Alpair 6M Gen. 2 (metal) introduction - Page 5 - diyAudio
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Old 14th December 2010, 12:03 AM   #41
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Quote:
Originally Posted by Bill poster View Post
Thanks very much. This is the ideal scenario.
Was going to mount the 2 FR's in a cab with 2 chambers above a separate enclosure for the SDX7.
Inductors- no idea the value but will work it out.
Nice ideal for the drivers. Try to keep the edge of the frames of the Alps between 8mm to 10mm apart. Better if you can mount them closer together.

For XO of 200Hz, I'd start somewhere around the 5mH value. Quite large so you might need 2 inductors. If you XO at 400Hz, then you're looking at a value around 2.5mH. Much better and cheaper. 400Hz is nice, easy for the SDX7 and just outside the BT 400-4kHz band.

You might want to consider the Alp6P's if you're looking for a "brighter" detailed sound in the mids and highs. Might be a nice tonal combo with the SDX. Give them 2.6 litres each (sealed), this should get you going.

Alp6M smooth sounding, more relaxed. Could be a jazz lovers choice.

Very much a case of personal choice between the 6M and 6P in this instance.

Must dash, packing to do.

Cheers

Mark.
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Old 14th December 2010, 05:33 AM   #42
EUVL is offline EUVL  Europe
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Mark (F),

Have talked to Jan. Pls check your PM.


Patrick
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Old 15th December 2010, 01:16 AM   #43
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Originally Posted by EUVL View Post
Mark (F),

Have talked to Jan. Pls check your PM.
Patrick
Hi Patrick,
At HK airport now. Pls let Jan know I'll email when I get back from Auss - many thanks
Mark
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Old 22nd December 2010, 01:24 AM   #44
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Does the 6M have more of a 'bsc' hump in the 200-400hz range than the Gen1?
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Old 22nd December 2010, 04:55 PM   #45
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Yes, a bit.
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Old 23rd December 2010, 09:06 PM   #46
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Yes, a bit.
Thanks Scott. I've got the 6Ms on the way. I will FAST them with a Minidsp. I was going to just put them in as small an enclosure as I could since I'm crossing to ~250hz or so, but I keep reading how important it is to prevent any reflections from rear wave. Is there a recommended depth if I run them sealed?
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Old 23rd December 2010, 10:02 PM   #47
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If you want to provide any airload on the A6m the box will need to be <~6L. Some load will provide some reduction in excursion at low frequencies. Volumes above 6 litres start to approach infinite baffle response.

Sims have response & volumes for (top to bottom) Q=.707, 0.58. 0.5 and then 10, 20, 50 litres respectively

dave
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Old 29th December 2010, 03:20 PM   #48
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These are new arrival of Pensil 6 cabinets. They are made with oakwood.
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Old 29th December 2010, 03:34 PM   #49
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beautiful
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Old 22nd January 2011, 11:49 PM   #50
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If 6Ms are being crossed over at 250hz or higher, does this significantly increase the break-in time?
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