Looking closely at the above pictures the gap between the cone and basket is very small. The specs claim a response of 20 Hz to 20 kHz, the cabinet limits that to 30 Hz where it roll off very sharply. One of mine failed this way but a dab of glue fixed it. To quote Robert Heinlein: «TANSTAAFL or There Ain't No Such Thing As A Free Lunch.» There are downsides, all three of them:Ī) No dust protection to the voice coil assemblyī) Despite the powerful magnet (17,000 Gauss or 1.7 Tesla) the speaker can only handle 6 WattsĬ) It's a bit fragile - the cantilevers have a history of coming loose from the cone. Because of this the cone moves in an almost perfect piston like manner, with little or no bending moment applied to the cone and vanishingly small resistance to movement in/out. The cone, at its periphery, has double cantilevers connected to a ring system as does the voice coil. What makes the Axiom 80 so special is that it has neither surrounds nor spider. Here is a link to Fertin Acoustics who claim to be making a modern version of the Axiom 80. Twin Axiom details are here and information on the Axiom 80" is here. I say assumed because there is very little to go on as in the day sensitivity was a given in speaker design. Goodmans drivers are all efficient/sensitive and both the Twin Axioms and Axiom 80's I assumed to be around 98 dB/W/m. The Coral cabinet was originally designed for drivers smaller than the 12" ones I used, so I felt on pretty firm ground going with the extra expense of wood finish. The "Ever Decreasing Circles" saying comes to mind. Need I add that this happened after the cabinet was almost complete! To further annoy, after the cabinet was modified to accept the Axiom 80's, a friend took the Twin Axioms off me and had another set of cabinets built to house them. As with most so called full range drivers, I find I want a bit more treble and had a pair of tweeters which were to be incorporated into the front panel.Īs nothing in my experience goes to plan, at the last moment I found a pair of the supposed Holy Grail of full range drivers, the Goodmans Axiom 80. Having built the other two pairs with a painted black finish to save costs, this time I determined to go with Walnut with Rosewood trim. This Coral derived cabinet has fascinated me from the outset and when a pair of Goodmans Twin Axioms came my way I started on yet another voyage of discovery. Go back to Part I and Part II of this series of articles. Reviewer: Chris Templer - TNT South Africa Product name: Coral based horn with Goodmans Axiom 80Ĭost: € 600 cabinet only ( Currency conversion) Part 3: DIY 10" Goodmans Axiom 80 Horn Space, the instruments and the music
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