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Topic with many replies

Create your own festival stereo


Author Message
Written on: 24.01.2012 19:57
Hegner
Posts: 25
Hey guys, one of my friends are starting to build a speaker system, he will use a Harman Kardon 675 amp and a pair of Cerwin Vega Clsc15, his question is should he use a basic amp 9 instead? and does it delivers enough power to his clsc15? He got a 12-220v inverter, but wouldnt it be a big wastage of power to use the HK675 and the inverter?
Written on: 27.01.2012 13:53
Raven
Posts: 6
Yes. That would be a huge waste of power. I'll recommend you/your friend to read through this thread - it will provide you with a good basic knowledge about diy stereos.
Written on: 21.02.2012 22:10
Tommy
Posts: 3
Hey lydsystems folk!!

Vi tjekkede lige den her side ud og tænkte at i ville være interesseret i at være en del af vores initiativ! initiativet hedder United Sound Systems (U.S.S.) og går ud på at skabe et community med dels lydsystemer og dels gadefester i fokus.
Lydsystems delen vil være være muligt at snakke med de andre I U.S.S og debattere lydsystem, så vi alle bliver bedre til at bygge et nice system. Denne del er I høj grad bygget op omkring forum strukturen, så der er rig mulighed for at nørde havde end der er det mindste relateret til lydsystemer og gadefest.
Gadefest delen (som selvfølgelig også kan blive debatteret på forummet) vil primært have facebook som platform hvor det vil være muligt at poste en gadefest til alle de andre, som 'liker' siden, dvs. både andre lydsystemer og folk, som gerne vil til gadefest. Kort sagt kan man sige at lydsystems delen, er et lidt mere internt forum, hvor gadefest er meget eksternt.
En ting dette community gerne skal gøre, er at man får brugt sit lydsystem mere end den "ene gang på Roskilde", det er nemlig vores overbevisning at folk i byen er klar til mere fest på gaden. Vi håber at jer/jeres lydsystems-crew/jeres venner på gaden vil være med til at gøre det community større.
Det førnævnte forum er endnu ikke helt kommet op og stå, så det vi gerne vil have dig til at gøre til at starte med, er at lave en facebook-side til dit lydsystem, så vi kan gå ind og 'like' det, og vice versa. Håber det har vagt interesse. I er altid velkommen til at kontakte os, og selvfølgelig at gå ind og se hvordan vores facebook-side og vores preliminære webside indtil videre er designet.

www.facebook.com/unitedsoundsystems
www.unitedsoundsystems.danskforum.net

Mail: unitedsoundsystemsgmail[dot]com

Mvh Martin og Tommy, U.S.S.
Written on: 25.03.2012 18:39
Skottyboy
Posts: 3
Hey Roskilde!

Skal have solceller på årets roskilde anlæg icon_smile.gif Vi har 2 bådbatterier på 75 ampere i serie så vi har 24 volt! Men jeg har ikke den store forstand på solceller ? findes der flere forskellige slags ? i så fald hvilken er så bedst ?

Hvor mange watt skal de være på ? og har størrelsen nogen betydning ?

Skal vi bruge 2 - 1 til hvert batteri ? eller er 1 celle nok nu de er i serie ? icon_smile.gif og til sidst - kender i nogen steder hvor det er billigt ? eller nogen celler i kan anbefale ?



Og er der evt. noget vigtigt man skal kigge efter?

På forhånd tak!
Written on: 26.03.2012 14:22
Kasper Jensen
Posts: 5
Im not really all that into the technical stuff, but Orange Camp have made a neat little guide

http://www.orangecamp.dk/html/byg_solcelle_system.html (in danish)

Heres another small article on how to choose the right battery
http://roskilde-open.dk/blog/guide-til-valg-af-batterier
Written on: 26.03.2012 21:23
Emil Halme
Posts: 4
Hi
well im going to build a sound system for Roskilde Festival this year, and i have plans about
using one of my passive behringer monitors or maybe something cheaper and the amp that i am used to power my booth monitors with (Inuke 3000) but. the other day a friend of mine told me that digital amps will crash if there are being used with 12 volt carbatteries
do anyone around here use digital amps for their system and will the amp work? with car batteries?
Thank you icon_smile.gif
Written on: 26.03.2012 21:57
Saturnus
Posts: 3047
Behringer? Yuck! icon_smile.gif

Anyways. Is it a 12V amplifier?
Written on: 27.03.2012 13:03
Emil Halme
Posts: 4
i know that behringer not are the best sound but i know that its not sure that it will work after the festival... so no expensive goods icon_wink.gif
Its a 3000 watt class d amplifier
( http://www.behringer.com/EN/Products/NU3000.aspx )
Written on: 27.03.2012 14:16
Coldblooded
Posts: 1229
Emil Halme wrote:

i know that behringer not are the best sound but i know that its not sure that it will work after the festival... so no expensive goods icon_wink.gif
Its a 3000 watt class d amplifier
( http://www.behringer.com/EN/Products/NU3000.aspx )


Looks to be 220V-powered. How are you planning to power it with 12V car batteries!?
Written on: 27.03.2012 16:04
Saturnus
Posts: 3047
Coldblooded wrote:

Emil Halme wrote:

i know that behringer not are the best sound but i know that its not sure that it will work after the festival... so no expensive goods icon_wink.gif
Its a 3000 watt class d amplifier
( http://www.behringer.com/EN/Products/NU3000.aspx )


Looks to be 220V-powered. How are you planning to power it with 12V car batteries!?


He could use an inverter. Unfortunately, that would have to be capacble of handling 2000Wrms draw which don't come cheap. Cheapest I've seen is around DKK10.000,-.

Furthermore it would use a staggering amount of power. The combination of amp and inverter would draw something like 350W at full power. That's about 30A current draw at the battery, or enough to completely drain a car battery in about 10-12 minutes. At very low volumes the current draw would be more normal but you should not expect a battery to last more than maximum 2 hours even in idle, ie. not playing music at all.
Written on: 27.03.2012 18:24
Frederik
Posts: 2
Hi
I have connected a carbattery, a Lepai 268 D class amplifier, and 2 old speakers i had.
My first question is how to connect a mobile charger to this system?
Second question is whether or not i need a fuse (sikring) and if i do, which should it be?
Thanks in advance
Written on: 27.03.2012 22:40
Emil Halme
Posts: 4
Saturnus wrote:

Coldblooded wrote:

Emil Halme wrote:

i know that behringer not are the best sound but i know that its not sure that it will work after the festival... so no expensive goods icon_wink.gif
Its a 3000 watt class d amplifier
( http://www.behringer.com/EN/Products/NU3000.aspx )


Looks to be 220V-powered. How are you planning to power it with 12V car batteries!?


He could use an inverter. Unfortunately, that would have to be capacble of handling 2000Wrms draw which don't come cheap. Cheapest I've seen is around DKK10.000,-.

Furthermore it would use a staggering amount of power. The combination of amp and inverter would draw something like 350W at full power. That's about 30A current draw at the battery, or enough to completely drain a car battery in about 10-12 minutes. At very low volumes the current draw would be more normal but you should not expect a battery to last more than maximum 2 hours even in idle, ie. not playing music at all.



well its so deficult and expensive i bet i just need to dump that idea...
well do anyone so have a suggestion about building a cheep and easy one with something like 300 watts that will be able to play more than 2 hours per battery?...
Written on: 27.03.2012 23:49
Coldblooded
Posts: 1229
Emil Halme wrote:

Saturnus wrote:

Coldblooded wrote:

Emil Halme wrote:

i know that behringer not are the best sound but i know that its not sure that it will work after the festival... so no expensive goods icon_wink.gif
Its a 3000 watt class d amplifier
( http://www.behringer.com/EN/Products/NU3000.aspx )


Looks to be 220V-powered. How are you planning to power it with 12V car batteries!?


He could use an inverter. Unfortunately, that would have to be capacble of handling 2000Wrms draw which don't come cheap. Cheapest I've seen is around DKK10.000,-.

Furthermore it would use a staggering amount of power. The combination of amp and inverter would draw something like 350W at full power. That's about 30A current draw at the battery, or enough to completely drain a car battery in about 10-12 minutes. At very low volumes the current draw would be more normal but you should not expect a battery to last more than maximum 2 hours even in idle, ie. not playing music at all.



well its so deficult and expensive i bet i just need to dump that idea...
well do anyone so have a suggestion about building a cheep and easy one with something like 300 watts that will be able to play more than 2 hours per battery?...


You don't need 300 watts. If you have something with that output, it will milk the battery in minutes, like Saturnus describes. You probably need Saturnus' recipe for the Boominator, which plays really fucking loud and doesn't drain the battery like a thirsty baby.

Here are some useful links, axed from one of Saturnus' previous forum posts (hope it's OK, Johnny):


http://roskilde-open.dk/
http://roskilde-festival.dk/forum/mm_forum_pi1/posts/roskilde_babble/create_your_own_festival_stereo/
http://www.diyaudio.com/forums/class-d/104402-boominator-another-stab-ultimate-party-machine.html
http://www.facebook.com/theboominator
Written on: 28.03.2012 09:06
Emil Halme
Posts: 4
Coldblooded wrote:

Emil Halme wrote:

Saturnus wrote:

Coldblooded wrote:

Emil Halme wrote:

i know that behringer not are the best sound but i know that its not sure that it will work after the festival... so no expensive goods icon_wink.gif
Its a 3000 watt class d amplifier
( http://www.behringer.com/EN/Products/NU3000.aspx )


Looks to be 220V-powered. How are you planning to power it with 12V car batteries!?


He could use an inverter. Unfortunately, that would have to be capacble of handling 2000Wrms draw which don't come cheap. Cheapest I've seen is around DKK10.000,-.

Furthermore it would use a staggering amount of power. The combination of amp and inverter would
draw something like 350W at full power. That's about 30A current draw at the battery, or enough to completely drain a car battery in about 10-12 minutes. At very low volumes the current draw would be more normal but you should not expect a battery to last more than maximum 2 hours even in idle, ie. not playing music at all.



well its so deficult and expensive i bet i just need to dump that idea...
well do anyone so have a suggestion about building a cheep and easy one with something like 300 watts that will be able to play more than 2 hours per battery?...


You don't need 300 watts. If you have something with that output, it will milk the battery in minutes, like Saturnus describes. You probably need Saturnus' recipe for the Boominator, which plays really fucking loud and doesn't drain the battery like a thirsty baby.

Here are some useful links, axed from one of Saturnus' previous forum posts (hope it's OK, Johnny):


http://roskilde-open.dk/
http://roskilde-festival.dk/forum/mm_forum_pi1/posts/roskilde_babble/create_your_own_festival_stereo/
http://www.diyaudio.com/forums/class-d/104402-boominator-another-stab-ultimate-party-machine.html
http://www.facebook.com/theboominator


well okay i have looked a little around at the sites but it seems like everything is in english
and as you see is my english not the best in these kind of tech talks
so i wonder if there are a danish version somwhere? or at least some very handsome persons that would help me? icon_smile.gif
Written on: 28.03.2012 09:45
Coldblooded
Posts: 1229
Emil Halme wrote:

Coldblooded wrote:

Emil Halme wrote:

Saturnus wrote:

Coldblooded wrote:

Emil Halme wrote:

i know that behringer not are the best sound but i know that its not sure that it will work after the festival... so no expensive goods icon_wink.gif
Its a 3000 watt class d amplifier
( http://www.behringer.com/EN/Products/NU3000.aspx )


Looks to be 220V-powered. How are you planning to power it with 12V car batteries!?


He could use an inverter. Unfortunately, that would have to be capacble of handling 2000Wrms draw which don't come cheap. Cheapest I've seen is around DKK10.000,-.

Furthermore it would use a staggering amount of power. The combination of amp and inverter would
draw something like 350W at full power. That's about 30A current draw at the battery, or enough to completely drain a car battery in about 10-12 minutes. At very low volumes the current draw would be more normal but you should not expect a battery to last more than maximum 2 hours even in idle, ie. not playing music at all.



well its so deficult and expensive i bet i just need to dump that idea...
well do anyone so have a suggestion about building a cheep and easy one with something like 300 watts that will be able to play more than 2 hours per battery?...


You don't need 300 watts. If you have something with that output, it will milk the battery in minutes, like Saturnus describes. You probably need Saturnus' recipe for the Boominator, which plays really fucking loud and doesn't drain the battery like a thirsty baby.

Here are some useful links, axed from one of Saturnus' previous forum posts (hope it's OK, Johnny):


http://roskilde-open.dk/
http://roskilde-festival.dk/forum/mm_forum_pi1/posts/roskilde_babble/create_your_own_festival_stereo/
http://www.diyaudio.com/forums/class-d/104402-boominator-another-stab-ultimate-party-machine.html
http://www.facebook.com/theboominator


well okay i have looked a little around at the sites but it seems like everything is in english
and as you see is my english not the best in these kind of tech talks
so i wonder if there are a danish version somwhere? or at least some very handsome persons that would help me? icon_smile.gif


The Roskilde Open website is in Danish. Maybe this could serve as a modest startingpoint for you: http://roskilde-open.dk/blog/anlaegsguide_basic
Written on: 28.03.2012 18:21
chr kors
Posts: 54
Kan man se tegningerne af CoffinKisten anno 2012? Er altid sjovt at se hvad de har på hjertet.
Written on: 28.03.2012 18:37
chr kors
Posts: 54
http://a7.sphotos.ak.fbcdn.net/hphotos-ak-ash3/562575_10150790340233132_623353131_12019201_574146532_n.jpg

Mit lille gade-rave-anlæg, det spiller klart og rigtig højt.. Cerwin Vega går man ikke galt i byen med
Written on: 28.03.2012 18:47
chr kors
Posts: 54
Hegner wrote:

Hey guys, one of my friends are starting to build a speaker system, he will use a Harman Kardon 675 amp and a pair of Cerwin Vega Clsc15, his question is should he use a basic amp 9 instead? and does it delivers enough power to his clsc15? He got a 12-220v inverter, but wouldnt it be a big wastage of power to use the HK675 and the inverter?


The CLS15 are rated at 94dB. Based on that I would not recommend CLS15, rather some of the older CV speakers with a higher dB rating.
Written on: 19.04.2012 19:45
Phaedras
Posts: 42
Hey guys

Im selling my orange Boominator. An awesome Boombox for the upcoming summer, festivals, beachtrips etc etc.. Contact me on DBA.dk if you're interested!

http://www.dba.dk/boominator-jeg-saelger-min/id-82470211/

http://i42.tinypic.com/2q185cp.jpg
Written on: 19.04.2012 20:10
Kasper Lund
Posts: 9
Phaedras wrote:

Hey guys

Im selling my orange Boominator. An awesome Boombox for the upcoming summer, festivals, beachtrips etc etc.. Contact me on DBA.dk if you're interested!

http://www.dba.dk/boominator-jeg-saelger-min/id-82470211/

http://i42.tinypic.com/2q185cp.jpg


Why are you selling it? - for those who are thinking about buying it: i heard/saw this boominator at Roskilde festival last year and i can confirm that this is an extremely well build boominator!
Written on: 19.04.2012 20:27
Phaedras
Posts: 42
Kasper Lund wrote:

Phaedras wrote:

Hey guys

Im selling my orange Boominator. An awesome Boombox for the upcoming summer, festivals, beachtrips etc etc.. Contact me on DBA.dk if you're interested!

http://www.dba.dk/boominator-jeg-saelger-min/id-82470211/

http://i42.tinypic.com/2q185cp.jpg


Why are you selling it? - for those who are thinking about buying it: i heard/saw this boominator at Roskilde festival last year and i can confirm that this is an extremely well build boominator!


Sawdust addiction icon_wink.gif I love this boominator but I also love building and designing new things, so I might aswell sell it and maybe build something else!

And thank you for your kind words - i'm sure it will make someone really happy - and popular icon_wink.gif
Written on: 19.04.2012 20:52
Kasper Lund
Posts: 9
Phaedras wrote:

Kasper Lund wrote:

Phaedras wrote:

Hey guys

Im selling my orange Boominator. An awesome Boombox for the upcoming summer, festivals, beachtrips etc etc.. Contact me on DBA.dk if you're interested!

http://www.dba.dk/boominator-jeg-saelger-min/id-82470211/

http://i42.tinypic.com/2q185cp.jpg


Why are you selling it? - for those who are thinking about buying it: i heard/saw this boominator at Roskilde festival last year and i can confirm that this is an extremely well build boominator!


Sawdust addiction icon_wink.gif I love this boominator but I also love building and designing new things, so I might aswell sell it and maybe build something else!

And thank you for your kind words - i'm sure it will make someone really happy - and popular icon_wink.gif


Respect! icon_smile.gif - i could never do that even though i could build my second boominator to be much better than my first humble attempt.. I am sure that you will find a buyter!
Written on: 29.04.2012 12:52
Klippetop
Posts: 2
Hey everyone.

Spend the last couple of days reading up on this thread and the boominator and i'm convinced we need to rebuild our setup and move to a ta2020 amp.

However we have a slightly smaller budget than most here, so i though i would post my idea for tips and input.

I have a Topping Mark II ta2020 amp I was gonna use.

I remenber the boominators from last year, and we dont need that much volume, so i was thinking about using 2x these HP-10T (one on each channel):
http://www.ljudia.no/hyttalerelementer-s82124/bredband-c78505/paudio-hp-10t-p78506/

I see in the 41Hz forum that grand master saturnus says that they wont disperse high frequency sound as well as a piezo, but this is for a 7 person camp. He also writes that it would need new box design.

The design is my main concern. I tried using WinISD but, i'm not strong in the whole frequency thingy. I'm thinking closed box maybe, but dont know about individual compartments for each driver or just a big room with everything in it(?). Also needed volume? Small would be nice (50-100L?).

Source is mp3 and car batteries (we get them for free luckily). Gonna put a usb plug in also, but thats not a problem.

I really hope that i'm not asking already answered questions. But I cant find much forum info on the hp10t's.

Any input would be appreciated. This would be a very cheap setup if it makes sense building.

Klippetop
Written on: 30.04.2012 11:38
Camp Balloon
Posts: 24
Hi,

After reading numerous sites on how to filter/limit your subs, then I'm still not sure how to proceed.

Our setup is based on Amp6b and on each channel is the following connected:
2 x HP10W with piezo's on top(With resistors in between)
2 x HP12W

So my question is, wouldn't be a good idea to limit the HP12W to somewhere around 3Khz? (According to what i've been able to find, this is the recommended value)

And that leads me to the next question, is all i need an 0.21 mH inductor in order to do this? (Based on this calculator: http://www.diyaudioandvideo.com/Calculator/XOver/)

Looking forward to hearing your input icon_smile.gif


Written on: 30.04.2012 16:16
Klippetop
Posts: 2
Please ignore my last post (2 above). I'm just gonna build half a boominator instead..



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