Insane Halfinator with DSP, bluetooth and lithium |
Post Reply | Page 12> |
Author | |
lutkeveld
Young Croc Joined: 23 September 2013 Location: The Netherlands Status: Offline Points: 517 |
Post Options
Thanks(1)
Posted: 15 July 2018 at 4:57pm |
The last few months my roommate and I have been planning on building the ultimate outdoor speaker. We went with the Halfinator design by Saturnus, but went all out with the electronics. This includes:
-Digital Signal Processor -High power class-D amplifier -The premium tweeters (PHT407N) -High power 18.5V lithium battery -Long range V4.2 Bluetooth -3D printed input panel -Swappable battery -Birch plywood construction with routed slots for easy and strong construction -All black tuffcab finish with a crazy color custom aluminium grill with foam insert. Now that I write it out, I realize how insane this build really is. We are quite far in the process, but not finished. The build log will be posted bit by bit, so stay tuned.
|
|
lutkeveld
Young Croc Joined: 23 September 2013 Location: The Netherlands Status: Offline Points: 517 |
Post Options
Thanks(0)
|
Begin construction: wood is cut and first slots are routed Festool making the job easy First few panels done Halfway there Testfit woofer Next up: routing, drilling and assembly |
|
lutkeveld
Young Croc Joined: 23 September 2013 Location: The Netherlands Status: Offline Points: 517 |
Post Options
Thanks(0)
|
|
|
spongebob
Young Croc Joined: 20 October 2010 Status: Offline Points: 1395 |
Post Options
Thanks(0)
|
Oooft, not alot of space for the magnet vent Edited by spongebob - 17 July 2018 at 11:29am |
|
lutkeveld
Young Croc Joined: 23 September 2013 Location: The Netherlands Status: Offline Points: 517 |
Post Options
Thanks(0)
|
No space at all, but that is by design. They are glued with epoxy to the centre brace for structrural integrity. Covering the vent will decrease the power handling slightly, but I am not even close to challenging the limits of the drivers.
|
|
spongebob
Young Croc Joined: 20 October 2010 Status: Offline Points: 1395 |
Post Options
Thanks(0)
|
To ask a stupid question.. Would blocking the magnet vent not significantly change the T/S of the driver?
|
|
Saturnus
Old Croc Joined: 13 July 2010 Location: Copenhagen Status: Offline Points: 2025 |
Post Options
Thanks(1)
|
No. The potential change can be roughly calculated by comparing the SD to the vent area. In this case about 50/34000mm2. So less than 0.15% potential change. When you consider that manufacturing variations often is 5%-10%, or even more for woofers it's totally irrelevant. The main function of a vent is to increase power handling of a woofer by a few % but as the amplifier used in this build is well below the power handling of the woofer by a factor of more than two, even that is completely irrelevant. Note: comparing SD to vent area is a rough estimate but gives a good indication of the upper limit of the potential change. There is a way to calculate the potential change accurately but for a very small vent size like on the HP10W there's really no point. The change, if any, will be miniscule.
Edited by Saturnus - 17 July 2018 at 2:08pm |
|
spongebob
Young Croc Joined: 20 October 2010 Status: Offline Points: 1395 |
Post Options
Thanks(0)
|
Thanks for the info!
|
|
Jebimasta
Registered User Joined: 08 August 2011 Location: Swansea Status: Offline Points: 146 |
Post Options
Thanks(0)
|
Looks cool!
I keep coming back to this forum even though I haven't built or posted in a long time, always very interesting to see what's going on. I'm building a bluetooth speaker myself at the moment, also almost done. I thought I was building a beast and trust this place to have people building more mad things! mine's cute by comparison. (post coming soon) I'll have to look at the halfinator design to see what you're aiming for.
|
|
lutkeveld
Young Croc Joined: 23 September 2013 Location: The Netherlands Status: Offline Points: 517 |
Post Options
Thanks(0)
|
Input panel in place, without all connectors:
Finished product: Finished product: The PCB still needs some minor work, but overall the performance is amazing and it has lasted 2 weeks (!) with daily use.
Edited by lutkeveld - 10 October 2018 at 12:05pm |
|
dextrr
Registered User Joined: 12 May 2015 Status: Offline Points: 17 |
Post Options
Thanks(0)
|
Looks really rugged. I like! For me personally the size of even a Halfinator is just a bit too much. What kind of protection mesh is that?
|
|
TheORig
Registered User Joined: 18 June 2018 Location: Bristol, UK Status: Offline Points: 30 |
Post Options
Thanks(1)
|
Hi, looks like an amazing speaker. Really interested in finding out a little bit more about the build. My friends and I are planning to construct something similar. Will you be posting a video test at all?
Thanks
|
|
Post Reply | Page 12> |
Tweet |
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |