Page 1 of 1

Plz Help With a Build a Dub Siren

Posted: Wed Apr 29, 2009 11:11 pm
by Dub Specialist
Big Up!! to all
right im new to this board been looking at it for ages now so i joined so is there anyone there cud help me build a little dub siren its jus something iv wanted to do for ages.now what ive got ive got a sound chip or watt eva you call it out of a pro sound mmx410 mixer u kno the one with the standed classic 8 sounds and it is wired up to a volume controll and a pitch/speed controll so am i 3/4 of the way there or not? so do i need just a 1/4in jack out and some power ie battery? or is it not that simple or is this bits n pieces no good at all? for it i wood apreciate your help i can post some pics.of the bits,,
and i do want to buy Jah Tubby's - SynFex - Syndrum Sound Effects Unit but with no luck tryed to contact them loads of times with no luck tryed last year aswell thay dont respond to you! can anyone give any info on them who can i contact! or if thay still build them or is it thay dont want to sell us them!
nuff respeck!!

Posted: Sat May 02, 2009 1:30 pm
by ocoughi
the sound effects board circuit is seperated from the board of the mixer?if yes, i guess you are at 3/4 the way, just find the + & - of the audio and power on it, with the right voltage and you got the siren. But before breaking the mixer i suggest this kind of circuit:
http://www.quasarelectronics.co.uk/smar ... erator.htm
ther is plenty of these things on the web, it's sheep and easy to build...
go to velleman's website too..
i suggest to build and then bend the circuit; it's not sold as a dubsiren but bending it, trimmers instead of lfo's resistors...etc, you can do your personal cool dubsiren! i tried some of these and it works! better and sheeper than jahtubby's stuff...
Manu

Dub Siren

Posted: Sat May 02, 2009 8:11 pm
by Dub Specialist
Big thnks
ocoughi iv posted some pics to give ya a better idea and did check out that site look good! but still wonderin if i can get this one up n running so how do i find the line out and how to find where to connect the power?
thnks

Dub siren

Posted: Sat May 02, 2009 8:12 pm
by Dub Specialist
pic2

Dub Siren

Posted: Sat May 02, 2009 8:13 pm
by Dub Specialist
pic3

Posted: Sun May 03, 2009 1:05 pm
by ocoughi
Hi Dub specialist,
well,well... the trimmer on the right is the volume trimmer isn't it? if so then the middle leg of it must be the line out(+). then you have to search the ground, on it you'll connect your line out(-) and the Voltage(-), it must be another leg of the volume trimmer, i think it's the left one.
all the push buttons have a common line in the circuit, this line is connected to the ground too! so if you follow it you'll find the ground. i don't see the voltage(+), do you have a photo of the other side of the circuit?
Can anyone confirm my theory?
Manu.

Dub Siren

Posted: Sun May 03, 2009 2:39 pm
by Dub Specialist
ocoughi
yes u are correct the right controll is the volume and the left is the bend/speed ect! ive added another pic of the orther side
thnks for your help much appreciated!
Dub S

Dus Siren

Posted: Sun May 03, 2009 2:40 pm
by Dub Specialist
pic

Posted: Sun May 03, 2009 5:58 pm
by ocoughi
it may be this:

Image

the little white plug with 3 legs is the only link between this circuit and the circuit of the mixer isn't it? so it has the 3 functions: the sound of the siren (line out (+)), the common ground (voltage(-) and line out(-)); and the voltage (+).
i only see this solution; it may work but carefull with the voltage and the polarity of your DC adapter....
it's a spare piece or you took it from a broken mixer?
If someone can confirm! 2 advises are better than one....
Manu

Dub Siren

Posted: Sun May 03, 2009 8:29 pm
by Dub Specialist
ocoughi
1st ye took it from broken mixer..you are 100% right man about the little white plug i had the the lead thats fits in there aswell and just like you said on pic i connected power of a 9volt battery + to the line out + then to the right pin in pic ..then - power battety and line out - to right pin in pic to a 1/4 jack..then just leaves the ground wire the one on the left side on pic but were does that wire go??
..i av tried it to a delay and sorted well cool little dub siren just need a battery box ,rubber feet and a housing to put it in and a logo!
just wanna say big thnks for helping me much appreciated and nuff respeck!!
Dub S

Posted: Sun May 03, 2009 10:01 pm
by ocoughi
You'r welcome bro!
it works without ground? sorry if i misunderstand but you wrote that it worked with a different wireing than the one i drawed?? :-)

Dub Siren

Posted: Mon May 04, 2009 12:11 am
by Dub Specialist
ocoughi
nah man watt u drawed was right its me prob the way i rit it!
peace brotha
and ye works without ground!

Posted: Mon May 04, 2009 8:55 am
by ocoughi
Ok cool! no parasit noise? even without the ground wired? ok....strange... but the first thing is here:it works...
Peace,
Manu

Dub Siren

Posted: Tue May 05, 2009 7:25 pm
by Dub Specialist
ocoughi
it doest like being dirrectly hooked up to a mixer dry then some mad noises from mixer volume n fader n controlls ect but wen hooked up to delay its ok then Strange? eh

so wud the ground be wired to inside of the housing box? or not cus ive put it in a plastic box from electronic shop!
big up fi ya help!
Dub S

Posted: Wed May 06, 2009 11:54 am
by ocoughi
Well, the "ground " has a lot of mistery for me! normaly it's connected to the (-) of the jack output and the (-) of the power transformer; thats the way i do and that the way a lot of hardware are made. BUT, a lot of hardware had a ground switch (on/off), so it can work without the ground connected.
So whats the real use of the "ground"?, i don't really know. the only thing i'm sure is that some bad noises can be generated when the ground is switched to on or off. i would suggest to try the two solutions and choose the better one (if you can here some diference between the two options).
Manu

Dub Siren

Posted: Wed May 06, 2009 10:14 pm
by Dub Specialist
ocoughi

i will check that out ,but like we say it works as i said though the delay its ok!
once again big thnks fi ya help n nuff respeck!!
Dub S