xu4 sound bonnet debugging and install thread

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xu4 sound bonnet debugging and install thread

Unread postby phaseshifter » Sat Sep 09, 2017 10:38 am

since there really is not any "wiki" info for the xu4 i start this thread..it is a works in progress....
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Re: xu4 sound bonnet debugging and install thread

Unread postby odroid » Sat Sep 09, 2017 11:17 am

XU4 works with Boom Bonnet kit out of the box.
https://wiki.odroid.com/accessory/sound ... odroid-xu4
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Re: xu4 sound bonnet debugging and install thread

Unread postby phaseshifter » Mon Sep 11, 2017 1:14 pm

ok so i got my s-bonnet today and all my references will be with it running on my xu4..

ok poping and crackling...easy fix

it`s an earthing problem
take a piece of thin flex wire strip both ends 1cm tape one end to the rear dome of the speaker either one will do

connect the other end to the usb3 chassis earthing it out pop`s and crackles gone...phase...

with my bonnet i got supplied 3 5mm m3 hex spacers and 3 m3 screws..three why three..????
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Re: xu4 sound bonnet debugging and install thread

Unread postby phaseshifter » Mon Sep 11, 2017 1:31 pm

if your using the headphones out jack detach the earth wire..it seems odd but it causes noise if you have it fitted whilst using the jack out..

i have not used the 3 pin header audio out as yet....
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Re: xu4 sound bonnet debugging and install thread

Unread postby phaseshifter » Mon Sep 11, 2017 1:34 pm

ok so it seems there is slight noise on the line..i will endevour to sort that out as well..but with the volume half way the sound seems to drone it out...
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Re: xu4 sound bonnet debugging and install thread

Unread postby phaseshifter » Mon Sep 11, 2017 4:06 pm

ok so i now have the bonnet screwed to the xu4 its sideways 90 degrees....i think that the long screws and the holes are providing an earthing if this is at all possible ..

other than that all noise pop`s crackles have not returned..and i dont have the earth strap fitted as i did earlier..
i think that the line out to my amp is providing the return earth that is why the strap is not doing any difference.
if powering just the bonnet then you need to have the earth strap to give the unit a proper ground..y i dunno..it just does..earth loops and traps..often occur in audio gear..

on a different note i dont have and back cone cc chambers..i will get there...
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Re: xu4 sound bonnet debugging and install thread

Unread postby phaseshifter » Mon Sep 11, 2017 5:30 pm

on a further note there is no real rear cone air space on those sealed speakers..so enclosures may be of no advantage...i run it as a preamp at present into my preamp and so on...but you may do justice with some mini speakers "small monitors" if you will......
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Re: xu4 sound bonnet debugging and install thread

Unread postby mad_ady » Mon Sep 11, 2017 6:24 pm

Did you get popping and cracking noises everytime, or only on specific cases? I use my bonnet with a C2 and I get cracking and popping only when switching video input to HDMI and starting to play a movie or making a sound by navigating through the menu. I don't think it's related to the speakers - I will test with a headphone. I think in my case the cracking comes from i2s initialization from kodi.
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Re: xu4 sound bonnet debugging and install thread

Unread postby phaseshifter » Mon Sep 11, 2017 7:14 pm

i get cracling and pop`n without the earth strap or earth from my preamp..and i also get what you may call processor or system noise sort of swirling noise..i have not tried it on a c-2 as yet dont think i will since i have hi-fi2 on it
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Re: xu4 sound bonnet debugging and install thread

Unread postby phaseshifter » Mon Sep 11, 2017 7:18 pm

seems not many other operators have a bonnet just yet..see what comes from others than us few who do...
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Re: xu4 sound bonnet debugging and install thread

Unread postby phaseshifter » Mon Sep 11, 2017 7:53 pm

i get noise whenever i move the mouse trough the output side of the bonnet as i turn the volume completely of i still get these noises..
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Re: xu4 sound bonnet debugging and install thread

Unread postby phaseshifter » Mon Sep 11, 2017 9:18 pm

get an empty tissue box 20cmx10cmx12cm approxx take the top of the box where tissues come out point it towards you sitting the box on it`s side

take the speakers place them face down on the top of the box sit sound board next to the speakers.... aprox 6cm apart play music enjoy..phase,,,...
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Re: xu4 sound bonnet debugging and install thread

Unread postby mad_ady » Mon Sep 11, 2017 9:43 pm

Could I trouble you for a picture?
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Re: xu4 sound bonnet debugging and install thread

Unread postby phaseshifter » Mon Sep 11, 2017 9:48 pm

want stereo use 2 tissue boxes...oh the speakers/drivers are just sitting there face down...

i`ll post some pics 2 morrow when i dig up another tissue box...
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Re: xu4 sound bonnet debugging and install thread

Unread postby phaseshifter » Mon Sep 11, 2017 10:21 pm

a couple of c-2 boxes just 4 stereo effect...lol...lol
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4.9.xx.xx XU3-LITE and U-2
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Re: xu4 sound bonnet debugging and install thread

Unread postby mad_ady » Mon Sep 11, 2017 11:23 pm

I may need to order 2 additional C2s for their case :D
Did you cut a hole in the boxes?
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Re: xu4 sound bonnet debugging and install thread

Unread postby phaseshifter » Tue Sep 12, 2017 2:29 am

no the boxes have just have the end folded into the box so allows for sound out and the speakers are just sitting there....
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Re: xu4 sound bonnet debugging and install thread

Unread postby mad_ady » Sat Sep 16, 2017 12:14 am

I just tried with two xu4 boxes pressed to the front of the speakers and the difference in sound quality is amazing!
Question is - what's the best way to attach the box to the speaker front? (gravity doesn't work for me)
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Re: xu4 sound bonnet debugging and install thread

Unread postby phaseshifter » Sat Sep 16, 2017 2:32 am

tat is a good question..im thinking a couple of very small tiny dabb`s of superglue...you want the cone attached to the box but you dont want to lose it`s throw of the speaker.
.really i dont think i have any other answer atm..i have been busy with other stuff atm...
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Re: xu4 sound bonnet debugging and install thread

Unread postby mad_ady » Sat Sep 16, 2017 2:48 am

I was thinking of using rubber bands, but I don't have an optimal way to tie them. I will experiment this weekend
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Re: xu4 sound bonnet debugging and install thread

Unread postby phaseshifter » Sat Sep 16, 2017 2:50 am

yes that would work most likely you will have to play with the force that you apply though to much and the speaker will lose its throw...!!!
4.9.xx.xx XU3-LITE and U-2
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