1. Dump the THX name - PERIOD. When you present a well respected audio moniker on your lower priced product then you aren't only setting yourself up for ridicule, but you are in a position to be sued by the folks over at THX laboratories.
2. Get your product reviewed. Don't just send out press releases, but get your speakers to sites (like this) and to magazines for some critical review. If you believe that you offer a valuable product for the money, especially when considered to other products that cost the same or MORE, then you should not be afraid to do that.
3. Your website is not very informative and is very "used cars salesman" in feel.
When someone clicks on 'SPEAKERS' then start with product information. Detailed photos, frequency response, the works. Show more images of each and every speaker. Not of packages, but of the individual products. Show a smaller photo of each piece and allow people to really read the details of that product. Like a small pic of the center channel, then when the user clicks, they really get the details and can see multiple photos of the entire product - closeup! GOOD PHOTOS!!!
If you are selling through your site, put the selling section in a different location from your informational section. Put the packages together and talk about the customer savings for those packages.
4. On your site, you don't have facility or build photos. There is no contact address, there is no contact phone number. Besides a web address (to hide behind) how to people actually get in touch with you or have any reason to believe you are serious or your product isn't a waste of money?
5. If your product sucks - prepare for it to not sell no matter what you do. If it is excellent, then it may take a couple of years before it gets much recognition, but one of the ways you will get it is by going to trade shows. CES, CEDIA, and Infocom are all arenas where you can show your product off.
6. If you believe your product to be excellent, then picture it with other great components. The A/V receiver you have pictured almost looks cheap compared to a nice Denon, Yamaha, or a real exqusite piece like a Meridian or nice McIntosh receiver/amp.
7. Press releases are hype, reviews are real. Get your product where it needs to go for reviews and make available hi resolution, high quality photos for press and publications.
The white van feel comes from a lack of these things. The feeling that you are not available to support your product and that your product is overpriced despite the low cost. I will spend twice as much for half the quality from a manufacturer that I believe will be there for me should I have a question about the product. That extra peace of mind is very valuable.