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Exact replacement bottom concentric 15 mm collet knob, 6 mm shaft size, with through hole collet hardware. This is knob is used in the lower section of dbx dual concentric knobs, and can used by itself on any pots with a 4 mm shaft. Used by many other manufacturers of pro audio gear, good for DIY projects. Top diameter is 14 mm, bottom diameter is 16 mm. The knob is fastened by using a spanner tool or small needle nose to tighten the small nut near the top of the knob. Use any 15 mm medium collet cap with this knob, or for dual concentric applications, use a 11 mm small collet on top of it. This item is not returnable.
Please note: dbx used different knob sizes on separate production runs of some products. Before ordering, please measure the dimensions of your old knob to verify that this is the correct size. This item is not returnable.
Customers often come to us seeking replacement collet knobs and knob caps for dbx equipment. We stock virtually all these parts, but many types are very similar and selecting the right items can be tricky. Here are some guidelines that we hope will help.
Knobs and knob caps for dbx controls are all modular, and are sold separately. The knobs and caps are available in many different colors and size combinations. The colors are easy but you need to check the sizing carefully, especially when selecting knobs, because some types are very similar.
Collet knobs used for dbx single controls can be classified into 5 basic types:
Black T10 knobs with 10mm top diameter, 11mm bottom diameter, and 1/8” shaft diameter (SKU KNOB-T10/B11-125-BLK-L)
Black T10 knobs with 10mm top diameter, 11mm bottom diameter, and 4mm shaft diameter. (SKU KNOB-T10/B11-004-BLK-L)
Black T14 knobs with 14mm top diameter, 16mm bottom diameter, and 1/8” shaft diameter. (SKU KNOB-T14/B16-125-BLK-L)
Black T14 knobs with 14mm top diameter, 16mm bottom diameter, and 4mm” shaft diameter. (SKU KNOB-T14/B16-004-BLK-L)
Black T14 knobs with 14mm top diameter, 16mm bottom diameter, and 6mm” shaft diameter. (SKU KNOB-T14/B16-006-BLK-L)
For dbx gear all of these knobs are black with a white line.
To replace or select a dbx knob, carefully measure the top and bottom diameter of a sample knob — it will be the T10 or T14 type. Then, check the shaft diameter. The 1/8” and 4mm sizes are very similar, but the 4mm type is slightly bigger. Knowing these three dimensions will allow you to select the right knob.
Once you’ve chosen the right knob, choosing the cap is easy. The T10 knobs all use 9mm caps, with a line. The T14 knobs all use 13mm caps, with a line.
Collet knobs used for dbx dual controls all use 3 parts:
The bottom (larger) section is the Medium Bottom Concentric Knob. (SKU 6MMSHAFT.bot.con)
The upper (smaller) section is a T10 knob with 10mm top diameter, 11mm bottom diameter, and 4mm shaft diameter. (SKU KNOB-T10/B11-004-BLK-L)
The cap will be a 9mm type, with line.
Please be careful when ordering these knobs, as we do not accept returns on them.
We also sell collet knob tools, which make removal and installation a lot easier. (SKU Collet.tool)