M&K V-125 powered subwoofer "Vintage" - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 9 Old 07-27-2019, 12:32 PM - Thread Starter
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M&K V-125 powered subwoofer "Vintage"

Can anyone please tell me where I can order internal amp parts online. Any help would be greatly appreciated!
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post #2 of 9 Old 07-27-2019, 03:23 PM
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You could try to contact "new" M&K, but the M&K that built that subwoofer is gone. If they don't have the parts, you could look on eBay and buy another to get parts out of.
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post #3 of 9 Old 07-28-2019, 02:09 PM - Thread Starter
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Thanx
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post #4 of 9 Old 07-28-2019, 02:32 PM - Thread Starter
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However, since posting... l've taken the liberty of opening up the back and found both capacitors leaking. It's an easy fix, just need to track down those capacitors. 50v 10000uf (M) UCC 53Q6L 85 SMH 85°c Nippon Chemi-con. The sub sat in their rec room for 20-plus years with very little use. I got it for free. After opening it and careful inspection... Circuit board, speaker and so forth, looks brand new... All but the capacitors. I'm a novelist, therefore, I have no idea what the capacitor numbers and letters represent. I have a soldering gun and solder. I've also watched numerous YouTube videos on this subject and will attempt to fix myself. Any help concerning this matter would be greatly appreciated Street
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post #5 of 9 Old 07-28-2019, 06:12 PM
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I have the same sub and the amp went on it. I bought a 200 watt plate amp on Alibaba and bolted it to the back and it actually worked better than the M&K amp. I was surprised at now much harder the sub hits now. I think I paid $69 for the amp.

I currently use the sub in my office attached to a computer. I bought an SVS-SB2000 sub to replace the M&K in the living room and the SVS is at another level.
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post #6 of 9 Old 07-28-2019, 07:13 PM
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Just search capacitors. Many companies sell them. Just make sure you buy ones that fit. Measure the distance between the terminals, the diameter and height of the cap. Also be careful when removing them. It takes a lot of heat. I use two soldering irons sometimes. My Carver Sub circuit board uses paper thin foil runs. Easy to destroy. Gotta be careful. Also when ordering new ones, buy ones with the same capacitance and look for ones that have higher voltage rating than the ones you are replacing, if available. And make sure they fit. You may have limited space between components.

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post #7 of 9 Old 07-30-2019, 09:11 AM
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Quote:
Originally Posted by mr645 View Post
I have the same sub and the amp went on it. I bought a 200 watt plate amp on Alibaba and bolted it to the back and it actually worked better than the M&K amp. I was surprised at now much harder the sub hits now. I think I paid $69 for the amp.

I currently use the sub in my office attached to a computer. I bought an SVS-SB2000 sub to replace the M&K in the living room and the SVS is at another level.
I have a few of the older M&K subs as you can see in my sig. Plus another V-75 I just scored off E-bay. I plan to replace the Klipsch with the new find here in the coming weeks.
I'm happy with the in-room response I get with them all - I'm pretty flat down to 8 hz then it falls right off. I'm curious about your comment stating the SVS you feel is at another level. Wanna share more on your thoughts/reasoning there.

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post #8 of 9 Old 07-30-2019, 09:35 AM
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Quote:
Originally Posted by Kevnmin View Post
I have a few of the older M&K subs as you can see in my sig. Plus another V-75 I just scored off E-bay. I plan to replace the Klipsch with the new find here in the coming weeks.
I'm happy with the in-room response I get with them all - I'm pretty flat down to 8 hz then it falls right off. I'm curious about your comment stating the SVS you feel is at another level. Wanna share more on your thoughts/reasoning there.
Comparing the MX-V125 to the SVS SB-2000, the SVS delivers significant greater output, much smoother from top to bottom. I am able to blend the SVS in for stereo music with a pair of Vandersteen 2Ce mains, something I never was able to sort with the M&K.
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post #9 of 9 Old 07-30-2019, 12:21 PM
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Originally Posted by mr645 View Post
Comparing the MX-V125 to the SVS SB-2000, the SVS delivers significant greater output, much smoother from top to bottom. I am able to blend the SVS in for stereo music with a pair of Vandersteen 2Ce mains, something I never was able to sort with the M&K.
Thanks for your thoughts on the differences. I'm primarily using for movies in small enclosed room so surprisingly using the sealed sub has worked out rather well. SVS is way nice though. In fact there is a local electronic store that will soon be carrying the SVS line. They're doing a big kickoff next Thursday evening. I'm planning on attending. Who knows, SVS could be in my future soon.
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