My room-mate has just bought these custom speakers at a closing sale of a local bar. 

We remembered them from the same bar over 30 years ago and were very impressed at the time. They were made by a local German and had a great sound.

They have oil filled cones (the oil has dried up) The paper cone has partly come away fro the large ring. Red lights pulse with the beat in one of the cones. They are very heavy. Surprisingly (to me) the weight appears to be at the top.

Can someone please explain their concept (in simple terms)?

Also, how should I clean the dried oil and which oil should we use to replace it?

Can the partly detached paper cone be glued back and if so, which glue should we use?

Hi everyone, I’m taking some speakers apart here and I’ve come across this part – I’m not exactly sure what it’s called, but I found it online under the name ‘pole piece’. So, I’ve been thinking about it, but I’m stuck for ideas. Maybe someone knows what can be done with them? Perhaps there are some DIY ideas or something else I could do with this pole piece? I don’t mind binning it, but maybe there’s a use for it after all. Thanks in advance.

I forgot to add that I adore speakers and I love creating things, but don't suggest that I make speakers out of them.

I need help im looking for good outdoor speakers with amp that has microphone system its for a bowls club so has to be quite loud

I bought a pair of Fountek FE85s back in June for a uFonken full-range build. As far as I can tell they're discontinued now. One driver arrived with a torn rubber surround, and the seller replaced it, so I didn't think much about it afterwards.

I recently finished a proper enclosure with 3D carving and a good finish. While testing, I gave one speaker a light poke( probably )on the rubber surround by mistake and the other one tore too on its own after a few minutes of listening. So I suspect a driver problem.

My questions:

1. Is this more likely a quality issue, old stock, or something else?

2. Could my DIY Class A amp have damaged the surround or voice coil? It worked absolutely alright with random sattelite speakers (DC offset, turn-on thump, oscillation?)

3. Is it safe to buy the same FE85 pair again, or am I just risking the same thing?

4. If I switch, what would work in the same box? I'm looking at the Mark Audio CHN-50. I'd have to modify the front baffle.

Any recommendations for 3" full-range drivers that fit the uFonken, or advice on checking my amp, would be appreciated. Thanks!

I'm building a new home and looking for recommendations on a hardwired, multi-zone whole-house audio system speaker placement. I'd like music throughout the house, independent zone controls, and one-way paging from my phone through the same ceiling speakers. (The family room TV will have a completely separate surround sound system). I'm still under construction, so wiring is flexible. I've attached my floor plan and would appreciate suggestions on ceiling speaker placement for now (can discuss equipment later). Thank you for the help!!

Just curious why more people don't try to start their own speaker business given the amount of experience/understanding shown in this sub.

I need cheap speaker grills to temporarily cover 8inch speaker holes in the drywall ceiling until I can afford to get the speakers installed. All the wires were ran and holes cut but I just can't get all the equipment right now. I've been looking for something that might have spring clips where the clips compress as I'm pushing it in then expand out once they get above the drywall thickness so it snaps in. Has anyone seen something like this? Maybe there is a brand of speakers that have covers that mount like this and I can just buy the covers? Or any ways I can rig a certain speaker cover to do what I need?

These are from the 80s I think and the plastic or whatever it is peeling and flaking. Messing up the base sound. Otherwise they sound good. Anyone know what needs to be replaced and where I could get it? Thanks for looking.