Bobbytwonames
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Trigger Man!
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Bobbytwonames
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Bobbytwonames
5,000+ posts
Trigger Man!
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Bobbytwonames
5,000+ posts
Trigger Man!
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- #4
I haven't metered the 12's yet. I'm still tuning the sub amp. I think the 12's are louder. I know it's only 12.5% more cone area but it seems like it's louder to me. They still get plenty low. I always check the lows with the 28 hz. rebassed version of Enter Sandman. The 28 hz. drop gives me an idea of what there doing comparable to the 8's. One thing I've noticed is that my voltage barely moves anymore. Is that because I'm wired to four ohms now? I might add a third SA 12 and wire them to 1.33 ohms. Is 1.23 cubes net enough for the SA 12's? I'm crossed over @ 70 hz. on my headunit right now. I haven't heard these 12's bottom out once on the Enter Sandman song. The 8's would bottom out on that song on a soft clip. I can't really get the 12's to a clipping point. They won't clip with the bass knob all the way up. What does that mean? Should I turn the gain up? I'm sorry this is so long. I know we are on a daily pitch count in here.
That means those particular subs are way more efficient than the 4 8s. Great info! It may also be because those subs are designed for small enclosures and you put them in almost double their specified volume.
This is surprising being that they are in an oversized enclosure. Then again, they are Sundown and niched towards SPL.
Only if you went sealed. I modified a box for my nephew for 2 SA-10s. It was 1 cubic foot sealed for both subs. Still have not heard them bumping after almost a year but he said they sound awesome.
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Bobbytwonames
5,000+ posts
Trigger Man!
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- #6
Sundown calls for 1.75 cubes for each 12" sub. That adds up to 3.5 cubes. My box is approximately 3.7 cubes. They also call for 26 square inches of port per sub which equals 52". My box has 43¾" square inches of port. They suggest a tuning of 35 hz. and I'm pretty sure that my box is tuned to 34 hz. I'm happy with them so far. I guess 12.5% more cone area makes a difference. The power has actually dropped from 3,500 watts @ 1 ohm to 2,750 watts @ 4 ohms. I wish I could meter it. My 8's were pretty sick.
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Bobbytwonames
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Trigger Man!
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- #7
This site is quirky now.
I think they even suggest that for the newer models but I’ve seen people mainly go 2 cf 32-35 hz.
I read the specs wrong. I was focused on the sealed side. Then according to the current specs, you are right on the money. I do know Sundown did a new run of the Classic, which would explain the new specs. Being that your port is smaller than specs, it controls excursion more than the larger area specs. Maybe a 3rd one will ruin the magic.
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Bobbytwonames
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Trigger Man!
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- #10
I rebaffled my 4 - 8" box for the two Sundown 12's. They are the black bottoms. I'm about 1.85 cubes each.
I'll stick with two. I picked them up for $250. I also picked up a D4S minimaxx 1004 for $100. My Crescendo S4 decided to take a nap.
That hurts. Those things are a thing of beauty. Are you going to warranty or revive it? Because, you know... It would make a good As Is gift. And my birthday is coming up....
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Bobbytwonames
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Trigger Man!
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- #12
Iy powers on and everything. It has a beautiful blue light shining out from under my passenger seat at night. Crescendo thinks maybe something got ****** up into the fan. I was shedding a kit of skin when I got sick with DRESS Syndrome. I'll post a video. It was fricking wild. This is a picture of the skin that I had to sweep up twice a day after I showered. You can only imagine how much skin was in my truck. I think that's what caused my Crescendo to crash. I was red like that from the neck down for three months.
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I just did a quick read of DRESS, it sounds harsh. The "positive" side is that it is temporary on most patients. Since you said you had it for 3 months then I assume you have recovered or are almost there. I am glad you are doing better. Now you must watch like a hawk the meds prescribed lest something similar slips by the doc's attention.
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Bobbytwonames
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Trigger Man!
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There isn't a cure as of now. Prednisone is one of the more popular treatments. I've been tapering off of it since January. It changed the way I look. I lost 40 pounds in 30 days. I left the hospital at 139 pounds. Please don't feel sorry for me. I'm grateful to be alive. DRESS has a 5% - 10% mortality rate. This is a link to a profile the DRESS Syndrome Foundation did on me. Robert Dillon. I think I'm losing my headunit. https://www.dresssyndromefoundation.org/meet-our-patient-and-family-panel
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metalheadjoe
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Unapologetic prick
Why did you change your setup?
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Bobbytwonames
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Trigger Man!
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- #16
I wanted to get a 150 in the cab. I should've just got a bigger amp. I tried two Sundown U 15 V2's but the box was too small. Then I took my box builder's original advice and got two 12's. I have an extra box now. It's 4.65 cubes net tuned to 35 hz. I made about a $700 mistake. I actually had to buy my 4 - 8" box back for $200. I eventually want to get two AB HD12's. I should've listened. This is the 2 - 15" box. I'm sorry that the picture is sideways.
I see. It is then an allergy one is born with so any cure would probably require a change in DNA. 139 lbs. is light. The last time I weighed that was in Jr. High.
As for feeling sorry for you, it is not that. We just want the best for people, more so if those people are in a community one is involved in. We may be perfect strangers but through our postings we see glimpses of each other's lives. That forms IMO a kind of bond that one grows fond of. So no sorry feelings here, just the hoping hard for the well being of all in here.
Is this a reference to your noggin' or your radio?
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Bobbytwonames
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Trigger Man!
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- #18
My Kenwood headunit. One turned up bass note and she turns off. I can only play low volume. I lost my noggin a long time ago. The last time I weighed 139 was 7th grade. I was 152 in 8th grade. I was around 205 last Summer and 235 in 2019.
Have you tried to raise the volume with the amps off? I would assume bad speakers would cause this kind of issue, but you are using RCAs so that rules out that assumption. Only external culprit left would be bass vibrating a connection somewhere.
Wow. Nice build bobby. Weren't you working on some boat project few months ago? On some other network or website I guess, I saw this. The setup for the 4 small speakers is the one I'm interested in. The inputs, negative to negative, positive to positive, all parallel connections. Outputs negative and positives at each end of the speakers. Did you try this out yet or still setting things up? Making it work and seeing enough watts or electric gets to each speaker is the part. Great looking speakers. In Las Vegas, very hot time this time of the year. I know they're popular hobby goers in Las Vegas.
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