I'm looking for drawings of bass horns with 128h speakers.
Obviously this is a high-end project. So, it should be linear between 30 and 100 hz.
Size doesn't matter!! (no annoying wife)
Don't know a whole lot about the theory about bass-horns. But, please specify the increase in effeciency and curves so i can see the frequency response.
Kindly Michael
Hi Michael,
I can´t give you a concrete plan for a bass horn, but I could give you an advice regarding the driver. I have no first hand experience with the driver but by looking at the T/S parameters, this driver seems to belong in the vented box department. Low Fs, low BL and a little bit to high Q. I know you said the size of the horn wouldn´t matter but if we are talking 30Hz then we also are takling around 1m3, probably even bigger. Ive been in bass horn thoughts for a long time but been put of mostly because the size issues.
/Moslty
Linear (flat) down to 30Hz means a 5.75m long horn path (half wave). I am sure you have other options to reach your goal.
ok, what if i restrict size to, 2.5-3meters wide and depth to 3meters and hight to 1meter?
as i said before, i don't care about size. if i have to build the cabinet in my room above the livingroom, i will
all that matters is the sound.
PS: i have 4 128h's
Then sell your 128h and get drivers suitable for a horn.Originally Posted by kawmic
because of their sensitivity (91db). i wanna use 128h's because i love their sound
Michael
Swap the 128h for something better suited for horns, or pipes. The fs is a bit too low. If you want to reach 30 look for a driver with fs around 35-40 Hz. Check out the hornish pipe I made for the 2226.
Ok. i don.t like 2226's. i wanna use my 128h's. what do you suggest then? should i strive for lower bass, say 25hz?
what about a cab with 2 or more 128h's?
You wont like their sound outside of a bassreflex cabinet. It seems you are pretty new at "all that" and I suggest you read a bit about the principles and requirements of horn loading. The internet is your best friend.because of their sensitivity (91db). i wanna use 128h's because i love their sound
why can't i use 128h's?
Reread previous posts. Especially post #2. It was kindly explained right from the beginning by Mostlydiy. BTW Have you also gathered the T/S parameters for your 128 to verify if it can be used in a horn? Have you read about horn loading?
yes i have all parameters. where do you suggest i read about basshorn principles?
and if i use a unit with higher fs, wouldn't that affect the deep bass?
Michael,
When I were new to horn loading speaker I asked a similar question at Romys site and the answear "You have to do your homework". I was kind of annoyed by the reply put the more I studied horn principles the more I realised that its quite a complex design. I would advice you to learn to use Hornresp and play around with it. Its quite hard to get into but its a wonderful tool when simulating horn enclosured coupled with different drivers. When you are familiar with the program you will see for yourself why the 128 isn´t very well suited for hornloading. I belive that there is a several hundred sites long thread about that software on diyaudio.
/Mostly
so i'm gonna look for a program called hornresp?
ok, i found it. thnx for all your help
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