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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Belton BTDR-1H, reverb unit
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" |
#2
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Belton BTDR-1H, reverb unit
On 26/01/2017 14:15, N_Cook wrote:
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" that .jp is an external cct |
#4
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Belton BTDR-1H, reverb unit
On 26/01/2017 15:50, MJC wrote:
In article , says... 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" 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. 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 |
#5
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Belton BTDR-1H, reverb unit
On 26/01/2017 15:57, N_Cook wrote:
On 26/01/2017 15:50, MJC wrote: In article , says... 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" 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. 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 solid-state, no boioioioioing |
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