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Old 30th July 2005, 06:09 PM   #1
sumacSK is offline sumacSK  Slovakia
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Default Beyma 8BX

Hi,

I know it is not completly single driver, but still single point source... I'm considering buing this driver and use it on open baffle (or maybe closed) with subwoofer. I'm wondering if there is someone who has some experiences with this driver. Any crossover suggestions? (I have some crossover scheme from german magazine, but it is for beyma 8DX... ) I know that the best way would be active crossover (like behringer DCX) but I'm affrraid that my budget don't allouds me buying it... My room is about 25 m2, musical tastes: everything.
Sorry for my bad english

Thanks Martin
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Old 30th July 2005, 10:12 PM   #2
knorke is offline knorke  Germany
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I used years ago the predecessor of the 8bx (which had a paper cone) in a closed box (around 20l) with good results. It had strong bass output so you might not need necessarily a subwoofer in your room.
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Old 2nd August 2005, 03:33 PM   #3
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Haha, I knew the day would come when I would see a Slovak on here
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Old 2nd August 2005, 03:39 PM   #4
soongsc is offline soongsc  Taiwan
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Quote:
Originally posted by Jimmy154
Haha, I knew the day would come when I would see a Slovak on here
Prague is not in Solvakia. I'm confused.
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Old 2nd August 2005, 03:57 PM   #5
DarkOne is offline DarkOne  Slovakia
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Quote:
Originally posted by Jimmy154
Haha, I knew the day would come when I would see a Slovak on here

He is not alone here. Here are few Slovaks on forums for a long time.
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Old 2nd August 2005, 06:43 PM   #6
sumacSK is offline sumacSK  Slovakia
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Hi,

Yes there are more slovaks here... But back to speakers... So nobody with experiences with 8BX???????

Martin
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Old 2nd August 2005, 08:32 PM   #7
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Quote:
Originally posted by soongsc
Prague is not in Slovakia. I'm confused.
He has Slovakian flag. Lot of Slovaks go to Prague to work and/or study, like my parents when they were young studied there. They want me to go study there too, but I'm too smart already

I know nothing about speakers, sorry
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Old 5th August 2005, 07:04 AM   #8
belin is offline belin  Spain
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I have a pair of those that i intend to use like surround channels in HT. I haven't measured it yet, maybe this weekend. they are in a proto baffle with a size appropriate for my wife, so is not big in excess.

Sorry for my pathetic english.
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Old 5th August 2005, 06:40 PM   #9
sumacSK is offline sumacSK  Slovakia
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Hi belin,

Thanks for the response! So you are using that speakers on open baffle? What size? What kind of crossover do you use? And most important: how do they sound?

Thans a lot Martin
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Old 8th August 2005, 10:04 AM   #10
belin is offline belin  Spain
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Hi SamacSK,
I'm sorry, but i couldn't do the acoustic measures of the drivers. The power supply of my computer chose to broke this saturday, carrying with him the motherboard. Maybe you can use the T-S parameters that I measured time before. Here they are:
fs 47 Hz
Qes 0.590
Qms 6.8
Qts 0.543
Vas 36l
Re 5.5 Ohm
Le 0.05
Sd 216 cm2
(from the manufacturer)
Xmax 5mm
Pe 100w

The crossover will come next to the acoustic measurements, for now I use foobar for equalization porpouses. I have to say that I'm not really good optimizing the system by ear, and the sound I obtained is not great at all. I'll try to put photos later on the week.

Sorry again, maybe in a few days...
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