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Multi-Way Conventional loudspeakers with crossovers

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Old 8th December 2019, 07:24 PM   #3231
tonskulus is offline tonskulus  Finland
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Join Date: Aug 2004
Location: Home
78875948_10157397192303127_3259171503765192704_o.jpg

My latest "just for fun" system for vinyl records. Can't stop listening! So accurate, transparent and wide stereo imaging. Close your eyes and everything you hear is drawn clearly in front of your closed eye vision!
With digital records, 2445J indeed sounds a bit metallic and harsh >7kHz but actually very sweet with vinyl. Much much better than Alpairs alone.

Alpair 10.3 ml-tqwt + JBL 2445J/2380A, crossed at 600Hz. 0.5ms delay.
Minidsp 2x4
Alto 2x31 EQ for horn correction
Bose entero 4400 4-ch amplifier
Onkyo cp-1027, Ortofon 5e cartridge
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Old 8th December 2019, 11:36 PM   #3232
nationalkid is offline nationalkid  Japan
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Join Date: Apr 2012
Location: tokyo
Quote:
Originally Posted by nationalkid View Post
I tried the bass reflex method because there was no bass.
Measured with "DSSF3" and "omnimic".
and Inside.
Attached Images
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File Type: jpg omnimic-3way-sub.jpg (84.5 KB, 820 views)
File Type: jpg P1000235x.jpg (161.8 KB, 837 views)
File Type: jpg P1000232x.jpg (161.7 KB, 830 views)
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Old 8th December 2019, 11:57 PM   #3233
nationalkid is offline nationalkid  Japan
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Join Date: Apr 2012
Location: tokyo
Enclosure: Bass reflex,23L
Tweeter: Dyton AMT mini-8,88dB/W
Squawker: Parc Audio DCU-F081PP, 83dB/W,1.3L
Woofer: SB Acoustics SB13PFC-4, 89dB/W
Network: 300Hz, 5kHz cross,12dB/oct
Attached Images
File Type: jpg P1000600x.jpg (94.5 KB, 812 views)
File Type: jpg untitled.jpg (65.3 KB, 169 views)
File Type: jpg 3way.jpg (261.7 KB, 121 views)
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Old 9th December 2019, 09:15 PM   #3234
nationalkid is offline nationalkid  Japan
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Join Date: Apr 2012
Location: tokyo
Quote:
Originally Posted by nationalkid View Post
Enclosure: Bass reflex,23L
Tweeter: Dyton AMT mini-8,88dB/W
Squawker: Parc Audio DCU-F081PP, 83dB/W,1.3L
Woofer: SB Acoustics SB13PFC-4, 89dB/W
Network: 300Hz, 5kHz cross,12dB/oct
Since the name of the unit used was wrong, I will correct it.
Enclosure: Bass reflex, 23L
Tweeter Unit: Dyton AMT mini-8, 88dB/W
Squawker Unit: TangBand TBW3881SJF, 88dB/W, 1.3L
Woofer Unit: SB Acoustics SB13PFC-4, 89dB/W
Network Cross Over: 300Hz and 5kHz, 12dB/oct
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Old 10th December 2019, 07:13 AM   #3235
Profi is offline Profi  Russian Federation
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Join Date: Jun 2016
Location: Tyumen
My new works. 2-Way Beag401 in Onken + Autor FullRange 8"
IMG_20191208_174701.jpg
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Old 1st January 2020, 05:14 PM   #3236
pragmat is offline pragmat  Spain
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Join Date: Jan 2017
I made this system because my wife and my mother-in-law didn't want to have some fridge-sized speakers in the livingroom and i refuse to buy 2019-sourround-design-speakas.

I made this pair from an old pair of Pioneer speakers with damaged cabinets that i bought on the flea market.

I added a 4 inch woofer i found and made a hornreflexsystem for them with a Karlson-like wide mouth.

Most of my materials i get from the scrapyard like the wooden plates or crossoverstuff from old speakers.
Here i used a sheet of flexible mdf to make the two dancing ladies.
Finally i casted a traktrixhorn-shaped waveguide for the tweeter from plaster.

It is a lot of experimenting and measuring that way, but the sound ist clear and horn-like fast.

So i'm ok with the sound and the ladies like the design.

Happy new year and saludos de Espana
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Old 1st January 2020, 11:30 PM   #3237
djn is offline djn  United States
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Join Date: Oct 2004
Location: Albuquerque, New Mexico
Beautiful work!!! Do you have a link to the build?
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Old 2nd January 2020, 02:05 PM   #3238
MtBiker is offline MtBiker  United States
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Join Date: Jul 2002
Location: Northern Virginia
Very well executed and I think Gaudi would approve, but is there a reason for the Swiss cheese in the upper cabinet?
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Old 2nd January 2020, 03:49 PM   #3239
pragmat is offline pragmat  Spain
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Join Date: Jan 2017
Quote:
Originally Posted by djn View Post
Beautiful work!!! Do you have a link to the build?
I'm sorry, i just made some sketches and calculations on some sheets of paper, but they are lost by the times.

The waveguide was a leftover from some other tests with 1-Inch dome tweeters. I used it to level up the tweeter and to give it some more direcion and less echo in the room. The crossover seperates it from the speaker at the front at 3000Hz, 12dB, i think.
Both woofer work on the same, pretty big and damped enclosure with a mouth opening of about 40% membransurface. I had to widen up the mouth to place it with the opening to the floor so i checked if that karlsonstyle mouth extension would be a help (or if the ladies had to get a bigger booty).

The woofer in the back comes without crossover to give it a little mor virtual room, that's why i put the holes around it. It passes out at around 6000 Hz.
The upper part is connected with glue to the lower one with a ring of rubber.



@MtBiker
The cavities were a design feature, i attached a foto of the former use with some other speakers.
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File Type: jpg 20161126_094923.jpg (132.2 KB, 126 views)
File Type: jpg P1060296.JPG (307.8 KB, 161 views)
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Old 2nd January 2020, 11:50 PM   #3240
zman01 is offline zman01  Bangladesh
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Location: Dhaka
System Pictures & Description
pragmat,

Nice work, you have a unique set of speakers.
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