checking horn measurments are correct

sorry yes i used the highest freq ill re plot using the lowest........ doh.... :crazy:

bee wrote: What are you planning to use your 6" for........

Mines going in a 'compact' horn loaded 3 way box. Below will be a 10" on a split horn, like a rounded w bin, bends rather than folds. This covers 90hz up to ~500hz. The 6" mid does 350hz to 3.5khz, so I've got some flexibility with the crossover point between these. Above will be a 1" comp on a smallish horn in the mouth of the 10" lowmid section.

These are the prototypes of the 10" and 6".





Dimensions of finished bow will be 50cm wide, 70cm high and ~80cm deep. It's a trapezoid box, 12.5degree each side.

good work fella very agressive looking design :clap:

i have moved on from my ruff paper and pen measurements, to plotting using akabak. Does any one know how to sim a phase plug using akabak....... :crazy:

the plots below are my first attempts with akabak...... The driver i am using is the b&c 6mdn44 6" driver.



whats your thoughts! does any one know how to sim a phase plug using akabak, and what do you think of my programming for akabak can any one see any mistakes i may of made....

System 'S1'

Driver Def='Dr1' Node=1=0=2=3

Duct 'Du1'

Node=2=0
wd={pi*5e-2}
hd=2mm
len=2.5mm

Enclosure 'rear chamber' Node=3

Vb=2.0L

Horn 'H1' Node=2

dth=10cm
WMo=36cm
HMo=24.0cm

Len=24cm vf=1cm3 conical
x=0 y=0 z=0
Hangle=0 Vangle=0
Wedge=0cm Hedge=0cm

Def_Driver 'Dr1'

SD=132cm2
fs=140Hz
Mms=11.0g
Qms=2.8
Qes=0.46
Re=5.4ohm
Vas=2.7dm3
Bl=11.0Tm

your thoughts and help are much needed and appreciated.

i have looked into modelling a phase plug with akabak if im correct by making (vf) a higher value this would include the space a phase plug takes up!!!!!....... im i correct with this.....

below is the updated plots and code...



System 'S1'

Driver Def='Dr1' Node=1=0=2=3

Duct 'Du1'

Node=2=0
wd={pi*5e-2}
hd=2mm
len=2.5mm

Enclosure 'rear chamber' Node=3

Vb=2.0L

Horn 'H1' Node=2

dth=11cm
WMo=36cm
HMo=24.0cm

Len=24cm vf=132cm3 conical
x=0 y=0 z=0
Hangle=0 Vangle=0
Wedge=0cm Hedge=0cm

Def_Driver 'Dr1'

SD=132cm2
fs=140Hz
Mms=11.0g
Qms=2.8
Qes=0.46
Re=5.4ohm
Vas=2.7dm3
Bl=11.0Tm

Whats your thoughts guys...... if anybody uses akabak is my programming ok im a total noob with this app....

ok im still playing around with akabak ill post some more plots later

Hi bee,
try to model it on HR than export the input screen in the akabk format than open it and face to your sim.

cheers, bitzo

hi guys the plots below is the most recent version of the 6" horn designed in akabak.



script below..............

System 'S1'

Driver Def='Dr1' Node=1=0=2=3

Enclosure 'rear chamber' Node=2

Vb=2.0L

Horn 'H1' Node=3

dth=11cm
WMo=20cm
HMo=17.5cm

Len=27.3cm conical
x=0 y=0 z=0
Hangle=0 Vangle=0
Wedge=0cm Hedge=0cm

Def_Driver 'Dr1'

SD=132cm2
fs=140Hz
Mms=11.0g
Qms=2.8
Qes=0.46
Re=5.4ohm
Vas=2.7dm3
Bl=11.0Tm



Re: bitzo your comments, i have plotted the same horn using Horn resp the plots below are from horn resp then exported in to akabak unchanged from horn resp.



thoughts please.....