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Help me to design transmission line for TG9FD-10-04
Help me to design transmission line for TG9FD-10-04
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Old 20th July 2019, 03:15 PM   #11
xrk971 is offline xrk971  United States
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Help me to design transmission line for TG9FD-10-04
Nice work! This speaker can probably use a BSC with 1mH and 6.8Ohm for more balanced treble/bass. Play around with the resistor though as back wall bass reinforcement may reduce the need for a larger R.
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Old 21st July 2019, 12:50 PM   #12
gadut is offline gadut  Indonesia
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Help me to design transmission line for TG9FD-10-04
finished 1 enclosure today with 1 side panel removable for stuffing access. initially it should be placed on the rack beside tv, but the room sucked all bass even bigger alpair 10p in minionken get the same no bass. but when it's moved to the corner then it shines

@X
it simple enough to play with my tone control bass-mid-treble, i'm searching now on aliexpress for integrated class d with tone control and maybe extra bluetooth
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Last edited by gadut; 21st July 2019 at 01:02 PM.
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Old 21st July 2019, 04:14 PM   #13
perceval is offline perceval  Taiwan
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Quote:
Originally Posted by gadut View Post
initially it should be placed on the rack beside tv, but the room sucked all bass even bigger alpair 10p in minionken get the same no bass. but when it's moved to the corner then it shines
No wonder with that wall behind the speakers.

To get bass, you would need a speaker that outputs with the vent right next to the floor, front facing preferably.
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Old 21st July 2019, 06:33 PM   #14
Bare is offline Bare  Canada
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Interesting build.. But frankly expecting Any bass out of 2" cones is 'optimistic' if not delusional .
Gotta fit a decent Sub OR use Large, good Quality drivers.. has been my experience, after ~50 years of DIY adventures.
While here: WHY do these teeny drivers ..all... claim to be Twice the size their cones actually measure at ??
About as convincing as claiming that one's Member is 12" long
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Old 21st July 2019, 10:14 PM   #15
lung is offline lung  Germany
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Originally Posted by gadut View Post
while waiting wood filler dried on my subwoofer build, i started to build X design which i think it's simplest one. rabbet join result is getting better now

Made this speaker 2 years ago. Sounds very good with TC9 8 Ohm.
For bufflestep kompensation i used 1 mH and 10 Ohm as
xrk971 recomends.

Thanks for sharing.
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Old 22nd July 2019, 03:03 AM   #16
xrk971 is offline xrk971  United States
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Help me to design transmission line for TG9FD-10-04
Gadut and Lung,
Both of you made a nice box for this speaker. I like how compact it is - works well for desktop or bookshelf.

Gadut, make sure you use gasket for side panel. Small pinhole leaks will destroy the bass. Like a leaky finger on a flute playing low C.
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Old 22nd July 2019, 08:36 AM   #17
gadut is offline gadut  Indonesia
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Help me to design transmission line for TG9FD-10-04
Quote:
Originally Posted by lung View Post
Made this speaker 2 years ago. Sounds very good with TC9 8 Ohm.
For bufflestep kompensation i used 1 mH and 10 Ohm as
xrk971 recomends.

Thanks for sharing.
nice build

Quote:
Originally Posted by xrk971 View Post
Gadut and Lung,
Both of you made a nice box for this speaker. I like how compact it is - works well for desktop or bookshelf.

Gadut, make sure you use gasket for side panel. Small pinhole leaks will destroy the bass. Like a leaky finger on a flute playing low C.
that's why i put papertape inside but yeah not fully-sealed yet, i will put same papertape on outside left side panel which hopefully will seal the air

the bass is very thin if not placed on the corner which look like too low port tuning, my internal dimension is 4x13.5x9.5 inch a bit different from original ginl design due to my rabbet join. is this big issue? I will try to increase or decrease port length if it can change the sound
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Old 22nd July 2019, 11:48 AM   #18
xrk971 is offline xrk971  United States
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Help me to design transmission line for TG9FD-10-04
Tone controls may not have the right filter high-shelf attenuate function that a classic BSC with a 1mH coil and resistor in parallel have. Basically you want a flat -3dB to -5dB shelf above 900Hz or so with a -6dB/oct slope at the filter frequency. Bi-quad EQ from a DSP can also do it of course.

Try making port a bit shorter - however, this speaker just isn’t a bass generator. A 0.40X Karlsonator has more full bass if you ever want to try that.
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Old 23rd July 2019, 01:12 AM   #19
gadut is offline gadut  Indonesia
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Help me to design transmission line for TG9FD-10-04
Quote:
Originally Posted by xrk971 View Post
Tone controls may not have the right filter high-shelf attenuate function that a classic BSC with a 1mH coil and resistor in parallel have. Basically you want a flat -3dB to -5dB shelf above 900Hz or so with a -6dB/oct slope at the filter frequency. Bi-quad EQ from a DSP can also do it of course.

Try making port a bit shorter - however, this speaker just isnít a bass generator. A 0.40X Karlsonator has more full bass if you ever want to try that.
I have several inductor starting from 0.5 to 3.3mH but the problem is that all the labels are gone. i might start from the smallest one

indeed what bass do you expect from that tiny driver, but my creative T20 with 2.5" has more slam but tuned higher for sure. just want to maximize the output from MLTL because the cone already jump in-out but lean bass
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