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Wednesday, June 15, 2016
Rebote Delay - 1590A
For those of you who didn't want 1590A week to end last month, here's another mini layout for you. It's an early iteration of the Rebote Delay that features a simple JFET stage at the input, followed by the PT2399 delay stage. Simple, yet effective. Note: mind the 3 electrolytic caps on their sides in the middle of the board. Here's the schematic for reference.
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No Time knob?
ReplyDeleteSame thing as the Delay knob
Deleteno level/mix knob
DeleteThat wasn't introduces till the Rebote 2. Different circuit design.
DeleteMercy please
ReplyDeleteVery nice!!! Congratulations for effectslayouts.blogspot!!!
ReplyDeletecouldn't the Mix knob be added simply putting a volume knob at the delay chip output?
ReplyDeleteThat would just be a volume knob which isn't really necessary with this. It a PT2399 delay like later Rebote iterations or the Deep Blue Delay, the mix knob essentially blends in clean tone with their input and output buffers. This one uses a jfet gain stage to keep the volume at unity. A mix control could be added to this circuit, but probably not without adding some sort of buffer. You could try adding a blend circuit, but that would be difficult with this PCB, not to mention difficult to cram into a 1590a.
Deleteever think about making the circuit to fit 1590B?
ReplyDeleteI'm tired of my DBD clone, really.. :D
Coz I think it would be interesting to have two delay pedals in a box, just like what I did to my Em-drive and Paramount.
Deleteand yes, this one sounds better than DBD to my ear
DeleteIf it fits in a 1590A it'll fit in a 1590B no problem.
DeleteIt's working but volume is waaaay too low. Any idea?
ReplyDeleteUpdated: Changed the tranny to a 5458 and it works great! Mark it as verified sir, thanks for your amazing job.
ReplyDeleteCool. Glad you got it working and thanks for verifying!
DeleteThis comment has been removed by the author.
Delete
ReplyDeleteCan I use this blend without buffer? Thank you
http://4.bp.blogspot.com/-72ZC_Xv7EOI/VL-6HvrrnYI/AAAAAAAADmc/jzuB6tlsHsM/s1600/Simple%2BFET%2BBlender.png
You can use that blender, though it will be somewhat difficult with this layout.
Deletecan i use it in my bass guitar?
ReplyDelete
ReplyDeleteIt works fine, but as the repetition time increases, it becomes noisy. Any idea to check? Thank you
That's just kind of the nature of the PT2399. You can try different ones to see if there's improvement, but the longer the delay time, the more lo-fi it becomes.
DeleteWhat is meant by Q1 and REG1 ?
ReplyDeleteQ1: JFET 2N5457/2N2458
DeleteREG1: 5V VOLTAGE REGULATOR 78L05