Tweet
Finished 8-2-16. My first black High Gloss finish. All hardware purchased from Parts Express. Box is tuned to 38 Hz. Tuned with two Precision Port 4" Flared Ports - Part # 268-352. Driver is a Dayton Audio RSS 460HO-4 18" Subwoofer- Part # 295-472. Powered by a Crown XLS 1002 DriveCore 2 Power Amplifier, bridged for 1100 watts RMS @ 4 Ohms, Part # 245-507. Box Material is 3/4" MDF. Finish used was Rust-Oleum Gloss Black oil based paint, covered by oil based Polyurethane .
-
-
Front View -
Nice job! But why such a high tune?"He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
http://www.diy-ny.com/
Comment
-
To take advantage of the boost from the ported tuning, I could have tuned at 17 to 21 Hz for a flatter curve, but it is just my preference. My test revealed a pretty flat response curve, maybe because of room gain. See graph. I used a decible meter and tone generator - http://www.szynalski.com/tone-generator/ to get the results. Sounds great.Originally posted by Face View Post
Comment
-
Nice job on the finish! RS Subs are just soooo....sexy! It's gonna be a tough choice for me when it comes time, the Ultimax Subs aren't hard to look at either.Comment
-
Looks fantastic, for sure.
Could I pick your brain on the amp a bit? That's the new Crown series that replaced the XLS series. I have the XLS1500 but needed to purchase a ART Cleanbox to get the RCA line level output from my HT amp up to Pro audio levels. I thought I read that the new Crown amps had built in switching for home/pro output built into them, is that true? Also, how do you like the amp in general? I like mine, but honestly I don't use it an awful lot, not as much as I wish I did. Thinking about possibly this amp or the 1500 for a friend's sub build.
Thanks, and nice work on your project, it looks beautiful. Not many folks think to use oil paint.
TomZ
Zarbo Audio Projects Youtube Channel: https://www.youtube.com/channel/UCEZ...aFQSTl6NdOwgxQ * 320-641 Amp Review Youtube: https://youtu.be/ugjfcI5p6m0 *Veneering curves, seams, using heat-lock iron on method *Trimming veneer & tips *Curved Sides glue-up video
*Part 2 *Gluing multiple curved laminations of HDFComment
-
That's an easy to look at Sub...well done!Comment
-
Originally posted by tomzarbo View Post
Thanks TomZ. To answer your question about the line in switching. The new Crown amps have a high and low input sensitivity selection. Normal is 1.4V and High is .775. Default is the High setting that is recommended for RCA plug ins. I believe the .775 V setting gives a slight boost to the signal.
As to how I like the amp, I believe it is well made and the features and programming is excellent. The style is OK, but function and performance is more important. It definitely is doing a great job so far.Comment
-
-
Was that Rust-Oleum spray or brushed gloss paint? Great job man!
Comment
-
9 cu.ft. ?
Personally, I'd have tuned somewhere in the lower half of the 20s.
Great job!
Comment
-
Thanks DKKruse. Paint and Polyurethane was applied with foam brushes. no sanding needed.Originally posted by dkkruse View PostComment
-
Hm, I also find the tuning odd, but it looks quite sharp- what frequency are you high-passing at? 3/4" walls? If so, I'd suggest squeezing a few more dowels in there if you can. The black look certainly is attractive!Comment
-
I am using a low pass starting at 250 HZ. I have a DIY 15" dual voice coil sub that was tuned to 33 HZ in my SUV and this one sounds even better. Id say even though 38 HZ tuning may sound a little high, hearing is proof when I compare it to other subs that were suppose to be tuned to 17 - 21 HZ for a flatter response curve. the 45-50 HZ range has more acoustical energy. Of course this is just my opinion and there may or may not be any data to support that, and as I said, this is my preference in bass frequency.Originally posted by badman View PostComment
Comment