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NEW MFW-15 amps (May 2010) *pics* - Page 70

post #2071 of 2590
My mfw15 has a sealed chamber where the amp plate goes, it only has a small hole about 3/4" were wire goes to driver and Q adjustment board.
post #2072 of 2590
Those holes are not well sealed if at all.....

Quote:
Originally Posted by razafina View Post

My mfw15 has a sealed chamber where the amp plate goes, it only has a small hole about 3/4" were wire goes to driver and Q adjustment board.
post #2073 of 2590
I guess I will be using spray foam to seal the cavity. So I can do what I think I can do.
post #2074 of 2590
Quote:
Originally Posted by razafina View Post

I guess I will be using spray foam to seal the cavity. So I can do what I think I can do.

I'd think twice before cutting all those holes into your cabinet! How about a small fan outside the sub, blowing across the plate amp? My old v2 amp also got quite warm during use, and lasted about a year before humming off into the sunset.

Cutting those holes would surely ruin any potential resale value, or make it difficult to upgrade to a Turbo or other future MCCA plate amp...
post #2075 of 2590
Quote:
Originally Posted by razafina View Post

My V2 amp vented a cap near a choke or coil, it was 22uf or 470uf at 100V(I have to check again and verify), I think is the pre audio board not the power supply and output board driver. I replace it and the other caps mention and its back and running. I will problably be putting a fan on the bottom by raising the bottom, making a hole for a fan(3" to 4" like computer fan) that will be install in the bottom. And making a couple of holes on the side to vent the hot air and help keep the amps components cool.

A passive option would be best. I have often thought of ordering some heat sink and mounting it to the back where the hottest components are. This would be the easiest and should provide enough cooling for that amp.

I have since converted a pair of original MFWs to sealed to work with 4 other sealed MFWs for a total of 6. I'll say 2 or 4 sealed do a good job in my room down to 10, and 6-8 are perfect.

Converting these cabinets to sealed is pretty easy, I pulled amp and top circuit board sealed up holes and port slot inside. Net volume is a bit large I prefer the 2.5ft3 per driver I designed but the ~3ft3 per driver of the original MFW does fine. Excursion is less controlled than I like, I can't beat on them quite as hard as I can the ones I built.

Anyways its an option for those with multiples if you run out of amps. About 250W per driver is plenty. I don't think many people would be happy with just one sealed in any room.....
post #2076 of 2590
Ok, the fan would be blowing the internal hot air, The purpose is to cool off by using external cooler air. I am also thinking about turning the boards and the transformers from internal to external and fabricating a pexiglass or metal cage. I would be using the same threaded hole that are use for the boards and the transformer. I think that will be a better alternative, than cutting holes and I can mount a circuit that will come on when ever it gets more that say 90 degrees inside the fabricated cage. What do you guys think.
post #2077 of 2590
All - I just wanted to post how helpful Murrel is to resolve issues with the MFW15's. Thanks for all you do!
post #2078 of 2590
I ordered one of Murrel's V3 amps a few days ago. I hope it comes in soon!
post #2079 of 2590
I had placed my order for (3) V3 amps the first week of Oct and I just received the FedEx shipping notice. Not too long of a wait. :-)
post #2080 of 2590
How did they turn out? I just ordered one...
post #2081 of 2590
Got my V3 today. Easy install and runs much cooler than my past v2's( i went through 2 of them). haven't had a chance to crank it because the kid was sleeping already but should get to drive it hard this weekend. Thanks Murrel! Celebrated with a can of Ten Fidy.
post #2082 of 2590
I got my shipping notice! I can't wait until it gets here. Time to buy some new movies.
post #2083 of 2590
Quote:
Originally Posted by GobbityGotz View Post

Got my V3 today. Easy install and runs much cooler than my past v2's( i went through 2 of them). haven't had a chance to crank it because the kid was sleeping already but should get to drive it hard this weekend. Thanks Murrel! Celebrated with a can of Ten Fidy.

You are welcome!

And I am glad that you enjoy our beer!

Have a great weekend!
Murrel
post #2084 of 2590
Anyone interested in selling a sub, my friend keep asking me to buy one of mine. He lives in NJ.
post #2085 of 2590
murrel is very helpful when it comes to these things! My amp just crapped on me and murrel is about a month and a half wait he said, so i am going external amp behringer inuke 1000dsp. We chatted and he suggested it so heck yea im going to try. Ill let you know how it turns out.
post #2086 of 2590
Quote:
Originally Posted by tjwashow View Post

murrel is very helpful when it comes to these things! My amp just crapped on me and murrel is about a month and a half wait he said, so i am going external amp behringer inuke 1000dsp. We chatted and he suggested it so heck yea im going to try. Ill let you know how it turns out.

probably not a bad plan, someone could probably get a good working set of filters with a little effort and a measurement rig.... Prob want to high pass at like 15-19hz though to keep out of trouble with excursion......
post #2087 of 2590
Thanks Murrel! I finally installed my V3 amp tonight. Here are some pics.
LL
LL
LL
LL
LL
post #2088 of 2590
I had to make a adapter cause my V1 amp uses bullet connectors while the V3 uses spade connectors.


V1 amp on top, V3 amp on the bottom:








Ready!

post #2089 of 2590
Anyone interested in a couple of MFW's with the v3 amps in em?

http://emotivalounge.proboards.com/i...d=20824&page=1
post #2090 of 2590
Quote:
Originally Posted by NumLock View Post

Thanks Murrel! I finally installed my V3 amp tonight. Here are some pics.

Very nice pictures! I am glad all is working well! Also good to see that that Fed Ex is getting the amps to you with little or no damage to the box!


Thanks
Enjoy!

Murrel
post #2091 of 2590
Quote:
Originally Posted by NumLock View Post

I had to make a adapter cause my V1 amp uses bullet connectors while the V3 uses spade connectors.

Great pics.


Murrel

Any chance you can include the adapters, with the 4 V3's I ordered from you, in case mine use bullet connectors as well?

HH
post #2092 of 2590
Quote:
Originally Posted by HuskerHarley View Post

Great pics.


Murrel

Any chance you can include the adapters, with the 4 V3's I ordered from you, in case mine use bullet connectors as well?

HH

Sure can. I will do my best to remember. Your amps hopefully will be in my shop for my testing sometime next week.

have a great day
murrel
post #2093 of 2590
Wouldn't have been easier to just clip the bullet ones from the woofer and add female spades there? Or was length the issue?
post #2094 of 2590
Quote:
Originally Posted by streamerlover View Post

Wouldn't have been easier to just clip the bullet ones from the woofer and add female spades there? Or was length the issue?

Women tell me "length doesn't" matter.
post #2095 of 2590
Just received my V3 amp recently and went to install it. Is there an easier way to deal with the bullet to spade connection issue than just cutting the bullets off the driver wires and slapping on some spade connectors?

Also, thought I'd share a pic of my old amp. It went out with a bang as you can see.
LL
post #2096 of 2590
Quote:
Originally Posted by Down View Post

Just received my V3 amp recently and went to install it. Is there an easier way to deal with the bullet to spade connection issue than just cutting the bullets off the driver wires and slapping on some spade connectors?

Also, thought I'd share a pic of my old amp. It went out with a bang as you can see.

Please make sure that your driver is not damaged, would hate to see you damage the new amp.

Murrel
post #2097 of 2590
Quote:
Originally Posted by murrel View Post

Please make sure that your driver is not damaged, would hate to see you damage the new amp.

Murrel

How exactly would I know whether the driver was damaged?
post #2098 of 2590
Quote:
Originally Posted by Down View Post

How exactly would I know whether the driver was damaged?

Gently with both hands push the driver in and out. Make sure it moves freely with no resistance.

Murrel
post #2099 of 2590
Quote:
Originally Posted by streamerlover View Post

Wouldn't have been easier to just clip the bullet ones from the woofer and add female spades there? Or was length the issue?

I wanted to fix my old amps just for fun so I left the bullet connector on there.
post #2100 of 2590
Quote:
Originally Posted by murrel View Post

Gently with both hands push the driver in and out. Make sure it moves freely with no resistance.

Murrel

Or you could just hook up your nice new amp and if you see smoke, its probably bad......
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