my new 604 cabinets I'm building.

[cradeldorf]

A variation on G.A. Briggs's ~aperiodic vent. He used many parallel saw cuts. Wider ones need to be covered with an empirically found damping material. As is, it tuned your cab somewhat higher.

One inexpensive variant to try would be a rear cover made of braced pegboard.

GM

Funny you should mention that because that's exactly what I was picturing because when I was a we little lad we used to have a stereo console and the back panel had a bunch of about 3/8 holes in it right where the speaker backs would be. That's actually what I had in mind when I did the slot thing, by making more smaller ports would give me a better more level sound. Now I know (thank's to you) that I should have at least stuffed some polyfill between the slots or something like that and not just leave them wide open. Plus the backsides of all those boards had no insulation or anything on them so probably had a lot of reflections going on inside.

[GM]

Probably...........

GM

[cradeldorf]

I've been trying to capture what I'm hearing on video but haven't succeeded. I was trying different things on my camera mic to help it.....It was a little better but still not as nice as I'd like it to sound for posting purposes.

Some Rango.

Rango on new 12CuFt cabs.wmv - YouTube

[voice of the theater]

I've been trying to capture what I'm hearing on video but haven't succeeded. I was trying different things on my camera mic to help it.....It was a little better but still not as nice as I'd like it to sound for posting purposes.

Some Rango.

Rango on new 12CuFt cabs.wmv - YouTube

I haven't seen that movie (RANGO). It's a remake of "Jungle Book", right? I love that song "The Bear Necessities" you should show that clip next time! (kidding)

But seriously, the only way you'll be able to even come close to capturing on video what you're hearing in the room would be with a different setup. First of all, you'd need a video camera that can accept a stereo "line in" instead of using a "built in" microphone on a video camera. Then you'd need two "good" microphones, set up a decent distance from your speakers. You'd want to plug the microphones into a soundboard, and run the stereo line out of the soundboard into the stereo line in of your camera. Or, instead of a soundboard, you could plug the two microphones into a stereo tape deck and run the stereo output of the tape deck into the stereo line in on the video camera (using the tape deck for "gain" -- to get the signal loud enough for the camcorder). That would, at least, get you much closer to what you're hearing in the room. You'll just never be able to get a good enough recording that will sound like what you're hearing from your 604's with the built in mic that you're using. Not to say the clips aren't worth posting, but don't bang your head against the wall trying to capture something that your mic can't do---it's no fun trying to chop down a giant redwood with a rubber hatchet!

[cradeldorf]

Dangit...my next project was to cut down a redwood with a rubber hatchet too. Yeah I know, technically my camera has stereo microphones in it but their right next to each other so basically useless. I don't think Rango has anything to do with jungle book as far as I know.... But maybe your right. Tomorrow is payday so I'm going to get some more stuff for the speakers. will update when I have something of value to contribute.

[voice of the theater]

Dangit...my next project was to cut down a redwood with a rubber hatchet too. Yeah I know, technically my camera has stereo microphones in it but their right next to each other so basically useless. I don't think Rango has anything to do with jungle book as far as I know.... But maybe your right. Tomorrow is payday so I'm going to get some more stuff for the speakers. will update when I have something of value to contribute.

I was kidding about Jungle Book -- that's why I put "(kidding)" and the winking smiley after my comment. I'm sure it has nothing to do with Rango...... Looking forward to the update on your speakers.....

I haven't seen that movie (RANGO). It's a remake of "Jungle Book", right? I love that song "The Bear Necessities" you should show that clip next time! (kidding)

[cradeldorf]

Ok yesterday I did the backs up with 3/4 x 15 inch gaps on both sides...45 sq inches of port total,
sounded pretty good. Then today I put 6 of those 1 5/8 x 8 x 16 patio paver blocks in the bottom of both speakers. That brought the mids up considerably and the lows down and solid. Really sweet sounding now. Grills next.

EDIT: I put together a vid to let you hear them.

http://www.youtube.com/watch?v=4-6Yzm48d04