TW034XO + AP210ZO Suggestions?

[cyteen]

I had forgotten the material thickness, and 54L does bring things back in line. Thanks for taking the time to set things straight again.

I've played with the TW010F1 and have to say that although they fill in up to 20Khz they don't have the same dramatic effect I noticed when crossing a peizo rated beyond 30Khz. The peizos effects seem to reach into the mid bass and improve imaging.

 

[Mark25]

..........
One thing; most of the equivalent tweeters (like the one in the AN - E) have a smaller recessed dome. The TW034X0 has a huge surface mounted dome, time alignment is worse than normal, i've been thinking of how to make my cabinet counteract some of this physical offset..............

although the dome looks big, it only protrudes 5mm in front of a SS 2905/9300 dome.

 

[D1GGY]

OK, I get 16.58x10.55x25.64" for 54l golden ratio.

Did you remember the material thickness? Internal width doesn't matter for these purposes. That should be wide enough, but you could always add two side cheeks to build it out to ~18", or build a 70l box. Sorry for mixing english system with metric units....

GB

Sorry for resurecting such an old thread, But I am going to build these over the rest of the holiday for the kids room to save my speakers as i have the drivers lying around.

I have a couple of questions about these cabinets

Where should i place the drivers in the front panel, as close together in the middle?

and

what sort of deadening should i put on the walls?

and

what should i do for a crossover i am not sure this got resolved?

TIA

mark

 

[Salas]

Use ''Edge'' to see for best predicted placement on baffle. Link

Felt and wool.

Series, simple. ARSXO

 

[D1GGY]

Thankyou for your response, much appreciated.

I shall have a play and see what i get....

M

 

[D1GGY]

Right, I have finished building the Wrap for this project out of a mix of Ply and MDF. 18mm for sides and back. Front baffle is 18mm Ply.

The walls have been lined with sound deadening bitumus type product and 12mm foam. Which leaves the driver placement on the front baffle.....

I have had a play with the software above and to be honest I do not know what I am doing. Can someone assist by giving me some dimensions or further ideas on how to read what the edge is telling me so that i can get on with mounting the drivers.

The front Baffle is 450mm X 680MM

They are then to be finished in Rimu Veneer...

Cheers,

Mark

 

[D1GGY]

Just re-read the thread,

Does assymetrically mean the tweeter is offset relative to the centre line of the woofer and thereofore centre line of the cabinet?

m

 

[Salas]

For the tweeter yes, as you describe. But Thorsten talked about both ''drivers'' which means you better avoid for the woofer to be smack half way baffle height at least, too.

 

[D1GGY]

Thanks, much appreciated

m

 

[sreten]

Hi,

Basically for large baffles and a vertically aligned 2-way :

Mount the drivers centres near 0.6 of the baffle width.

Mount the drivers close together.

Mount the tweeter distance from the top such that its
centre is near 0.6 of the distance to the nearest side.

This is assuming you want to minimise diffraction ripple,
it some cicumstances it is possible to exploit the effect.

/sreten.

 

[D1GGY]

Thanks,

just what i needed....specifics.

mark

 

[D1GGY]

Ok I get...

420 x 0.6 = 252

so

centre line for the speakers is 252mm from one edge. Mirrored for left and right cabinets.

the tweeter is mounted with reference to the top and 0.6 of the nearest edge measure

420 - 252 = 168

0.6 x 168 = 100.8

so the tweeter centre point is 100.8mm down, 252 mm in from the edge. Mount the woofer close to the tweeter on the 252mm "centreline"

Have i understood correctly?

m

 

[D1GGY]

like this?

m

 

[D1GGY]

Built...... Sound quite good actually, now to do the finishing.

Pictures to follow.
m

 

[Salas]

like this?

m

Its OK. waiting for pics.

 

[D1GGY]

Been a while as i have been enjoying them. For such a cheap driver the sound is most enjoyable....

 

[D1GGY]

and another...

 

[D1GGY]

Thanks to everyone who has assisted in the design,

Much appreciated. i am very happy with them.

Now what next?

Mark.

 

[Salas]

Nice! Can you post the final crossover too? Someone may have such units and maybe want to build. Also some other details, like the depth of the box, materials used, more about its sound, rest of the system etc.

I don't know about the system it plays with now, but next would be a nice valve or Mosfet DIY amp to play them with... Maybe an SY Impasse driving a Pass F4.