My Own Harbeth’s + JBL's.... 3 Way Passive Speakers
- Thread starter sadik
- Start date
M
mpw
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Bro..
Stay at home
These things can wait
Regards
Stay at home
These things can wait
Regards
Hi Sadik,
They look really nice. How do they sound? When you can please share some details of the equipment you are partnering the speakers with, the music and how it sounds to you. Once the curfew ends maybe a local FM could audition it too.
i am happy there are people like you handcrafting speakers, with passion and care. Congratulations and best wishes.
They look really nice. How do they sound? When you can please share some details of the equipment you are partnering the speakers with, the music and how it sounds to you. Once the curfew ends maybe a local FM could audition it too.
i am happy there are people like you handcrafting speakers, with passion and care. Congratulations and best wishes.
Thank you Bro @Goldenears . Initial impressions are very good. I just need to tune a little bit in step response. I am learning about same.
Below is the FR graph. I am running these speakers with my Class A Jean Hiraga Amp 30 watts per channel. My Audio chain is
PC (Videos from youtube as my source) ----> Jean Hiraga Class A Amp ----> Speakers.
Thank you Bro @drkrack & Sorry Right now i don't have the video but you can have some idea by above FR graph. They are really sounding very good and far beyond my expectations.
Thank you @sunilj. Right now the work is pending. To flush mount or not i will decide it later. Chances are that i will mount the tweeter from back side of front baffle. And after taking measurements if there is improvent in step response then i will leave it that way only.
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Hi Sadik,
Thanks for sharing the FR graph. Looks like the general trend of the measures are good. I am sure you are working to tune it more.
I came across this website and thought I’d share it in case you haven’t seen it before.
audioxpress.com
Here is one on speakre enclosures. Hope you find them of interest.
audioxpress.com
last one:
audioxpress.com
Thanks for sharing the FR graph. Looks like the general trend of the measures are good. I am sure you are working to tune it more.
I came across this website and thought I’d share it in case you haven’t seen it before.
New Speakerbench Online Tool for Assisting in Speaker Design Calculations
Speakerbench is a web-based application created by Jeff Candy (San Diego, CA) and Claus Futtrup (SEAS, Norway), combining several special-purpose modules aimed at low-frequency analysis and design of loudspeakers. According to the authors, the online tool is made available to whoever might find...
Here is one on speakre enclosures. Hope you find them of interest.
More Developments in Loudspeaker Enclosure Materials
In this report, Klasco once again shares his knowledge with loudspeaker enclosures and reports on the progress in enclosure materials and technologies in 2020. And if someone has interesting things to share about wood enclosures, composites, plastics, improved plastic-based formulas, ABS/PA...
last one:
Adhesives, Coatings, Sealants, Dispensers, Patents and More Loudspeaker Topics in Voice Coil July 2020
The July 2020 edition of Voice Coil magazine is a strong issue, offering the most comprehensive sourcing directory on Adhesives, Coatings, Sealant, and Dispenser Providers in 2020, a Spotlight article by David Lindberg on Waterproofing of Audio Devices, plus the always brilliant patent reviews...
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Between 20k and 1.2k, the response is smooth +/-4 dB , interesting bump at 3,500 & 1,800 though. Is the cabinet width 16", that could be the 800k bump, but you have one at 400 (32") as well.
If you mount the tweeter from inside, you'll probably have phase delay. Any thoughts on handling the cabinet thickness, between TW and baffle front?
If you mount the tweeter from inside, you'll probably have phase delay. Any thoughts on handling the cabinet thickness, between TW and baffle front?
I forgot to mention. This measurement is done at 1 mtr distance from Enclosure. The Mic was placed at a center point between the Highs and Mids driver. My room is not acoustically treated and there are many reflection points. Secondly i have just bought the measuring device & i am in learing phase about how to get proper measurements. ( I am not an electrical guy nor i am a genious in acoustic field so any guidance towards this direction will be very helpful to me. A link of any videos or reading stuff with some examples to understand what is going on will be aof a great help)
The Audio Interface is Behringer U-Phoria UMC22
The Mic is Behringer ECM8000
By placing the tweeter at the back side i guess i will have a good step response (I need to try that). however can you make this statement more clarified " Any thoughts on handling the cabinet thickness, between TW and baffle front? " i did not understood it.
I think you'll be fine. Build and tweak it. Its easy to get lost into the 'small' things. Just enjoy the effort 
Didn't understand what you mean by placing the tweeter on the 'back side'. Is that a second tweeter ?
Didn't understand what you mean by placing the tweeter on the 'back side'. Is that a second tweeter ?
I think you'll be fine. Build and tweak it. Its easy to get lost into the 'small' things. Just enjoy the effort
Didn't understand what you mean by placing the tweeter on the 'back side'. Is that a second tweeter ?
The Front Baffle is removable, What i mean was, I will mount the tweeter from the back side of front baffle a sort of time alignment of voice coil between mid and highs just like below image ( Physical time alignment)
That offset is a good idea but I've experienced edge diffraction from the tweeter with that design, a bump in the response. You can treat in the crossover, if required.
The other thing is the c/c distance between TW and Mid, if you make it less than the crossover frequency there is enough overlap between them, not avoid a hole or dip in the response. Can you provide measurements of the cabinet and distance between the drivers.
The other thing is the c/c distance between TW and Mid, if you make it less than the crossover frequency there is enough overlap between them, not avoid a hole or dip in the response. Can you provide measurements of the cabinet and distance between the drivers.
Attachments
Crossover Points : 440 Hz & 2.2kHz
Please check the video for internal. The Crossover has its own chamber which is sealed. I have used hot glue to seal the holes of wires from crossover chamber to Main Enclosure. Even the Mid has its own sealed chamber.
The crossover has been done & the speakers are sounding very good.
Video Link 3 Way Enclosure - Internal View
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