MK Kit DIY sub build - Home Theater Forum and Systems - HomeTheaterShack.com

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post #1 of 16 Old 03-05-11, 06:32 AM Thread Starter
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MK Kit DIY sub build

About 3 weeks ago I picked up an M&K parts kit from someone in the UK that imported them from Deep Surplus but didnt go ahead with the build. I picked the kit up for a good price, and so, even though I dont really have any use for this sub, I am building an M&K push pull sub. It uses the 250 watt plate amp and a couple of the super fast deep bass 12" drivers.

The plan is to build the cabinet at about 100 litres based on certain info I have collected. I am also considering a couple options for the configuration. I can either copy the traditional layout or another option I am considering is going dual opposed while keeping the push pull alignment I think these drivers need.

I'll get some images up soon enough, and try decide which way to go with the design.

Heres the model for the traditional layout design:

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post #2 of 16 Old 03-07-11, 11:54 AM
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Re: MK Kit DIY sub build

Cool, looking forward to see more.
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post #3 of 16 Old 03-13-11, 08:16 AM
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Re: MK Kit DIY sub build

That was one of my introductions to amazing subs back in the day. Good ol M&K...... I will be following this also.

"Music is the space between the notes"
[T]o talk well and eloquently is a very great art, but that an equally great one is to know the right moment to stop.
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post #4 of 16 Old 03-22-11, 10:15 AM Thread Starter
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Re: MK Kit DIY sub build

I went and bought the MDF today, so I will start the build tomorrow. I also have my new internet kit coming so hopefully I will be able to upload pictures again by this time tomorrow too.
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post #5 of 16 Old 03-23-11, 06:33 PM Thread Starter
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Re: MK Kit DIY sub build

I started this today and took some pictures. I am currently trying to upload them but as has been the problem lately, they just wont seem to upload. Soon as I can get that issue sorted, I will have some pictures up. Basically, the box is assembled, both driver holes cut out and I tested out some black spray paint on the front of the cab. Tomorrow I will make the cut out for the amp and knowing me wont be able to resist putting in the drivers and amp for a test run.
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post #6 of 16 Old 03-24-11, 01:44 AM
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Re: MK Kit DIY sub build

Awesome. I look forward to your impressions of the completed sub.

I have always loved there subs but never really new how they compared to others or if I just had a special place in my heart for them.

"Music is the space between the notes"
[T]o talk well and eloquently is a very great art, but that an equally great one is to know the right moment to stop.
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post #7 of 16 Old 03-26-11, 05:53 AM Thread Starter
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Re: MK Kit DIY sub build

I'm building this because the kit came up cheap, to cheap to really turn down. I didnt want a sub as I want to go IB, but this is a nice put me on. I used to have 2 MX 125 subs, and loved them to bits. The sound quality is glorious and exceptionally musical. They also go pretty deep considering the rather ordinary drivers and fairly low power (although they are very well built amps in terms of power, 250 RMS output with a 400 watt rated consumption ). They are fast and time very well, although they can come over as a bit wild when youve been spoiled with some of the subs I have over time.

I got this up and running last night, and I am very pleased. I built the cabinet too big (intentionally as I had no driver specs to model with) so had to displace some volume. The net result is a larger sub than required or wanted really, but thems the breaks as they say.

Having a decent sub back again has been great, its so apparent how much I missed decent bass. In my pretty conservatively sized room, it has more grunt than I need, with the gain on about 25% and the amp trimmed at about -10db. I'll try make some time to do an REW sweep at some point, and hopefully get the pics up ASAP.

As far as these mk subs go, they are excellent IMO for such compact subs. They obviously dont go super low in terms of comparing to LLTs etc, but you can still feel them plenty, and they have the ability to punch in a way LLTs really cant hope to match unless you either have lots of them or use them in smaller rooms.
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post #8 of 16 Old 03-26-11, 07:22 AM
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Re: MK Kit DIY sub build

Cant wait for the pics!!

I have always thought of building one but never quite understood what all was going on in the design.

I would probably just try and clone the 150thx sub.

"Music is the space between the notes"
[T]o talk well and eloquently is a very great art, but that an equally great one is to know the right moment to stop.
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post #9 of 16 Old 03-27-11, 06:59 AM Thread Starter
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Re: MK Kit DIY sub build

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post #10 of 16 Old 03-27-11, 08:01 AM
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Re: MK Kit DIY sub build

Nice!!! What thickness panels are those?

They look like 25mm but I cant tell from the pic.

"Music is the space between the notes"
[T]o talk well and eloquently is a very great art, but that an equally great one is to know the right moment to stop.
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