Dayton Titanic Mk III Subwoofer's have been discontinued - now what;) - AVS Forum
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post #1 of 43 Old 05-29-2013, 06:52 PM - Thread Starter
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Hi, I am new to the forum. Have been following the Tekton thread for abit. I have recently diy'ed a SVS PB2 Plus subwoofer. I used the 12.2's that were in one that I use to own. But the amp I used for my project was out of an SVS PB2 Ultra and seems to have more power. I would like to replace the drivers because on movies, I can only turn the amp volume up to 1.5 and I get a "chuffing" sound at stronger low bass notes. I have tried plugging different ports with no luck. Receiver gain is between 0 and -5. I am guessing I need higher power drivers. I have it paired with an SVS PB13-Ultra.

My question is, what and where are you guys using and buying drivers????
I need a 12", single coil, 4 ohm, high power and excellent sound quality. I heard good things about the Dayton Titanic Mk III Subwoofer's. They have been out of stock at Parts Express for 3 months and now just before stocking date I got an email that they are discontinued. The only other option would be the Dayton reference HO subwoofer. Can anyone testify to the quality of this driver? They have a power range of 700/1400 watts. I think $150 each seems like a fair price. Any recommendations would be appreciated. I watch 50% Movies & Music. Want to stay under $200 a driver. Here are some picks of the sub I built. Thanks, Scott


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post #2 of 43 Old 05-29-2013, 07:23 PM
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Originally Posted by scottvamp View Post

I would like to replace the drivers because on movies, I can only turn the amp volume up to 1.5 and I get a "chuffing" sound at stronger low bass notes. I have tried plugging different ports with no luck.
Chuffing is caused by insufficient port area. Plugging ports will only make matters worse, as that reduces port area.
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I heard good things about the Dayton Titanic Mk III Subwoofer's. They have been out of stock at Parts Express for 3 months and now just before stocking date I got an email that they are discontinued. The only other option would be the Dayton reference HO subwoofer. Can anyone testify to the quality of this driver? They have a power range of 700/1400 watts.
Watts mean little. T/S specs mean everything. There are many twelves with similar specs to the Titanic, but if the Titanic specs aren't compatible with your cabs that's moot. And different drivers won't cure chuffing.

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post #3 of 43 Old 05-29-2013, 07:26 PM
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http://www.parts-express.com/pe/showdetl.cfm?partnumber=295-512

I would assume the Ultimax is the Titanic's replacement, that has an improved motor & looks much better IMO.
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post #4 of 43 Old 05-29-2013, 07:45 PM - Thread Starter
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Originally Posted by fish323 View Post

http://www.parts-express.com/pe/showdetl.cfm?partnumber=295-512

I would assume the Ultimax is the Titanic's replacement, that has an improved motor & looks much better IMO.
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Thanks fish323. I missed those because I used 4 ohm only in my search. That makes since. Those Ultimax's look awesome.
Chuffing is caused by insufficient port area. Plugging ports will only make matters worse, as that reduces port area.
Watts mean little. T/S specs mean everything. There are many twelves with similar specs to the Titanic, but if the Titanic specs aren't compatible with your cabs that's moot. And different drivers won't cure chuffing.
Hi Bill, this is an exact box and ports of the SVS model. I have three 4" ports. That should be enough for port area. Is there something I am missing? Maybe to much acoustic foam stuffing. I put in 3lbs through out the inside of the box. Any help would be appreciated.
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post #5 of 43 Old 05-29-2013, 07:47 PM - Thread Starter
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Thanks fish323. I missed those because I used 4 ohm only in my search. Those Ultimax's look awesome.eek.gif
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post #6 of 43 Old 05-29-2013, 07:56 PM
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Originally Posted by scottvamp View Post

Thanks fish323. I missed those because I used 4 ohm only in my search. Those Ultimax's look awesome.eek.gif

They are but I think they might take/want a little larger enclosure.

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post #7 of 43 Old 05-29-2013, 08:16 PM
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Hi Bill, this is an exact box and ports of the SVS model. I have three 4" ports. That should be enough for port area..
Not necessarily. If it chuffs, it isn't for the power you're putting into it. But it also could be a warning sign that you're just pushing it too hard.
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Those Ultimax's look awesome
That doesn't mean they will work better, or even as good as, what you have, or if they will even work in your cabinet. Chances are they won't, Qes/Qts is way too high for best results in a ported cab.

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post #8 of 43 Old 05-29-2013, 08:23 PM - Thread Starter
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OK - I will have to figure out this "chuffing" problem and I might not need them.... for now;) The box is about 7 cubic feet with ports and drivers. They request 4 not including driver and ports. So I should be in the ballpark. I used 1 lbs of acoustic foam per 2 cubic feet. Not sure if that is a problem.
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post #9 of 43 Old 05-29-2013, 08:35 PM
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Originally Posted by scottvamp View Post

I used 1 lbs of acoustic foam per 2 cubic feet.
Why? Vented cabs should not be stuffed, only lined, with an inch or two of damping.

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post #10 of 43 Old 05-29-2013, 08:57 PM
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You said your box is 7 ft3, and has three 4" ports. What are the port lengths?

Does the amp have the feature quoted below
Quote:
- 4 Position Tune Switch (25 Hz, 20 Hz, 16 Hz, Bypass)

Which setting do you have it on?

Also, how do you have the PEQ set?


Right off the bat I will say to open all ports, put the tune switch to 25hz and give it a try. If that's what you have been doing already, then set the PEQ to 20hz, the Q to "high", and the "level" to the mid position and give it a try.
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post #11 of 43 Old 05-29-2013, 10:48 PM - Thread Starter
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The box is not stuffed for say. It IS lined on all six sides.

Hi Jay1, I am plugging one port right now and set to 20hz. At first all ports were open at 25hz. Everything I have tried so far has produced chuffing noise at high levels. But I have yet to turn the amp up past 3.5 for even music. I need to play around with other settings. I will give your suggestion a try. The PEQ is set to off. My SVS PB13 Ultra has more settings than I even know what to do with - lol

I have done some reading and I seem to be doing everything right as for a flared ports and length. I do seem to be driving the subs hard, but the "level" is only at 1.5 for movies. I have just ordered a pair of Dayton Ultimax 12's. Parts express has a no question asked 45 day return policy. This amp was made for the SVS Ultra drivers. Not sure if it has more power than the amp used with the plus drivers.

Thanks for all the input so far guys.smile.gif
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post #12 of 43 Old 05-29-2013, 11:47 PM
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Quote:
Originally Posted by scottvamp View Post

The box is not stuffed for say. It IS lined on all six sides.

Hi Jay1, I am plugging one port right now and set to 20hz. At first all ports were open at 25hz. Everything I have tried so far has produced chuffing noise at high levels. But I have yet to turn the amp up past 3.5 for even music. I need to play around with other settings. I will give your suggestion a try. The PEQ is set to off. My SVS PB13 Ultra has more settings than I even know what to do with - lol

I have done some reading and I seem to be doing everything right as for a flared ports and length. I do seem to be driving the subs hard, but the "level" is only at 1.5 for movies. I have just ordered a pair of Dayton Ultimax 12's. Parts express has a no question asked 45 day return policy. This amp was made for the SVS Ultra drivers. Not sure if it has more power than the amp used with the plus drivers.

Thanks for all the input so far guys.smile.gif

Well, I can tell you right now, the Ultimax 12's will not work very well ported in that box. They will work pretty well SEALED in that box. That will also remove your chuffing issue.

Like Bill already pointed out, the drivers dont really have anything to do with the chuffing.... Are you sure your box is sealed up air tight, including where the ports are mounted?
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post #13 of 43 Old 05-30-2013, 08:58 AM
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But I have yet to turn the amp up past 3.5 for even music.. the "level" is only at 1.5 for movies.
The setting of the volume control does not indicate how much power is being output. Google 'gain staging'.

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post #14 of 43 Old 05-30-2013, 10:44 AM - Thread Starter
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I am running 2 subs so the gain gets a little more tricky. I ran the calibration on my Onkyo 818. I may end up going the sealed route. I will do some more different configurations this evening. Yes, the box is sealed well, matter of fact, I get a small noise from the air coming out of the holes on the RCA inputs on the amp - lol
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post #15 of 43 Old 05-30-2013, 06:09 PM - Thread Starter
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Quote:
Originally Posted by Jay1 View Post

You said your box is 7 ft3, and has three 4" ports. What are the port lengths?

Does the amp have the feature quoted below
Which setting do you have it on?

Also, how do you have the PEQ set?


Right off the bat I will say to open all ports, put the tune switch to 25hz and give it a try. If that's what you have been doing already, then set the PEQ to 20hz, the Q to "high", and the "level" to the mid position and give it a try.

I tried your the PEQ settings Jay1, opened all ports and it helped to get more spl before "chuffing" comes into play but now I have noticed the "chuffing" sound is coming for the drivers themselves. One more than the other. They have been used for few years and have been packed away for this project.

Should the chuffing sound come directly from the ports or from the drivers. At lower volumes they sound great. I might just be over driving them. Though they are not bottoming out.
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post #16 of 43 Old 05-30-2013, 06:33 PM
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There definitely shouldn't be anything resembling a chuffing sound from the drivers, that's strange...

Do you have gasket foam type material on the back of the drivers?
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post #17 of 43 Old 05-30-2013, 06:54 PM - Thread Starter
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Quote:
Originally Posted by Jay1 View Post

There definitely shouldn't be anything resembling a chuffing sound from the drivers, that's strange...

Do you have gasket foam type material on the back of the drivers?

Yes, there is gasket foam on the drivers, amp and ports. When I push on the drivers, they are nice and smooth, no scratching.
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post #18 of 43 Old 05-30-2013, 07:05 PM
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There's something not right going on? You should not have audible port noise with that peq on at all.
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post #19 of 43 Old 05-30-2013, 07:42 PM - Thread Starter
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I don't hear the noise from the ports when I put my ear close to them. It seems to come from the drivers. Three 24" dual flared 4" ports, and an identical size box that the drivers were originally in, SVS PB2-Plus. My subs are placed on the front stage, about a 1/4 in from the corners. It was the most popular placement for duals. Ports are facing up.
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post #20 of 43 Old 06-06-2013, 02:14 PM - Thread Starter
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The Dayton Ultimax sub's came in yesterday. They are really nice looking subwoofers. Gonna install them tonight......
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post #21 of 43 Old 06-06-2013, 02:27 PM
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COOL! Will be looking forward to your impression's. Oh and don’t forget pic’s. Are you able to measure and graph your system?

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post #22 of 43 Old 06-06-2013, 02:37 PM - Thread Starter
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Hi Steve, no sorry no way to measure. The theater is in an open floor concept space also. Will post pic's tonight:)
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post #23 of 43 Old 06-07-2013, 06:02 PM - Thread Starter
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Sorry guys, tried to post sooner with my iPhone and was having trouble.

I was following the Tekton thread and have really been put off.....

I installed the Dayton's and the mounting holes had to be opened up at least a 1/4 inch. So far, the subs are really deep and clean. The build quality is excellent and the cone area is bullet proof.
I am getting the same sound of chuffing but at a higher spl. I have sealed all three ports and like the bass I am getting. I now think I am getting air turbulence from my internal bracing.
Going to maybe keep the svs drivers for another project unless anyone wants them.
The Ultimax's look fantastic!!!
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post #24 of 43 Old 06-07-2013, 06:04 PM - Thread Starter
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And the black box:) time to break them in this weekend!!!!
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post #25 of 43 Old 06-08-2013, 12:13 AM
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COOL! Let us know man.. Thanks for the pic's! cool.gif

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post #26 of 43 Old 06-08-2013, 03:08 AM
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That's one big box! I'm thinking of going with a DIY set up too. I'm kind of nervous about it since I've never done one.
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post #27 of 43 Old 06-08-2013, 05:58 AM
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Quote:
Originally Posted by GusGus748s View Post

That's one big box! I'm thinking of going with a DIY set up too. I'm kind of nervous about it since I've never done one.

Oh! Are you thinking sealed or vented? That’s always a great option if a guy cares to take it on.

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post #28 of 43 Old 06-08-2013, 07:55 AM
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Oh! Are you thinking sealed or vented? That’s always a great option if a guy cares to take it on.

Vented/Porter!
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post #29 of 43 Old 06-08-2013, 08:19 AM
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Quote:
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Vented/Porter!

Your 12D has a port, (vented) that's the tube at the front bottom or your unit. Sealed has no port.. the unit is totally enclosed. I think that's what you're asking?

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post #30 of 43 Old 06-08-2013, 09:26 AM
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I meant I want to do a porter DIY, but I've got to concerns. 1) I've never done one. 2) It might not blend well with my current KLipsch RW-12D.
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