1.50" Brass Floor Cones / Speaker Spikes

These spikes are perfect for larger speakers or sub woofers.

They are machined from brass and are available with a black chrome or gold finish.

They are 1.50" tall not including threaded rod and are 1.25" wide.

The threads are available in 1/4-20 (standard) and custom threads of  M6 (6mm), 5/16, M8 (8mm), 3/8, and 1/2". Please see the Speaker Thread Sizes by Manufacturer page to find the thread size for your speakers.

If your speaker does not have an insert already installed, no problem. Each standard 1/4-20 spike comes with a 1/4-20 stud and threaded insert. The threaded insert can easily be screwed into a 9 mm pre-drilled hole with an M6 or 7/32 Allen wrench. No need for this insert if your speakers already have inserts installed. Be sure to order the 1/4-20 (standard) to include the 1/4-20 stud and insert.

These are very heavy duty spikes and great for larger loudspeakers or subwoofers.

The spikes do not come with the match floor cups but they can be added to your order by following this link. Brass Floor Cups.

Not sure of your threads sizes for your loudspeakers? Click here!

Standard 1/4-20 Thread Size

Thread Size Price each Chrome Gold
Standard 1/4-20 $6.95



Main Speaker Spike Page

Speaker Spike FAQ Page

Custom Thread Types

Thread Size Price each Chrome Gold
M6 (6mm) $11.50



 5/16"  $15.75



M8 (8mm)  $16.75



3/8" $17.75



M10 (10mm) x 1.5 pitch $19.25


Amplifier Component Threads

These spikes are custom threaded to 10-32 which will fit most amplifiers or audio components. We have made many sets for the Krell Showcase line and others. If you have any doubt use a standard 10-32 screw to check yours.

Thread Size Price each Chrome Gold
10-32 $25.00




Main Speaker Spike Page

Speaker Spike FAQ Page

Brass & Granite Audio

Salem, OR 97303


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