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Old 29th January 2010, 06:27 AM   #1
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Default Alpair-10 with Alpair 5, German combo

Hi Guys,
I just been sent some information about a new build project in Hobby Hi-Fi magazine published in Germany. I gather the article includes a full plan showing how to make this cabinet. Also, there's specs for the network and a full test set of results on this system.

I've made this thread in Full Range because its a DIY build project rather than stuff related to the newer drivers I'm currently doing. So I'll flag this project and leave it for the interest of the rest of the membership.

Maybe the forum's EU members can enlighten?

Here's the link the magazine site: HOBBY HiFi

Cheers

Mark.

( Hobby Hi Fi is acknowledged)
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Last edited by markaudio; 29th January 2010 at 06:31 AM. Reason: Typo mending
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Old 29th January 2010, 06:38 AM   #2
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Sure be nice if they had an English eEdition.... frm the copies i've seen at Bob's they sure seem to go overboard with the filters.

Any idea where they are putting the XO?

dave
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Old 29th January 2010, 02:28 PM   #3
Henkjan is offline Henkjan  Netherlands
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the X-over is 2nd order at 300Hz. in addition a wealth of notches, impedance corection and the like to make the filter a nice beast

Berndt Timmermans is known for his exuberant filters, more than once he made a design where the filter outpriced the drivers.. but this filter is moderate (by his standards).
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Old 29th January 2010, 06:34 PM   #4
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Quote:
Originally Posted by Henkjan View Post
the X-over is 2nd order at 300Hz.
On 1st pass you'd think a bit higher could simplify things by tieing in BSC (based on a guess of the box width)

Quote:
Berndt Timmermans is known for his exuberant filters
I have seen some that have more parts than some of my amplifiers.

dave
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Old 15th February 2010, 06:43 AM   #5
_henry_ is offline _henry_  Australia
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looks very nice!

chipboard?

I hope someone on the europe can enlightened us.

regards
Henry
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Old 15th February 2010, 06:47 AM   #6
_henry_ is offline _henry_  Australia
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Hi Mark,

Would you mind give more details?

Thanks
Henry
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Old 15th February 2010, 07:50 PM   #7
Henkjan is offline Henkjan  Netherlands
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the cabinets are made from 'bendable' plywood.

what details are you looking for?
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Old 16th February 2010, 04:16 AM   #8
_henry_ is offline _henry_  Australia
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for start is the dimension, and also the crossover.

I have a pair 10bass and alpair 5 still waiting to play

Do they come in english? i mean Hobby hifi magazine? i would be interested to subscribe.

Cheers
Henry
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Old 16th February 2010, 04:42 AM   #9
EUVL is offline EUVL  Europe
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A few links of previous discussions on the same subject, plus how else to make curvy boxes without flexi-ply :

Alpair 6 Bass Reflex Bookshelf
Impression of the Linhof AP5+10 combo at Mark Audio in HK.

http://www.diyaudio.com/forums/attac...6-br-final.jpg
How else to make curvy enclosures.

Alpair 10 Bass + Alpair 5 - Woodwill Japan
Crossover discussion for AP5+10

It is not worth translating the article in English, IMHO. (I do have a copy.)
We can do better ourselves.
(I don't like all these complicated notch filters.)

Or have a look at the 2 Japanese solutions (including one from Linhof that we listened to in HK).
I am sure Mark will give you more details if you contact him.


Patrick

Last edited by EUVL; 16th February 2010 at 04:50 AM.
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Old 16th February 2010, 05:07 AM   #10
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Quote:
Originally Posted by _henry_ View Post
for start is the dimension
206x380x319mm (wxhxd) Plans are of a rectangular monkey coffin, unlike the pictures.

XO has 22 parts!!

dave
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