Beyma 8BX

sumacSK · 30th July 2005, 06:09 PM

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

knorke · 30th July 2005, 10:12 PM

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.

Jimmy154 · 2nd August 2005, 03:33 PM

Haha, I knew the day would come when I would see a Slovak on here

soongsc · 2nd August 2005, 03:39 PM

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.

DarkOne · 2nd August 2005, 03:57 PM

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.

sumacSK · 2nd August 2005, 06:43 PM

Hi,

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

Martin

Jimmy154 · 2nd August 2005, 08:32 PM

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

belin · 5th August 2005, 07:04 AM

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.

sumacSK · 5th August 2005, 06:40 PM

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

belin · 8th August 2005, 10:04 AM

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...

30th July 2005, 06:09 PM	#1
sumacSK diyAudio Member Join Date: Jun 2004 Location: Prague	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

2nd August 2005, 03:33 PM	#3
Jimmy154 diyAudio Member Join Date: Jun 2002 Location: Los Angeles	Haha, I knew the day would come when I would see a Slovak on here __________________ We do not allow political statements or conjecture to be made on these forums.---the diyAudio moderation team

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30th July 2005, 10:12 PM	#2
knorke diyAudio Member Join Date: Dec 2004 Location: Eichstetten	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.

2nd August 2005, 06:43 PM	#6
sumacSK diyAudio Member Join Date: Jun 2004 Location: Prague	Hi, Yes there are more slovaks here... But back to speakers... So nobody with experiences with 8BX??????? Martin

5th August 2005, 07:04 AM	#8
belin diyAudio Member Join Date: Aug 2004 Location: Huelva	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.

5th August 2005, 06:40 PM	#9
sumacSK diyAudio Member Join Date: Jun 2004 Location: Prague	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

8th August 2005, 10:04 AM	#10
belin diyAudio Member Join Date: Aug 2004 Location: Huelva	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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