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Search: Posts Made By: michaelddd
Forum: DIY Speakers and Subs   08-20-2015, 06:14 PM
Replies: 23
Views: 565
Posted By michaelddd
The worst part about replacing a KB and mouse is...

The worst part about replacing a KB and mouse is finding suitable replacements. I am very picky about my mouse. I have big hands and game a lot...in fact, I only game on the PC...don't even own a...
Forum: DIY Speakers and Subs   08-13-2015, 07:15 PM
Replies: 18
Views: 325
Posted By michaelddd
Thanks guys. I will wear long pants/sleeves,...

Thanks guys. I will wear long pants/sleeves, gloves and a respirator and eye protection too. I'm hyper-sensitive to this kind of stuff. I will be working alone, so the long sheets are going to get...
Forum: DIY Speakers and Subs   08-13-2015, 07:02 PM
Replies: 31
Views: 536
Posted By michaelddd
That's a big room for a couple of 12's powered by...

That's a big room for a couple of 12's powered by 500 watts apiece. What kind of output/experience are you looking for? You'll get some boom for sure, but if you're looking for tactile bass that...
Forum: DIY Speakers and Subs   08-13-2015, 06:42 PM
Replies: 18
Views: 325
Posted By michaelddd
Thanks for the details on how you installed it,...

Thanks for the details on how you installed it, lemonslush. I was wondering what size washers to buy. I'd imagine you bought the "contractor pack" of like 100 washers or something? Hardware...
Forum: DIY Speakers and Subs   08-12-2015, 06:58 PM
Replies: 18
Views: 325
Posted By michaelddd
That's what I've read will work and what I plan...

That's what I've read will work and what I plan on doing myself. I bought 2 rolls of the 1.5" Linacoustic liner and am also concerned about the smell. I plan on leaving it unrolled in the garage...
Forum: DIY Speakers and Subs   08-12-2015, 05:36 PM
Replies: 65
Views: 1,766
Posted By michaelddd
Your subs are looking fantastic! Very smart of...

Your subs are looking fantastic! Very smart of you to get the right-angle drill guide/clamp. You made a drill press and that's the most accurate way to get your mounting holes straight. I am...
Forum: DIY Speakers and Subs   08-06-2015, 05:53 PM
Replies: 9
Views: 227
Posted By michaelddd
I think you'll find what you're looking for on...

I think you'll find what you're looking for on this page. http://www.parts-express.com/cat/grill-guides/325


Funny; I had clicked this post, then stepped out of the room for a few mins. When I...
Forum: DIY Speakers and Subs   08-02-2015, 08:10 PM
Replies: 23
Views: 629
Posted By michaelddd
Thanks for the details. It's pretty cool that...

Thanks for the details. It's pretty cool that the standard PR's worked for your application right out of the box. PR subs have always been interesting to me. You get the efficiency and FR of a...
Forum: DIY Speakers and Subs   08-02-2015, 05:53 PM
Replies: 23
Views: 629
Posted By michaelddd
What a cool build. You don't see PR builds too...

What a cool build. You don't see PR builds too often. How did you tune the PRs and know to add two instead of just one? Damn good job for using just a circ saw...your woodworking chops are pretty...
Forum: DIY Speakers and Subs   08-01-2015, 05:15 PM
Replies: 13
Views: 198
Posted By michaelddd
On Driver #3...

On Driver #3 (http://www.avsforum.com/forum/usertag.php?do=list&action=hash&hash=3) right now and all looks good. Ran it at 50 volts for a few mins @ 19.5Hz. According to the WinISD "free-air"...
Forum: DIY Speakers and Subs   08-01-2015, 09:59 AM
Replies: 13
Views: 198
Posted By michaelddd
Thanks again, Bill. So should I change the...

Thanks again, Bill. So should I change the break-in frequency to 19.5Hz, which is the UM-18's FS?
Forum: DIY Speakers and Subs   08-01-2015, 09:49 AM
Replies: 13
Views: 198
Posted By michaelddd
Ho-lee-blowed-up drivers, Batman! I...

Ho-lee-blowed-up drivers, Batman!


I modeled a UM18 in a sealed, 150 cubic foot box. At 15Hz the driver reaches XMax with just 42 volts...so it would seem that I've already driven the first...
Forum: DIY Speakers and Subs   08-01-2015, 09:39 AM
Replies: 13
Views: 198
Posted By michaelddd
Good point! Didn't think of that. :o I'll do...

Good point! Didn't think of that. :o I'll do that with Driver #3 (http://www.avsforum.com/forum/usertag.php?do=list&action=hash&hash=3) ; the 2nd one still needs a few more hours of "stretching."
...
Forum: DIY Speakers and Subs   08-01-2015, 09:36 AM
Replies: 13
Views: 198
Posted By michaelddd
Thank you, Bill. This is VERY helpful. I will get...

Thank you, Bill. This is VERY helpful. I will get cracking with WinISD.


At this point I've verified that two of my four drivers are good. I haven't modeled them "free air" in WinISD, but I did...
Forum: DIY Speakers and Subs   07-31-2015, 09:47 PM
Replies: 13
Views: 198
Posted By michaelddd
DIY Driver Test Stand

In my quest for the ideal driver break-in rig/process, I decided to not reinvent the wheel and just to take a proven design and make it my own. Sitting drivers on top of my workbench and vibrating...
Forum: Dedicated Theater Design & Construction   07-30-2015, 01:21 PM
Replies: 121
Views: 4,233
Posted By michaelddd
Incredible looking theater and your progress is...

Incredible looking theater and your progress is incredible. The space i have for my HT is identical to yours, save for my 9' ceiling. The WxL are the same. You've given me some ideas. Thanks and...
Forum: DIY Speakers and Subs   07-30-2015, 12:40 PM
Replies: 107
Views: 3,075
Posted By michaelddd
Congrats! Just FYI and you may know this...

Congrats! Just FYI and you may know this already: REW has a built-in tone generator (GEN I think the icon is called). You don't have to download any test tones. :)
Forum: DIY Speakers and Subs   07-30-2015, 10:29 AM
Replies: 21
Views: 537
Posted By michaelddd
Air might also be leaking out around the driver...

Air might also be leaking out around the driver itself. Depending on the gasketing material/method used, sometimes you really have to crank down on the mounting hardware. That's why I use t-nuts or...
Forum: DIY Speakers and Subs   07-30-2015, 10:24 AM
Replies: 15
Views: 424
Posted By michaelddd
LOL@SAMPS. So true! :D

LOL@SAMPS. So true! :D
Forum: DIY Speakers and Subs   07-30-2015, 10:17 AM
Replies: 65
Views: 1,766
Posted By michaelddd
Putting in the t-nuts BEFORE assembling the...

Putting in the t-nuts BEFORE assembling the cabinet is actually the preferred/smarter way to do. Do not hammer them in as you can bend/break the legs.

Use a 1/4" bolt (or whatever size the...
Forum: DIY Speakers and Subs   07-30-2015, 07:41 AM
Replies: 22
Views: 429
Posted By michaelddd
I not only tested my 4 drivers (battery test on...

I not only tested my 4 drivers (battery test on each voicecoil), I broke them in but did not get close to a max-to-max suspension flex and from what I've read, that's where some of the recent UM18s...
Forum: DIY Speakers and Subs   07-29-2015, 12:47 PM
Replies: 22
Views: 429
Posted By michaelddd
Nice. That'll loosen up the suspension but good....

Nice. That'll loosen up the suspension but good.

I really need to test out my UM18s. Seems that PE had a bad QC issue with this latest batch. I need to ensure all four of mine are good. Think...
Forum: DIY Speakers and Subs   07-29-2015, 12:45 PM
Replies: 22
Views: 429
Posted By michaelddd
The fact that you recalibrate is the smart move,...

The fact that you recalibrate is the smart move, here. End result is the same.
Forum: DIY Speakers and Subs   07-29-2015, 12:26 PM
Replies: 9
Views: 158
Posted By michaelddd
By the way, I take it your Rhytmik sub has a...

By the way, I take it your Rhytmik sub has a built-in plate amp? Are you sure it's dead-dead and not just "blown fuse dead?" Sometimes plate amps have fuses INSIDE the amp on the PCB and not just...
Forum: DIY Speakers and Subs   07-29-2015, 12:22 PM
Replies: 9
Views: 158
Posted By michaelddd
Absolutely, it would work well if the specs are...

Absolutely, it would work well if the specs are fairly close.

Most bigger subwoofer manuf's don't make their own drivers; they spec out what they need and contract a big speaker company like...
Showing results 1 to 25 of 759

 
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