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#116530 - 02/04/05 01:42 AM How many use direct boxes to plug the keyboard in the mixer?
STAM Offline
Member

Registered: 10/27/01
Posts: 246
Loc: Brussels, BELGIUM
??
Do you think it is a real advantage in the sound to use stereo direct box?

Stam

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#116531 - 02/04/05 02:05 AM Re: How many use direct boxes to plug the keyboard in the mixer?
MacAllcock Offline
Senior Member

Registered: 03/02/02
Posts: 1221
Loc: Preston, Lancashire, England
Lets explain....

A Direct Inject box takes an unbalanced input signal on a jack and turns it into a balanced signal ehich is output using an XLR connection. This is NOT a stereo signal; it is still a mono signal but it is now being transmitted down a twin-conducter shielded cable.

Microphones are the most common example of a piece of kit which produces a balanced signal directly.

Using a balanced signal has big advantages for long signal runs and/or low level signals because it is very resistant to external electrical noise when compared to an unbalanced signal (such as that produced by a keyboard or a guitar). This is especially noticeable on low level signals like Microphones and some Guitars.

For a stereo keyboard you would need two direct inject boxes, one for each channel.

But would it make much difference? If you are using decent shielded cables and your cables are less than (say) 10 metres long I'm not sure you'd notice much difference. The conversion of unbalanced to balanced tends to boost the signal so the keyboard would be louder. It could be argued that introducing anouther piece of interconnection between the keyboard and the mixer is just something else to go wrong.

So, speaking personally, if you are not very far from your mixer AND your cables are good quality then I don't think using Direct Injection box(es) will make much difference.

Hope this helps....
_________________________
John Allcock

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#116532 - 02/04/05 05:41 AM Re: How many use direct boxes to plug the keyboard in the mixer?
Fran Carango Offline
Senior Member

Registered: 05/26/99
Posts: 9673
Loc: Levittown, Pa, USA
The only time I use direct boxes..when I work at the Atlantic City casinos...The Stage is usually a long distance[100-200 feet] to the mixing console[$250k sound systems].
_________________________
www.francarango.com



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#116533 - 02/04/05 08:13 AM Re: How many use direct boxes to plug the keyboard in the mixer?
tony mads usa Offline
Senior Member

Registered: 01/16/02
Posts: 14376
Loc: East Greenwich RI USA
Fran . Do you take that sound system to every gig ??? .. .....
t.
_________________________
t. cool

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#116534 - 02/04/05 09:04 AM Re: How many use direct boxes to plug the keyboard in the mixer?
Fran Carango Offline
Senior Member

Registered: 05/26/99
Posts: 9673
Loc: Levittown, Pa, USA
Tony, I can only afford the cable leading to the direct box..
_________________________
www.francarango.com



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#116535 - 02/04/05 09:21 AM Re: How many use direct boxes to plug the keyboard in the mixer?
BlkNotes Offline
Member

Registered: 02/01/05
Posts: 220
Quote:
Originally posted by Fran Carango:
Tony, I can only afford the cable leading to the direct box..


Has anyone used a tubed preamp/mixer in their PA set-ups/kb amp?? I'm interested in the effects it has on sound.

Thanks
Regards;
SCP

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