Brines Acoustics

M18-F225

Fostex FF225WK Mass-Loaded TL

Last Modified 7/11/11

The M18-F225 is a lower priced version of the LT-2000 with the cabinet specifically dimensioned for the Fostex FF225WK. The M18-F225 has a slightly darker character than the LT-2000. The M18-F225 has a strong bass into the 30's with no fatigue during long listening sessions. As the FF225WK can be over-driven more gracefully than the DX3, the M18-F225 is a great choice if your musical diet tends to classic rock and other heavier genre.

A tweeter option for the M18-F225. This adds air and openness to the speaker. A Fostex FT17H tweeter is rabbeting into the supra baffle of the stock M18-F225.

A number of other drivers can be made to work in the basic M18-F225 cabinet. The Lowther DX2 and DX3 can be fitted into this cabinet, providing an upgrade path to near LT-2000 MkII performance. In my opinion, the Fostex FF225WK is the best driver in the price range and I will continue to develop the cabinet for this driver. In any case, before you purchase the M18-F225, you should contact me for a discussion of options and suitability to your needs.

Specifications

Quarter-wave Resonator Cabinet (MLTL)

Dimensions: 43" x 11 1/2" x 12 3/4"

Weight 60 lb.

F₃ = 42Hz, F₁₀ = 35Hz

Frequency Response Chart

Black=On Axis; Red=15^o; Blue=30^o; Green=45^o; Brown=60^o

I offer limited custom production here at Hot Springs Village, AR. I will provide plans, flats and completed speakers. Of course, prices may vary at my whim or due to the cost of materials. Since I am doing one-off production, I get no discounts from suppliers. I simply pass on the actual cost of drivers and filter parts. The current price list is:

Notes:

Prices are for two cabinets or speakers, delivered at Hot Springs Village AR 71909. Prices All shipping and handling is included. The standard material is 3/4" high quality plywood. Non-standard materials or finish are negotiable. If you feel that you will need grills, see Grills.

1. Plans will be delivered as PDF documents attached to e-mail. Snail mail delivery can be arranged.
2. Flats include all panels and braces ready for glue-up. The plinth and false baffle are drilled for mounting screws. Drivers, filters, lining material and all hardware will be provided by the customer. Shipping weight is 50lb each for two packages.
3. Complete speakers are ready to hook up to your amplifier, except that the bases need to be installed. Drivers and all hardware are included. The filter will be installed unless arranged otherwise. The standard finish is quarter-cut red oak veneer, stained to your specification and finished with four coats of tung oil finish. For more information about available finishes, see Fit and Finish. Shipping weight is two 60lb packages for two cabinets and one 15lb package for the bases.

The M18-F225 uses proprietary design procedures licensed to me by Martin J. King. Any commercial use of this design, including third-party construction for hire, requires a license agreement from me.

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