Some point to consider in general:
- Be very careful about logos, text and fonts. Couldn't find the thread just now, but there is one with a lot of vintage amplifiers at ASR, and scores of them are aesthetically ruined by text and logos. A bad logo and poor fonts will ruin the best of designs. There is no rescue from bad, fonts and poor logos with wrong size and proportions.
- All products needs to stand out one way or another, and manufacturers are looking for aesthetics which serves as an unique brand identifier selling the product. Nail it, and there is hardly need for text, and the logo can be subtile. Get it wrong, and you're done. Brand identifiers makes or breaks products.
- Get the proportions aestethically right whatever that is. Get it right and they will fit in most environments, get it wrong at they will be off everywhere.
- Honest materials is always an advantage. If it looks like a rock it should be a rock, if it looks like wood veneer it should be wood veneer. If it looks like wool it should be wool.
- Modern today is old tomorrow, and that's fashion. Designed to sell today, designed to be replaced tomorrow. Timeless may never be modern, and it may never become unfashionable.
As for your renderings, I think you are off to a rather good start. Perhaps there are 2 considerations I would have made. The first is the "transition" between front and sides. One suggestion could be to have an visible edge not only on the sides, but top bottom too. That edge may be 90 deg, 45 deg, 30 deg, or e.g. 90 deg breaking into 30 deg. Then a slight gap between the edges and the sculptured front plate for a nice shadow / 3D effect - making the front sort of float. The edges of the frontplate may be in parallel to the edge of the sides, or not. Getting such suggestion right would depend a lot upon proportions and execution, but I suspect it would have made your sculptured front even more of a feature.
Here is one simple example - not the best - but it illustrates the point:
The other suggestion I would have considered are the element covers.
Have a look at the 1528 and 1610 towers by Arendal Sound. Whether one likes the design of the 1528 or not, the execution - integration of the elements into the front - is well thought out. Not so for the 1610, in particular with the covers on. It's bad without, and terrible covered. Those would never have entered my living room.
arendalsound.com
I would have had a look at Ascilab F6B and considered whether their take on the covers is slightly better than your renderings. Yours are not bad at all, but perhaps Ascilab does it slightly better. I probably would have liked it if yours were recessed and the front of the covers alligned to the surface both on the side and in the front.
As for colors, black/charchoal plays nicely with a wide variety of wood veneers, from soaped oak to dark wood veneers. Whiteish can be nice too, but the specific choice would make a lot of difference. The color of the sides of the pictured Ikea speaker isn't bad, and e.g the whiteish Triangle Boreas aren't quite right in my opinion. I believe it's challenging to get the whiteish tones right.