The whole construction process of "Pit Vipers"

[9sheng]

I started construction again today

[9sheng]

This is my frequency divider PCB

[9sheng]

I haven't found a capacitor of the appropriate specification for the mid-range C2, so I chose two capacitors in parallel. Of course, one capacitor of the appropriate specification can be directly welded in the PCB. I only reserved 2 capacitor welding positions.
It is very interesting that I designed the mezzo PCB into the shape of "USS Enterprise (NCC-1701-J)"!





For the C5 capacitor of the bass part, I also used two capacitors as parallel connection, and he also reserved the position for welding a single capacitor.

[9sheng]

Three parts of Crossover




Find a suitable position in the box,

Start fixing the base of the frequency divider

[9sheng]

The installation position of the frequency divider is behind the woofer. There is enough space. It is very convenient for later disassembly, upgrading and maintenance.



The speaker terminal will also be installed next to the bass divider.


Starting from the frequency divider, I need about 40cm bass speaker line, 50cm mid-range speaker line and 60cm tweeter line​

[Paul Carmody]

Some great ideas on crossover board layout. Very satisfying to watch.

[9sheng]

A long time has passed, and I haven't made any progress. I kept him in the corner. Recently, I have closed the front bumper. Wood chips have been inserted around, and I hope to use this method to control the displacement of the subsequent panels! You will see a long section of wood chipping exposed, but in fact, I have already inserted it deeply, extending through the second layer of panels.

[DeZZar]

Looking really good - great work!

I might have missed it - which software did you use to design the PCB? And who did you use to print them? What is the trace thickness/specification?

[9sheng]

Looking really good - great work!

I might have missed it - which software did you use to design the PCB? And who did you use to print them? What is the trace thickness/specification?

I used JLC EDA for design and JLC free sampling service for sampling.

[9sheng]

[9sheng]

After some assembly, I installed the speaker and it can be used for preliminary listening. Check if the circuit is functioning properly。


I have been using 'Classix II' as a TV speaker to watch movies and listen to music. I am very familiar with its sound and am very satisfied with it. 'Classix II' is a very excellent player. I connected the plug of the amplifier to "Pit Vipers" and started listening to a song. I felt the howling of the "Big Monster", which was very shocking. I have never had a speaker of such a large size before, and this is the largest speaker I have ever built myself.


At this point, I really like it.

I need to thank Paul for providing us with such a good design.

Hey guys, do you think my work is over here? No, not yet. There is still a lot of work to be done in the future! How to complete the surface paint treatment of the box, etc

[djg]

Painting MDF is challenging, mostly from the seams and any raw edges. I'm sure you're up to the challenge.Here is a classic thread with one builder's method.

https://techtalk.parts-express.com/forum/tech-talk-forum/58533-continuum-speakers-using-my-trench-method-on-the-mdf-seams