Halfinator Build - For sale - 28/2 |
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roopes
Registered User Joined: 04 January 2016 Status: Offline Points: 83 |
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The problem is not yet fixed, but accusafe sent me a new amplifier that im going to test out. And if u want to calculate other amplifiers other than maxamp? is there a way to do that? |
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lutkeveld
Young Croc Joined: 23 September 2013 Location: The Netherlands Status: Offline Points: 517 |
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There are a lot of factors to consider:
-Battery type (voltage, max discharge %) -Amplifier (idle current, max output) -Volume (how loud you're playing) -Power usage external components (BT modules, voltage regulators) -Type of music that is played (mainly crest factor) There is no one easy formula unfortunately. I'll explain how each factor affects playtime: -Battery type: higher voltage results in higher idle loss, but allows for higher max output power (which in turn causes higher power draw at max volume) -Amplifier: on low to medium levels (<1W) idle current dominates the equation. -External components: things like DC DC converters, USB chargers etc consume quite a lot of power compared to an amplifier -Type of music: low crest factor (lower average to peak difference) results in higher power draw, clipping can lower the musics natural crestfactor. As a rule of thumb formula (only amplifier, no significant external power users): High volume: Useable battery capacity in Wh divided by (total max output / 8) Low volume: Useable battery capacity divided by amplifier idle power
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roopes
Registered User Joined: 04 January 2016 Status: Offline Points: 83 |
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Thanks for a good answer! |
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roopes
Registered User Joined: 04 January 2016 Status: Offline Points: 83 |
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Update 2016-02-16 see first post
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roopes
Registered User Joined: 04 January 2016 Status: Offline Points: 83 |
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At 80% volume on my iphone 6s the sound is starting to become crap, is this normal?
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Ganon
Registered User Joined: 07 May 2014 Location: Denmark Status: Offline Points: 114 |
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Yes. The Iphone has it's max output just around there. The last three-four dots are an over output.
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roopes
Registered User Joined: 04 January 2016 Status: Offline Points: 83 |
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Thanks Ganon! Then it's all good, and it sounds fantastic for being a portable 270$ homemade speaker!
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roopes
Registered User Joined: 04 January 2016 Status: Offline Points: 83 |
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Im interested in building a full boominator, so if anyone wants to buy a halfinator then this is for sale.
Located in Sweden |
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Ganon
Registered User Joined: 07 May 2014 Location: Denmark Status: Offline Points: 114 |
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What about building one more Halfinator and use some Locks/Henges/butterflylocks, to connect them, so that you have a boominator that can be split up to a Halfinator.
Then it's possible to use them as monitors or only have a halfinator with you, if its only needed. :) |
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roopes
Registered User Joined: 04 January 2016 Status: Offline Points: 83 |
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Yea thats a good idea actually! I already have the wood cut up for one more halfinator Edited by roopes - 19 February 2016 at 6:53pm |
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Ganon
Registered User Joined: 07 May 2014 Location: Denmark Status: Offline Points: 114 |
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I am planning to make build like that, a Multinator. :P
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lutkeveld
Young Croc Joined: 23 September 2013 Location: The Netherlands Status: Offline Points: 517 |
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Or you could upgrade the battery/amplifier. A 24V the Halfinator will be as loud as the full-size on 12V.
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