PMC TBS-AII, DB1S-AII, IB1S-A User Manual

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TBS-AII
DB1S-AII
IB1S-A

Digital Activated, ATL™ professional monitors

Thank you for purchasing a PMC handcrafted product. Please take
a moment to read the following guidelines. These hints & tips will
guarantee the very best results.

1. Read these instructions and keep them in a safe place for

further reference.

2. Heed all electrical safety warnings, including any on the

loudspeakers themselves.

3. Do not use the loudspeaker near water or attempt to use if

wet.

4. Clean only with a dry, lint-free, cloth.

5. Do not install near any heat sources such as radiators, ovens

or other equipment that produce excessive heat.

6. High volume audio signals, however short their duration, have

the potential to cause hearing damage. Use care when
setting the system volume level to ensure playback sound
pressure levels remain within comfortable limits.

7. Ensure the unit is rated for the local voltage before

proceeding.

8. Refer all servicing to qualified service personnel. Servicing is

required when the apparatus has been damaged in any way
or exhibits a distinct or sudden change of operation or
performance.

Product Support:

For product support, accessories or servicing advice,
please contact a PMC authorised dealer/distributor.

See:
www.pmc-speakers.com/distribution/distribution.php

Company Details:

PMC Limited,
43-45, Crawley Green Road,
Luton.
LU2 0AA.
United Kingdom.

Company Reg. Number: 3328009

T [phone]
F [phone]

E-mail: [e-mail]
Web: http://www.pmc-speakers.com/

© 2010 PMC. All rights reserved.

This document should not be construed as a commitment
on the part of PMC. The information it contains is subject to
change without notice. PMC assumes no responsibility for

errors that may appear within this document.

Our attention to Detail

All PMC loudspeakers are hand-built in the U.K. using individual components that are matched across loudspeaker pairs.
The value of each component is recorded and checked against our strict tolerances, and then assembled using silver
loaded solder. Each and every pair of completed loudspeakers then undergoes a set of objective and subjective
measurements – frequency response sweeps ensure that the design meets our exacting performance criteria, and then
listening tests are conducted against a reference design using a wide variety of material, which varies from a benchmark
speech test to classical music, pop and rock.

PMC’s unprecedented and unrivalled attention to detail means that the product we design is the product you receive.

Connections

N.B. To avoid potential damage please ensure that the unit is turned off before making or breaking any connections.

The rear panel of the TBS-AII, DB1S-AII, and IB1S-A holds two connectors: Audio and Mains Power input.

Audio

The audio input connector is a balanced 3 pin XLR, to be wired as follows:

Pin 1. Ground (screen)
Pin 2. Signal +
Pin 3. Signal –

If the monitor is to be used in an unbalanced system, then pins 1 and 3 of the input XLR should be soldered together at
the monitor end of the input audio cable.

Mains Power

A Single IEC-type mains connector is provided appropriate for the local mains power source and can be found in the
cardboard housing at the bottom corner of the box.

N.B. This unit is earthed via the standard IEC mains connector. This earth must not be disconnected.

Level control

When connecting, ensure the signal source is set to a low output. The level control when rotated fully clockwise it will
achieve full sensitivity.

N.B. High volume audio signals, however short their duration, has the potential to cause hearing damage.

Positioning

Because of their unique ATL (Advanced Transmission Line) enclosures, wide dispersion pattern, low harmonic distortion
and smooth roll-off, PMC monitors are more forgiving of difficult room conditions and placement constraints than
conventional designs. However, we encourage you to spend some time experimenting in your own room in o rder to
obtain the best results, remembering that even small changes in location can have a significant influence upon system
performance, especially in the low frequency region.

The following guidelines are suggestions for the initial location for your monitors. Fine-tuning of their positioning can start
from here.

Place the TBS-AII, DB1S-AII or IB1S-A so that the front face is forward or level with any the front face of any other

monitor or screen. This will ensure the most convincing image to be produced.

Ensure that stereo pairs of loudspeakers are equidistant from the listening position.
Position a front left/right pair and centre channel loudspeaker (if applicable) at the same height. The acoustic

centre is directly between the HF (Tweeter) unit and LF (Woofer) on the TB & DB and at the centre of the mid range
dome on the IB1S-A. This should be as close as possible to the level of the listener‟s ear at the primary position. For
the DB & TB, the addition of PMC’s Tube104 speaker stand offers the correct height and supplies the perfect

platform for the monitor to operate, and for the IB1S-A, PMC’s Studio frame stand.

Create an imaginary equilateral triangle between the speakers and your listening position. As a general rule, the

soundstage width will diminish if the loudspeakers are any closer together and become disjointed if they are further
apart, but we encourage experimentation within your own room.

Loudspeakers can be „toed-in‟ to improve stereo left/right imaging, so that the axis of each loudspeaker crosses

approximately 50cm behind the primary listening position.