Category Archive: Speaker Designs

Aug 22 2021

Bike Party – 08-22-21

Bike Party 08-24-21 (Fusion Public URL File)

Bike Party 08-24-21 (Fusion Local File)

Sulaiman has built a 200 Ah LiFePO4 battery pack using these battery cells that is simply fantastic!!

We have standardized on these 16Ah batteries for inside the systems because they are cheap and weigh only 4 pounds. The East Bay Bike …

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Mar 15 2021

Bike Party Parts List – 03-15-21

The bike-party-parts-list-03-15-21 includes all electronic and hardware items required to build a complete Bike Party system.

Feedback is always welcomed.

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Mar 14 2021

Bike Party Fusion Images

Below are images generated by Fusion 360 of the Bike Party system.

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Mar 14 2021

Biker Party Internal Volume

Internal volume (cu ft) is calculated by multiplying the dimension, in inches, of the width by the height by the depth and then dividing by 12 times 12 times 12 (1728). The Bike Party box has a top and bottom internal cubic area behind the bass driver. The internal volumes are calculated below.

Top …

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Mar 13 2021

Is that Ulan-proofed?

I set the CNC table on fire Friday. It got really bad because our two fire extinguishers were empty. I ended up throwing water on the 9″ diameter burn. If the flame retardant stuff hadn’t worked, we could have lost the table.

I built the new Bike Party system (complete with the charred door …

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Feb 22 2021

Two systems

We brought out two Bike Party systems to test on Saturday for a friend’s birthday gathering. Both had issues. So… back to the lab for some hacking. After futzing for a bit (and figuring out and following colors!) I finally got the two systems up and running together.

So happy!

These sound fantazzzmick!! I …

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Feb 21 2021

That’s odd


Never stop learning.

I wrote the post below and kept thinking to myself; “This just can’t be right.” I picked up an unopened bag and realized with a shock; “Doh!!! These are extension cables. One end is female and the other is male. The connectors are not the same – the >>ENDS

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Feb 16 2021

About 4 hours

Start to finish, assembling this box took about 4 hours. I did not paint the port and plan to apply wood sealer (Bondi?) in the future.

If I used the belt sander, I could shave off (see what I did there?) a half hour or so. If I tried hard, including cutting, I bet …

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Jan 29 2021

Passive Radiator Boom Box

Our new Radiator Boom Box used (2) 5.25″ drivers for the mids and highs and (4) 5.25″ passive radiators for bass.

Power is supplied by the 10ah LiFePO4 battery pushing the JBL 4 channel amp. EQ is by Planet Audio.

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Dec 06 2020

Set-Up Questions And Answers in Fusion 360

1) Use the new (as of 2020) “Arrange” feature in Manufacture Workspace in Fusion 360 to nest all parts for cutting. (I made a 3 minute video on how to use this feature.)

2) Edit the new setup.

A) Right click the new setup and select “Edit”

B) I always start with the third …

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