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Hondo5
sandbagger wrote:

http://www.seaton-sound-forum.com/post/mfw15-mk2-amplifier-700w-amplifier-upgradereplacement-7837102?trail=80#63

Doesnt get any easier than this as its drop in and much better, plus if you want to upgrade the driver down the road, get the driver and ship the amp back for the DSP update and you have 2X the sub for cheap


Sweeeeet!  Thank you.
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Boostted
My 550 show out of phase with Audyssey as well, but my big foot reads fine. 

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Hey guys, I asked Kevin this but I'm not sure how often he checks in here. 

Does anyone know if the 850's and the Bigfoot had any of the speakers wired out of phase? I'm getting some really weird Audyssey readings and even stranger REW results. Audyssey is showing the 850's and the bigfoot "out of phase". I've checked the connections 100 times and they are 100% wired to be "in phase" with all my speaker wiring but I'm not really sure about what's going on with the wiring inside the speakers.
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Inkynews
Hi guys,

Anyone know where to get a 4" mid for a rocket 850?
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sandbagger
Inkynews wrote:
Hi guys,

Anyone know where to get a 4" mid for a rocket 850?


Its this one just a different color, if it drives you nuts put the grill back on or paint it [smile] 

https://www.parts-express.com/hivi-m4n-4-aluminum---magnesium-midbass--297-434
Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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Inkynews
Thanks Sandbagger!

 Very happy to find out all is not lost/
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gpalz
Anyone know what the ohm rating is for the RS 850? I was looking through the guide, but it was absent of any specs. Some of the online audio reviews mentioned 6ohms, but would like to make sure. Thanks!
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sandbagger
6 would probably be a good guess.  They were not hard speakers to drive.

in the big picture it really doesnt matter almost any amp out there will drive a 4 to 8 ohm load no problem.

gpalz wrote:
Anyone know what the ohm rating is for the RS 850? I was looking through the guide, but it was absent of any specs. Some of the online audio reviews mentioned 6ohms, but would like to make sure. Thanks!
Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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Hondo5
You're in luck.  I have an old review of the Rocket 850s that includes a lot of the specifications.  Here they are:

• System: Modified Three-way, Vented

Enclosure
• Drivers: One 1" Vifa Ring Radiator, Tweeter, One 4" Aluminum Midrange, Four 5.25" Aluminum Woofers
• Crossover: 1.5 kHz, 6 kHz
• MFR: 36 Hz to 20 KHz (± 3 dB)
• Impedance: 6 Ohms Nominal
• Efficiency: 90.5dB @ 1 watt / 1 meter)
• Dimensions: 45.5" H x 11.8" W x 15.6" D
• Weight: 100 Pounds/Each - Shipping Weight
• MSRP: $1,999/Pair

I also have another review floating around somewhere.  I would post both reviews, but it seems there's a file size limit on this forum, and they're too big.  That hard copy also included a review of the MFW-15.  Hope this helps.
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gpalz
Thank You Sandbagger and Hondo5. Appreciate the response! Next step is trying to figure out a good sub to go with it.
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BBola
Hello all - I have two AV123 RS760's and one of the larger cones is starting to produce distortion.  Does anyone know of a good replacement?  I've seen a lot of discussion concerning the RS750 replacements but I believe the 760s might use a slightly different configuration.  Any help would be greatly appreciated!
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sandbagger
If I remember correctly the 760s had something different about them I think it was impedance was like 6ohm or something strange.

Unfortunantly I lost a hard drive a while back and lost most all of that kind of info..... 
Still need to send it in and see if the data can be recovered off the SSD  
Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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BBola
Thanks, sandbagger.  I'm trying to dig up any documentation on the 760s but thus far googling hasn't revealed much.  I found an old marketing sheet that had the following:

Design:   5 Driver, 3 Way, Rear Ported
Cabinet:  1" Fiberboard
Crossovers:  180 Hz, 1750 Hz
Tweeter:   Vifa Ring Radiator
Midrange: (2) 5.25" Long Throw Treated Aluminum
Woofer:  (2) 6.5" Long Throw Treated Aluminum
Freq. Response: 35Hz to 20KHz (+/- 3db)
Impedance:  8 ohms
Sensitivity:   87dB at 1 watt/1 meter

Going to be pretty bummed if I can't find a replacement.  1 bad cone will render an entire set (2x760, 2x250, 1xRSC200) useless for home theater :/
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Sevenfeet
I suffered damage to a few of my RS750s 4" midrange drivers (child induced) and I discovered that Parts Express sold plug and play versions of these, they were just gold in color and not silver.  I ended up buying some extras just in case.  I have no idea if they have the ones for the RS760.
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sandbagger
Yes the 750 and bigfoot can use the off the shelf HiVi  MxN series of drivers.
You could always give it a try, probably $25 for a driver to try
no reason to get rid of the other speakers as the center is a great center and the surrounds are very good too.
I will see if I can do some digging 
Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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BBola
Lost track of this thread and figured I'd give it one more try.  Based on the stats above I was thinking replacing the busted cone with the following:

https://www.parts-express.com/fountek-fw168-6-1-2-aluminum-midwoofer-speaker--296-729

Any reason why that wouldn't work?  Not really concerned with the change in looks.

Another quick questions since everyone here seems so knowledgeable.  One of my speaker grills has a couple of posts that finally sheared off after 10 years of use.  Any recommendations on how to fix that? 
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sandbagger
BBola wrote:
Lost track of this thread and figured I'd give it one more try.  Based on the stats above I was thinking replacing the busted cone with the following:

https://www.parts-express.com/fountek-fw168-6-1-2-aluminum-midwoofer-speaker--296-729

Any reason why that wouldn't work?  Not really concerned with the change in looks.

Another quick questions since everyone here seems so knowledgeable.  One of my speaker grills has a couple of posts that finally sheared off after 10 years of use.  Any recommendations on how to fix that? 


again that speaker as I remember was a 6ohm not an 8 ohm and used either 6 or 12ohm drivers, but I lost all that info in a hard drive crash so I dont have it anymore.   if you dont put something close back in it will change the crossover.   you should really pull one of the good drivers out, un solder it and then measure it.   if its 6ohm you wont change the crossover a ton but if its 12ohm, I have no idea what its going to sound like.   

if you just want to put a driver in the hole instead of using that one the HiVi MxN series from PE is what they copied with a different color cone.  
Kevin
Motor City Custom Audio
http://motorcitycustomaudio.com/
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