Uni 5" Feastrex Fullrange Monitors (cabinet only or complete speaker)
Uni 5" Feastrex Fullrange Monitors (cabinet only or complete speaker)
Uni is a Japanese made single driver monitor. Our 40 liter bass reflex cabinet is compatible with any Feastrex 5" driver. I have tuned the design to achieve balanced performance from a compact package.
The official Feastrex enclosure (F-60, about 60 liters) are large floorstanders that are very pleasant overall, however in my opinion, they do get a little boomy in the lower mids in order to extract lower bass cutoff without using a subwoofer.
So instead, Akiyama-san’s alternative original design, the triple port bass reflex design, at about 30 liters was instead the starting point of the Uni.
The Uni was designed with Dayton Woofer Tester III to measure the drivers and WinISD software to design a starting point for enclosure prototyping. The enclosure and port were then refined through further physical iterations, like all Blumenstein designs.
The resultant Uni are much smaller than the F-60, and the sound is much tighter and more appropriate for handoff to a subwoofer or two. The internal bracing of an Uni enclosure is an appropriately heavy duty adaptation of what goes inside an Abby II, Triton, Orca, etc.
I personally own two entry level Feastrex models - NF5ex field coil as well as the alnico the D5nf.
I understand these drivers well having built some of the drivers myself and listening to many more during and after my apprenticeship. I provide personalized support to help you achieve your sonic goals. Feastrex has a long lineage as a brand, currently on it’s third owners. (Takeshi Sano from Exact Audio began making drivers commercially at age 14 in the 1940’s. Yukihito Akiyama purchased Exact Audio and renamed it Feastrex in early 2000’s.
Feastrex is the most exotic, highest-end full range driver brand in the world. There is no other driver brand that is as sonically driven by nature in sourcing or making all their own parts.
Original MSRP for Feastrex drivers range between $4500/pr for the D5nf up to ~$45000 for the D5e Type III (and up from 8500/pr. for D9nf up to ~$80,000/pr for the D9e Type III 9” models). (email to inquire about 9” sizes and enclosures)
Production for new Feastrex drivers themselves is currently being retooled. A new owner of Feastrex and Akiyama-san’s son are currently in the process of moving production to a town nearby Hiroshima.
Blumenstein Feastrex Uni fullrange speaker enclosures are each custom built to order and take approximately 6-8 months to complete.
Feastrex Uni 5” cabinet orders are considered fully custom. We do not offer refunds under any circumstances. All sales are final.
Please note the Uni cabinet pictured above are an older pair of NF5ex (field coil) drivers in rear ported cabinets built in Natural Bamboo. However, all new orders will ship default with D5nf drivers in Baltic Birch plywood cabinets with a front port unless otherwise specified. New photos coming soon!
Now features NRT with Quartz DMS - Noise Reduction Technique using Quartz Diamagnetic Metasurfaces
