Passive soundbar


Looking to de clutter and move my current second system to become a third system and in doing so am looking to replace my pioneer elite Andrew Jones Dolby Atmos L/C/R towers and center with a passive sound bar being driven by marantz 7007 receiver. I have multiple zones and things hooked up so a powered soundbar is not an option. Guessing I will need to add a sub or two as well given physical limitations of the sound bar.  I have about 43” width and somewhat varying height and depth let’s say 6 to 8 inches high and 7 deep. Not looking to break the bank but doesn’t seem like there are many cheapish options out there.  Am I missing a quality speaker somewhere ?  Would like to keep under $500. 
esthlos13
I don't think there is anything out there which is that cheap.  Probably your best bet is to get three matching "center channel" speakers and line them up.  The other problem you has is that your width is limited to about 43".  Most center channels are at least 20-21" which would require about 63" width.

You could try to find something small, such as Cambridge Audio SX-70 center channel speaker, which is 14-1/4" wide (three would require 43" exactly).  They are $180 each from Crutchfield.

There's only one truly passive soundbar that I know of.  Legacy Audio has a "Soundbar" passive speaker, but it's 48" wide and going to cost around $1300-1400.
If your Marantz 7007 receiver can setup without a center channel speaker, you can get two matching "center channel" speakers instead of three, use it as left and right front speaker as @auxinput suggested.

https://www.crutchfield.com/p_107SIGS30/Polk-Audio-Signature-S30-Washed-Black-Walnut.html?awcp=&...

Interesting suggestions. I see Dayton audio has a relatively cheap center and 10” powered subs for just a few hundred- anyone have any experience with those?