Reddit mentions of Gorilla Wood Glue, 18 ounce Bottle, (Pack of 1)

I was thinking the same thing at first, but I'm giving the OP the benefit of the doubt that he means Gorilla Wood Glue and not the original Gorilla Glue.

I don't think people realize how expensive it is for a company to build speakers. The general consensus is that there is a 1000% markup, meaning a $1000 pair of speakers only are $100 in parts. The company has to spend money to design and research the speakers. All of that is done in a building that they pay for. Next, they've got to build the speakers. Someone personally has to screw in each driver and apply every vinyl finish. They have to pay people to do that stuff. Next, they get shipped to a distributor. Speakers are big and heavy, so that isn't cheap. The distributor takes a cut of the money. They then send the speakers to a dealer. Once again, shipping costs. The dealer also needs some money, so they raise the price to make some money.

I'll throw out an example. The Buchardt S400 is a good one. It is made out of parts that anyone can buy. They use this $20 tweeter with a waveguilde attached, this $34 passive radiator, and this $71 woofer. So, they come out to about $125 per speaker, and $250 for the pair. They most likely get bulk discounts, but we can ignore that. Anyways, you get about $250 worth of parts in $1800 speakers.

Anyways, besides what comes when you order stuff, you've got to get some other parts.

You'll need a pair of binding posts for every pair of speakers you make. I use these ones, but really any of them should work.

You'll need polyfill to fill the speakers.

Screws to screw in the drivers.

Speaker wire, for inside of the speakers as well as to wire it all up when you're done. Since you're spending this much on the setup, banana plugs to plug in the wires might make you feel better. You won't need them, but it is definitely much easier to use them.

Alright, so that is really all of the stuff that you'll need inside the speakers. Now we can talk about the building stuff.

Clamps. You'll be gluing the speakers together, and need to hold them in place while the glue dries. Speaking of, wood glue.

You'll need a soldering iron for soldering everything together inside. That one comes with solder as well, as far as I can tell.

However, you want to finish the speakers would be last. Spray paint, vinyl wrap, whatever you want really. You could even get paint and a roller and paint them like that. You'll most likely want to sand and prime them first.

I think that's everything. Anyways, that Buchardt example is one of many examples. These Von Schweikerts are $35k and only have like $5k in parts, or something like that. I looked them all up once but I don't remember. Anyways, this is all to say, a pair of $400 speakers like the Monitor Audios don't have $400 in parts. It's much less than that.

For example, I just ordered this because I can't stand the circular shape of this.