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sandbagger
Just wanted to let everyone know that the Turbo Kits are in stock and ready for order.
Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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waynew

Still loving my Turbo!  Here are a few pics:

-Wayne
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patmacav

Well.. finally got my first Turbo kit this afternoon. Thank you Kevin, for working out the logistics with me. I really do appreciate what you did. I know you're enjoying the Axpona just now and all it has to offer, so have fun. Very nice kit. Well packaged and put together, and a big thank you to You and Mark Seaton for all you've done to maximize the design of this box, which is no slouch to begin with.

I have 4 MFW 15s and may Turbo them all over time. I've been very fortunate with my MFWs, but for one early amp replacement and a pesky ground loop hum in my HT room, they've held up rather well over time. Maybe that's because I set the MFW amp gain at 10 o'clock and no higher and only stepped up the LFE from my AVR about 2 DB hotter then what the MCACC settings call for. I've always had plenty of bass that way and except for the occasional weird noise now and then, caused by some extreme LFE in some of today's Blu ray and DVD mixes, they've functioned fairly well within their limits.

I figure once they're all turboed, I'll likely find another use for the drivers, but eventually the amps will become available for some other lucky MFW owners out there that haven't had as good luck as I've had with mine. This first amp out, actually looks good upon visual inspection and it's not been turboed or replaced because the amp was bad. It's just being done because I want to see if you've built a better mouse trap and a safer sub. I'll get back to you all, after it's been running for awhile and hopefully then again after I've done some better tuning and calibration than the minimal effort I've put into my system thus far.

My system consists of Maggie 3.6R mains and IIIa surrounds driven by a VSX 59TXi AVR as a pre into Emotiva XPA1s on my mains with the surrounds driven by the AVR. My source is primarily the OPPO BDP 95, which is a very nice piece. The AVR and Maggies I picked up used and everything else was new. Eventually I need to do some work on the TT end of things, but all in due time.

I've taken everything apart and installed the back plate gaskets on this first Turbo and just took a break for some dinner. I'll let it sit over night for now while I meditate on the instructions for how to install the new driver properly. Everything is straight forward so far and has gone without a hitch.

More to follow later.

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patmacav

Well, I got 'er done. I did have one major gaffe in this little project. I should have gone to bed when I first thought about it instead of trying to wrap things up late last night, but no.. instead I finished it up and missed the fact that the fiber glass cabinet filler was still sitting on the floor next to the cabinet instead of inside the cabinet where it belonged when I was done.

Oops.  

Oh well..  today was another day and I just did a little undo and redo. Always a pleasure being humbled by the little mistakes in life.

Oh.. and one other thing. I used one of the 1/8" rubber washer spacers along with plastic spacers provided in the kit that is used to replace these rubber washer spacers to obtain some clearance between the driver surround and the cabinet face plate. Although I did my best to center the driver in the cabinet hole (seriously it was pretty well centered), the cabinet face plate hole was almost touching the surround while the opposite side of the driver surround had about 3/16" clearance. Adding the 1/8" rubber washers provided a minimum of 1/8" clearance. Somewhere on the install thread it said not to do this, but it seemed like the right thing to do in this case. 

I'm letting it play for a while now. Before anything else, the first thing I did was recalibrate my system with the sub using my AVR's MCACC. It had never set my sub at +8 db hot before today. It's always been set at negative whatever. I'm thinking that since neither the amp or driver ever had any kind of signal sent through them prior to the calibration process, they may need a little break in to loosin things up a bit. Then I'll recalibrate again later. More later..

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sandbagger
Pat

Sorry about the missed phone call earlier, I was passed out.  I had a 102F fever last night by the time I got back from the Axpona show in Chicago. 

As for running 2 drivers off a single amp, I wished but the amp will not like the 2ohm load.

No problems adding the rubber spacer, the surround actually will get smaller and pull away from the face plate with movement in either direction.

You dont mention where you have the gain on the turbo amp but since your processor set it at +8 I would bump it up a bit to get the processor down around a zero.   You should also make sure you have the PEQ set to about zero unless you know there is a place were you need to pull down a peak.
Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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Mark_Seaton
Adding to Kevin's comment about the volume, remember that volume knobs have no relation from one amp to another.  So the correct setting for one amp can be dramatically different from another, and I do believe that is the case between the MFW amps and the Turbo amp where you will want a higher setting on the Turbo amp.  In the end this gives you much more fine adjustment of the volume.
Mark Seaton
Seaton Sound, Inc.
sales@seatonsound.net
773-290-8436
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patmacav

Kevin,
No problem at all. Sorry to learn about how you're feeling. Hopefully you can get some rest. You had a really long weekend with lots of drive time and that can wear a body down, not to mention all the people.

About the gain, I started it at 10 o'clock, I just bumped it to 11, we'll see what that does. Makes total sense to adjust it to the point where the AVR will set it at about zero. I think the trouble with the original amps started when you set the gain much over 11 o'clock or so. I know I've kept mine all set at 10 and never had a problem. I am running the Turbo next to the original MFW so I still have two subs. The initial run was just with the new Turbo alone set at 10 o'clock with both the driver and amp new out of the box. I just recalibrated to about zero with both subs running and the Turbo amp gain set at 1 o'clock. The EQ level is at zero. Thank you both so much. I hope you're feeling better soon Kevin.

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micah3sixty
I have a 2008-ish original MFW-15 and wonder how long these turbo kits will be available as I may not be able to snag one of these for a year or so.  I haven't had any problems with the original amp or driver, but have been intrigued by the reviews of the turbo kit.  Also, I wonder how the MFW-15 with turbo would work in outdoor capacity, such as for backyard cinema etc.  Thanks!
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Dweiner
So I received 3 turbo upgrade kits. All I can say is WOW. I HAVE 9.2 surround sound home theatre system and this upgrade made watching movies fun again. The punch in the new upgrade is just outstanding. It was a very simple job to replace and would recommend to anyone. My room is sound proofed but yet my kids told me the house was vibrating everywhere.
David.
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DoBerry
MWF-15 (x2) plus x-tatic and x-voce owner since January 2008.

Just last night I got the buzz indicating one of my 15s has died.

You that have turbo'd, is it better than a new sub purchase?

Thanks,

Doug
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ChadT
DoBerry:  I have two MFWs and did the Turbo upgrade on one of them that had a bad amp.  I opted to go that route because I like the aesthetics and form factor of the MFW cabinet.  Also, I researched and one would be hard-pressed to find a sub to the level of performance of the Turbo for what the Turbo upgrade costs.  But I haven't actually tested other subs in my room to verify actual performance.

I will say that the Turbo gives great performance and at some point down the road I'd like to upgrade my other MFW.
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shawn784
I am interested in the turbo upgrade.  I have sent emails to the address in the first post and also to Kevin.  Can someone get in touch with me so i can place an order.

Thanks
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sandbagger
I took the weekend off as it was a holiday.

I will be catching up on all the emails today after I get home from my day job, sometime after 7pm tonight
Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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DoBerry
I emailed last night.  I think to orders@motor......
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DoBerry
It's official.  I am in line for a Turbo.
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micah3sixty
What is the waiting period for the turbo kit?  My amp finally gave out and I either need a new amp, or a turbo upgrade.
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Mark_Seaton
I think Kevin has the lead time back down to 1-2 weeks at the moment, but please confirm with him by sending an e-mail to orders@motorcitycustomaudio.com.
Mark Seaton
Seaton Sound, Inc.
sales@seatonsound.net
773-290-8436
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sandbagger
Wait time is about a week or so right now.

If interested please email me
Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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shawn784
I have had the turbo kit for a few days now and have a few questions.

1.  I was watching inception and a few times during the movie the amp went back and forth from blue to red.  I read earlier in this thread that even if the amplifier goes to solid red and stays there that the amp and sub have some sort of built in protection.  Is my understanding correct?

What i am trying to get at is there any risk of damaging the amplifier or subwoofer?

With other speakers i have had in the past. I would look for an audible distortion or clipping with the subwoofer.

2. It stated earlier in thread that its a bulletproof design of the amp paired with the speaker.  From what i have gathered is that is nothing to worry about playing this subwoofer at very high levels as if you reach the limits of the amp or speaker it will turn itself down by the amp?

If you could explain that in more detail i would appreciate it thanks.

So far i have been very impressed i just want to make sure i am getting the most out of the speaker but at the same time not risking damaging anything.
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sandbagger
Please see my comments below in blue

shawn784 wrote:
I have had the turbo kit for a few days now and have a few questions.

1.  I was watching inception and a few times during the movie the amp went back and forth from blue to red.  I read earlier in this thread that even if the amplifier goes to solid red and stays there that the amp and sub have some sort of built in protection.  Is my understanding correct?
Yes, there is protection that has been adjusted based on the driver/cabinet, flickering of the light to red is of no concern, if you find that the light is on solid red, you probably should be thinking of getting a 2nd Turbo
What i am trying to get at is there any risk of damaging the amplifier or subwoofer?
No but I do not recomend extended periods of time with the light solid red
With other speakers i have had in the past. I would look for an audible distortion or clipping with the subwoofer.
Most amps have some sort of limiting that protects only the amp as the manufacturer has no idea what speakers you will be using.  This is one major benefit of the kit, its designed to work together.
2. It stated earlier in thread that its a bulletproof design of the amp paired with the speaker.  From what i have gathered is that is nothing to worry about playing this subwoofer at very high levels as if you reach the limits of the amp or speaker it will turn itself down by the amp?
Use at very high levels is not an issue as long as the above is followed.  If used at high levels I would recommend good ventilation for the amp though as it will create a fair amount of heat.  Under normal HT use it does not get much more than warm to the touch
If you could explain that in more detail i would appreciate it thanks.

So far i have been very impressed i just want to make sure i am getting the most out of the speaker but at the same time not risking damaging anything.
Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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DoBerry
Kevin,

Finally got a day to do the install.  About an hour and a half.

Straight forward instructions.  Perfect fit and finish.

Great sound!

Thanks Kevin for a great product.

Saving my money for a 2nd turbo.  I'll be in contact as soon as I can.

Doug

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varmintx
You will let us know long in advance should you decide to stop manufacturing these, correct?  It took quite a while to accumulate the necessary funds to get one, but of course, now that I have one, I want to upgrade the other two.
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sandbagger
varmintx wrote:
You will let us know long in advance should you decide to stop manufacturing these, correct?  It took quite a while to accumulate the necessary funds to get one, but of course, now that I have one, I want to upgrade the other two.


No intentions of stopping manufacturing of these any time soon

If that were to ever happen I would make a post here about doing so.
Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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cconklin1
Holy mother of Pearl! My amp and driver showed up at my door stop the other day. I almost fell over trying to pick up the DRIVER. What a BEAST! The amp was a piec of cake compared to the driver! Hope to get them installed tonight!
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sandbagger
you didnt look at the shipping weight did you

There is a reason shipping is not cheap on the kits
Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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