I put a sound upgrade kit into a brass loco. Sound is tinny. Any have some pictures and list of materials used to make a cone to put on the back of the speaker?
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get a cardboard tube the size of your speaker, seal the back and that's it. I don't
have any photos but it works.
Tin
I made a wooden cofffin enclosure and put it in a hopper, much deeper sound.
I use old paint lids on the back of my speakers.
The ones from old testors spray cans work the best thy fit tight.
It brings the sound out better and will not take up much room.
Be shore to seal the edeg with silicone that helps bring out the base sounds better.
You can make a pretty good speaker baffle out of a short 1.5" length of 2" white PVC vacuflo pipe and a matching PVC cap.
Just seal them up and glue it to the back of the speaker with Goo or something similar.
Works quite well.
Rod
Rod
I too use old spray can tops. You can find these in just about any size, and they work pretty well. 
Spray paint tops or any small cup that will fit. I use Mortite rope caulk to seal the enclosure. It stays pliable for many years to allow removal if necessary.
Pete
Styrofoam cups works as well, and you can cut them to size easily. Pretty much anything that provides close to an airtight seal at the rear of the speaker will do the job. You don't need a huge baffle, just the spray can top that Harry mentions normally works very well.
Originally Posted by hah3:
I use old paint lids on the back of my speakers.
The ones from old testors spray cans work the best thy fit tight.
It brings the sound out better and will not take up much room.
Be shore to seal the edeg with silicone that helps bring out the base sounds better.
Careful about using silicone, as the fumes will eat some speakers. I used to work at Rockford Fosgate and this is a problem when building speaker enclosures. If you use silicone, you must wait at least a few days to allow it to fully cure so that the out gas from the curing process will not eat the speaker membranes. If they are an all paper speaker, then you should be okay, but if there is any foam in the speaker, the silicone will soften/eat it, reducing the life of the speaker.
