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Belton BTDR-1H, reverb unit

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N_Cook

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Jan 26, 2017, 9:15:59 AM1/26/17
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First one I've come across, anyone know what is inside? too big to be
bucket-brigade and regulator and a couple of opamps.
i don;t believe this supposed schematic
http://blogs.yahoo.co.jp/clubman501/60421206.html
7 pins to the outside world and pic is correct of this "Digi-log reverb"

N_Cook

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Jan 26, 2017, 10:48:00 AM1/26/17
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that .jp is an external cct

MJC

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Jan 26, 2017, 10:50:48 AM1/26/17
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In article <o6d07m$3g4$1...@dont-email.me>, div...@tcp.co.uk says...
I have a vague recollection of coming across a reverb unit in the 1970s
which had one of more long springs inside. Worked a bit like those
ancient mercury delay line computer stores. It was certainly big!

Mike.

N_Cook

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Jan 26, 2017, 10:57:25 AM1/26/17
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A simple test, next time I power up. Tap the casing and see if output
goes boioioioioing.
I wonder if you culd make a small springline reverb, to compensate for
presumably tinny sound, seriously emphasise the bass and de-emph.
There are some half-length tanks with send and receive at one end and a
low-damp suspension at the far end. Surely it would be possible to
suspend a spiral spring in aero-gel or somesuch

N_Cook

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Jan 27, 2017, 7:44:26 AM1/27/17
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solid-state, no boioioioioing

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