Small desk monitor speaker, design & build - AVS Forum
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post #1 of 19 Old 04-25-2014, 02:40 PM - Thread Starter
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I had ordered some different midranges and tweeters a while back when they were going for cheap, so I decided to build a 2-way cabinet with leftover 3/4" mdf for them using the Dayton ND-140 and the Dayton DC28FS-8 1-1/8" Silk dome tweeter, shielded....
Both will be mounted from the rear of the baffle, I will ise the tweeter without it's original faceplate...

Here are some pics.
(The design is inspired by the PreSonus Eris)

Slabs of mdf cut to size


cutting tweeter hole


cutting mid hole


fitting the nd140


roundover with router (speaker drivers mounted from inside)


quick sand


I also rounded the sides only, like it ?
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post #2 of 19 Old 04-25-2014, 02:48 PM - Thread Starter
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also, I got some inspiration from these pics, forgot where I got them from, but credits to their owner !!
don't you just love the look of those rear-mounted drivers ??



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post #3 of 19 Old 04-25-2014, 09:50 PM - Thread Starter
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I had the inside of the baffle routed, otherwise the drivers would sit too far in... the mdf is about 20mm thick....

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post #4 of 19 Old 04-26-2014, 05:13 AM
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They look nice! Did you design the crossover yourself? Where did you cross that woofer & tweeter? Are you concerned about the possibility that by mounting the drivers behind the baffle, you might be messing with the frequency response due to the sound waves defracting off the front baffle in that configuration?
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post #5 of 19 Old 04-26-2014, 05:18 PM - Thread Starter
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Quote:
Originally Posted by Martycool007 View Post

They look nice! Did you design the crossover yourself? Where did you cross that woofer & tweeter? Are you concerned about the possibility that by mounting the drivers behind the baffle, you might be messing with the frequency response due to the sound waves defracting off the front baffle in that configuration?

no xover yet, I will just get the assembled ones from PE. all these drivers are 8 ohms.

not concerned about any defraction, if there will be, I will deal with that biggrin.gif no turning back at this point... hehe

here's a similar speaker sold on PE with the same mounting method...
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post #6 of 19 Old 04-26-2014, 05:21 PM - Thread Starter
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cabinet panels ready to get cut:


all boards cut:


dry fit, no glue or nails yet...


nailed it !!


both glued and nailed
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post #7 of 19 Old 04-27-2014, 06:25 AM
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If you are going to all of the effort & expense of building these nice looking speakers, then I would highly recommend that you take the time to measure, and build the proper crossovers for these drivers in this cabinet. You will never get them to sound good with an off the shelf crossover. That's just not how to do this sort of thing.
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post #8 of 19 Old 06-06-2014, 09:47 PM - Thread Starter
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Quote:
Originally Posted by Martycool007 View Post

If you are going to all of the effort & expense of building these nice looking speakers, then I would highly recommend that you take the time to measure, and build the proper crossovers for these drivers in this cabinet. You will never get them to sound good with an off the shelf crossover. That's just not how to do this sort of thing.

 

I cannot disagree, a custom made crossover would sound best.

For now, I got this: https://www.parts-express.com/dayton-audio-xo2w-25k-2-way-speaker-crossover-2500-hz--260-142

From reviews from previous buyers, this is highly rated for it's price.

 

I got the drivers going into these cabs for under $20 each...

I could not justify getting a crossover 2x or 3x the price of the drivers.

 

Just hoping the reviewers are not all wrong about this.

However, if down the road I am not satisfied with the sound, the crossover will be the first to go.

 

Given the above driver-models, do you have any recommendations for crossover point, slopes, components, etc... ?

If I know what to get, I know what this will cost me down the road.

I am no pro in this field, I can use any help I can get.

 

Thanks for your feedback ! :-)

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post #9 of 19 Old 06-06-2014, 09:52 PM - Thread Starter
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glueing the baffle...


filling the holes made by the nailgun
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post #10 of 19 Old 06-06-2014, 09:55 PM - Thread Starter
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ready for sanding !

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post #11 of 19 Old 06-06-2014, 10:01 PM
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Little PC speakers next time you could use 5/8" MDF and just glue. No filling needed. I would stick to designs out their. Can get good ones for cheap for that size. Little to no chance that throwing parts together will sound any better then 20 buck PC speakers at best buy.
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post #12 of 19 Old 06-06-2014, 10:08 PM - Thread Starter
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Quote:
Originally Posted by chalugadp View Post

Little PC speakers next time you could use 5/8" MDF and just glue. No filling needed. I would stick to designs out their. Can get good ones for cheap for that size. Little to no chance that throwing parts together will sound any better then 20 buck PC speakers at best buy.
This was leftover mdf from a 18" sub buikd, hehe...
we use nails just for the wood to dry, we don't have or use clamps. Drivers were bought very inexpensive from PE, so why not... 😁
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post #13 of 19 Old 06-06-2014, 10:12 PM
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I hear ya
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post #14 of 19 Old 06-10-2014, 02:54 PM - Thread Starter
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prepping to sand outside....



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post #15 of 19 Old 06-10-2014, 02:55 PM - Thread Starter
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I'm very satisfied with the results :-)
while sanding, I decided to fill some seems up also. very smooth now !

now to have it painted, will leave that up to a local artist.....

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post #16 of 19 Old 06-12-2014, 01:00 AM - Thread Starter
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almost done !!

Had this done by a local artist

edit: I have attached a file, this is the new vB-forum...
can you see the attachment ? (cuz I do not !)
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post #17 of 19 Old 06-12-2014, 06:05 AM
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Quote:
Originally Posted by Bombelman View Post
almost done !!

Had this done by a local artist

edit: I have attached a file, this is the new vB-forum...
can you see the attachment ? (cuz I do not !)


Holly smokes! Those are the most "interesting" looking speakers that I have ever seen! Nothing wrong with that, though!
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post #18 of 19 Old 06-12-2014, 09:36 PM - Thread Starter
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post #19 of 19 Old 06-15-2014, 12:12 AM
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Thumbs up

I am in love with that paint job.

I'm planning on going a similar route when I DIY some speakers - have a local artist make them special. This just reinforces that plan.
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