To assemble a DIY speaker project, you will need a few tools and supplies. Here is a list of some of the things you will need:

1. Speaker drivers: These are the actual speakers that will produce the sound. You will need at least one driver per speaker.
2. Cabinet or enclosure: This is the box that the speaker drivers will be mounted in. You can use a pre-made enclosure or build your own using wood or MDF (medium density fiberboard).
3. Crossover components: A crossover is an electrical circuit that divides the audio signal into separate frequency bands and sends each band to the appropriate driver. You will need crossover components such as inductors and capacitors to build the crossover circuit.
4. Wire: You will need wire to connect the crossover components and the drivers to the amplifier.
5. Soldering iron and solder: You will need a soldering iron and solder to make connections between the crossover components and the drivers.
6. Screws and screws driver: You will need screws and a screw driver to attach the drivers to the enclosure and to attach the crossover circuit to the enclosure.
7. Amplifier: You will need an amplifier to power the speakers. You can use a standalone amplifier or a receiver that has built-in amplification.
8. Speaker grills (optional): If you want to protect the drivers, you can use speaker grills to cover them.
9. Acoustic foam or other materials (optional): You can use acoustic foam or other materials to line the inside of the enclosure to improve the sound quality.

Depending on the specific project, you may need additional tools or supplies. I recommend consulting the instructions or plans for your specific project to determine exactly what you will need.