What is the best HEAVY METAL speaker?

Just so we're clear here, the equipment used to **record** a metal band is a lot different than the gear used to **amplify** a metal band on stage.
On stage, its not uncommon for the guitarist to have a fairly low powered tube amp and is relying on the house for the volume apropos at a metal concert. A Shure SM58 might be the microphone used to mic the amp. The '58 is a terrible sounding mic.

In the studio, the same amp might be recorded using a Neumann mic, that costs about 100x more than the Shure! Think about that- the recording is going to sound better than the live amplified sound. It will sound a lot more like if the band were playing a personal concert for you in your home.
Why mess that up with speakers with the limitations common in PA speakers?? You won't get as much of the power of the drums and cymbals, less of the impact of the bass, and so on.

I play in one of the louder bands in the Twin Cities, and we've played on a number of metal bills and in metal clubs: I'm not making this stuff up. We're not metal, but we can easily hold our own with our particular brand of heavy prog space rock... Here is our third album (more cuts can be heard on our Bandcamp page):
https://www.youtube.com/watch?v=gg0l25nmGuY

I mixed a show a couple of years ago for Julian Lage with his trio of Kenny Wolleson and Scott Colley, and was blown away by these guys. Since then they've released 2 albums of that trio, and another of a live show in L.A. available as a download. The Recent Nels Kline 4 also features Lage and Colly, and I only mention these things as examples of otherwise jazzy, sophisticated, cerebral and brilliant musicians absolutely kicking the gonzagas out of some real interesting music. This stuff can light up a great system and wake up the subwoofers and your neighbors.

How about my Altec Stonehenge 1's from 1973? If not those, then my Altec Santana1's or my JBL 166's! Play it LOUD!

This one:

https://www.google.com/search?q=back+to+the+future+ampilfier+picture&ie=UTF-8&oe=UTF-8&h...

Outstanding for rock, techno, prog-rock, etc...;

- Legacy Focus 20/20 if you are looking used and low budget
- Legacy Focus HD if you are looking used and slightly more budget
- Legacy Focus SE, used or new, under $15K if memory serves on new price
- Legacy AERIS with Wavelet used is under $15K and is outstanding...

All these will move your walls and let you feel and hear the greatest rock material out there and so much more....Focus SE and AERIS are the 2 best....