Fostex BK12m – 4.5” Full-Range High Efficiency Folded Horn Kit Price shown is for a PAIR Madisound is pleased to bring you the BK12m, a high efficiency single driver speaker kit. The 4.5” Full-Range driver is combined with a custom designed folded horn enclosure. The driver is run full range without a crossover, with a very lifelike and engaging overall presentation.

These speakers can be driven with very low powered amplifiers and effortlessly produce satisfying sound levels for all but the largest rooms. The is one of, if not the most, popular full range drivers from the long running Fostex FE line.

Shop from the world's largest selection and best deals for Pro Audio Speaker Drivers & Horns for Full-Range Frequencies. Shop with confidence on eBay! Using a single 5 inch full range driver this amazing tiny horn hits the low bass notes!

This reasonably priced driver strikes a favorable balance of physical size, high sensitivity, satisfying low end extension, sweet midrange and extended high frequency reproduction. The F3 is about 65Hz and the roll off is gradual. We would like extend a big thank you to David Dlugos of for his time and effort in this project. The first-rate enclosure design and cabinet drawings make this a very special kit offering for the full range enthusiast. Please visit the to explore another world of drivers and cabinet plans. The cabinets are locally cut by CNC machine from high quality multi-layer 11/16” Baltic Birch and delivered flat packed.

The through hole for the driver is chamfered to promote optimal air flow. Wood glue, clamps and a little sand paper are all that is required for assembly. Detailed assembly instructions are also included.

Completed cabinets measure 31 5/8” tall x 7 1/4” wide x 14 1/2” deep. The unfinished/unstained wood is ready for your choice of finish. You may also choose to round over the edges if you prefer that style of appearance. High quality internal hookup wire ( ) and damping material ( ) and are included with the kit purchase. The rear of the cabinet is already cut with two holes for. We recommend the. Please select your preference from the drop down menu.

You may also choose to cut a hole for an if you prefer a flush rear of the cabinet as opposed to binding posts. Nominal impedance ~ 8 ohms F3 ~ 65 Hz BK-12m Kit Includes: • 2x 4.5” Full Range Drivers • 2x Unassembled and Unfinished Baltic Birch Cabinets (Assembled measurements 31 5/8” tall x 7 1/4” wide, 14 1/2” deep) • 3 oz. Internal damping material (Dampen each driver chamber with this. We prefer using about 1/2 the quantity provided.

Adjust to taste.) • 5 ft. 15 AWG Internal speaker wire • 4x Quick Connects (2 red, 2 black) • 8x (8x Philips Head wood screws also included) • Assembly Instructions Tools Required for Assembly: • Elmer’s Wood Glue • Sand Paper • Bar Clamps (3x 24', 2x 36' - the more the better. Available at your local hardware store, or online at ). My build of the BK-12m speaker kit was completed with the Fostex FE108SOL drivers as a substitute. I chose the FE108SOL for three reasons: A)I thought that the flatter response curve, as well as the purported lower range might make for a better sound than the standard FE126ENs B)I like the idea of having a “limited edition” driver. Better File Rename Serial 5.7.

It makes the speaker a bit more of a conversation piece. Ncis Season 1 Mkv. C)I think the circle on rectangle shape is more aesthetically pleasing than the square on square, but that’s strictly picking nits.

The FE108 Sigma is the new upgrade driver, it would seem, since the FE108SOL is no longer available. I suspect it would be similar to the drivers I selected in many ways. Construction The provided instructions were mostly accurate and complete. Building the kit was relatively easy, following the instructions precisely.

I did run into a couple of build issues: A)The instructions call for 5 clamps, of two lengths, 24 and 36 inches. After a small gap on the first speaker, I realized a sixth clamp was needed, although it need only be 12 inches. In at least one step, the instructions called for clamping one edge with a single clamp, when clamping two corners of the edge were really necessary for a sure fit. B)The circular edge of the FE108SOL drivers meant that the holes drilled passed through the beveled edge the driver is installed in. Although I don’t believe there is reason to suspect this will have either sonic or structural effect, the shape of the FE126EN drivers would not have this issue.