Some speaker types have a dust cap in front of their diaphragm to protect them from damage, dirt, and debris. In most cases, the user cannot buy replacement dust caps for common speaker types. However, with some basic tools and materials, you can make your dust cap out of paper or rubber.
If there is no dust cap, the speaker will eventually get clogged and stop working. Fortunately, it is easy to make your speaker dust caps using some simple materials.
- Paper (notebook paper works fine)
- Rubber stamp pad (any ink will work)
Step 1: Draw Circles On the Paper
Draw two circles on the paper that are big enough for your diaphragm. The speaker’s diameter is usually about an inch away from the inside edge of its housing.
Step 2: Draw A Slit Between the Two Circles
Use the pencil and ruler to draw a slit between the two circles, going all the way through both so you have a line dividing each circle into four parts.
Make sure the division is a straight vertical line. This will be important later on when we cut out our new dust cap.
Step 3: Cut The Paper Circle
Cut out the paper circle along with the division you just drew in step two. The division should help you get clean, even cuts by making it easier to cut exactly around both circles at once. You might want to use the ruler again to get clean, straight cuts.
Step 4: Pour Some Ink On the Rubber Stamp Pad
Pour some ink on your rubber stamp pad and lightly coat the two paper pieces with the ink.
Make sure you do not cover more than a quarter of each circle with ink because this will interfere with inserting them later. Try putting a few coats on for even coverage if you feel like it is needed. Let dry.
Step 5: Remove Screws That Hold the Diaphragm
Get your speaker and prepare it to receive its new dust cap by removing any screws that hold down the diaphragm or holding the ring in place.
Keep these screws safe because they will be reused when reinstalling the dust cap after testing.
Step 6: Insert The Paper Dust Caps
Insert your freshly-inked, dried paper dust caps into the speaker and remove them again. You should see that the ink has transferred onto the diaphragm. This means your cap is good to go.
Step 7: Reinstall Your Speaker’s Diaphragm
Reinstall your speaker’s diaphragm and screws/nuts if you had taken those off for this process. Make sure those parts fit well so you can test out its sound later on.
How to Make Your Own Speaker Dust Cap
There are many different ways to make your speaker dust caps. Let’s discuss three popular methods.
Method 1: Using A Piece of Cloth
The first method is to use a piece of cloth. To do this, you need a piece of cloth that is larger than the dust cap itself.
Cut out the shape of the dust cap, and then sew the edges together. Make sure that the fabric is thick enough so that it will not tear or leak sound.
Method 2: Using Foam Rubber
The second method is to use foam rubber. This is a good option if you want a dust cap that is lightweight and easy to transport.
Cut out a piece of foam rubber that is the same size as the dust cap, and then use a hot glue gun to attach it to the speaker. You can also use specialized speaker dust cap glue.
Method 3: Using A Piece of Plastic
The third method is to use a piece of plastic. This is a good option if you want a dust cap that is durable and waterproof.
Cut out a piece of plastic that is the same size as the dust cap, and then use a hot glue gun to attach it to the speaker.
The Above Methods Are Divided into Two Types:
1. The Punching Method
The Rolling method enhances the stiffness of the cap allowing lower frequencies to be more efficiently controlled which means fewer slaps, thumps, and rattles.
The drawback is that it also enhances the higher frequency range. This makes them slightly harder to control by range compression or equalization if needed.
Therefore, additional care should be taken with this type of cap for those drivers who need a lot of help on lows but also requires some high-end boost. For example, tweeters or small woofers. Another drawback is that it can twist off the driver’s cone if not done properly.
2. The Rolling Method
The Punching method is a very simple and easy way to make a dust cap. It doesn’t add much stiffness to the cap, but it does prevent the fabric from wrinkling.
The drawback is that without any reinforcement it can be easily damaged by a sharp object.
Benefits of Making Your Speaker Dust Cap
1. You Can Customize Dust Cap
Perhaps the most obvious benefit is that you can customize them to match the decor of your room. This can be especially important if you have a particularly unique or eclectic style.
2. You Can Save Money
Another great benefit of making your dust caps is that you can save money. By using materials that you already have on hand, you can create dust caps for free.
If you need to purchase some supplies, they are likely to be relatively affordable.
3. You Can Personalize Your Audio Experience
Making your speaker dust caps also allows you to personalize your audio experience. You can choose the shape, size, and color of your dust caps to ensure that they perfectly complement your speakers.
This level of customization can make listening to music, watching movies, or playing video games an enjoyable experience for everyone in your household.
4. They Are Easy to Make
An additional benefit of making your dust caps is that they are easy to make. As long as you have the right equipment and are willing to put in some time, you can create them with little effort.
5. Ability to Choose Size, Shape, Color, And Material
The ability to choose your size, shape, color or even material can vastly enhance your audio experience.
If you want an exciting way to decorate the interior of your home without breaking the bank, this is one option that may be perfect for you.
Whichever method you choose, just be sure to take your time and be careful when making your dust cap. It’s important to get it right so that you can enjoy the best sound quality possible from your speaker.
All of these methods are easy to do and will help protect your speaker from dust and moisture. Choose the method that best suits your needs and get started.
Norvan Martin is the founder of BoomSpeaker.com. He is a professional Electronics Engineer and is passionate about home theater systems and AV electronics. BoomSpeaker was created as an online hub to share his knowledge and experiences as it relates to home theaters and home audio electronics.