mojave
I'm interested in trying some DIY stuff. After I get my second MFW-15 Turbo Kit, I will have two drivers available from the original batch of MFW-15's. I'd like to try to build something for a bass deprived friend or family member or even replace the Hsu VTF-2 in my office.

Could these both be used in a sealed sub with a single amp? Maybe some of the returned Submersive amps could be programmed and sold for use with a pair of these drivers.

A dual driver kit would help those with single drivers sell theirs and make them more likely to upgrade to the Turbo.

At the very least, are the parameters available for the driver?

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Mark_Seaton
mojave wrote:
I'm interested in trying some DIY stuff. After I get my second MFW-15 Turbo Kit, I will have two drivers available from the original batch of MFW-15's. I'd like to try to build something for a bass deprived friend or family member or even replace the Hsu VTF-2 in my office.

Could these both be used in a sealed sub with a single amp? Maybe some of the returned Submersive amps could be programmed and sold for use with a pair of these drivers.

A dual driver kit would help those with single drivers sell theirs and make them more likely to upgrade to the Turbo.

At the very least, are the parameters available for the driver?



A dual driver plan/kit isn't a bad idea.  I'll give it some thought.  I'll be pretty slammed with the SubMersive HP and Terraform XL matters the rest of this week, but I think we could come up with a few ideas.

Good suggestion!
Mark Seaton
Seaton Sound, Inc.
sales@seatonsound.net
773-290-8436
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mojave
Any more thoughts on a dual driver setup? Based on the Parts Express driver you referenced at AVSForum, I have about $340 worth of drivers to use on a project (if I was to buy them new and have them shipped). I'm sure Eminence would appreciate getting a some respectability back from a design that maximizes their drivers and uses a more robust amplifier. I like the look of my drivers and really don't care what the basket looks like.

With AV123 now closed, can you release the driver parameters? This could help the sale of drivers in the MFW-15 parts thread.

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mkruse
I have an MFW15 that has just started the "hum" and getting louder defect. I see that there are 2 parties that have competing solutions (V3 amps from Murrel which has a SHORT warranty, and the "turbo" at 1000 watt.)  I am NOT and audiophile, don't need overkill, need some security the solution will work, something that has a decent thump and no rattle.

I was hoping that someone with and unbiased opinion could answer a "newbie" question. Can't I just buy a Paradigm X300 which has roughly the same output specs, bypass all of the crap MFW 15 amp components, followed up by a correction using a PBK (perfect base kit)?

Help?
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sandbagger
mkruse

Yes Murrel is selling off the left over V3 amps that QSC got stuck with.
Yes there is always the Turbo, but will increase your output aprox 2X and give you better sound quality.

But we are also working on a stock type amp replacement and also a driver to go with it. http://www.seaton-sound-forum.com/post?id=4853297

Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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mojave
Surplus drivers are available for sale from Danny at GR Research. They are $79 each, but he has some that have some cosmetic damage that are being sold for $59. If you already have a driver (I have three), you could pick up another for a dual driver sub . . . if Mark would provide a design. Besides getting the Turbo kit, this gives us the opportunity to try our hand at DIY.

Here are the driver specifications based on Danny's measurements:

Re                        3.04        Ohms               fs                           15.0        Hz
Le                        2.07        mH                   Mms                      235.2        grams
QM                       6.62                                Mmd                      221.6        grams
QE                        0.34                               Cms                       0.476        mm/N
QT                        0.32                                Rms                      3.356        N*sec/m
Xmax                  13.02        mm                  Vas                       458.9        liters
Pmax                   225        Watts                 SD                         823.7        cm^2
Bl                        14.08        Tm                  VD                        1072.3        cm^3
Coil Diameter       2.50        Inches               EBP                         44.1       
Gap Height           0.375        Inches             Magnet Weight        112        ounces
Efficiency             0.44        %                     Winding Width       1.400        inches
SPL                     88.5        dB 1W-1m
                                                                               
                                                                                 
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sandbagger
I am not sure but I think mark has been busy
http://www.seaton-sound-forum.com/post?id=4967659&trail=20#8

Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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sandbagger
Guys...... YOU GOING TO LIKE THIS ONE>>>>>

While at marks shop yesterday picking up some things we got to talking about the whole DIY thing with the MFW drivers and that Danny has a bunch.....

Well.... We have an idea and its going to be a LOT of fun.... need to do a bunch of work on it but since I basically have all the parts needed, it shouldn't take that long to work everything out.

I wont let much more out of the bag YET, as until I have a working prototype and get some of the details all worked out we wont be 100% but..... OH if it does

Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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boober
Sound's very intriguing!
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sandbagger
I will be keeping the naming convention within the auto related stuff.....

I am thinking of calling it the Q_____  as it will get a lot of traction

Just a little teaser there

Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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Stereodude
I'm thinking this could be very fourtuitous four those people who have old drivers.
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mojave
Using a little foursight, I have purchased an MFW-15 driver to go with the three I already have. This should be a fun project.
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sandbagger
This should be a lot of FUN
Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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LilGator
Any update on this?
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boober
LilGator wrote:
Any update on this?


Asking for updates on this forum is a big time no no... 
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sandbagger
No, you can always ask, but if we dont have anything new to add, WE DONT!

I am not the type of person to spin or pump things up, if I dont have any solid info I dont see a need to share it.  


boober wrote:
LilGator wrote:
Any update on this?


Asking for updates on this forum is a big time no no... 
Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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LilGator
Fair 'nough
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mojave
My fourth driver arrived last week. Should I store it vertically or horizontally? I don't want to stretch anything by having it sit too long.
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nottaway
You could always clone the original and get a $300 sub for the price of a little MDF...... I'll help anyone with the dimensions PM me.
AKA NicksHitachi
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mojave
There is a nice build thread at AVS with 4 dual opposed subs using 8 of the MFW-15 drivers. The cabinets have an internal volume of about 6 cubic ft each.



Also, Erich H at AVS bought 230 of these drivers directly from Emminence. Here is his quote:

ERICH H wrote:
I realized that Eminence was within driving distance to me, and I read that they offer custom designs. So I thought it would be a neat DIY project before my busy season starts at work. They used to make a Lab10, so I spoke with Eminence first to see if they could resurrect the Lab10 with some slight changes. But the order needed to be around 500. I thought that was too much for a group buy. And less drivers would be more expensive.

Last week PassingInterest linked me to something where I saw the packaging box for the MFW-15. Well, I knew it was an Eminence box. I sent the specs to Lilmike and he said it would work well and would try to make a design for it.

So what the heck, I decided to call the guy I spoke with before at Eminence to see if they could simply start making that driver again, or to see if they had left over stock from when AV123 closed down. The guy said that it was really strange that I called because he had to take inventory in a certain warehouse that needed to be cleared by this week. They happened to have quite a few of those still sitting in the warehouse. He wasn't sure what he was going to do with them.

So because I'm insane, and figured this would be perfect for the idea behind DIYsoundgroup, I drove down and picked some up. I didn't drive a pickup truck.


He has a group buy available at DIYSoundGroup.com.
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sandbagger
Looks similar to what mark and I have been working on......

We are looking at using a 2.5Ft^3 box per driver.  using either 2 or 4 drivers, so you could build one 10ft^3 box with 4 holes in any configuration that works for you. Or you could do 2 drivers in a 5Ft^3 box or 2 of them or even 2 single or 4 single, what ever works for your room.  Heck even PE has a box the right size.

The amp will be fully optimized for this box size and driver, so all the eq and limiting is already done for you.  Just build a box, hook it up and turn it on, no need for external eq.

We are also considering doing boxes that you can load yourself.

BTW Danny has a bunch of the drivers from Santi for $79, he is just trying to recoup some of the money he lost.

Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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HuskerOmaha
Kevin,

I'm assuming the amp would be rack mountable like the Turbo kits?

Would this use the SA-1000 Dayton?

This might be a great summer project.

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sandbagger
YEP
HuskerOmaha wrote:
Kevin,

I'm assuming the amp would be rack mountable like the Turbo kits?

Would this use the SA-1000 Dayton?

This might be a great summer project.

Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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obie_fl
Kevin - I'm assuming you are talking about sealed/dual opposed boxes vice ported.  Sounds like a fun project.
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sandbagger
Lets see if I can make this as clear as mud

many different configurations are possible.....
All are SEALED

4X1 driver boxes
2X1 driver boxes
2X2 driver boxes
1X4 driver box

Placement of the drivers is up to you

While you can run a single off the amp, you really want to run 2 or 4drivers, 4 giving you the best bang for the buck.


obie_fl wrote:
Kevin - I'm assuming you are talking about sealed/dual opposed boxes vice ported.  Sounds like a fun project.
Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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