ProAc ER1 Subwoofer - Single – No Longer Available

Powered Subwoofer

Product Description

For ProAc, the development of a sub-woofer has only recently become a priority. In our opinion early designs blurred detail and imagery in stereo systems. We felt that it was only with the advent of the more compact active sub-woofers with their own electronics and filters that matching capability and sound quality were improved, but we still did not feel the need to produce our own unit.

This first ProAc ER One (Equalised Reflex) subwoofer is an active unit with its own filters and internal amplification. Development has been a lengthy process. Our initial research indicated that drive unit cone material was a main contributing factor to sub-bass colouration. So a new carbon composite cone, developed a few years ago specifically for our Response and Future ranges, provided the perfect solution.

Characterised by a clean and uncoloured bass output, this new material was developed into a ten-inch cone specifically for the ER One. It was immediately found to have the necessary rigidity and internal damping to produce a clean and natural sound, complementing the output of the main loudspeakers rather than detracting from it. The drive unit is mounted in a compact enclosure of high rigidity and thickness, with damped inner walls and loaded by our unique equalised reflex port, as developed for our Response and Future models.

Naturally with the compatibility of the cone material and other design factors, this unit has proved to be especially successful with our own home theatre system, but extensive testing has also assured its effectiveness with other high quality home theatre and two-channel systems.

The ER One is a true ProAc thoroughbred and immediately raises the game in sub-bass performance; for an extra octave of bass in a two channel hi-fi system or explosive weight and authority in a home theatre system the ER One is the one to beat.

Product Specifications

Condition New
Active or Passive Active
Monitor Application Sub
Number of Speakers Single

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I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
Matthew R.
I had two Grammy wins this year - Ray LaMontagne & Carolina Chocolate Drops. Both made with help from Vintage King!
Ryan F.
In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
Martin C.
This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
Phil T.