Donnie Mulligan

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@ahmadieb Ай бұрын

Ugly

@mathewgeorge9550 Ай бұрын

Great job. Inspiring. Is the PAM8406 based amp, really stereo?

@DonnieMulligan Ай бұрын

Yes, I confirmed it while testing connections. 5 watts stereo in 4ohms. About 2 watts in 8ohms. These Drok amps boards are nice. Has a Power On/off/ volume knob, no hiss at max volume. Very stable. Great little 5V amp board.

@OscarHernandez-ym4hx Ай бұрын

Love the sound. What speaker are you using for Mid/ highs on your bix? Thank you sir. Great Work

@DonnieMulligan Ай бұрын

Mark Audio CHN-40 www.markaudio.com/online_shop/ch/chn-40/

@indridcold4210 Ай бұрын

I've thought about building a similar design but with the HiVi B4N woofer for deeper bass. Low crossover point with this tweeter at the baffle step and with a baffle step of around 4db to put on stands. Thanks for this build! It's nice to hear the tweeter in action. The Tectonic tweeter is flat at about 79-80db on the Tectonic website response plot and yours looks like it's up around 84 or better though?

@DonnieMulligan Ай бұрын

I, too, have used the B4N before. Nice little woofer. Good Luck!

@DonnieMulligan Ай бұрын

I rolled the Tectonic BMR off around 1500Hz which I think helped raise the sensitivity up a few db. The main issue is to watch your wattage to them. They're rated only to 20 watt peaks.

@cotandiet6096 Ай бұрын

Thank you so much for sharing. Did you test for frequency response for the whole speakers? What lowest frequency can they go down to? 30Hz?

@DonnieMulligan Ай бұрын

I did not have test equipment when I built these so I don't have measurements. My best guess would be around 45-50Hz. In a later video I added a tweeter and got a much better response.

@OscarHernandez-ym4hx Ай бұрын

Could I find that type crossover off shelve ?? Love the sound. Thanks.

@DonnieMulligan Ай бұрын

They have several choices for 2-way crossovers at 1500Hz on ebay, aliexpress, and Temu. I don't use stock crossovers so good luck,

@TheCasualSirenEnthusiast 2 ай бұрын

🗿

@sc0or 2 ай бұрын

I apologize, but 86dB is not a "high sensitivity". That's a cleaning sponge but not a high sens driver -) You need to push 16W where a real high sens driver will be satisfied with 1W

@DonnieMulligan 2 ай бұрын

Measurements are not 1 watt at 1 meter, just at 1 meter. I did not have the equipment to set 1 watt. Just trying to get the frequency curve better. The real sensitivity is probably higher because of my amp settings. A little volume equated to loud SPL's.

@dakken74 2 ай бұрын

I know this is an older video,,but i had a question, after you finish the osb can you still feel the roughness of the grain.

@DonnieMulligan 2 ай бұрын

Yes definitely. I did spray several coats of clear lacquer to help seal them but you can still feel the OSB texture. I did another pair for my brother. Sanded the OSB down to a 120 grit. Got a much smoother finish. I think if you sand them well and use several coats of polyurethane you can get them smoothed out pretty well. Mitered corners were tricky. They are very delicate and flakey until you glue them up. Good Luck!

@dakken74 2 ай бұрын

@@DonnieMulligan thank you for the quick reply. Ever since I worked at home Depot in the lumber department, I've always liked to look of OSB, but never liked working with it because it did splinter and chip so much. Maybe I'll try a project with them in the future.

@DonnieMulligan 2 ай бұрын

@@dakken74 With mitered corners you don't have to deal with showing the end grain. The corners look great with this material and nearly disappear. You could also use the underside of OSB, at least on my 4 x 4 sheets, it has a different texture. Smaller wood chip with dark brown bark like pieces mixed in. Gives a slightly different look.

@adrianoamatucci989 2 ай бұрын

Musica vera. Complimenti da Roma.

@DonnieMulligan 2 ай бұрын

Thanks from the USA!

@joncasey3751 2 ай бұрын

Wow that is the best 6th order design I have ever seen I like how you almost t lined the ports bet that little 4 inch woofer boom

@DonnieMulligan 2 ай бұрын

Thanks! Definitely surprising performance out of a 4" driver. My only recommended change would be make the box 4 inches taller and go with 1/2 inch ports to eliminate some of the port chuffing.

@Vouwfiets9 2 ай бұрын

Very nice build sir! I'm planning on an OB with those GRS woofers but 2x15 inch per side, and a Lii Song Fast 8 widerange. Thanks for sharing this video!

@DonnieMulligan 2 ай бұрын

I hear the Lii Song's are nice. The GRS upper bass range is pretty strong. Crossing them over below 200Hz could help, even with the 15". I'm still planning on a total rebuild on the crossovers on mine. Maybe a 3-way/2.5 way approach. The tweaking continues.

@Vouwfiets9 2 ай бұрын

@@DonnieMulligan Yes I read your advice. I plan to crossover as low as possible. 200/250 Hz if the Lii Song's can manage. I'll keep an eye on your tweaking. My build will not be anywhere soon, should be a winter project. 🙂

@bestuurdvsgroningen3603 2 ай бұрын

Love how the lights turned up when you tapped the box

@DonnieMulligan 2 ай бұрын

Yep, I had to wire the Spectral Analyzer to it's own power source with a switch in the back. So it's on with or without a signal.

@AugustusCardoso 2 ай бұрын

Incredible! Thank you for this video, I learned a lot

@miguelmunoz1713 3 ай бұрын

I got the NX-Treme imagine how that sounds

@abdulhadihamidon15 3 ай бұрын

Thank you sir for reviewing this. Im currently searching cheap amp just for my room 2.1 paired with 1 passive sub.

@DonnieMulligan 3 ай бұрын

You need a powered sub. The .1 channel is not amped in the A01 Pro.

@danrussell9357 3 ай бұрын

Do you think a tube amp would fix the hot high end?

@DonnieMulligan 3 ай бұрын

I think a tube amp could drive them. They do have high sensitivity. A more realistic fix is a complete crossover redo. I'll try a 2.5 way or 3 way and hopefully dial thinks in better. The tweaking continues.

@danrussell9357 3 ай бұрын

Thanks for the video. I like the time you spend on the graphs.

@NackDSP 3 ай бұрын

The 2TD-X were OK . the other two speakers were just not very good and lacked bass.

@DonnieMulligan 4 ай бұрын

A little follow up to answer some questions. I am using these in a 2.1 channel system with a small sub and they blend quite well. The Tectonic BMR tweeter is surprisingly good in this setup. The wide dispersion pattern and thin baffles makes these small books shelfs sound larger than they are. The only issue with the tweeter is its low sensitivity(80db) and power handling (10watts rms). I think this imbalance in sensitivity between the drivers(5db) is why I did not need a baffle step circuit in this design. Just be careful how much signal and wattage you send through this tweeter.

@OscarHernandez-ym4hx Ай бұрын

Do you think 15 watt could damage BMR ?

@DonnieMulligan Ай бұрын

@OscarHernandez-ym4hx It's max output is rated at 20 watts so it should be fine. If you cross it over high enough, like 1500Hz+, it should function like any other tweeter in its' price range.

@rickn9836 4 ай бұрын

I like em!

@danieljones8587 4 ай бұрын

My honest opinion, all three speakers sounded good with just slight differences. Listening with closed eyes I would have to give the edge to the X-CS, to me it had a bigger sound. Thanks for your time and video!

@lorenawilderman 4 ай бұрын

*PromoSM* 🙄

@The340king 4 ай бұрын

The XLS-CS are the best combination of tone and articulation when replayed on my system. Thanks for sharing.

@hitchpaprocki2649 4 ай бұрын

My speakers sound better just by listening to this. That's a lot ang nice build. I have the 2ways.

@DonnieMulligan 4 ай бұрын

You don't get the whole picture from a video demo like this. It's just a snapshot of how they sound with copyright free music. They probably can compete with $4000-$5000 towers.

@BostonMike68 4 ай бұрын

I use.75 MDF with acoustical damping adhesive and adhere .75 solid oak and some and hard maple on others and one I used the oak on the side and a hard maple baffle and top . I also make the tops and bottoms 3" thick . But they are big speakers with big drivers so I want them to be dead without vibration.

@DonnieMulligan 4 ай бұрын

I, too, have used 3/4" MDF, plywood, and 1" Oak on my towers. Good Stuff.

@BostonMike68 4 ай бұрын

@@DonnieMulligan that's awesome. It's good to experiment with different material. I have used reclaimed hard maple from an old record player stand I found on the side of the road. All my other speakers are MDF flooring adhesive and hardwood flooring. Because I get it at work for free. But it's a pain in the ass . The adhesive is messy gets on my tools . I have to sand the original finish off the hardwood and refinish it. It would be much easier to just use birch or MDF and I actually did painted it and everything and when I listened to it it sounded good but not like my other ones so I covered it with oak and in the sides and curly maple on the baffle and it sounds so much better and looks awesome. I love building speakers. Keep up the good work 👍

@tomconnell7154 5 ай бұрын

how is the OFF axis on this, considering it for a center channel for home theater and would like to know if the way off axis on this is good or bad for wide seat placement

@DonnieMulligan 5 ай бұрын

I have not taken off axis measures for it. It sounds great on axis and probably 10 degrees left or right. That's as far as I can go on our loveseat. I did post some music demos of it in its vertical position. It's got a lot of punch.

@DonnieMulligan 5 ай бұрын

kzfaq.info/get/bejne/o5mhmLJe07m5nYU.htmlsi=R7IxXQfpGeubCfmS

@buzzcrushtrendkill 5 ай бұрын

Nice build. And a great workshop you have. I'd say the PE Solstice tower kits are worth checking out, an amazing value.

@annihilationindustries1990 5 ай бұрын

kzfaq.info/get/bejne/qbeWiNSgysWyd5c.htmlsi=VZ7SxmpONcJcEtPV

@DodgyBrothersEngineering 5 ай бұрын

Nice result, but people have a tendency to make the ports way more complicated than they need to be. Folding back and forth is not the easy or efficient way to do it.

@DonnieMulligan 5 ай бұрын

Definitely not easy, but it is a very efficient use of space. The whole cabinet is only .55 cubic feet.

@DodgyBrothersEngineering 5 ай бұрын

@@DonnieMulligan just for shits and giggles I redrew your cabinet to the exact dimensions you show / mention in the video. You can keep the exact same external dimensions without weaving the port back and forth. I have seen people weave like that plenty of times before, but it is totally unnecessary. If you like I can send you a picture showing the easy way to do it.

@DonnieMulligan 5 ай бұрын

No thanks, I'm good. I'm moving on to new projects.

@DodgyBrothersEngineering 5 ай бұрын

@@DonnieMulligan what's planned for your next build? I've been working on some final designs for my upcoming speaker projects. Got some real out of the box projects in mind.

@Grommet2007 5 ай бұрын

Nice build! Did you confirm the resonance frequencies and overall frequency response were a match for what WinISD predicted?

@DonnieMulligan 5 ай бұрын

I could only do an In-room response with R.E.W. since my test equipment is anchored to a desktop. Knowing that most in room measurements below 200Hz are problematic, I only did a few nearfield measurements at 12 inches from the top port. Pretty flat response from 42Hz-95Hz with nice roll offs on both ends. 95Hz was a little higher than the modeled 80Hz. I must be a little lean on cubic volume in the rear chamber.

@Grommet2007 5 ай бұрын

@@DonnieMulligan As both vents are the same size, another way to accurately measure the response would be to close-mike each vent (less than 2cm) and just add the response in REW. You should check the actual resonance frequencies with DATS or something similar. The resonance frequencies will be at the valleys in the impedance curve.

@DonnieMulligan 5 ай бұрын

@@Grommet2007I did that as well. It near the end of my video. I don't own DATS yet. Future purchase.

@Elnufo 5 ай бұрын

Thats a real nice project with a great outcome, well done! 😊

@itech1129 5 ай бұрын

I wish i had the skills to make these, I'm trying to find one for my Mini Cooper using a 6.5 Subwoofer.

@DonnieMulligan 5 ай бұрын

Check out Crutchfield.com. They can help you fit a small sub into any vehicle.

@larrymontgomery4902 5 ай бұрын

I really like that bro i actually made a 4th order with an 8 in driver and it did what it was supposed to do but it didnt accommodate music as i would have liked but it was fun ( mine did NOT look near that good)...

@DonnieMulligan 5 ай бұрын

Thanks! Tough little cabinet to build. Surprising bass from a 4" woofer.

@AudioNaut93 5 ай бұрын

That’s a beautiful pair of speakers you’ve built there Donnie. Do you think there is a noticeable sonic difference between using the MDF that CSS supplies in the kit and using Baltic bitch plywood and solid wood like you’ve done or is just a cosmetic thing?

@DonnieMulligan 5 ай бұрын

Thank You! Negligible, as long as you brace the cabinet well. The 4 braces in each tower help raise up any cabinet resonances to an inaudible range. I would not recommend real wood for the sides or back panels. Expansion/contraction could be an issue.

@AudioNaut93 5 ай бұрын

@@DonnieMulligan thanks for the feedback Donnie! Do you think the DIY kits from CSS come absolutely ready for assembly or do they still require some work? I’m interetested in a DIY kit but I don’t have any carpentry tools. I’m aware that I’ll have to pay someone to do the veneers but I would like to do everything else myself so what’s your opinion? Should I go DIY KIT, or just buy a finished speaker from CSS? Like I mentioned I don’t mind doing the work but it needs to be ready for assembly with no additional planing, ripping, routing, or drilling cause I simply don’t have the equipment. Thanks!

@DonnieMulligan 5 ай бұрын

CSS Audio kits are great! Very good plans and all accessories included. You can read/download the plans and assembly instructions before you purchase from their website. Just click on the "Data" tab under the speaker kit you are interested in. Main things needed for assembly are: soldering iron, wood glue, and clamps. If this is your first kit, try a bookshelf size kit first. If not, the towers require a lot more clamps$$$ and maybe a buddy to help.

@jacktough 5 ай бұрын

Very handsome T.o.a.Hs! What frequency did you choose to roll off between the woofers & planar?

@DonnieMulligan 5 ай бұрын

500Hz

@jacktough 5 ай бұрын

@@DonnieMulligan Awesome. And the planar doesn't complain too much about playing that low? 😊

@DonnieMulligan 5 ай бұрын

The planars handle it well. The GRS drivers don't sound great playing that high. I wish I could have crossed them closer to 200Hz. Thinking about turning them into a 2.5 way system to help smooth out the midrange.

@jacktough 5 ай бұрын

@@DonnieMulligan Thanks for the insights 😊

@rickn9836 4 ай бұрын

@@DonnieMulligan I would substitute one of the following for the satellite: FaitalPRO 3FE22, GR Research LGK, or Tang Band W4-1879. Much easier to integrate with the woofers, all work well open baffle, and you can crossover as low as you want (down to 100 if desired, though I would do it between 200 and 350)

@jvburnes 5 ай бұрын

Wow, really impressive midrange and a bit of air.

@DonnieMulligan 5 ай бұрын

This is an amazing tower speaker kit. This is still my favorite kit.

@DGinNC 5 ай бұрын

As somebody that's been working in the audio industry for over 25 years (granted car audio industry). I'm very skeptical of this open baffle speaker setup. My skepticism was actually made greater by the fact that an "audio demo" was created to add to a KZfaq video, to listen to through whatever one is watching and listening to KZfaq on. I mean call me crazy, but even if I'm listening to this on the highest end headphones one could purchase it's still not going to pick up the nuance of a high-end audio system that someone played on and recorded, then converted and uploaded in the format of a KZfaq video, then played on whatever media device I was using. If I'm missing something, please let me know, I'm always willing to learn about something I haven't considered. I'm sure your speakers sound wonderful, and there's always great pride taken in designing and building something yourself. But we seem to be ignoring the degradation of audio quality from the playing recording, formatting, uploading, and streaming, and payback stream, process that goes on from your listening area, to my headphones. Like a whole lot of degradation. Unless I'm misinformed or have missed something.

@DonnieMulligan 5 ай бұрын

You are 100% correct. One should not put a lot of focus or weight on youtube music demos(Any of them). Especially when dealing with open-baffle speakers where room interaction is a big part of the appeal. I just include the demos to give you a small taste of what they sound like in my space, nothing more. And for a $120 I got some decent results for my first attempt at open baffle speakers. As I stated in the video, they do need major EQ and a subwoofer. I have since tweaked them some more, but I think to take them to the next level will require an upgraded driver and a additional mid-bass woofer on the baffle. Maybe for another day.

@mikeutube7888 5 ай бұрын

Nice!

@professionaloverthinker-x 6 ай бұрын

No subwoofer used??

@DonnieMulligan 6 ай бұрын

Not for the music demos. They have good bass response for their size. I now use them as nearfield monitors with a sub. It's a very neutral and well-balanced speaker.

@professionaloverthinker-x 6 ай бұрын

@@DonnieMulligan outstanding work, bass soo good i thought there's sub nearby"

@DonnieMulligan 6 ай бұрын

Intermodulation distortion vs. Doppler Effect distortion are two descriptors of possibly what I was experiencing on both versions of the Spartans without a tweeter. Andrew Jones leaned towards intermodulation distortion because it's more common. I don't have the test equipment nor knowledge base to diagnose it more effectively, but I do know that using a 2-way design with a tweeter crossed over low definitely helps. More tweaks and projects ahead.

@prenticetyndall 7 ай бұрын

Great work! I'm gonna attempt some "cube" studio monitor clones next month. Similar design to these, but much smaller boxes and sealed. It should be interesting.

@janulik9535 7 ай бұрын

hi , thx for the review, which one would you choose for lov level 65 db listening?

@DonnieMulligan 7 ай бұрын

I you are on a tight budget go with the GR Research X-LS tower. If not, the CSS Audio 2TD-X are fantastic.

@janulik9535 7 ай бұрын

@@DonnieMulligan thank you, sure? I thought that quite listening can be problem with css, I can afford them an even better bevause of easier built, I have seen revie where was sad that css taiphoons are not good for low levels at about 65 db, late night, however typhon is even bigger. I am interested in 1 tdx, for me I think it will be absolutely enaugh. Thanks again

@DonnieMulligan 7 ай бұрын

When comparing these the X-LS seemed to be the most efficient. I had to keep turning the volume down to balance with the other two speakers. It's sensitivity is lower than the others ones but it did not perform that way. It should be good for low level listening too.

@DonnieMulligan 7 ай бұрын

Couple more points that I omitted: I did not mention the Bluetooth 5.0 functionality in this video but it does work. My cell easily linked up(Bluetooth name is “JX-BT”) and played well even 10-20 feet away. I don’t usually listen to music via Bluetooth unless it uses one of the better codecs like: Apt-X HD or LDAC. Spectrum Analyzer was the term I was fumbling with. The Media Player has a 3 segment led display for each channel that dances to the source input.

@carlosmacmartin4205 7 ай бұрын

Cool project 😎 Thanks for sharing!

@michaela.6698 7 ай бұрын

Nice Donnie! They sound great! A lot cheaper than building the NX-Oticas. I’m looking into building some open baffles from scratch. My Encores are still going strong.

@DonnieMulligan 7 ай бұрын

Thanks. I've done a few more open baffle sets with my last set sounding quite nice. Have been working and enjoying small desktop builds lately. Have fun out there.

@laurenciofranco3645 8 ай бұрын

Hello, your video helps a lot.. I would you like to have some more info regarding where can I order the speakers? What kind of brand, model? Tweeter? Or if needs a internal cross over? Things like that. Hopefully you ven suggest me something. Thank you for your help in advance. Lawrence

@DonnieMulligan 7 ай бұрын

All the plans and parts list are in the video description.

@DonnieMulligan 8 ай бұрын

After checking my R.E.W. measurements, I noticed (and a few other online folks) that the scale was set on default of 100db. After adjusting the scale, the Spartans measured roughly +/- 8db from 58Hz to 13k. Still not bad for $60 in parts and wood. The bass is surprising from these little guys. I am finishing up on their bigger brother "The Spartan 2.0" and hopefully will post soon. More Woofer, More Power, More Fun!

@gregooify 8 ай бұрын

😀THAKS

@psyphonyxaudio 8 ай бұрын

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