Originally Posted by Archaea
Reality Check called, he wants to speak to you.
More midbass than the caps?
Aren't you still just running a pair for these initial demos or do you have four of them now? If only a pair...
Dayton Audio Driver - 18" driver with 12-20mm of excursion according to which spec you read. 900 watt RMS, 1800 watt peak power handling spec. 89dB 1 watt/1 meter sensitivity
Data-Bass said the useable max output on the Dayton driver is 122dB.
JTR Captivator Driver - 18" driver with 30mm of excursion according to JTR. 4000watt RMS, 7200 watt peak power handling spec. 97 dB sensitivity 1 watt/1 meter (I thought I heard)
Jeff said the useable output on the Cap was in the low 130dB's on his website. (apples to oranges measurements - but all I got at current).
The CHT 18.1 put up higher SPL numbers than the Dayton driver on data-bass.
I'm not saying you aren't liking what you are hearing. You might be liking it better!!! What I am saying is if you want more mid-bass in the cap driver - EQ to taste!!! It's got scads of headroom especially up high!
And by the numbers on database that driver looks like the CHT 18.1 driver would have given it a run/beaten it for everything except for at the lowest frequencies. At any rate --- I haven't heard them so I'm glad you are enthused! Your cabs look great and I'm sure in multiples that'll be a very potent system.
Yes, I'm running 4 drivers now, basically all colocated in a dual dual-opposed configuration.
A couple things: The JTR Cap sensitivity is listed as 91db on their site. The dayton's are indeed 89db sensitive, but there are twice as many drivers. Yes, the Caps will still be a bit more efficient around tune. However, in the midbass region, xmax/excursion is not as big of a factor as is sensitivity and displacement - both were/are being fed the same power from the Crown.
And yes the JTR does also have a lot of headroom in the midbass area, and they also sound great. The Daytons are pretty awesome though from what I've heard so far.
Are you visiting you're in laws over the holidays?
Originally Posted by MrSmithers
That's for 1. He's running 4, each pair being co-located. Also, after building materials, for a lower cost (probably around 75% the cost) than a single passive captivator
Gorilla, these look great, even unpainted! I actually kind of like the contrast (from a distance at least) between the Dayton's and the cabs. Awesome work and pretty inspiring being a first-time DIY'er. Can't wait to hear some more impressions as you get them dialed in. Are you planning on looking into implementing an LT with your miniDSP? It'd be really interesting to see what you'd get without the rolloff of your Crown amp.
Thanks for the complements, much appreciated. Here are my building costs - some money could be saved like primer, magnets, grills, etc if you did not want that stuff.
4 X Dayton 18 HO drivers - 933
4 sheets 4x8 ply, cabinet grade - 123
2 x binding post plates - 13
black screws for binding posts - 5
#10 x 1.5" spax screws for Drivers - 10
1 gallon primer - enough for probably 8 boxes - 18
3 tubes of PL premium sealant/glue - 15
1 gallon duratex - not used yet but enough for many boxes including a roller, 2 extra pads, and shipping - 72.00
Magnets for grills 40
14 pounds of polyfill from Walmart, not used yet - 42
1 X Crown XLS5000 (when it was on special with coupon) $533
1 x Minidsp with shipping $165
Wood for grill frames - approximately 10.00 for 1x4's ripped down
Cloth for speaker grill fabric - 15
Feet for enclosures - FREE thanks to my boy popalock
Sandpaper = already had like 50 sheets of 120 / 150 / 320 grits, but if you need to buy this add maybe 5.00.
Wire - already had a spool of monoprice 12 gauge, but if you needed to buy I used about 12 feet overall. 5.00 maybe?
Total = $1994. Not too shabby.
Subtract out the amp and EQ = 1296 including my fancy coatings and grill materials.
I think that's it.Edited by Gorilla83 - 11/19/12 at 9:19am