Adapter+teleconverter+lens without aperture ring? Still works?

Hello,

For just 15€ I can get a used Soligor 2x teleconverter (edit: model is Soligor 2x MC7) to experiment with the following (cheap) 70-300mm lens I have: Minolta AF 75-300 F4.5-5.6 D

A also cheap adapter is under way and I should get it within a week.

Image quality is not really of importance right now; this is just experimenting various focal lengths with the least money possible, with my Nex-6.

• Question is: will I be able to control the aperture (manually) with this setup?

Because this lens doesn't have an aperture ring...

The adapter under way has an embedded aperture ring.

As I understand it, the teleconverter would fit between the adapter and the lens right, and there are no mechanisms in the teleconverter to transmit the settings of the aperture from the adapter to the lens?

Thanks in advance!

Dimitri