Belton BTDR-1H, reverb unit

[N_Cook]

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]

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

 

[MJC]

In article <o6d07m$3g4$1@dont-email.me>, diverse@tcp.co.uk 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.

 

[N_Cook]

On 26/01/2017 15:50, MJC wrote:

In article <o6d07m$3g4$1@dont-email.me>, diverse@tcp.co.uk 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

 

[N_Cook]

On 26/01/2017 15:57, N_Cook wrote:

On 26/01/2017 15:50, MJC wrote:
In article <o6d07m$3g4$1@dont-email.me>, diverse@tcp.co.uk 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