Tubebox 500 series tube m ic prea m p Operating Manual V1.
Contents 1 Safety instructions ......................................................................................................... 3 2 Foreword ......................................................................................................................... 4 2.1 Important Notes:....................................................................................................... 4 3 Introduction ............................................................................................
1 Safety instructions CAUTION: Please ensure power to your 500 series power chassis is OFF before installing or removing your 500 series modules. Hot Swapping, (exchanging of 500 series modules with the power on) is NOT recommended. If the power is on whilst exchanging modules, the pins on the modules multipin connector may short and burn the regulator. For this reason, hot swapping of modules is not covered under the SM Pro Audio warranty.
2 Foreword Dear Customer, Thank you for purchasing this SM Pro Audio product. Our Tubebox has been designed as a usable tool for home & professional studios, P.A. rental companies, Schools, Houses of Worship and in many other situations where audio products would be used. With vast experience in the audio industry over a long period of time, and along with valuable suggestions from our customers, our engineers have developed a product that we know you will be satisfied with.
3 Introduction Tubebox is a single-slot 500-series tube microphone preamp with pristine audio output. It features a Class A tube preamplifier circuit, switchable phantom power, phase invert, selectable -20dB pad, and a super fast in-line optical compressor. The front panel includes a TRS microphone input. The interchangeable 12AX7 preamp tube allows you to experiment with a variety of modern and vintage tubes to customize the Tubebox’s sound and performance to your taste.
4 Audio Connections The Tube Box features a 1/4” (6.5mm) TRS connector on the front panel for connection of a Balanced Microphone or unbalanced instrument. All other connections are done thru the back panel multipin connector. Note: The Tube Box accepts mic or line level input signals. Do not connect your power amplifier outputs to the Tube Box inputs! 5 Preamp control Input controls for the preamp are: Rotary INPUT GAIN (labelled 0 to 10), PAD(-20dB) 48V Phantom power switch.
Output level The output level (labelled 0 to 10) is a rotary control that simply controls the output level of the TUBE BOX. 7.1 Phase reversal switch A phase reverse switch is available for reversing the phase of the signal by 180 degrees. This can be desired in situations such as recording a snare drum from above and below the drum simultaneously.
9 Let’s play The Tube Box’s opamps are in DIP8 sockets, this simply means that users can interchange between different types of opamps to achieve different results, and we would be happy if you report the results to us as well. Please note that any damage caused in this process cannot be covered under warranty. 9.1 Line Input Level On the main board, right next to the Tube, you will find a Blue square colored trimpot.
10 Specs Audio Inputs Mic input connector Impedance Mic input gain Phase reversal Phantom power Instrument input con. Instrument input gain TRS balance 3k Ohms 10dB to 60dB switchable + 48V, switchable 1/4“ jack unbalanced (or XLR from back panel) 0dB to 45dB Audio Outputs Connectors Type XLR & 1/4“ jack (back panel) Balanced & Unbalanced Amplitube Frequency Response Line in 10Hz to 40kHz within 1dB Mic in 10Hz to 40kHz within 2.
11 Warranty 11.1 Warranty Registration To be protected by this warranty, please register your purchase using our online registration form at http://www.smproaudio.com/index.php/en/service/register 11.2 Warranty SM ProAudio warrants the mechanical and electronic components of this product to be free of defects in material and workmanship for a period of three (3) years from the original date of purchase, in accordance with the warranty regulations described below.
Connection or operation of the unit in any way that does not comply with the technical or safety regulations applicable in the country where the product is used. Damages/defects that are caused by any other condition beyond the control of SM Pro Audio. Any repair carried out by unauthorized personnel will void the warranty. Products which do not meet the terms of this warranty will be repaired exclusively at the buyer‘s expense. SM Pro Audio will inform the buyer of any such circumstance.
FCC and CE Regulation This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Caution: Any changes or modifications in construction of this device with are not expressly approved by the party responsible for compliance, could void the user's authority to operate equipment.
