Simulator program needed Pls. heeeelllllllllllppppp!!!!

[gaborbela]

Hello

I have a need for a simulator program so I can chose the right woofer to my
75Liter BR enclosure.
Until now I used one from these site but for some reason no longer available.
Steve Ekblad's Free Audio Software and On-Line Enclosure Design
I just finished my enclosure I have the
mid woofer Gorlich
tweeter Morel --both 91 and 92DB.
I want to chose a 10" woofer close or same sensitivity and F3 around 30Hz.
I attached a picture just to be clear what I'm looking for.
Someone posted these program on the forum, for a couple days I tested several woofer. Unfortunately I didn't print them out....... I taught I can use it when ever I will need.
Now when I finished the enclosure I can't use it.
Please someone help me to find a not to complicated calculator where I can type the woofer Was, Fs, Qts, and the enclosure size (Liter).
Also after I get the F3 I have to calculate the vent tube length.
Many thanks for help, advise!!!

Greetings Gabor

[sreten]

Hi,

You can't build a 3-way with all drivers the same sensitivity. its the most common mistake.

You can build a 3-way with the same senstivity with two bass drivers, and 4 ohm bass.

http://www.deadwaxcafe.com/vzone/david/david.htm

https://sites.google.com/site/undefinition/tarkus

rgds, sreten.

undefinition (see if nothing else, the excellent FAQs)
The Speaker Building Bible - Techtalk Speaker Building, Audio, Video, and Electronics Customer Discussion Forum From Parts-Express.com
Zaph|Audio
FRD Consortium tools guide
http://web.archive.org/web/200909021...esigningXO.htm
RJB Audio Projects
http://web.archive.org/web/200909022...ve99/Spkrbldg/
Speaker Design Works
HTGuide Forum - A Guide to HTguide.com Completed Speaker Designs.
DIY Loudspeaker Projects Troels Gravesen
Humble Homemade Hifi
Quarter Wavelength Loudspeaker Design
The Frugal-Horns Site -- High Performance, Low Cost DIY Horn Designs
Linkwitz Lab - Loudspeaker Design
Music and Design

Great free SPICE Emulator : SPICE-Based Analog Simulation Program - TINA-TI - TI Tool Folder

[gaborbela]

Hello
Thank you
To have all same sensitivity that would be hard to get. You right.
I want something close, for woofer 88.5db is good enough. I can use L pad to cut back from the tweeter and mid sensitivity.
I just need a simple software to get the most ideal woofer.
I think about the Alcone AC10 but there are several Scan Speak I would like to run a simulation before I buy something.
Also I need to know the tuning frec. F3..
Thank you
Greetings gabor

[Tytte71]

Originally Posted by gaborbela

Hello
Thank you
To have all same sensitivity that would be hard to get. You right.
I want something close, for woofer 88.5db is good enough. I can use L pad to cut back from the tweeter and mid sensitivity.
I just need a simple software to get the most ideal woofer.
I think about the Alcone AC10 but there are several Scan Speak I would like to run a simulation before I buy something.
Also I need to know the tuning frec. F3..
Thank you
Greetings gabor

Point is that it does not turn down to what is good enough or not. What (I believe) sreten says is that you have to concider the Baffle step diffraction loss when choosing the right bass driver. For simplicity you can look for single woofers that have 6dB more output (2,83V/1m) than the other drivers or two drivers with the same sensitivity as the others. Or turn it the other way... if you use a single woofer with sensitivity of 88,5dB the resulting speaker sensitivity will be 82,5dB.
Further, I would choose to go with 8"-ers rather than one 10" in that cabinet. The capacity of two decent 8" woofers in a BR-enclosure can be "more than enough"

[sreten]

Hi,

No. Read the links and understand BSC (baffle step compensation).

An 88.5dB woofer is good for around 83 to 85 dB mid /treble sensistivity.

Two 88dB 8 ohm woofers in parallel will be 94dB and good for around
91dB mid / treble sensitivities, with minor attenuation for upper units.

rgds, sreten.

[gaborbela]

Thanks
The hole is open for a 10" driver.
2PC 8" woofer not even come close to get F3 close to Hz30
I do not build speaker from 75L get 40Hz. That is a BS.
Sorry but that is my opinion about that.
If a system does go close to 30Hz I'm not interested on it.
In one word I do not like to imagine the bass when I listening to music!
Thanks for the advise
Greetings Gabor

[gaborbela]

Actually I think about these woofer
first one
Scanspeak Discovery 26W/8534G 10" Aluminum Cone Woofer 8 ohm: Madisound Speaker Store
another
ScanSpeak Revelator 26W/8861T 10" Woofer: Madisound Speaker Store
these probably would be the best (I think I chose these)
http://www.lautsprechershop.de/pdf/alcone/ac10he.pdf
I did sim on these drivers when that stupid program was OK.
Now I taught before I invest I want to run a last test and the program no longer works.
I'll wait until will work again or I get help from someone.
You know it is a lot of money just to go on and buy something. That is why I wanted to sim again.
Thanks
Greetings

[sreten]

Originally Posted by gaborbela

Thanks
The hole is open for a 10" driver.
2PC 8" woofer not even come close to get F3 close to Hz30
I do not build speaker from 75L get 40Hz. That is a BS.
Sorry but that is my opinion about that.
If a system does go close to 30Hz I'm not interested on it.
In one word I do not like to imagine the bass when I listening to music!
Thanks for the advise
Greetings Gabor

Hi,

BS is not knowing your physics and acoustics, feel free to imagine both.

Two 6.5's are equivalent to a 10", moreorless, and target sensitivity
for a 3 way is 1 to 3db above one of those drivers realistically.

In room F6 and F10 actually matter far more for quality.

Two Scan Speak 18W8531G will work vented in 75L.
They look decent enough to me tuned to 28Hz.
(F3 around 35Hz, F6 around 28Hz, F10 around 23Hz.)

rgds, sreten.

[Tytte71]

Originally Posted by sreten

Hi,

No. Read the links and understand BSC (baffle step compensation).

An 88.5dB woofer is good for around 83 to 85 dB mid /treble sensistivity.

Two 88dB 8 ohm woofers in parallel will be 94dB and good for around
91dB mid / treble sensitivities, with minor attenuation for upper units.

rgds, sreten.

6dB is not true for normal listening environments. Shall try to be more accurate in the future...

[gaborbela]

Hello
Probably I wasn't clear enough.
The hole on the enclosure face plate already cut for a 10" woofer.
To talk about anything else is in wain.
I have to live with what I have.
Sorry about the BS! I got frustrated that stupid program was OK even last week now when I wanted to do the last simulation no longer working.
I do not want to talk much about theories I just want to run some sim. on that 3 woofer.
If someone want or willing to help me please more than welcome. I'm not planing to open a speaker shop. It is about one speaker.
Did someone at least took a look on those drivers?? Thanks guys! Honestly.

Greets Gabor