Sujet DI active ou passive ?
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J'ai trouvé ça comme spécification pour ton Fostex D-108 :
OUTPUT (1 ~ 8) Connector : RCA pin jack (X 8) Load impedance : 10k or more Output level : -10dBV
Donc pas de soucis, en terme d'impédance tu peux utiliser des DI passives pour symétriser ses sorties (Suivant les marques et modèles les DI passives ont une impédance d'entrée entre 50 et 150kOhms).
Tu auras sans doute un signal un peu moins fort qu'avec une DI active.
C'est surtout pour les sources haute impédance (ex : basse passive) où la DI active est souhaitable.
Ce qui n'empêche pas certains d'utiliser des DI passives avec succès.
Ce qui sonne pour l'un ne l'est pas tjrs pour un autre.
Nonolepiano
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vasseurH
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Citation :
à Nonolepiano : Si j'ai bien compris, une passive suffirait donc ?
J'ai trouvé ça comme spécification pour ton Fostex D-108 :
OUTPUT (1 ~ 8) Connector : RCA pin jack (X 8) Load impedance : 10k or more Output level : -10dBV
Donc pas de soucis, en terme d'impédance tu peux utiliser des DI passives pour symétriser ses sorties (Suivant les marques et modèles les DI passives ont une impédance d'entrée entre 50 et 150kOhms).
Tu auras sans doute un signal un peu moins fort qu'avec une DI active.
C'est surtout pour les sources haute impédance (ex : basse passive) où la DI active est souhaitable.
Ce qui n'empêche pas certains d'utiliser des DI passives avec succès.
Ce qui sonne pour l'un ne l'est pas tjrs pour un autre.
Nonolepiano
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Membre depuis 22 ans
vasseurH
156
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Membre depuis 18 ans
arnaud.s
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Membre depuis 12 ans
Bonjour,
je suis à la recherche d'une boîte de DI rackable pour une TD-30 (8pistes) et un synthé (4 pistes).
Je suis tombé sur la Palmer pan16 pour 255€ et le Radial Pro D8 pour 899€.
Je me demandais donc si il y a une différence entre les deux pour le prix.
merci beaucoup
je suis à la recherche d'une boîte de DI rackable pour une TD-30 (8pistes) et un synthé (4 pistes).
Je suis tombé sur la Palmer pan16 pour 255€ et le Radial Pro D8 pour 899€.
Je me demandais donc si il y a une différence entre les deux pour le prix.
merci beaucoup
Anonyme
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arnaud.s
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Nouvel·le AFfilié·e
Membre depuis 12 ans
remy06
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Membre depuis 19 ans
Bonjour à tous,
ORCHID ELECTRONICS est une marque anglaise qui fabrique de bonnes DI actives de studio ou pour le live. J'ai acheté chez eux des Dual Channel Micro DI Box et le son est nickel en sortie de mes synthés (Octatrack, Access Virus, Waldorf, Korg et Novation).
L'ensemble des synthés est relié sur une carte audio Metric Halo, alim. 48v pour alimenter les DI et je suis ravi du son que j'obtiens: c'est plein, dynamique et précis dans l'aigu (aucune agressivité). J'ai pu relier aussi bien des synthés à modélisation analogique de type Virus ou des analos comme le PULSE2, c'est parfait !
J'ai aussi une paire de DI Radial active et franchement niveau rendu sonore, c'est kif-kif... par contre niveau prix y'a pas photo.
Voilà, si ça peut servir
http://www.orchid-electronics.co.uk/products.htm
ORCHID ELECTRONICS est une marque anglaise qui fabrique de bonnes DI actives de studio ou pour le live. J'ai acheté chez eux des Dual Channel Micro DI Box et le son est nickel en sortie de mes synthés (Octatrack, Access Virus, Waldorf, Korg et Novation).
L'ensemble des synthés est relié sur une carte audio Metric Halo, alim. 48v pour alimenter les DI et je suis ravi du son que j'obtiens: c'est plein, dynamique et précis dans l'aigu (aucune agressivité). J'ai pu relier aussi bien des synthés à modélisation analogique de type Virus ou des analos comme le PULSE2, c'est parfait !
J'ai aussi une paire de DI Radial active et franchement niveau rendu sonore, c'est kif-kif... par contre niveau prix y'a pas photo.
Voilà, si ça peut servir
http://www.orchid-electronics.co.uk/products.htm
Ingénieur du son depuis 1996 // QFG Studios //
SoundGrid Expert Certified (Waves Audio)
http://www.qfgstudios.com
remy06
170
Posteur·euse AFfiné·e
Membre depuis 19 ans
Pour ceux qui lisent l'anglais, informations récupérées sur le site de Orchid Electronics 
http://www.orchid-electronics.co.uk/questions.htm#question1
Here are some frequently asked questions and answers:
1) What is a DI Box for?
Firstly, DI stands for Direct Inject - which means that it is a convenient way to connect (or inject) a musical instrument, or other audio signal, to a mixing console.
2) Why use a DI Box?
Musical instruments usually have an output signal that is not directly compatible with either the microphone input (which is designed for signals from a low impedance, balanced microphone) - or the line input, which is usually of insufficient sensitivity, or not of optimum impedance. In addition the mixer is often a long distance from the performers, or instruments.
3) What is a Phantom Power?
With a balanced audio connection from a mixer microphone input - which consists of a pair of conductors surrounded by a braid, or screen - it is possible to feed power in addition to the audio signal. A DC supply (48 volts) is fed via a pair of resistors (6K8 ohms) onto each of the two audio carrying conductors. This can be picked up in the microphone (or DI Box) and used to power active circuitry. The current returns via the screen of the cable. It is called "Phantom" because if you should measure across the audio pair with a sensitive voltmeter, nothing would be detected. This is because both wires are at exactly equal potential - so nothing can be measured. If you should check between either of the wires and the screen, however, the voltage will be measured.
4) Why Balanced Output?
Because the output of the DI Box is intended to feed the microphone input of a mixer (which is balanced) - it is appropriate to employ balanced working. The advantage is that the cable connection between DI Box and mixer can be very long (hundreds of metres if necessary), without picking up hum, noise and interference from other sources. In a big concert, or festival situation, the distance between the stage and the mixing position can be enormous - so balanced working is essential.
5) Battery Drawer
The Standard DI Box can be powered from either an internal battery, or Phantom power fed from the mixer. The battery is housed in a convenient drawer, which can be removed with a coin, or even with finger pressure. This enables batteries to be changed, or removed, easily - without the use of tools. If using Phantom power it is not necessary to remove the battery, as the DI Box senses and uses the higher voltage of the two voltages presented to it. If the Phantom supply should fail the battery will take over instantly, if fitted. Please note that the red LED only illuminates if the Phantom supply is present. This can be useful when setting up as it can be seen from the mixing position, assuring the sound engineer of the connection.
6) Why no earth lift switch?
Earth lift isolation to prevent the formation of hum loops is taken care in the circuitry of our DI Boxes - so no switch is fitted. On some manufactures DI Boxes you cannot use Phantom power with the switch in the lifted (or earth disconnected) position. It is also our experience that anything that can be fiddled with (or adjusted) - will be! On several occasions the sound has been fine at the sound check, but when the concert begins a mystery hum appears on one of the audio feeds due to the spurious operation of an earth lift switch. Better to design it out of the product!
http://www.orchid-electronics.co.uk/questions.htm#question1
Here are some frequently asked questions and answers:
1) What is a DI Box for?
Firstly, DI stands for Direct Inject - which means that it is a convenient way to connect (or inject) a musical instrument, or other audio signal, to a mixing console.
2) Why use a DI Box?
Musical instruments usually have an output signal that is not directly compatible with either the microphone input (which is designed for signals from a low impedance, balanced microphone) - or the line input, which is usually of insufficient sensitivity, or not of optimum impedance. In addition the mixer is often a long distance from the performers, or instruments.
3) What is a Phantom Power?
With a balanced audio connection from a mixer microphone input - which consists of a pair of conductors surrounded by a braid, or screen - it is possible to feed power in addition to the audio signal. A DC supply (48 volts) is fed via a pair of resistors (6K8 ohms) onto each of the two audio carrying conductors. This can be picked up in the microphone (or DI Box) and used to power active circuitry. The current returns via the screen of the cable. It is called "Phantom" because if you should measure across the audio pair with a sensitive voltmeter, nothing would be detected. This is because both wires are at exactly equal potential - so nothing can be measured. If you should check between either of the wires and the screen, however, the voltage will be measured.
4) Why Balanced Output?
Because the output of the DI Box is intended to feed the microphone input of a mixer (which is balanced) - it is appropriate to employ balanced working. The advantage is that the cable connection between DI Box and mixer can be very long (hundreds of metres if necessary), without picking up hum, noise and interference from other sources. In a big concert, or festival situation, the distance between the stage and the mixing position can be enormous - so balanced working is essential.
5) Battery Drawer
The Standard DI Box can be powered from either an internal battery, or Phantom power fed from the mixer. The battery is housed in a convenient drawer, which can be removed with a coin, or even with finger pressure. This enables batteries to be changed, or removed, easily - without the use of tools. If using Phantom power it is not necessary to remove the battery, as the DI Box senses and uses the higher voltage of the two voltages presented to it. If the Phantom supply should fail the battery will take over instantly, if fitted. Please note that the red LED only illuminates if the Phantom supply is present. This can be useful when setting up as it can be seen from the mixing position, assuring the sound engineer of the connection.
6) Why no earth lift switch?
Earth lift isolation to prevent the formation of hum loops is taken care in the circuitry of our DI Boxes - so no switch is fitted. On some manufactures DI Boxes you cannot use Phantom power with the switch in the lifted (or earth disconnected) position. It is also our experience that anything that can be fiddled with (or adjusted) - will be! On several occasions the sound has been fine at the sound check, but when the concert begins a mystery hum appears on one of the audio feeds due to the spurious operation of an earth lift switch. Better to design it out of the product!
Ingénieur du son depuis 1996 // QFG Studios //
SoundGrid Expert Certified (Waves Audio)
http://www.qfgstudios.com
Nonolepiano
1708
AFicionado·a
Membre depuis 22 ans
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