| Content | The Radial ProDI is a passive direct box that combines exceptional audio performance with solid dependable construction, making it the ideal general duty direct box for stage and studio. The heart of the ProDI is a custom wound Radial transformer. It features an exceptionally high 140kΩ input impedance to reduce loading while enabling the ProDI to handle extreme signal levels at all frequencies without distortion. This is further improved upon with an internal mu-metal shield to protect against electromagnetic fields that can cause unshielded transformers to distort.
This compact direct box begins with 14-gauge steel I-beam skeleton for added rigidity and Radial's unique book-end design that creates a protective zone around switches and connectors. Glass filled nylon connectors and high cycle switches combine with the mil-spec PCB and internal RF filtering to provide durability and noise-free performance. A full bottom no-slip pad provides both mechanical isolation and electrical insulation to further protect against the rigors of professional touring.
The ProDI is ideally suited for instruments such as bass guitar, active acoustics, keyboards and just about anything else! When you consider all of the features and the affordable price tag, it is no wonder the Radial ProDI has become one of the most popular direct boxes ever made. The Radial ProDI… Spectacular performance at a price that anyone can afford!
Features:
- Compact passive direct box for stage and studio
- Able to handle huge transients without distortion
- Transformer isolation eliminates noisy ground loops
- Plug and play easy to use feature set - on stage or in the studio
| With added functionality and enhanced audio performance, the AR-133 has been
designed to be more affordable for musicians, studios and PA companies.
The unit includes phantom power and battery supplies as standard. Should the
phantom power from the console fail or be accidentally switched off, the AR-133
automatically switches over to the internal 9V battery providing uninterrupted use.
The unit is housed in a rugged aluminium extrusion case, with robust polyurethane
end-cheeks which give the AR-133 a very distinctive look.
Input connectors are both 1/4" jack sockets and an XLR socket, the latter meaning
that the AR-133 can be used to convert unbalanced signals to a balanced output on
XLRs throughout.
The arched case allows cables to run back underneath the unit from the end for neat
cable management.
Input attenuation is 0, -20 or -40dB, making the box suitable for instrument, line or
amplifier levels on inputs. On the output side, a ground-lift switch is provided for quick
solutions to ground-loop problems.
The AR-133 uses an enhanced version of the same audio path as the AR-116, now
regarded by many people as a reference standard. The sound quality is legendary,
particularly on acoustic and bass guitars.
Numerous applications can be satisfied by the AR-133. For example, as well as the
traditional guitar use, the AR-133 can be used with keyboards, DJ consoles, amplifier
outputs, and other electronic sources.An additional bonus is the ability to use the AR-133
as an active balancing device.
Input Section
Input Impedance 1M Ohm (pad at 0dB)
47k Ohm (pad at -20dB)
47k Ohm (pad at -40dB)
Max Input Level +9dBu (pad at 0dB)
+29dBu (pad at -20dB)
+49dBu (pad at -40dB)
Connectors Two Parallel 1/4" jack connectors and a parallel
XLR connector (unbalanced)
Jack: Tip Hot (+ve)
Sleeve Ground
XLR: Pin 2 Hot (+ve)
Pin 1 & 3 Ground
Output Section
Output Transformer Balanced
Max. Output Level +8dBu into 600 Ohms or greater
Connector XLR3-32 or equivalent
System Performance
Distortion (THD) < 0.005% at 1khz, 0dbu output
Noise < -105db unweighted, 22hz-22khz, rms*
Frequency Response 30Hz to 20kHz, +0dB/-1dB
General
Main/Standby battery 9 volt PP3 type, preferably alkaline.
Current drain on phantom - less than 7.5mA
on battery - less than 2mA.
Phantom Power +20 volts DC to +48 volts DC
Weight 650 gms, excluding batteries.
Overall Dimensions 59 mm x 124 mm x 143 mm
(2.3" x 4.9" x 5.6“) |
Passive DI box especially designed for guitars.
The PDI09 can be connected between an effect device or amplifier and the mixing console. The PDI09 is not suitable for direct connection to a guitar. Integrated filter circuits simulate the authentic "speaker" sound. Tone can be varied between "Mellow“, "Normal“, or "Bright“.
Technical specifications:
- Input: 6.3 mm jack with parallel "THRU" socket
- Output: male XLR transformer balanced
- Attenuator: (Level switch) 0 dB for line signals, -15 dB for small amps up to 10 w, 30 dB for large amps up to 200 w
- No battery necessary
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DOD AC 275 Active Direct Box with Switchable Ground Lift and Attenuator-2nd Hand- The AC 275 is an active, phantom powered direct box. Unlike a passive DI where the frequency response of the signal can be altered depending on the connected impedance, an active DI buffers the input signal with an amplifier. This assures that the sound source will reach the mixer balanced and noise-free. Housed in a cast alloy chassis, the AC 275 supplies two, high impedance, unbalanced 1/4" jacks and one low impedance balanced XLR jack. It operates with battery or phantom power.
Key Features
| ?![]() | Active direct box | ?![]() | Allows a hi impedance unbalanced source to directly feed a low impedance balanced input | ?![]() | Flat frequency response | ?![]() | Connects guitar pickups, microphones or electric instruments to a recording or P.A. console without audio quality loss | ?![]() | Internal pad for speaker level input | ?![]() | Operates with battery or phantom power | ?![]() | Ground lift switch eliminates typical ground loop problems | ?![]() | Rugged, road-proof cast alloy chassis |
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Active DI-Box SM-60
The electronic Direct-Injection Box SM-60 allows direct connection of electronic
music instruments such as keyboards, synthesizers, electric and electronic pianos,
etc. with mixing consoles in PA-systems and in recording studios.
The SM-6 is designed for applications, where a passive DI-Box does not perfom
satisfactorily, i.e., where the output level of a passive DI-Box is too low for the microphone
input section of the mixing desk.
Because the input impedance of the SM-6 is above 5 MOhm, instrument outputs are
not loaded or in any other way adversely affected. The voltage ratio from input to output
is 1: 1 and is always sufficient for connection with any microphone input. Input connectors
are 1/4" phone jacks, output connector is a Switchcraft D3M; output is 600 Ohms,
transformer balanced. The output level may in certain cases overload microphone inputs -
the line input section of the mixing console must then be used for connecting the SM-6.
The unit operates with a 9 V battery or phantom powering from 24 to 48 volts.
Technical Data
input impedance > 5 MOhm
max. input impedance + 6 dBu, 1,55V
ouptut impedance 600 Ohm
frequency response 20 ... 20000 Hz, ± 0,2 dB
gain 1 : 1
THD < 1 % at 30 Hz
< 0,7 % bei 40 Hz
powering 9-V battery (IEC 6LF22) or
phantom power 24 ... 48 V.
inputs two 1/4" phone jacks , unbalanced
(one being used as output to instruments amp)
outputs XLR, balanced
pin 1 = ground, pin 2 = hot, pin 3 = cold
case aluminium die-cast
weight 240 g
dimensions 113 x 71 x 37 mm |
Inline Transformer IA-2
The model IA-2 line matching transformers !S designed to properly match a low impedance
signal to a low impedance source. The advantage of "ground lift" switching allows to optmize
hum problems.
Technical Data
Frequency response 20 Hz - 20 KHz + 1 dB
Impedance 600 : 600 Ohm
THD K3 50 Hz = 0.5 %
Level < + 6 dBm
Weight 100 g
Dimensions diameter 17 mm, lenght 115 mm
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