IMG STAGELINE CALDERA-B10 Active Subwoofer System Instruction Manual

: June 4, 2024
: IMG STAGELINE

Table of Contents

Overview
Safety Notes
Applications
Setting Up and Connecting
Operation
Specifications
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Aktiv -Subwoofer
Active Subwoofer System CALDERA – B10
Bestill-Nr. • Order No. 1000303
INSTRUCTION MANUAL

THE AUDIO COMPANY IMG STAGELINE CALDERA B10 Active Subwoofer System -
fig

Active Subwoofer
These instructions are intended for users with basic knowledge of PA technology. Please read the instructions carefully prior to operation and keep them for later reference.
All control elements described can be found in the figure on page 2 .

Overview

Inputs INPUT A / INPUT B (combined XLR / 6 .3 mm jacks)
Feed-through outputs (XLR and 6 .3 mm jacks) to route the audio signals of INPUT A / INPUT B to active speakers, for example, for mid-high range reproduction
Status LEDs
POWER power indicator
SIGNAL lights up when the signal level is sufficient
CLIP lights up to indicate overload of the amplifier
Output SUB OUT (XLR and 6 .3 mm jack) for an additional active subwoofer or a subwoofer with a separate amplifier
Volume control VOL
Control HI CUT to set the cutoff frequency for the low-pass filter (upper-frequency limit for the subwoofer)
Switch HPF (high-pass filter) for the feedthrough outputs OUTPUT A / OUTPUT B:
OFF output of the whole input signal
ON output of the high frequencies and midrange frequencies only
Switch PHASE to reverse the polarity of the signal
NORM same polarity as the input signal
REV polarity inverted compared to the input signal
IEC connector to connect the subwoofer to a mains socket (230 V/ 50 Hz) via the mains cable provided
ON / OFF switch

Safety Notes

The product corresponds to all relevant directives of the EU and is therefore marked with.
The product corresponds to all relevant UK legislation and is therefore marked with UKCA .
WARNING The product uses dangerous mains voltage. Leave servicing to skilled personnel and do not insert anything into the air vents! Risk of electric shock!

The product is suitable for indoor use only.
Protect it against dripping water, splash water, and high air humidity. The admissible ambient temperature range is 0 – 40 °C.
Do not place any vessels filled with liquid, e . g . drinking glasses, on the product.
The heat produced inside the product must be dissipated by air circulation; never cover the air vents.
Do not use the product and immediately disconnect the mains plug from the socket
1 . if the product or the mains cable is visibly damaged,
2 . if a defect might have occurred after the product was dropped or suffered a similar accident,
3 . if malfunctions occur. Any repairs must be carried out by specialists.
Never pull the mains cable to disconnect the mains plug from the socket, always seize the plug .
For cleaning the product, only use a dry, soft cloth; never use water or chemicals .
No guarantee claims for the product and no liability for any resulting personal damage or material damage will be accepted if the product is not correctly used or not expertly repaired.

If the product is to be put out of operation definitively, dispose of the product in accordance with local regulations.

Applications

This compact active subwoofer is used as a low-frequency addition to existing sound systems for hi-fi applications, home cinema and home recording. It is equipped with a 25 cm (10”) bass speaker. Its amplifier offers a peak output power of 400 W . The subwoofer features an adjustable lowpass filter, volume control and a phase reversal switch. An automatic limiter will protect the speaker against overload. Two line-level inputs are provided, each with a feed-through output. A high-pass filter can be activated for the feed-through outputs allowing connection of sound systems for mid-high range reproduction (satellites) and for full-range reproduction. In addition, there is an output for connecting another active subwoofer.

Setting Up and Connecting

Set up the subwoofer on a flat surface. It is not important to place the subwoofer exactly in the middle between the stereo speakers as it will not be possible to precisely locate the very low frequencies reproduced by the subwoofer. However, do not place the subwoofer too close to walls or in corners; this will distort the frequency response and impede any heat dissipation of the integrated amplifier. Furthermore, do not cover the bass- reflex opening on the back. Before connecting or changing any existing connections, switch off the subwoofer and the devices to be connected.
4.1 Connecting an audio source
Combined XLR / 6 .3 mm jacks INPUT A / INPUT B (1) are available to connect an audio source with line level (e . g . mixer output, preamplifier, line output of a computer) . The signals of the two jacks are mixed to a mono signal for the subwoofer. The jacks are balanced. To connect audio sources with unbalanced signals, use a 2-pole 6 .3 mm plug for the 6 .3 mm jack or a corresponding adapter for the XLR jack. If the outputs of the audio source are already being used by the existing sound system, the sound system can be connected to the feed-through outputs of the subwoofer (chapter 4 .2) .
4.2 Sound system
The existing sound system can be connected to the outputs OUTPUT A / OUTPUT B (2) . Use the switch HPF (7) to define whether the whole signal of the inputs INPUT A / INPUT B (1) (OFF; for full-range speakers) or only the mid-high range part of the signal (ON; for satellite speakers) will be sent to the sound system .
4.3 Additional subwoofer
An additional active subwoofer or the amplifier of an additional subwoofer can be connected via the jacks SUB OUT (4) . The output signal depends on the settings of the controls VOL (5) and HI CUT (6) .
4.4 Power supply
For power supply, use the mains cable provided to connect the IEC connector “230 V~/ 50 Hz” (9) to a mains socket (230 V/ 50 Hz) .

Operation

CAUTION Never adjust the audio system to a very high volume. Permanent high volumes may damage your hearing!
Note: To avoid switching noise, always switch on the audio sources before switching on the subwoofer. After use, switch off the subwoofer before switching off the audio sources.

To prevent the initial volume from being too high, turn the volume control VOL (5) to the left stop (position “−∞”) before switching on for the first time.
Use the ON/OFF switch (10) to switch on the subwoofer. The LED POWER (3) lights up .
Reproduce sound, e . g . music, via the existing sound system, and add the desired low bass part using the control VOL (5) . Only turn up the control so far that the sound reproduced is not distorted.
The LED SIGNAL (3) lights up when the signal level is sufficient. If the LED CLIP (3) lights up, the level is too high, and the signal is distorted. In this case, turn back the control VOL or reduce the output level of the audio source.
Use the control HI CUT (6) to adjust the cutoff frequency of the low-pass filter so that the subwoofer will optimally complement the frequency response of the other speakers . Readjust the volume balance with the control VOL if necessary.
If the speakers are placed at different distances from the listener, phase cancellation may occur (the volume of certain frequencies will be reduced) .
To compensate this effect, use the switch PHASE (8) to reverse the phase of the subwoofer signal.
Test both switch positions to find the position offering the bass reproduction of the highest volume at the listening position. Readjust the volume balance with the control VOL if necessary .

Specifications

System: . . . . . . . . . . . . active subwoofer, bass reflex
Amplifier power
Power rating: . . . . . . 300 W
Peak power: . . . . . . 400 W
Frequency range: . . . . 25 – 180 Hz
Low-pass filter
(HI CUT): . . . . . . . . . . . 90 – 180 Hz, 15 dB / oct .
Speaker
Diameter: . . . . . . . . 25 cm (10”)
Sensitivity: . . . . . . . . 88 dB / W/ m
Max . SPL: . . . . . . . . . . 114 dB
Inputs
Sensitivity: . . . . . . . . 300 mV
Max . input level: . . . 5 .3 V
Impedance: . . . . . . . 11 kΩ
Connection: . . . . . . XLR / 6 .3 mm jack, balanced
Pin configuration: IMG STAGELINE CALDERA B10 Active Subwoofer System -
fig2

Outputs
OUTPUT A / B
Level: . . . . . . . . . . same as INPUT A / B
High-pass filter: . . 200 Hz, 12 dB / oct ., adjustable
Connection: . . . . . XLR and 6 .3 mm jack, balanced
SUB OUT
Rated level: . . . . . 850 mV
Connection: . . . . . XLR and 6 .3 mm jack, balanced
Pin configuration: IMG STAGELINE CALDERA B10 Active Subwoofer System -
fig 1 Power supply: . . . . . . . 230 V/ 50 Hz
Power consumption: . . 560 VA
Ambient temperature: 0 – 40 °C
Cabinet material: . . . . MDF wood
Dimensions
Width: . . . . . . . . . . . 350 mm
Height: . . . . . . . . . . 375 mm
Depth: . . . . . . . . . . . 430 mm
Weight: . . . . . . . . . . . 16 kg
Subject to technical modification.
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INTERNATIONAL GmbH & Co. KG.
No part of this instruction manual may be reproduced in any form or by any means for any commercial use.