MEGABLASTER2010 (2x100w TK2050) - Page 5

Drakmin · 5th February 2010, 01:45 PM

And bare paper cone is bad for outdoors I quess. Well I have collected enough information and made the best compromise for me and my use. You'll see soon what suited my needs best. I reveal a bit, ordered just 5,6Ah 18V LiPo battery. Acryl laser cutting firm just told me they have both glossy and matte black acryl, I might go with matte since it's not that much of a finger print magnet.

(2,5 years ago with same money I got 3,3kg 12V 7Ah lead acid for my first blaster) Some progress here

kristleifur · 9th February 2010, 11:15 AM

Interesting project, beautiful design, great thread! Keep 'em coming.

Drakmin · 04:49 PM

Amplifier arrived, it even works! Atm. listening to only one channel until I get resistors to sum the input.

Drakmin · 10th February 2010, 05:56 PM

I could get the metal diaphram p-audio 407N for 3 dollars. Is it worth 3 dollars?

I think I could pair it with p audio wn-8s bass driver.

I already have a good sounding prototype running but it's too heavy. That 8" paudio on the url weight only 1,3kg and looks interesting to me. I'm willing to pay to lose 2kg (my bass driver in prototype weight a bit over 3kg)

http://www.loudspeakersplus.com/images/WN-8S.pdf

w w w . p a u d i o s y s t e m . c o m

Saturnus · 10th February 2010, 06:06 PM

Would be an excellent driver for it but it'd require a different filter than the one already calculated here.

kristleifur · 10th February 2010, 06:09 PM

Quote:

Originally Posted by Drakmin

Amplifier arrived, it even works! Atm. listening to only one channel until I get resistors to sum the input.

Cool little computer in the pic

But btw - maybe I'm wrong but I don't think you need any resistors to sum the input - just wire them together. But I'm a bit scared to say this with any certainty as you probably have a reason for the resistors ... ?

Drakmin · 06:21 PM

I think i'll just order right now P Audio WN-8S and previously recommended PHT407 (without N) 30e more cost but whatever

I just wan't to cut 2kg away from weight.

He, that "computer" is the coolest phone on earth atm. Motorola Droid!

Oh damn, postage cost from loudspeakerplus to finland is 150 dollars lol. Cant' find that bass driver on any other shop

Drakmin · 10th February 2010, 08:08 PM

Does anyone know where to get P.Audio WN-8S without 150$ postage to Finland? I'll be thankful for any information.

Drakmin · 11th February 2010, 11:08 AM

Got emails from multiple shops, no-one selling WN-8S anymore.

Here's another attempt: tried to balance the weight cost and sensitivity. Is it possible to make these work together. They both are sold on thomann so I can actually get those and not only dream about

Eminence - The Art and Science of Sound

http://www.eminence-speaker.com/pdf/apt80.pdf

Cost is 70 euros total. Tweeter is not the lightest (700gr) but pretty small in size and price. I need a tweeter which can be hidden behind about 80mm in radius circle speaker fabric. Total weight is 2,6kg. The bass and tweeter I have in prototype weight 3,5-4kg total and have less sensitivity (89db/w)

Drakmin · 15th February 2010, 05:45 PM

Saturnus: (or any other pro)

http://www.eminence-speaker.com/pdf/alpha-8a.pdf

http://wavecor.com/html/tw030wa02.html

I found really light tweeter (130gr) which matches the Eminence bass drivers sensitivity 94db/w. Could I put 6db/oct roll off for bass starting at 1000hz to tame the small spike at 2000-4000hz and 12db/oct @ 2000hz for the tweeter. For my eyes it looks okay starting point. Does it matter that bass is 8ohms and tweeter 4ohms if I just remember it when calculating the xo parts. Tweeter is 30 euros and bass 40 euros and both are sold in shops where I can get those. These drivers match all my needs if they only work together

I'll be really grateful for any opinions. I'd like to start building now!

9th February 2010, 04:46 PM	#43
Drakmin diyAudio Member Join Date: Oct 2006	Amplifier arrived, it even works! Atm. listening to only one channel until I get resistors to sum the input. Last edited by Drakmin; 9th February 2010 at 04:49 PM.

10th February 2010, 06:17 PM	#47
Drakmin diyAudio Member Join Date: Oct 2006	I think i'll just order right now P Audio WN-8S and previously recommended PHT407 (without N) 30e more cost but whatever I just wan't to cut 2kg away from weight. He, that "computer" is the coolest phone on earth atm. Motorola Droid! Oh damn, postage cost from loudspeakerplus to finland is 150 dollars lol. Cant' find that bass driver on any other shop Last edited by Drakmin; 10th February 2010 at 06:21 PM.

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5th February 2010, 01:45 PM	#41
Drakmin diyAudio Member Join Date: Oct 2006	And bare paper cone is bad for outdoors I quess. Well I have collected enough information and made the best compromise for me and my use. You'll see soon what suited my needs best. I reveal a bit, ordered just 5,6Ah 18V LiPo battery. Acryl laser cutting firm just told me they have both glossy and matte black acryl, I might go with matte since it's not that much of a finger print magnet. (2,5 years ago with same money I got 3,3kg 12V 7Ah lead acid for my first blaster) Some progress here

9th February 2010, 11:15 AM	#42
kristleifur diyAudio Member Join Date: Apr 2006 Location: Reykjavík	Interesting project, beautiful design, great thread! Keep 'em coming.

10th February 2010, 05:56 PM	#44
Drakmin diyAudio Member Join Date: Oct 2006	I could get the metal diaphram p-audio 407N for 3 dollars. Is it worth 3 dollars? I think I could pair it with p audio wn-8s bass driver. I already have a good sounding prototype running but it's too heavy. That 8" paudio on the url weight only 1,3kg and looks interesting to me. I'm willing to pay to lose 2kg (my bass driver in prototype weight a bit over 3kg) http://www.loudspeakersplus.com/images/WN-8S.pdf w w w . p a u d i o s y s t e m . c o m

10th February 2010, 06:06 PM	#45
Saturnus diyAudio Member Join Date: Jun 2005 Location: Copenhagen, Denmark	Would be an excellent driver for it but it'd require a different filter than the one already calculated here.

10th February 2010, 08:08 PM	#48
Drakmin diyAudio Member Join Date: Oct 2006	Does anyone know where to get P.Audio WN-8S without 150$ postage to Finland? I'll be thankful for any information.

11th February 2010, 11:08 AM	#49
Drakmin diyAudio Member Join Date: Oct 2006	Got emails from multiple shops, no-one selling WN-8S anymore. Here's another attempt: tried to balance the weight cost and sensitivity. Is it possible to make these work together. They both are sold on thomann so I can actually get those and not only dream about Eminence - The Art and Science of Sound http://www.eminence-speaker.com/pdf/apt80.pdf Cost is 70 euros total. Tweeter is not the lightest (700gr) but pretty small in size and price. I need a tweeter which can be hidden behind about 80mm in radius circle speaker fabric. Total weight is 2,6kg. The bass and tweeter I have in prototype weight 3,5-4kg total and have less sensitivity (89db/w)

15th February 2010, 05:45 PM	#50
Drakmin diyAudio Member Join Date: Oct 2006	Saturnus: (or any other pro) http://www.eminence-speaker.com/pdf/alpha-8a.pdf http://wavecor.com/html/tw030wa02.html I found really light tweeter (130gr) which matches the Eminence bass drivers sensitivity 94db/w. Could I put 6db/oct roll off for bass starting at 1000hz to tame the small spike at 2000-4000hz and 12db/oct @ 2000hz for the tweeter. For my eyes it looks okay starting point. Does it matter that bass is 8ohms and tweeter 4ohms if I just remember it when calculating the xo parts. Tweeter is 30 euros and bass 40 euros and both are sold in shops where I can get those. These drivers match all my needs if they only work together I'll be really grateful for any opinions. I'd like to start building now!

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