hey guys. I never wanted to say this but I think my speaker cabinet are not tune right.I get some bass but not the way I thought I would. does any one know a company or some one who tune speaker cabs. My speakers are jbl 2245h -2202h -2425h-2404h. the cabs are 54 height- 24 witdh- 19 deep. I was told the ports should be 5 inch diam - 5 5/6 inch long that should be tune around 26 hz. the cabs are birch wood 3/4 thick thanks for any info gene
One port per cabinet?
You should measure your current box tuning. Do you have a tone generator or test-tone disc?
What's the internal volume minus bracing, drivers, and subenclosure for the 2202. If the horn is internal on the 2425 which one are you using. You need to subtract that as well.
Rob
Dood...
Everytime you post problems with your DIY build, you ignore my questions - yet you keep returning here unhappy.
I am not trying to be rude, but answer some detailed questions - OK?
Here, you describe Your Cabinet Dimensions you mention a 12-ft3 volume. That is large for a 2245, depending upon your tuning. You ignored my question on what the tuning was. Do you know what it is?
I also wonder if your 2202H is NOT in a separate subenclosure (bad), but you only post coarse dimensions of your cabinet
and then pm Ian for help.Originally Posted by gene
That is fine, but dood, you are drifting and wasting all the combined talents here.
DESCRIBE YOUR CABINET BUILDS IN DETAIL, or we all join you in pissing up a rope...
bo
"Indeed, not!!"
I hope it works out better than my last encounter with a 4 way diyer.
Gene,
My I ask why you think they are not tuned right?Can you describe what you are hearing? Is it biamped?
The cat might be sleeping in the Port..No kidding is happens!
The Vas is so large compared to the box volume Vb that some small variation will not upset it to much. More likely the vent will need some adjustment.
My last recollection of a box tuning Fb for that driver around 10-11 cu ft was 27 hz.
Give me a picture of what you have
Thanks
What combined talents are they.Dood...
Everytime you post problems with your DIY build, you ignore my questions - yet you keep returning here unhappy.
I am not trying to be rude, but answer some damned questions - OK?
Here, you describe Your Cabinet Dimensions you mention a 12-ft3 volume. That is large for a 2245, depending upon your tuning. You ignored my question on what the tuning was. WHAT IS IT?
I also wonder if your 2202H is NOT in a separate subenclosure (bad), but you only post coarse dimensions of your cabinet
and then pm Ian for help.
That is fine, but dood, you are drifting and wasting all the combined talents here.
DESCRIBE YOUR CABINET BUILDS IN DETAIL, or we all join you in pissing up a rope...
Auto sub change outs are your speciality.
Gene, take no notice of Bo. He who knows not the difference of an Oval and a Round Port
We really could use some additional info... are your cabs actually 12 cu ft or are there sub chambers, bracing , etc. to be subtracted. If there isn't quite a bit of bracing then you could be losing a lot of bass energy due to wall flexing. This will muddy the sound as well as lower the SPL and extension.
Widget
This is an amazing little thing.
http://www.partsexpress.com/pe/pshow...TOKEN=24432096
4406, 4412A, L100, L100t3 (3 pair), L1, L7, 4645C, 4660A, 4695B, SR4735 and various DIY JBL Pro loaded systems.
It was reviewed to some extent here: Woofer Tester II
But, it would be handy if gene came back with some detail on his cabinet construction, and maybe a few pics, too...
bo
"Indeed, not!!"
One thing I noted was the 2245 is used with a passive network. That will effect the bass quality for certain regardless of what amp or tuning he tries.
when I post my problem yesterday I was madd. and I gave the wrong info on the cabs.the right measurements are 54 inch tall- 29 inch wide- 19 inch deep. the 2202 is in a seald cab . about 14 wide 14 tall and 8 inch deep. the cab is birch wood 3/4 thick. the horns are mounted on the front of the speaker cab with weather proof sponge like materials. no air is coming from the side of my horns. cross over is passive 290 hz 1200 -5000. xover is not biamp. ports are two ports per cab 5 inch diam- 5 5/6 inch in lenth they suppose to be tune around 27 hz. they have bass but not like the L112 or L56 If I stand to the side of my speaker I can her more bass but if I stand in front of them the bass is less. the guy how gave me the ports measurements said he took my in side measurements of my cab and my 2245 vas qmax etc.and he came up with the ports measurements the cabs do have brace , in the middle of the cab were the seald box is for the midrange and some kind of brace in each corner of the speaker cab I hope I answer all of your question . 2344a birdal horn is mounted to the 2425h
Hello
Have you checked to be sure that the 18's are in phase. The simple battery test work, use just a 1 1/2 volt battery.
Sorry if this has already been tried or suggested.
Mike Caldwell
jbl 2245 H thread
Hello I just bought a jbl 2245 H woofer from vintage tube amp or uncle spot speaker repair. the problem I am having is the woofer look the same as the other one but the color is gray kind of orange -redish .the surround is not foam its the same surround thats on the 4312 woofer. what about the low end responce will this effect any thing
bo
"Indeed, not!!"
This may not be applicable but I once had a 2245 that looked like it had a 2241 cone (but with foam surround). It never did sound as good as the original 2245 that I have. The new re cone came from OCS. I decided to just sell it and would work on finding a different one. It would never play quite as low as my original and would pop all the time. I also tried to run a 30hz signal at about 10 watts for 30 hrs but that changed nothing.
Always fun learning more.......
from "D+S Sound Labs"
bo
"Indeed, not!!"
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