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Topic with many replies

Create your own festival stereo


Author Message
Written on: 03.04.2009 11:55
Saturnus
Posts: 3047
Just checked ... yeah they do have smaller versions. For example a 5 watt one for €60, which is a fairly standard watt/price ratio in Europe (except in Denmark and Norway where prices are insane).

That 15 watt panel is just fantastic value for money at 15 watt for €100 ... highly recommended.
Written on: 08.04.2009 00:26
Cos
Posts: 39
Saturnus skrev:

Just checked ... yeah they do have smaller versions. For example a 5 watt one for €60, which is a fairly standard watt/price ratio in Europe (except in Denmark and Norway where prices are insane).

That 15 watt panel is just fantastic value for money at 15 watt for €100 ... highly recommended.


Thanks I think I'll just go ahead and order it thenicon_smile.gif
BTW have you ordered from intertechnik.de before?
I ordered the speakers you linked to earlier, last friday. When can I
expect them to show up?
Written on: 08.04.2009 00:35
Saturnus
Posts: 3047
Cos skrev:

Saturnus skrev:

Just checked ... yeah they do have smaller versions. For example a 5 watt one for €60, which is a fairly standard watt/price ratio in Europe (except in Denmark and Norway where prices are insane).

That 15 watt panel is just fantastic value for money at 15 watt for €100 ... highly recommended.


Thanks I think I'll just go ahead and order it thenicon_smile.gif
BTW have you ordered from intertechnik.de before?
I ordered the speakers you linked to earlier, last friday. When can I
expect them to show up?


I'd say any day now. Expect up to 10 days delivery time. intertechnik.de is one of Germany's oldest and most respected electronics suppliers. They have an impeccable reputation.

Send them an e-mail if it has shown up by Tuesday (they take Easter pretty seriously in Germany, so I would expect anything during Easter).

[This article was edited 1 times, at last 08.04.2009 at 00:36.]
Written on: 08.04.2009 19:20
Cos
Posts: 39
So I tried to order the solar panel, but it seems they only deliver in Holland?
Written on: 08.04.2009 19:38
Saturnus
Posts: 3047
Cos skrev:

So I tried to order the solar panel, but it seems they only deliver in Holland?


Yeah, maybe. I had one of my dutch friends order it and bring it with him when he was in Denmark last, so I actually don't know about that.
Written on: 08.04.2009 23:39
Cos
Posts: 39
Found another retailer. Will this do?

http://dk.farnell.com/raloss/sr5-36/solar-panel-5w/dp/1462491

And another question (I know I have alot) will I need a DC-plug to connect the batteries to the amp6 basic?
Written on: 08.04.2009 23:43
Saturnus
Posts: 3047
Yes, you'll need a DC-plug, it's a wide used standard pluf though.

Please note, that panel is only 5W, and more importantly, it's not an amorphous panel, meaning you have to constantly angle it at the Sun to get maximum power. And it doesn't work well in overcast conditions.
Written on: 09.04.2009 00:37
Cos
Posts: 39
I think I'm right on the money with this one icon_biggrin.gif
http://www.selectsolar.co.uk/pics/7.5W%20Sunsei.php
Written on: 09.04.2009 01:08
Saturnus
Posts: 3047
Cos skrev:

I think I'm right on the money with this one icon_biggrin.gif
http://www.selectsolar.co.uk/pics/7.5W%20Sunsei.php


Yup. Note the price though, it's going to be around £100 for delivery in Denmark, or roughly the same price as the 15W dutch panel.
Written on: 10.04.2009 00:03
Cos
Posts: 39
Guess whaticon_smile.gif (you must be getting sick of me by now) we tried to solder the amp6 and finished it today but it didn't workicon_frown.gif
(none of us are big on soldering) we're trying to do some troubleshooting but we're not getting our hopes up.
so I searched the web for a possible alternative and I found this

http://www.templeaudio.net/bantam.html

Will this perform similar to the amp6?
Written on: 10.04.2009 00:42
Saturnus
Posts: 3047
Cos skrev:

Guess whaticon_smile.gif (you must be getting sick of me by now) we tried to solder the amp6 and finished it today but it didn't workicon_frown.gif
(none of us are big on soldering) we're trying to do some troubleshooting but we're not getting our hopes up.
so I searched the web for a possible alternative and I found this

http://www.templeaudio.net/bantam.html

Will this perform similar to the amp6?


You can always repair an amp6b ... just ask on the 41hz.com forum, and I or V-bro will guide you through it ... worst case is that I come and help you, if you live somewhere near Copenhagen
Written on: 10.04.2009 10:17
Cos
Posts: 39
Saturnus skrev:

Cos skrev:

Guess whaticon_smile.gif (you must be getting sick of me by now) we tried to solder the amp6 and finished it today but it didn't workicon_frown.gif
(none of us are big on soldering) we're trying to do some troubleshooting but we're not getting our hopes up.
so I searched the web for a possible alternative and I found this

http://www.templeaudio.net/bantam.html

Will this perform similar to the amp6?


You can always repair an amp6b ... just ask on the 41hz.com forum, and I or V-bro will guide you through it ... worst case is that I come and help you, if you live somewhere near Copenhagen


We live in Buddinge, but we can come to you if that's easier. We will try
asking around in the forum for starters.
but I was thinking if I could send you some close-up pictures of the amp to you
and you might be able to spot the problem?
Written on: 13.04.2009 20:06
ThokN
Posts: 77
Hello Saturnus and Cos.

I've read your conversation since our camp is going to upgrade our festival stereo. It is clear that we are amateurs in comparison, but still managed to create a BIG box that could play very loud. However, it was very power hungry, so now I'm thinking that your approach could be a great way to improve our stereo this year.

I just have a couple of questions I hope you can answer for us.

1. Our system is quite big because we want it to be able to make a great party with a lot of people, so do you think 4 of those pro 10" you are talking about,(incl. Piezo-tweeters) can play loud enough for us? (maybe 50+ people)

2. Is the AMP6Basic even powerful enough? It looks so small. Last year we had a 1000Watts car-amplifier connected to 4x cheap 300Watt car-speakers. But none of us understand those Watt calculations and RMS and so on, so that might have been a total overkill? And how many Watts is the AMP6?

3. What about your "Part 2" where you will give us the great tips for good outdoor-acoustics? icon_wink.gif

Hope you can help us icon_smile.gif
Written on: 13.04.2009 20:08
ThokN
Posts: 77
Cos skrev:

Saturnus skrev:

Cos skrev:

Guess whaticon_smile.gif (you must be getting sick of me by now) we tried to solder the amp6 and finished it today but it didn't workicon_frown.gif
(none of us are big on soldering) we're trying to do some troubleshooting but we're not getting our hopes up.
so I searched the web for a possible alternative and I found this

http://www.templeaudio.net/bantam.html

Will this perform similar to the amp6?


You can always repair an amp6b ... just ask on the 41hz.com forum, and I or V-bro will guide you through it ... worst case is that I come and help you, if you live somewhere near Copenhagen


We live in Buddinge, but we can come to you if that's easier. We will try
asking around in the forum for starters.
but I was thinking if I could send you some close-up pictures of the amp to you
and you might be able to spot the problem?


Hi Cos.

Did you manage to get the AMP6 working? We are maybe buying one, but none of us are soldering-experts either :s
Written on: 13.04.2009 20:35
Saturnus
Posts: 3047
ThokN skrev:

Cos skrev:

Saturnus skrev:

Cos skrev:

Guess whaticon_smile.gif (you must be getting sick of me by now) we tried to solder the amp6 and finished it today but it didn't workicon_frown.gif
(none of us are big on soldering) we're trying to do some troubleshooting but we're not getting our hopes up.
so I searched the web for a possible alternative and I found this

http://www.templeaudio.net/bantam.html

Will this perform similar to the amp6?


You can always repair an amp6b ... just ask on the 41hz.com forum, and I or V-bro will guide you through it ... worst case is that I come and help you, if you live somewhere near Copenhagen


We live in Buddinge, but we can come to you if that's easier. We will try
asking around in the forum for starters.
but I was thinking if I could send you some close-up pictures of the amp to you
and you might be able to spot the problem?


Hi Cos.

Did you manage to get the AMP6 working? We are maybe buying one, but none of us are soldering-experts either :s


As far as I know he hasn't made any posts on the 41hz forum so I guess not.

It's really really simple to solder. Just apply patience, that is all you need really.
Written on: 13.04.2009 21:00
ThokN
Posts: 77
Okay thank you!

Do you think you can help us with the 3 questions in my previous post? icon_smile.gif
Written on: 14.04.2009 13:49
Cos
Posts: 39
Well i haven't posted anything on 41hz.com because i found out what was wrong, as I said earlier none of us who are building the box is any good at soldering, so I had one of my freinds who knows about this stuff take a look at it and from what he could tell we somehow managed to ruin the soldering spots on the print.
But luckily for us we found an alternative.
A premade tripath amp which is using the same TA2020 chip on ebay.

I can let you know how it works out once I have received it.

Oh and for your question about the amp being powerfull enough?
yes, it should do fine, if you lok at saturnus' BOOMINATOR i think you'll be convinced.

And the good thing about the amp is that it should be able to run at maximum volume for 4 hours of every ah your battery has.'

As for the rest of your questions I think my and saturnus' conversation in the thread covers them all.

But still if you have any technical questions, Saturnus is your go 2 guyicon_smile.gif
Written on: 14.04.2009 14:42
MCP_DK
Posts: 126
I Hope when you are all done you will post some pictures with specs.

http://www.sveden.dk/images/smiles/worthless.gif
Written on: 14.04.2009 21:32
Jim Daggerthuggert
Posts: 597
MCP_DK skrev:

I Hope when you are all done you will post some pictures with specs.

http://www.sveden.dk/images/smiles/worthless.gif


http://img340.imageshack.us/img340/8915/dsc00019iv2.jpg

Saturnus' boominator from last year... It was great!

(More pic on http://www.diyaudio.com/forums/showthread.php?threadid=104402)

[This article was edited 1 times, at last 14.04.2009 at 21:33.]
Written on: 01.05.2009 00:10
Cos
Posts: 39
Okay so we finally got the amp we ordered from Hong Kong and we hooked it all up today, note the amp uses the tripath TA2020 chip, we cranked the volume to the max and......... anticlimaxicon_frown.gif it's not nearly as loud as we have hoped. Can anyone think of anything we may have done wrong? we connected the sll the units as instructed by saturnus so we are pretty sure that, that is not it. could it just be a bad quality amp?
Written on: 01.05.2009 00:12
Saturnus
Posts: 3047
Cos skrev:

Okay so we finally got the amp we ordered from Hong Kong and we hooked it all up today, note the amp uses the tripath TA2020 chip, we cranked the volume to the max and......... anticlimaxicon_frown.gif it's not nearly as loud as we have hoped. Can anyone think of anything we may have done wrong? we connected the sll the units as instructed by saturnus so we are pretty sure that, that is not it. could it just be a bad quality amp?


What's your source? The problem is most likely that you used an iPod or other modern mp3 player. They have extremely low output so you have to make changes to the amp or use a preamp/trafo

[This article was edited 1 times, at last 01.05.2009 at 00:14.]
Written on: 01.05.2009 07:48
Deleted user European music players are required by law to have a very low limit on their output, which is a total bitch when hooking up to anything other than earbuds. iPods are hackable, but I've been unable to do so myself as of yet.

By European of course, I mean just those purchased in the EU.

[This article was edited 1 times, at last 01.05.2009 at 07:49.]
Written on: 01.05.2009 07:51
Saturnus
Posts: 3047
Emilius skrev:

European music players are required by law to have a very low limit on their output, which is a total bitch when hooking up to anything other than earbuds. iPods are hackable, but I've been unable to do so myself as of yet.


Luckily you don't actually need to with a TA2020 based amp. You can just set the gain of the amp higher instead (of course you'll have to know how to do that which is why I need to know if I'm right in my assumption, and need to know precisely which TA2020 based amp it is).
Written on: 01.05.2009 08:11
Deleted user I'm by no means an expert on the subject, my knowledge of signal processing and analogue electronics is limited to the theory.

Noob question though: Amping up a low audio signal after the source rather than in the source itself, doesn't that cause unwanted distortion?
Written on: 01.05.2009 08:22
Saturnus
Posts: 3047
Emilius skrev:

I'm by no means an expert on the subject, my knowledge of signal processing and analogue electronics is limited to the theory.

Noob question though: Amping up a low audio signal after the source rather than in the source itself, doesn't that cause unwanted distortion?


Yes. And you can hear it on my boombox when you have a charger connected to the iPod while playing, you can hear the charging circuit distorting the output of iPod but during normal play (and with the background noise at the festival) it's almost impossible to hear even with the ear close to the speaker because thankfully being in an open field with very low density of electronic equipment makes RF distortion almost go away completely which is the type of distortion you'd risk getting in such a set up (low output + high gain).


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