Klotz DX10
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Manufacturer Information
Klotz
https://www.klotz-ais.fr
info@klotz-ais.com
------------------------
Safety manager:
KLOTZ AIS GmbH
Email: info@klotz-ais.com
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An Essential Passive DI in a Modern Audio Chain
In a stage or studio setup, the direct box is a central tool to ensure reliable connections between instruments and sound systems. The DX10 fits this logic with a simple and robust approach: a passive DI designed to work immediately without power constraints. This "plug and play" philosophy is especially appreciated on stages, during rehearsals and performances, where quick setup and consistent signal quality are paramount.
Its design also emphasizes quality of transformation and isolation, thanks to a hand-wired transformer protected by permalloy shielding, which helps reduce sensitivity to interference and maintain a usable signal over long cable runs.
Who is the DX10 for and when to use it?
The DX10 is intended for musicians, technicians, and content creators who need to send an unbalanced instrument or line-level signal to a mic or line input of a console, stage snake, or interface, while reducing the risk of hum and unwanted noise. It is particularly suitable for setups where cables must cover long distances or where the electrical environment is busy (lighting, power strips, backline power supplies, computers).
It is ideal for sources such as a guitar or bass via an appropriate output, keyboards and expanders, or certain audio outputs of equipment with unbalanced signals. By converting to a balanced XLR output, the DX10 facilitates integration into a standard sound reinforcement chain and allows for smoother processing at the console.
Operation and Advantages: Balancing, Impedance Matching, and Attenuation
Why balance a signal?
A DI primarily serves to convert a high-impedance unbalanced signal into a low-impedance balanced signal. Practically, this helps carry the signal over longer distances with less susceptibility to interference, and sends it cleanly to a mixing console for equalization, dynamics, and routing.
Passive DI: simplicity, reliability, efficiency
Unlike an active model, a passive DI like the DX10 requires no power supply. This choice is relevant when you want a reliable, ready-to-use box that is easy to deploy on stage. The transformer plays a key role here: it ensures the conversion and contributes to isolation, with permalloy shielding designed to improve protection against RF interference.
Level handling: coping with strong sources
The DX10 specifies different maximum input levels depending on the attenuation setting. This allows adapting the DI to various sources, from moderate signals to higher levels, while maintaining a usable output to the console. This margin is especially useful when switching between instruments, line outputs, or equipment with higher output levels.
Technical specifications
| Rackable | No |
| Category | audio converter |
| Type | Box |
| Chassis | all-metal (stainless steel) |
| Dimensions (L x W x H) | 103 x 75 x 49 mm |
| Weight | 500 g |
| Unbalanced input | 6.35 mm Jack |
| Unbalanced output | 6.35 mm Jack |
| Balanced output | 3-pin male XLR |
| Max input level, attenuation OFF | +10 dBu (2.5 V) / 20 k ohms |
| Max input level, attenuation 20 dB | +30 dBu (25 V) / 40 k ohms |
| Max output level | -10 dBu (250 mV) / 200 ohms |
| Frequency response | 10 Hz to 30 kHz (+/-0.3 dB) |
| Distortion factor | less than 0.1% |
Questions frequently asked
Does the Klotz DX10 work without power?
This passive DI requires no power and relies on a hand-wired transformer, shielded with permalloy.
Can a keyboard or bass be connected to this DI?
The unbalanced 6.35 mm jack input allows connection of unbalanced sources such as keyboards, rack modules, or instruments with a suitable output. The male 3-pin XLR output then sends a balanced signal to a mixer or snake.
What connectors are available on the DX10?
The unit features an unbalanced 6.35 mm jack input, an unbalanced 6.35 mm jack output, and a balanced male XLR output. This XLR output enables the signal to be transmitted over a balanced connection.
Does the attenuator accept a hot line-level output?
With attenuation off, the maximum input level is +10 dBu (2.5 V) at 20 kOhms impedance. On the 20 dB attenuation setting, it handles +30 dBu (25 V) at 40 kOhms impedance. This setting adapts the box for higher level sources.
Is the unit stage-friendly?
Its all-metal stainless steel chassis measures 103 x 75 x 49 mm and weighs 500 g.
