The Boominator - another stab at the ultimate party machine - Page 188

Saturnus · 20th June 2011, 07:59 AM

Quote:

Originally Posted by Kostecki

I'm sorry for "double-posting" but i can't just let my question drown since i really need some clarity on this

What material is it? Those driver look like the suspension is made of some kind of synthetic rubber. In that case head to your local hardware store and ask how to repair it but you might get away with just using a small strip of extra strong duct tape. Or regular duct tape and one component contact glue.

Boissez · 11:34 AM

Hello everybody, first time poster here.

I've been reading back and forth in this thread (and around the webs) but I have a hard time gauging what kind of battery life to expect from different battery solutions.

What I wan't to build is an 'airline-friendly' setup (must fit in overhead compartment, max 5-6 kg). It's somewhat more classic than the boominators here but I'm looking for a setup that can double-duty as a real audio player when travelling - so stereo is a must.
Here are the components I'm considering so far:

- Hifimediy T1 or T2 (TK2050) - (not sure which to get

)
- 22.2V LiPo Battery (ca. 4000 mAh) + balanced charger
- 2*JBL control 1Xtreme monitors (have those already) 8 Ohm, ~90db

My (totally unqualified) guesstimation is that I can count on about 2-3 hours battery @max and 20-30 hours @ more conversational levels.

Question is now... Am I completely wrong? And what would you suggest I do differently to optimize battery life?

PS: I apologize in advance if this is the wrong place to post this. I simply figured that people in this thread would have a great deal of experience with class D's + batteries.

Saturnus · 20th June 2011, 12:25 PM

Quote:

Originally Posted by Boissez

My (totally unqualified) guesstimation is that I can count on about 2-3 hours battery @max and 20-30 hours @ more conversational levels.

That's slightly optimistic. 2 hours @max should be doable but only 10-12 hours @ very low volume.

I'd advice to get much more sensitive speakers though as those you have will probably mean you use way too much power by needing to turn it up higher.

Boissez · 20th June 2011, 01:29 PM

Quote:

Originally Posted by Saturnus

I'd advice to get much more sensitive speakers though as those you have will probably mean you use way too much power by needing to turn it up higher.

I was fearing somebody would say that... But thank you for confirming my fear

Problem is that tiny efficient speakers are few and expensive - not something I'd travel with. Frankly, I haven't found any other speaker that really beats these in terms of efficiency vs size/weight (they are only 2.35 kg each and 23x15x14cm).

It does trigger another question though: would using a smaller amp help? I know these are supposed to be ~90% efficient - but does efficiency drop noticably when it plays at say 10% volume?

Otherwise I guess that I'll just have to tone down expectations and try to fit a larger battery to the amp.

Wubbaz · 20th June 2011, 01:45 PM

Sorry for asking this again, but I am in doubt of how I should make the central connection point.. just take all plus wires to a buttsplice and then take all the minus wires and then into a buttsplice? Red is plus, blue is minus

Thanks!

Saturnus · 20th June 2011, 01:52 PM

Correct. Except for the small change. Note the connection on the batteries.

Wubbaz · 20th June 2011, 05:15 PM

Quote:

Originally Posted by Saturnus

Correct. Except for the small change. Note the connection on the batteries.

Cheers, Saturnus! Just need to fit the HP-10W's and the electronics, then I'm finished.. won't be able to paint it before Roskilde

But thanks alot for all the help you have been! Really appreciated

donnib · 08:01 PM

Phaedras · 20th June 2011, 10:57 PM

Quote:

Originally Posted by donnib

(...)

Wow, thats a lot of links gathered, good job

I notice you also added a link to my cabinet blog entry - i'm glad its helpful

Phaedras · 20th June 2011, 11:28 PM

I would like to remind people of the Boominator Meet-Up @ Roskilde Festival. Its Tuesday the 28th of June, at Agora G @ 15:00 (3pm)

Meet-up!

Also, go check out the Boominator facebook page for pictures and stuff

Boominator Facebook

20th June 2011, 11:14 AM	#1872
Boissez diyAudio Member Join Date: Jun 2011 Location: CPH	Battery musings... Hello everybody, first time poster here. I've been reading back and forth in this thread (and around the webs) but I have a hard time gauging what kind of battery life to expect from different battery solutions. What I wan't to build is an 'airline-friendly' setup (must fit in overhead compartment, max 5-6 kg). It's somewhat more classic than the boominators here but I'm looking for a setup that can double-duty as a real audio player when travelling - so stereo is a must. Here are the components I'm considering so far: - Hifimediy T1 or T2 (TK2050) - (not sure which to get ) - 22.2V LiPo Battery (ca. 4000 mAh) + balanced charger - 2JBL control 1Xtreme monitors (have those already) 8 Ohm, ~90db My (totally unqualified) guesstimation is that I can count on about 2-3 hours battery @max and 20-30 hours @ more conversational levels. Question is now... Am I completely wrong? And what would you suggest I do differently to optimize battery life? PS: I apologize in advance if this is the wrong place to post this. I simply figured that people in this thread would have a great deal of experience with class D's + batteries. Last edited by Boissez; 20th June 2011 at 11:34 AM.*

20th June 2011, 07:51 PM	#1878
donnib diyAudio Member Join Date: Jun 2011 Location: Copenhagen	Maybe this could help new people doing this Hi, I have read this thread many times and other threads about Boominator and i have gathered a list of important/interesting posts, parts etc for the Boominator project. I cannot say that i am ready to my Boominator yet although i have ordered parts i still have allot of unanswered questions about the case which is the thing that gives me the biggest headache since there is no exactly design of it with size (i want to build the same design as Saturnus made with some minor modifications). I'll get back with question about this in another post. Parts Grill https://elextra.dk/main.aspx?page=article&artno=H19318 Enclosure for amp6basic Velleman nv Sunpanel Accubescherming op Zonne-energie 15W - Accu beveiliging & onderhoud - Conrad Electronic FRYS.com\|SUNFORCE Glue for panels http://www.tec7.dk/produkt-sortiment...ter/tec-7.aspx Fuse for amp6basic https://www.elextra.dk/main.aspx?pag...e&artno=H15563 Good links to parts (2009) The Boominator - another stab at the ultimate party machine Good list of parts needed by Saturnus The Boominator - another stab at the ultimate party machine Tools Router (fræser) https://elextra.dk/main.aspx?page=article&artno=H22748 Interesting and important discussions + useful information Explanation on Solar Power Rating Solar panel power rating *Discussion on power consumption* The Boominator - another stab at the ultimate party machine Solar panel power rating Port size and top The Boominator - another stab at the ultimate party machine Information on brace The Boominator - another stab at the ultimate party machine The Boominator - another stab at the ultimate party machine Why use the resistor The Boominator - another stab at the ultimate party machine Effect of the resistor The Boominator - another stab at the ultimate party machine How to calculate the right resistor for your boominator The Boominator - another stab at the ultimate party machine Diagram of piezo/driver and resistor The Boominator - another stab at the ultimate party machine The Boominator - another stab at the ultimate party machine Tip for piezos The Boominator - another stab at the ultimate party machine Why magnet-to-magnet construction The Boominator - another stab at the ultimate party machine The Boominator - another stab at the ultimate party machine *More on resistor, magnet-to-magnet etc* The Boominator - another stab at the ultimate party machine Information about the case The Boominator - another stab at the ultimate party machine Why amorphous solar panel ? Battery powered amp *How to create the cabinet and making an nice finish (Danish)* Sådan samler du et kabinet ordentligt og laver et pænt finish \| Roskilde-Open Size on the box The Boominator - another stab at the ultimate party machine The Boominator - another stab at the ultimate party machine The Boominator - another stab at the ultimate party machine Cutting instructions by an user http://www.diyaudio.com/forums/attac...ator_cuts2.png PA Audio changed design on driver The Boominator - another stab at the ultimate party machine *Google SketchUp drawing made by Saturnus* The Boominator mark II by Saturnus - Google 3D Warehouse Building process and end result by users Building process from an user Image hosting, free photo sharing & video sharing at Photobucket *Building process from an user* The Boominator - another stab at the ultimate party machinestab-ultimate-party-machine-74.html#post2295893 Building process from an user http://www.minhembio.com/forum/index.php?showtopic=262694&view=findpost&p=2909234 Building process from an user The Boominator - another stab at the ultimate party machine Last edited by donnib; 20th June 2011 at 08:01 PM.

20th June 2011, 11:28 PM	#1880
Phaedras diyAudio Member Join Date: Jul 2010 Location: Kolding, Denmark	I would like to remind people of the Boominator Meet-Up @ Roskilde Festival. Its Tuesday the 28th of June, at Agora G @ 15:00 (3pm) Meet-up! Also, go check out the Boominator facebook page for pictures and stuff Boominator Facebook __________________ Boominator Facebook-page - Boominator WIKI

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