Question from Tomas.

toen · 18th November 2007, 06:57 PM

Hi

I just finilazed bass loudspeakers, armed with 1 piec 10"
fs 20Hz, qts 0,36,vas 166, eclosed in 60 liters sealed box.

I like a dry exakt bass with good transients. I work out wery good. Hovever i think the bass "pressure" in lower frekvenzes are to week, I like to increase the power in some way.

1. I f i put an additional same type of element under the previuos, but with the front directed in to the enclosure, is it possible to gain any more power due to som theoretical 100% enclosure increase? Isaobaric or something?

2.If i put aditional same type of element under the privious, in same way, but with front to the listener, i will get twice the membranarea, but each element will only have 30 liters/piec.
Is it possible to compensate this with some kind of parametric Eq or something?

Mabey some of you experts out there have som suggestions?

BR
Tomas

PeteMcK · 18th November 2007, 08:30 PM

You can equalise, google 'Linkwitz transform',
but it's probably easiest to port your box (group delay should be inaudible at around 20Hz).

Which speaker driver are you using?

toen · 19th November 2007, 11:00 AM

Thank´s for you answer, my driver is SEAS H1209 L26RFX/P
BR
Tomas

18th November 2007, 06:57 PM	#1
toen diyAudio Member Join Date: Oct 2007	Question from Tomas. Hi I just finilazed bass loudspeakers, armed with 1 piec 10" fs 20Hz, qts 0,36,vas 166, eclosed in 60 liters sealed box. I like a dry exakt bass with good transients. I work out wery good. Hovever i think the bass "pressure" in lower frekvenzes are to week, I like to increase the power in some way. 1. I f i put an additional same type of element under the previuos, but with the front directed in to the enclosure, is it possible to gain any more power due to som theoretical 100% enclosure increase? Isaobaric or something? 2.If i put aditional same type of element under the privious, in same way, but with front to the listener, i will get twice the membranarea, but each element will only have 30 liters/piec. Is it possible to compensate this with some kind of parametric Eq or something? Mabey some of you experts out there have som suggestions? BR Tomas

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18th November 2007, 08:30 PM	#2
PeteMcK diyAudio Member Join Date: Feb 2002 Location: Sydney	You can equalise, google 'Linkwitz transform', but it's probably easiest to port your box (group delay should be inaudible at around 20Hz). Which speaker driver are you using?

19th November 2007, 11:00 AM	#3
toen diyAudio Member Join Date: Oct 2007	Thank´s for you answer, my driver is SEAS H1209 L26RFX/P BR Tomas

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