I'm hacking away with the foam now - sadly no knife better than a sharp box cutter, but it's getting there.
I was going to order the speakers on PE, but apparently they won't let me pay them, so I can't buy anything...
I can't afford the 3FE22 as part of my budget for now, so I'll have to go with the 3FE25.
I was going to order the speakers on PE, but apparently they won't let me pay them, so I can't buy anything...
I can't afford the 3FE22 as part of my budget for now, so I'll have to go with the 3FE25.
unaHM,
Great to hear you are getting started. If you have an account on Amazon, they also resell for PE, so your payment goes through Amazon, if that helps any. Costs the same. The 3FE25 should work fine, I would install it but having too much fun enjoying listening to my speaker with the 3FE22 for a bit before getting back to modding it. Just really loving the sound from my music collection. Some songs I am hearing stuff I did not know was there. Lots of detail and low level content is now audible.
Great to hear you are getting started. If you have an account on Amazon, they also resell for PE, so your payment goes through Amazon, if that helps any. Costs the same. The 3FE25 should work fine, I would install it but having too much fun enjoying listening to my speaker with the 3FE22 for a bit before getting back to modding it. Just really loving the sound from my music collection. Some songs I am hearing stuff I did not know was there. Lots of detail and low level content is now audible.
🙂 I'm glad too that it's so successful! Especially considering that you have built so many experiments to weigh this design against!
Thanks for the hint, I'll see what I can do.
One question I've just discovered. Are the flat panel dimensions for this 22.4 x 28", or are they scaled down as well (15.68 x 19.6")?
The sheets of foam core board I have are 20x30".
Thanks for the hint, I'll see what I can do.
One question I've just discovered. Are the flat panel dimensions for this 22.4 x 28", or are they scaled down as well (15.68 x 19.6")?
The sheets of foam core board I have are 20x30".
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Very nice song. I just bought it for $1 on Amazon download. 🙂
Nothing like instant gratification.
Trynergy with W4-1320SJ and Sony 5.5in woofers
I got a request for a Trynergy with some drivers that a member had on hand. The Tang Band W4-1320SJ (Nd magnet) driver seems to work well according to the sims. The salvaged Sony 5.5 inch woofers however, will need to be run qnty 4 in parallel for a nominal 2ohm load in order to to have enough sensitivity to work with this horn (even with the W4-1320 gain set at 0.4x). So a 2ohm stable amp will be needed for the woofers. This is not hard if you use a class D amp like TPA3116D2 in PBTL mode. This particular setup will only go down to about 120Hz rather than 100Hz or lower with the 6.5in PE buyout woofer. The dimensions of the speaker are assumed to be the same as the 0.7x Trynergy with same 9 liter rear sealed chamber for woofers and 3.2 liter rear chamber for full range driver.
Here is the freq response at 2.83V to woofer and 1.13v to fullrange at 1m:
Here is the impedance:
Here is the cone displacement at 10v corresponding to xmax (not much movement due to excellent horn loading):
Here is max SPL of 110dB at xmax:
I think it looks like it can work. Just be prepared to use a sub for below 120Hz content.
I got a request for a Trynergy with some drivers that a member had on hand. The Tang Band W4-1320SJ (Nd magnet) driver seems to work well according to the sims. The salvaged Sony 5.5 inch woofers however, will need to be run qnty 4 in parallel for a nominal 2ohm load in order to to have enough sensitivity to work with this horn (even with the W4-1320 gain set at 0.4x). So a 2ohm stable amp will be needed for the woofers. This is not hard if you use a class D amp like TPA3116D2 in PBTL mode. This particular setup will only go down to about 120Hz rather than 100Hz or lower with the 6.5in PE buyout woofer. The dimensions of the speaker are assumed to be the same as the 0.7x Trynergy with same 9 liter rear sealed chamber for woofers and 3.2 liter rear chamber for full range driver.
Here is the freq response at 2.83V to woofer and 1.13v to fullrange at 1m:
Here is the impedance:
Here is the cone displacement at 10v corresponding to xmax (not much movement due to excellent horn loading):
Here is max SPL of 110dB at xmax:
I think it looks like it can work. Just be prepared to use a sub for below 120Hz content.
Attachments
Interesting project.
Rather alarmed at the idea o cutting foam board with razor blades. Craft knives can be clumsy so recommend going the graphic designer's route and using scalpels. Good art supplierS sell them and there's a neat Swann retractable holder to keep the blades out of trouble. They're very sharp and very manoeuvrable. I've used them a fair bit with foam board.
Apologies if this is something you're already doing - I haven't followed the entire foam board enclosure revolution on here 🙂
Back to the speakers ...
Rather alarmed at the idea o cutting foam board with razor blades. Craft knives can be clumsy so recommend going the graphic designer's route and using scalpels. Good art supplierS sell them and there's a neat Swann retractable holder to keep the blades out of trouble. They're very sharp and very manoeuvrable. I've used them a fair bit with foam board.
Apologies if this is something you're already doing - I haven't followed the entire foam board enclosure revolution on here 🙂
Back to the speakers ...
This was the missing link on thirth, did make a little mistake I see.
my excisting hybrid amp who play now (all 4 years incl torture).
6C4N-EB hybride - YouTube
regards
Try this for me, the phillips who I have use earlyer.
has 93 dB I watt.
Sd=226.98cm2
Bl=5.65Tm
Cms=7.00E-04m/N
Rms=1.34Ns/m
Mmd=21.82g
Le=0.50mH
Re=4.10ohm
Filter can put in a box in a corner.
and the bass tapped horn has his own amp and will work fine without big coils.
The inductor don,t need thick wire it is only paralelled get rid of peak, how smaller the coil, and bigger the cap degreading Q give more bandwide.
It is indeed from hornresp.
I do not like dsp, as high end guy less electronics better sound, so bigger coils.
regards
kees
Sd=226.98cm2
Bl=5.65Tm
Cms=7.00E-04m/N
Rms=1.34Ns/m
Mms=21.82g
Le=0.50mH
Re=4.10ohm
Fs=39hz
Speakers are 4 ohm, so need in series.
This ones are also nice visatons, this type has also a 6.5 inch, bu 8 inch is needed I think.
http://www.visaton.com/en/chassis_zubehoer/tiefton/w200s_8.html
Is this
BR_dia=7.0*0.0254; | BR port dia inches
BR_len=12.0*0.0254; | BR port length inches
7.0 is that inches? because x 2.54 is17.78 cm pretty big.
12 inches length? x 2.54 = 30 cm. I talk here about a bassreflex port?
When I do 7.0 x 0.0254 I get 0.1779 cm .
so explane, whe not just cm, or is this not possible with akabak.
regards
Bl=5.65Tm
Cms=7.00E-04m/N
Rms=1.34Ns/m
Mms=21.82g
Le=0.50mH
Re=4.10ohm
Fs=39hz
Speakers are 4 ohm, so need in series.
This ones are also nice visatons, this type has also a 6.5 inch, bu 8 inch is needed I think.
http://www.visaton.com/en/chassis_zubehoer/tiefton/w200s_8.html
Is this
BR_dia=7.0*0.0254; | BR port dia inches
BR_len=12.0*0.0254; | BR port length inches
7.0 is that inches? because x 2.54 is17.78 cm pretty big.
12 inches length? x 2.54 = 30 cm. I talk here about a bassreflex port?
When I do 7.0 x 0.0254 I get 0.1779 cm .
so explane, whe not just cm, or is this not possible with akabak.
regards
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I should have put a comment there that this was used as both a BR port and when made very large, acts as if it is an open baffle. That was one of the permutations I went thru before realizing that there is not bass extension if I went the OB route on the woofers. To get a sealed rear chamber, make the BR_dia very small like 0.001 inch. (or put an "OFF" switch before the Duct specifier for the BR port)
If you want to use as a regular BR port, set it to whatever tuning you want via the dia, length, and volume of the chamber.
A open baffle do not work, to small, and you need a rear box to make it work on a horn.
Thanks for the explaning, because it is a important issiue.
regards
kees
Thanks for the explaning, because it is a important issiue.
regards
kees
Kees,
Here is the sim of the Trynergy with your selected drivers. I am using the FRS8 for the full range with a 0.45x gain relative to Phillips. I am assuming the volume of the driver chamber between cone and horn wall is 0.5 liter and I am using a 6.5cm dia injection port. Making it bigger did not help, and making volume of driver chamber did not help flatten or extend lower than 100Hz. The FRS8 somehow has a falloff with higher frequency from its T/S params. Not sure why. Overall your system looks good, the dual Phillips are in series for 8ohms nominal so will not appear as sensitive as a 4ohm setup with 4 drivers at 2.83v.
Freq response at 2.83v on Phillips and 1.28v on FRS8:
Impedance:
Cone displacement at xmax with -24dB/ocy HPF at 100Hz with 30volts:
Corresponding max SPL at xmax:
Electrical power required at 30v drive voltage:
Attachments
Latest sound clip of Trynergy with 3FE22 and sub in 3-way
Here is a clip from the Patricia Barber song "A Taste of Honey" that Kees was playing through his "no baffle" speakers. Mine don't sound quite as forward as Kee's YouTube clip - but then it is balanced in frequency response to be flat. Very good song for testing speakers - kind of along the lines of November in Montreal by Ann Bisson. Let me know what you all think of the song as played on the Trynergy. In person, there is quite a bit of reverbration, not from my room or the speakers but in the recording itself. Sounds like it was recorded in a pub or some public space without studio sound treatments. Her voice is haunting though and that comes through quite well.
Here is a clip from the Patricia Barber song "A Taste of Honey" that Kees was playing through his "no baffle" speakers. Mine don't sound quite as forward as Kee's YouTube clip - but then it is balanced in frequency response to be flat. Very good song for testing speakers - kind of along the lines of November in Montreal by Ann Bisson. Let me know what you all think of the song as played on the Trynergy. In person, there is quite a bit of reverbration, not from my room or the speakers but in the recording itself. Sounds like it was recorded in a pub or some public space without studio sound treatments. Her voice is haunting though and that comes through quite well.
I have alter your script for the visaton W200S woofers 8 inch.
need some change in the allpass filter for get this respons.
and afcourse rear box, BR and injection ports are changed.
two woofers used.
and visaton FRS8M as replacement for your horn driver.
How can I do multiple scrips in akabak? like the hornresp exports to
make one sim of all. Is this difficult?
regards
kees
need some change in the allpass filter for get this respons.
and afcourse rear box, BR and injection ports are changed.
two woofers used.
and visaton FRS8M as replacement for your horn driver.
How can I do multiple scrips in akabak? like the hornresp exports to
make one sim of all. Is this difficult?
regards
kees
Attachments
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Note that in my script there are different sections labeled with the 'System' specifier. Each system is independent 'node-wise' but the sound from all systems are all summed up as one in the final sim. Each 'System' can be a different script for a speaker. However, the definitions for all systems can only be stated once at the top. I use different systems for implementing and showing the cross-over filters for each section. If you wanted to include the cone-cone interaction between the woofer and the tweeter then they need to be in the same 'System'. You are limited to 52 nodes per system though and filters affect all speakers in the same system equally. However, if you implemented electronic passive XO circuits to effect the filtering, they can be in the same system. I don't design passive XO's so I split them to effect XO's via a specified filter like -24dB/oct high pass or low pass.