Yes I had to pack it in there real tight. Otherwise you could hear the sand moving when you shook the speaker up and down. I used a large drift punch and kept packing it in there, shake, add some more, pack it some more, etc. Took about 1/2 hour per tube. It was obvious when the tube was completely full and would not accept another grain. And now there is zero sand moving sound.
Yes I had to pack it in there real tight. Otherwise you could hear the sand moving when you shook the speaker up and down. I used a large drift punch and kept packing it in there, shake, add some more, pack it some more, etc. Took about 1/2 hour per tube. It was obvious when the tube was completely full and would not accept another grain. And now there is zero sand moving sound.
A vibrator would have worked great. No, not THAT kind of vibrator. Any kind of "home remedy" muscle vibrators would work well. We used something similar when pouring concrete walls.
But Chahly - Stahkist don't want speakers that look good, Stahkist wants speakers that sound good!
A vibrator would have worked great. No, not THAT kind of vibrator. Any kind of "home remedy" muscle vibrators would work well. We used something similar when pouring concrete walls.
Some great news! I found some time this morning and was able to take FR and distortion measurements of the PLA200 planars and the RT1.3WE tweeters in their "big round -over" enclosures. The PLA's were only surface mounted for this test but the two units measured exactly the same. Nice and smooth FR and low distortion in the pass band. So it's a green light to go ahead and veneer the enclosures and build a template to rebate the planars. On a subjective note, the mids sounded super clean and clear when the OmniMic Lady announced the tracks
I hate using the router to rebate odd shaped drivers. A little careless router work booger'd up one of my enclosures. I have way too much time and effort invested in these things to just scrap them. I'm going to fix them then use a conventional round frame driver for the midrange instead of these planars. I'll save the planars for a future project, but they will be rear mounted to a removable baffle next time.
After listening to so many truly great sounding speakers in Iowa this past weekend, I drove home inspired to get as many enclosures as I can finished before the snow flies. Then I can spend the cold months measuring, designing, voicing and enjoying. This project is the first one I plan to complete. Tonight I will give them their final light sanding. Hopefully have the enclosures completely finished this weekend.
Finished the final sanding last night. Tonight I did a bit of color matching on wood putty that fills my router tearout goofs. Can't wait to start measurements and crossover design (my favorite parts).
I applied the first coat of the 1:1:1 ratio of boiled linseed oil, turpentine, and gloss poly after work tonight. Unfortunately the temperature is dropping quickly so I had to close the garage door and fire up the garage furnace. That turpentine flat out stinks! My wife isn't very happy with me right now
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Marked them, drew a pencil line, then cut them on the table saw.
Not enough time to finish these before the Meniscus event. Hopefully in time for Iowa.
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