New Box Build for Magnat XTC-1200

19387 Views 34 Replies 4 Participants Last post by Mike P., Jun 8, 2009

davidburn

Discussion Starter · Jan 31, 2009

The spec's for this Sub are now unavailabe. Was wondering if there is anyway of modeling a new box without correrct Driver parameters?. I currently have this driver in a 60 lt 29hz tuned and was wanting to build a different box. Mike P kindly found this link for me for a car application.

magnat.sk/dokumentacia/XTC1200br.pdf

I found a sub that was very similar to one I have on Magnat's website.

Qts 0.31
Qes 0.33
Qms 8.00
Vas 81 L
Fs 30 Hz
Xmas 16mm
SPL 90 db
Pe 300 w

Not sure if any of this is relivant as its a different driver.

Any help would be great, Thanks in advance.

21 - 35 of 35 Posts

davidburn

Discussion Starter · #21 · Feb 12, 2009

Have started the new box. I made it out of 18mm chip board which is not the smartest think to do but its cheap and strong. Its had a coat of paint, but still needs alittle fill in some spot's. Im trying to get a couple of prices to have it 2 packed gloss black by a panel beater or a kitchen cabinet maker, hopefully less less than $100 should cover it.
Thanks again to Mike P for all your help and cant wait to see how it sounds.

I've tried uploading images but it say's its to large. How do I reduce the size??.

Mike P.

· #22 · Feb 12, 2009

I use Image Resizer from Microsoft.

http://www.microsoft.com/windowsxp/Downloads/powertoys/Xppowertoys.mspx

davidburn

Discussion Starter · #23 · Feb 12, 2009

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More to come.

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davidburn

Discussion Starter · #24 · Feb 12, 2009

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Here is some more pic's, I will post the finished Sub.

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davidburn

Discussion Starter · #25 · Feb 22, 2009 (Edited)

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The wait for a panel beater would have been too long, so I rolled some gloss black enamel, its still need another coat of black and 1 of clear but look's pretty good. I will be making a front cover for it soon.
As for the sound its very good, Hit's hard and blend's in well with my other speakers.

Thank's again Mike P for all your help.:T

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Mike P.

· #26 · Feb 23, 2009

Glad to hear it worked out for you! :T

biscuitg303

· #27 · May 14, 2009

Nice project! I'm curious if anyone has ever had any problems with mounting ports this close to the edges of their enclosure? I know that it sometimes is a must, but have always read to allow at least a port diameter clearance from the inside port entrance to ANY walls....Again, nice project!

davidburn

Discussion Starter · #28 · May 15, 2009

It hasn't been a problem that I can tell, if I had put the ports any where else they would have hit the speaker or amp. I didn't want to have bended port's. I've always wanted just a little more bass, but now I just push the Plus button on the sub and its always got enough. It hits hard and is really good for both music and movies so im very happy with it. Im going to hopefully start a new build soon, because I have a Double Garage next to my lounge so I think i will try a LLT.

davidburn

Discussion Starter · #29 · Jun 3, 2009

biscuitg303 said:
Nice project! I'm curious if anyone has ever had any problems with mounting ports this close to the edges of their enclosure? I know that it sometimes is a must, but have always read to allow at least a port diameter clearance from the inside port entrance to ANY walls....Again, nice project!

This is interesting, can anyone answer what the effects are.

I have bought 2 elbows to put into the box, which will get the ports off the side of the box, not sure if it will make much of a difference.:huh:

davidburn

Discussion Starter · #30 · Jun 3, 2009

Its been raining in NSW, so I Finally got around to making the front cover and putting the last coat of paint on.

Here are some pic's.

Can I used the mic in my DV7 Laptop if I calibrate it, to post some rew results?

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Mike P.

· #31 · Jun 3, 2009

I've read that a port close to a cabinet wall will have the effect of increasing the air turbulence and lowering the tuning a bit.

Not sure about the mic in your DV7 Laptop, you could post the question in the REW forum.

davidburn

Discussion Starter · #32 · Jun 3, 2009

Thanks Mike

Ricci

· #33 · Jun 4, 2009

Mike P. said:
I've read that a port close to a cabinet wall will have the effect of increasing the air turbulence and lowering the tuning a bit..

Yes. I haven't seen definitive research on it, but many well respected subwoofer designers have used this trick to get a lower tune in a smaller box.

davidburn

Discussion Starter · #34 · Jun 8, 2009

After the last couple of posts I thought I would put in the angled port's thus giving me 1 port diameter away from any wall. Not sure if it has made a difference or not?

After pulling the sub apart and putting in the new angles I worked out I was a little off from the design, The box is 102.2 lt working volume and tuning is 22 hz, and it sound's great.

Just for an experiment I cut down the original ports and tuned the box to 26 hz. It was still Ok and could drive it much harder, but with movies it rattled my house and doors really bad, not sure why??

Now back to the 22hz tune it dosent rattle the house as bad, Its just good hard hitting bass.

Just for kicks I put on WOTW and the sub play's full power with no troubles.:yay:

Thanks again Mike:hail:

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Mike P.

· #35 · Jun 8, 2009

Just for an experiment I cut down the original ports and tuned the box to 26 hz. It was still Ok and could drive it much harder, but with movies it rattled my house and doors really bad, not sure why??

There was a higher SPL level from the higher tuning at the expense of low end extention.

Just for kicks I put on WOTW and the sub play's full power with no troubles.

Good to hear! :T

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