Why so few speakers with Passive Radiators?


Folks,

What are your thoughts on Passive Radiators in speaker design?

I've had many different speakers (and like many here, have heard countless varieties outside my home), from ported, to sealed, to passive radiator, to transmission line.

In my experience by far the best bass has come from the Thiels I've owned - CS6, 3.7, 2.7 which use passive radiators.  The bass in these designs are punchy yet as tonally controlled, or more, than any other speaker design I've heard.  So I figure the choice of a passive radiator must be involved somehow, and it makes me wonder why more speaker designers don't use this method.  It seems to give some of both worlds: extended bass, no port noise, tonally correct.

And yet, it seems a relatively rare design choice for speaker manufacturers.

Thoughts?
prof

Showing 1 response by goledeniers

I have had virtually every flavor on the market, since 1956. Planar, electrostatic, loaded, ported, open air. It is my feeling that, while the loaded are power shy I find the ported boxes offer some Chuffing. I find this disconcerting. Currently I am happy with the 3 individual enclosures per side, 2-6 inch Scan speaks per box, for a total of 6 small woofers per side to be quite rewarding. Quick, powerful,authoritative and natural. No lumbering giant cone, no vent. I may stay with this configuration forever.