. The suggested start value is 47 Ohms. The reverb pan used for the Westhost article has an input  impedance of 1700 Ohms with a DC resistance of 173 Ohms. My reverb pan has an input impedance of 310 Ohms and a DC resistance of 36 Ohms. What kind of resistance should I set R5 to? Is there a formula for this that even I could understand?

[zeta55]

Here's a soundclip from http://sound.westhost.com/project34.htm I built, as I remember mine had a DC resistance of about 170 ohms.
http://www.zeta-sound.se/Reverb/byp_mucho_mindre.mp3

/Krister

[solderman]

I don't know how your one spring unit will sound in this or what in/out impedance it has but this is my favorite spring reverb circuit.
http://solderman.fatabur.se/Reverb.html

[mat]

Here's a soundclip from http://sound.westhost.com/project34.htm I built, as I remember mine had a DC resistance of about 170 ohms.
http://www.zeta-sound.se/Reverb/byp_mucho_mindre.mp3

/Krister

Great sound ! Do You have a layout/pcb-file for the project ?

mat

[zeta55]

 I built it on perfboard, but later on I did do a layout of it, so it not tested.
Though I wont share that layout online, pm me.

/Krister