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Old 7th May 2012, 06:48 AM   #1
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Default NO Baffle 3 way speaker

HI all,

As for my look around for my first DIY project and me living in Apt i had to look for something that requires minimal wood work so this came across

My open baffle dipole with Beyma TPL-150

this is my inspiration... so here are my three drivers i will use...

Sub

Mid or
Tweeter
My reason to select all these three were totally on basis of...

If not best in good performance category.
And if tomorrow i am not able to get this working i can use this for other project e.g. Goldwood Sub can be used for h Frame MJK subwoofer and alpair can be used for Frugal horn .... and Ribbon can be mounted on top.. or can just do open baffle on alpair or fostex with ribbon below it ..

being total newbie i will not be going on route of active crossover so will stay on passive crossover...


I just want to know if this is a good idea to move forward....and what is the crossover frequencies i should be looking into these speakers ...



thanks for all the help...
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Old 7th May 2012, 06:57 AM   #2
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another idea to take care of vibration is to remove the subwoofer like this....

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Old 7th May 2012, 10:47 AM   #3
Rudolf is offline Rudolf  Germany
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Originally Posted by thisisvv View Post
being total newbie i will not be going on route of active crossover so will stay on passive crossover...

I just want to know if this is a good idea to move forward....and what is the crossover frequencies i should be looking into these speakers ...
Your choice of drivers is feasible. But you want to put the Goldwood into a H frame and you probably want a larger driver for the midrange than the Alpair 7. Doing it passive will make things really difficult. And you will be lost without the capability to measure frequency response.
This is my passive crossover for a similar baffleless three way system. And no - this is not stereo:
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Old 7th May 2012, 03:21 PM   #4
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Default OB

Scott,

I've been running this route for quite sometime, and this supposes to be one of the most neutral sounding speakers I've heard to date. I started out with H frame then moved to just simply OB with different drivers. Below shows the route that I've been trying up to the moment. I did try the midrange with Alpair 12 which is 8", but the one with the 12" fullrange is the latest. Sound is full, rich and more neutral to my ears.

Albert
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Old 7th May 2012, 03:23 PM   #5
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Scott,

Can you find the DTQWT at the back of the second picture ??

Albert
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Old 7th May 2012, 03:40 PM   #6
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Scott,

Can you find the DTQWT at the back of the second picture ??

Albert

Yup the one you mean which is inserted in the pipe ....

how did you know what XO to use...or did you used digital crossover...
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Old 7th May 2012, 03:41 PM   #7
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Originally Posted by Rudolf View Post
Your choice of drivers is feasible. But you want to put the Goldwood into a H frame and you probably want a larger driver for the midrange than the Alpair 7. Doing it passive will make things really difficult. And you will be lost without the capability to measure frequency response.
This is my passive crossover for a similar baffleless three way system. And no - this is not stereo:

So is there any budget Digital XO i can use rather then making a Active XO myself
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Old 7th May 2012, 03:46 PM   #8
DrDyna is offline DrDyna  United States
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So is there any budget Digital XO i can use rather then making a Active XO myself
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Old 7th May 2012, 04:28 PM   #9
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Now i need to learn about digital XO....can some one point me ...

i hear people use PC as well for XO....
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Old 7th May 2012, 04:29 PM   #10
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Behringer's are budget conscious.
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