Hi Folks
A very long time lurker here.
Over the years you folks have been so helpful by taking the time to post stuff.
I am getting towards the end of an Oracle Delphi repair/restore.
Mine is a Mk II, or so it says on the instruction sheets (Im the original owner).
The one thing I note when reading about Oracles is the total confusion about versions of the Delphi and upgrades,
especially with respect to the motor and how the suspension is adjusted.
I’m here simply to post some photos of what my MK II came with as far as motor system is concerned. It may be useful, it may not.
The serial number of the turntable is 7955 with a build date of September 1986.
The motor is a DC motor and is supplied by an outboard AC adapter (120VAC in and 27 VDC out )
and another lightweight black box called a Dynamic Isolator.
The AC adapter is plugged into the wall and the output of the adapter (27 VDC) goes to the input of the Dynamic Isolator.
The output of the Dynamic Isolator is then plugged into the rear of the turntable where the motor is located.
The motor is covered with a black plastic cover. At the rear is the aforementioned place to connect power.
There are also two trim pots where one adjusts speed for 33 and the other adjusts speed for 45.
Next to those trim pots is a knob that adjusts overall speed.
OK, so the pictures tell more of the story with closeups of the pcb under the plastic housing.
Hope this is of some use.
Best regards
Curt
A very long time lurker here.
Over the years you folks have been so helpful by taking the time to post stuff.
I am getting towards the end of an Oracle Delphi repair/restore.
Mine is a Mk II, or so it says on the instruction sheets (Im the original owner).
The one thing I note when reading about Oracles is the total confusion about versions of the Delphi and upgrades,
especially with respect to the motor and how the suspension is adjusted.
I’m here simply to post some photos of what my MK II came with as far as motor system is concerned. It may be useful, it may not.
The serial number of the turntable is 7955 with a build date of September 1986.
The motor is a DC motor and is supplied by an outboard AC adapter (120VAC in and 27 VDC out )
and another lightweight black box called a Dynamic Isolator.
The AC adapter is plugged into the wall and the output of the adapter (27 VDC) goes to the input of the Dynamic Isolator.
The output of the Dynamic Isolator is then plugged into the rear of the turntable where the motor is located.
The motor is covered with a black plastic cover. At the rear is the aforementioned place to connect power.
There are also two trim pots where one adjusts speed for 33 and the other adjusts speed for 45.
Next to those trim pots is a knob that adjusts overall speed.
OK, so the pictures tell more of the story with closeups of the pcb under the plastic housing.
Hope this is of some use.
Best regards
Curt
Attachments
I have the same PC board with a MK III. The dynamic isolator is a capacitor bank. I believe the motor is a German Pabst . I replaced the resistors with 1% metal films, low value tantalums with Wima polyesters etc
Hi David
You know, at first I thought, naaah, no way that bell cap can weigh much.
I have not had it in my hands by itself but I did take another look at it tonight
and you can tell, it definately has some weight behind it.
So yeah, my guess is that it does have some flywheel effect right at the motor spindle.
Curt
You know, at first I thought, naaah, no way that bell cap can weigh much.
I have not had it in my hands by itself but I did take another look at it tonight
and you can tell, it definately has some weight behind it.
So yeah, my guess is that it does have some flywheel effect right at the motor spindle.
Curt
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