Mounting speakers on Wall - no stud

Hello

I have bookshelf speakers I wish to mount on my wall as surrounds for my home theatre. Where I need to place them I do not have access to a stud. The speaker and bracket weigh about 9kgs but they do come out up to 40cm from the wall when swiveled. I have come up with 3 different options. Your input would be greatly appreciated.

The part of the bracket that mounts to the wall is 25cm high. https://www.btechavmounts.com/product-range/products/bt77

Option 1. Hang the speakers using 2 or 3 Wall Toggles. I believe this should hold but not real confident about this option because of the amount of weight pulling away from the wall.

Option 2. The noggin would be about the right height that I need so could I use 1 or 2 wall toggles and also screw into the noggin. This is the option I'm really not sure about. Should a noggin be used in this way. I have only ever screwed into studs to hang heavy items.

Option 3. Cut hole in wall. Install additional noggins to then screw into. This means a lot of extra work patching and painting.

Any experiences or advice would be great. thankyou

If you use 3/8"+ inch metal toggle bolts, you can easily support 20 kg+ at one point with just gyprock only.

I have hung a heavy mirror on a wall without a stud just using toggle bolts and it did a great job. The only thing with these speakers that I'm not sure about is the fact that they extend out from the wall by 40cm. Is this type of weight (I think it's called tensile weight when the weight is being pulled away from the wall rather than straight down?) going to have an adverse effect using plasterboard fixings only? thanks

If you can pick up a noggin then I'd use that for the top fixing. That way the tension is taken through a solid fixing. Realistically that would be enough to take the full weight of the speaker and bracket.
Any screws at the bottom are taking more sheer force and are more for location so even a wall mate would do.

You can put two bolts in the bottom of the fixture as they will be having more load. Otherwise, it will be similar.