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 Forum index » DIY Hardware and Software » Circuit Bending
Ordered a digital reverb.
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Grumble



Joined: Nov 23, 2015
Posts: 992
Location: Netherlands
Audio files: 27

PostPosted: Wed May 08, 2019 12:51 am    Post subject: Ordered a digital reverb.
Subject description: transform into eurorack
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So I ordered this:
digital reverb
It uses a PT2399 and has a microphone input.
(Only 4 € Shocked )

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ixtern



Joined: Jun 25, 2018
Posts: 94
Location: Poland

PostPosted: Wed May 08, 2019 3:44 am    Post subject: Re: Ordered a digital reverb.
Subject description: transform into eurorack
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Grumble wrote:
So I ordered this:
digital reverb
It uses a PT2399 and has a microphone input.
(Only 4 € Shocked )

For the voice maybe it will be good but I don't like PT2399 reverb.
I've built (perhaps the PT2399-end-of-evolution-line) eurorack reverb module from Synthrotek ("verb") having 3 x PT2399s and although it has deep heavy sound, sound quality is not I would expect.
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Grumble



Joined: Nov 23, 2015
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Location: Netherlands
Audio files: 27

PostPosted: Wed May 08, 2019 4:12 am    Post subject: Reply with quote  Mark this post and the followings unread

But what to expect for 4€ Shocked Laughing
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ixtern



Joined: Jun 25, 2018
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PostPosted: Wed May 08, 2019 1:04 pm    Post subject: Reply with quote  Mark this post and the followings unread

Grumble wrote:
But what to expect for 4€ Shocked Laughing

Yes Smile
I've bought a PT2399 module from aliexpress also:
https://www.aliexpress.com/item/PT2399-Microphone-Reverb-Plate-Reverberation-Board-No-Preamplifier-Function-Module/32851343141.html?spm=a2g17.10010108.1000001.12.2b531a7bJz2Uwj&isOrigTitle=true
for about 3$ but until now have no desire to do anything with it (after "verb").
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Grumble



Joined: Nov 23, 2015
Posts: 992
Location: Netherlands
Audio files: 27

PostPosted: Wed May 08, 2019 2:26 pm    Post subject: Reply with quote  Mark this post and the followings unread

damn, missed that one Embarassed
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AlanP



Joined: Mar 11, 2014
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PostPosted: Wed May 08, 2019 9:22 pm    Post subject: Re: Ordered a digital reverb.
Subject description: transform into eurorack
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Grumble wrote:
So I ordered this:
digital reverb
It uses a PT2399 and has a microphone input.
(Only 4 € Shocked )


You're better off working up a circuit with a Belton Brick -- one PT2399 doesn't cop a good reverb. (The brick has 3 internally, SMD.) Tom Whitwell from Music Thing Modular has developed a reverb module that can use either the brick, or a traditional spring tank.

http://smallbear-electronics.mybigcommerce.com/belton-btdr-2h-reverb-modules/

https://musicthing.co.uk/pages/spring.html

(There is a version 3 brick that has stereo out, and adjustable decay. I linked v2 as most designs out there use this. Brian Neunaber had design input for this series, IIRC.)
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ixtern



Joined: Jun 25, 2018
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PostPosted: Wed May 08, 2019 11:06 pm    Post subject: Re: Ordered a digital reverb.
Subject description: transform into eurorack
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AlanP wrote:

You're better off working up a circuit with a Belton Brick -- one PT2399 doesn't cop a good reverb. (The brick has 3 internally, SMD.) Tom Whitwell from Music Thing Modular has developed a reverb module that can use either the brick, or a traditional spring tank.

http://smallbear-electronics.mybigcommerce.com/belton-btdr-2h-reverb-modules/

https://musicthing.co.uk/pages/spring.html

(There is a version 3 brick that has stereo out, and adjustable decay. I linked v2 as most designs out there use this. Brian Neunaber had design input for this series, IIRC.)

No frequency range in datasheet and somehow limited dynamics for ver 2 and 3 suggests rather guitar-oriented delays, not synthesizer. But you can say this about every PT2399-based module, so time to move to DSP-based delays, I think.
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Grumble



Joined: Nov 23, 2015
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PostPosted: Wed May 08, 2019 11:08 pm    Post subject: Reply with quote  Mark this post and the followings unread

I already have designed and built a module with 3 PT2399's

CLICK HERE

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ixtern



Joined: Jun 25, 2018
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PostPosted: Thu May 09, 2019 4:45 am    Post subject: Re: Ordered a digital reverb.
Subject description: transform into eurorack
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Grumble wrote:
So I ordered this:
digital reverb
It uses a PT2399 and has a microphone input.
(Only 4 € Shocked )

I see there is a panel for your board:
https://nl.aliexpress.com/item/Single-power-PT2399-NE5532-Karaoke-board-Microphone-panel-it-is-only-panel-no-others-please-attention/32816008523.html?spm=a2g0z.10010108.1000023.2.565f1cf8U7A4yw

Unfortunately it is not eurorack sized.
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ixtern



Joined: Jun 25, 2018
Posts: 94
Location: Poland

PostPosted: Thu May 09, 2019 5:24 am    Post subject: Reply with quote  Mark this post and the followings unread

Grumble wrote:
I already have designed and built a module with 3 PT2399's
CLICK HERE

I've forgotten about this one. Very nice design.
But youtube demo is not very helpful - better is to play some sequence without delay first and with delay next (although it requires more work perhaps) to compare differences. Additional effects are only obscuring delay impact on final sound.
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