ALRB87 (ACTIVE LINKWITZ RILEY BOOKSHELVES)

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ONB

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HI Guys
I am from mumbai and have been dabbling in speaker design for the past couple of years. My latest design is an Ported Active bookshelves with 24db linkwitz riley crossover with active bsc & tweeter time alignment . The speakers are powered with 40W+15W X 2 individual amps inside in the custom made plate amp powered with a 200VA low noise linear power supply . the best being these small bookshelves can achieve an incredible 108db/1m .
The mibbass drivers are crossed over at 2800hz and tweeters take on from there and on the lower end it does impressive 55Hz at -3db and 50hz at -10db.

How do you guys like it any comments would be welcome.

Regards
ONB

IMG_20180823_215901.JPGIMG_20180823_215952.JPGIMG_20180823_220040.JPGIMG_20180823_220129.JPGIMG_20180823_222745.JPG
 
Hi

Firstly welcome to HFV.

I love the looks, design and waiting to hear them. Neat finishing.

Have you posted any YouTube video on their playback?

Whats the specs of the drivers used and brand?

Are you planning to make more and sell? Do they come in Black color?

Do you have any other designs? I am sure there would be members looking up for custom made speakers in a reasonable budget.
 
They look as good as any branded speakers, fit and finish is top class(Audioengine anyone?) . Aptly you've branded them as well!
Congratulations...

ONB said:
the best being these small bookshelves can achieve an incredible 108db/1m .
Click to expand...
That's pretty impressive.

ONB said:
The mibbass drivers are crossed over at 2800hz and tweeters
Click to expand...
It'd be great if you could share the details of drivers and other electronics.
 
Very good fit and finish. I am sure they must sound excellent as well.
Please share details of the drivers and materials and electronics used in the build.

Some pictures of the WIP would also be great.

Could motivate a number of DIY enthusiasts in the forum
 
Hi ONB...
Welcome to the forum !!!
The question how do you guys like it is unnecessary:) Ofcourse they look awesome !!!

In this section there are many diy guys, and we are all curious to know the drivers you used. Ofcourse, unless you want to keep it confidential :D:D
 
Are those Iwai drivers...?

Looks similar

1.jpg


1.jpg
 
If those are Iwai 5.25" with Aluminum former, that's a great coincidence. Two days back i placed order for 4 pieces of the same. :D:D:D:D
So they are going to work good then ;)
 
efernand1 said:
Hi

Firstly welcome to HFV.

I love the looks, design and waiting to hear them. Neat finishing.

Have you posted any YouTube video on their playback?

Whats the specs of the drivers used and brand?

Are you planning to make more and sell? Do they come in Black color?

Do you have any other designs? I am sure there would be members looking up for custom made speakers in a reasonable budget.
Click to expand...
Hi efernand1,
I am planning on a video and regarding black colour, yes definitely they do come in black that's my favourite colour for speakers...white colour was done on special request..

I have other designs some are in making...will update

mpw said:
Is it necessary for the crossover to be high at 2800 hz ?
Click to expand...
Yes , any lower will cause it sound harsh , as selected tweeters fs is not very low..
 
Last edited by a moderator:
Simple, decent looking.:) only tiny suggestion is the grill frames could have rounded inside cuts which would have looked more harmonious to the rest of the design. Can't comment on sound unless heard;)
 
Welcome to the forum. Speakers look good. Started your entry with a bang is see.;). Like other's mentioned, some more details and what would be a round about cost for making such a speaker. Thanks
 
tuff said:
Welcome to the forum. Speakers look good. Started your entry with a bang is see.;). Like other's mentioned, some more details and what would be a round about cost for making such a speaker. Thanks
Click to expand...

I have sent you details separately, please feel free to reach out if you need any more info...

regards
ONB
 
ONB said:
HI Guys
I am from mumbai and have been dabbling in speaker design for the past couple of years. My latest design is an Ported Active bookshelves with 24db linkwitz riley crossover with active bsc & tweeter time alignment . The speakers are powered with 40W+15W X 2 individual amps inside in the custom made plate amp powered with a 200VA low noise linear power supply . the best being these small bookshelves can achieve an incredible 108db/1m .
The mibbass drivers are crossed over at 2800hz and tweeters take on from there and on the lower end it does impressive 55Hz at -3db and 50hz at -10db.

How do you guys like it any comments would be welcome.

Regards
ONB

View attachment 29727View attachment 29728View attachment 29729View attachment 29730View attachment 29731
Click to expand...
Fabulous work ONB. Reminds me of an 'Audioengine' pair I have. The 108dB / 55|50hz spec is a WOW !
 
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