sandbagger Show full post »
stevesatch
Obie, were they bought prior to Nov of '08?
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mojave
I forgot that the first ones that failed were the second batch of V1 amps. I thought it was funny that when I sold my amps (both from the first batch of subs) I noticed that the amp board actually said v. 2. I wonder if the v. 1 amps were never sold and we might all be off by a number. Has anyone else seen this?
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Murrel
mojave,

In this case the board rev. has nothing to do with the amp rev. All V1 amp output boards were a through hole design. The V2 amp output board was a surface mount design. The power supply was the same for the V1 and V2. This power supply board was also used in the UFW/ULW amps with a few component changes. If you were to look at the power supply boards on a ULW/UFW they say MFW V2.

Murrel
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obie_fl
Steve - I think I took delivery in August 08 on my pair.  Only problem I had was a humm which I fixed by re-routing the internal cable in one of the boxes.  They shipped me an extra amp which I never took out of the box so I'm not sure of the vintage of the spare amp.  Every now and then it pays to be an early adopter I guess, but then again this was the bizarre world of AV123.
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WWMTD
I'm looking for a replacement amp for a UFW 12.  It's currently got a blown AV123 amp in it.  Any suggestions.  Thanks in advance.
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sandbagger
Is that the UFW-12HR upgrade kit(new amp and driver) from av123?


WWMTD wrote:
I'm looking for a replacement amp for a UFW 12.  It's currently got a blown AV123 amp in it.  Any suggestions.  Thanks in advance.
Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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WWMTD
I couldn't tell you, it's a hand me down sub.  I forgot to mention that it's a 500 watt amp.
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gsr108
For sale 2 satin black MFW-15, V2's, in the Houston area.  Both are still working.  Have the replacement caps, but have not had the time to put them on.  Looking to sell both for $400 firm. 

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sandbagger
Did you send me an email a few days ago?   Been working on a bunch of things and havent had a chance to get caught up on a bunch of email.

does  the amp has blue ends on the adjustments, a balanced input along with speaker connections and a red 110-220 input voltage switch.  The driver aluminum?

Does the person you got it from still have the original amp?

I have been working on the modifications needed to make the old amp work with the new driver.  Just finished that up tonight.
WWMTD wrote:
I couldn't tell you, it's a hand me down sub.  I forgot to mention that it's a 500 watt amp.
Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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WWMTD
I realize that I'm in the wrong thread now...

Quote:
Did you send me an email a few days ago?   Been working on a bunch of things and havent had a chance to get caught up on a bunch of email.

does  the amp has blue ends on the adjustments, a balanced input along with speaker connections and a red 110-220 input voltage switch.  The driver aluminum?

Does the person you got it from still have the original amp?

I have been working on the modifications needed to make the old amp work with the new driver.  Just finished that up tonight.

That was me that emailed you.  You are describing the right amp.  He does not have the original amp.  I think this was his third attempt and he got fed up with it.  I tried to see what was wrong with it today, but it blew the fuse as soon as I plugged it in. I've got it hooked up to an old receiver amp now and it sounds decent, but I'd like to have the auto on feature.

I can email pics if you like.  Thanks for your help with this.

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stevesatch
Anyone with a MFW15 for sale in Southern Ca?  MFW with version 3 amp much preferred.
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mak99
3/20/11:  SOLD SOLD SOLD

STOCK MFW-15 DRIVER AVAILABLE

(due to Turbo kit replacement that arrived today)

Just pulled this working driver from my MFW last week, due to recent v2 amp failure about a month ago.  Driver worked just fine for about a year of ownership before the amp got the dreaded hum/cap failure.  Smoke-free, pet-free, children-free environment.





Click here for more pics over on Picasa.

Wiring ends have the quick-connect still attached as I did not have to cut them when removing the driver.

PM me with questions!  100% FB on Ebay, Audiogon, AVS, etc.
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mak99
I also have the working controller (gain/frequency/phase) that I removed during the Turbo upgrade.  I do know the phase control works since I could see the effects on-screen using a Velodyne SMS-1, when I first bought the MFW in Feb 2010.

I thought I read somewhere where a few people commented that their phase control didn't seem to work correctly with the v1 and/or v2 amps?  I know this controller did absolutely nothing with the v3 amps, IIRC...



PM with questions, etc...
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excaluber
I hope sandbagger and Mark don't mind me sharing this but in the spirit of this thread I thought it might help some others.

Thanks to mojave's help I was able to get in touch with Mike from the av123 forums who makes the custom MFW grills.

He was very very very responsive throughout the whole process and really a great pleasure to deal with.  Anyone who's looking for upgraded grills, whether its for a better magnet (was the biggest reason I was), or just an updated look I recommend speaking with mike (loudnclear from av123).

Here's a couple of the after photos just for reference.







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mojave
Those grills look great. Both of my cloth grills have cracked in the middle because I was careless with them when the grills were off. I have a cherry sub with the threaded inserts and one without, too. I also have mine on their sides.
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excaluber
ya one of my grills cracked (i'm not exactly sure how).  But the magnets were to weak, everytime someone brushed up against the grill it hit the ground.  These new grills are much much stronger.  They won't come off even if bumped into.


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Liaury
I spy a Super Nintendo.
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excaluber
Original Nintendo actually

And its actually a computer inside a old nintendo case.  Sorta a little HTPC but with a cooler case imo

I do use it to play nintendo games though, I have a usb adapter for the original controllers.

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mak99
Hey, ex - how does the 'table perform when the MFW's are rocking??

BTW, your subs look great with LnC's custom grilles.  I also have the cherry diamond gloss finish (looks like from your pix?), so I just PM'd you for Mike's info...
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excaluber
Ya know what, I can't say i've ever had the system cranked when using the turntable.  I got it very recently.  I'll definitely have to give it a shot though.

My subs are actually just the Satin Cherry.  Which I do like quite a bit, but your diamond cherry looks pretty awesome.  That finish wasn't available when I ordered mine otherwise I think I woulda went for it.

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nottaway
SOLD
AKA NicksHitachi
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stevesatch
I can confirm that the toroidal transformer version of the version 3 amp works great.  I'd buy the above amp if I had the cash : )
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boober
I have both versions of the v3 amp. 1 of em I'm not too crazy about though. I dunno if it's the earlier version or the later 1. For 1 thing, when the auto off function shuts the sub off, you'll hear this minor little pop. It is EXTREMELY ANNOYING. It will shut the sub down after what seems like I guess maybe 15 minutes of no signal......? Seems like 15 at least. I just leave the damn thing on 24/7.

Other than that annoyance, both versions are NICE!
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cmusngi
nottaway wrote:
I have two mfw-15 amps I am willing to sell. Hopefully have something on shipping tomorrow. If your interested, PM me.

one is a working V2 with the cap mod done. Checked to make sure it fixed humm and put back in box for spare. Also includes harness and controller module.

one v3.0 amp. This is the first versions of this amp that shipped, it has the toroidal transformer instead of the EI in later version. Works fine.

$100.00 ea+ shipping.

I had thought I would use these for mfw clones but now I'm thinking of putting more sealed to work which means different amps. Possible partial trades considered for behringer pro amp or other similar quality.......


PM Sent!
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stevesatch
I need a version 3 amp.  I just bought another MFW from an out of state seller and he assured my three times it has the version 3 amp.  It arrived today and of course it doesn't have a version 3 amp.
Thanks,
Steve

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