Radial Engineering Trim-Two User's Guide

TRIM-TWO useR guIde
PAssIVe sTeReO dIReCT BOX
AdJusTABLe INPuT TRIM

Radial Engineering Ltd.
1588 Kebet Way, Port Coquitlam BC V3C 5M5

Tel: [phone] • Fax: [phone] • Email: [e-mail]

TRIM-TWO™ sTeReO dIReCT BOX
useR guIde

Introduction ...................................................................................... 1

Features .......................................................................................... 2

Overview.......................................................................................... 3

Making Connections ........................................................................ 4

Controls ........................................................................................... 5

Applications ..................................................................................6-7

Optional Mounting Accessories ....................................................... 8

Specications .................................................................................. 9

Block Diagram ............................................................................... 10

Warranty ......................................................................... Back Cover

Thank you for purchasing the Radial Trim-Two. This is without a doubt one of the most useful direct boxes that we have
ever produced and is sure to give you years of enjoyment.

As with all new products, it is best that you take a few minutes to read through this short manual to review the many fea-

tures that are built in. If you nd yourself wondering about something, please take a moment to view the Trim-Two FAQ

page on our web site. This is where we post the latest updates and questions from users. If afterwards you feel you are still
in need of an answer, feel free to send us a note at [e-mail] and we will do our very best to reply in short order.

Now get ready to enjoy the advantages of having a volume control at your ngertips.

Radial Engineering Ltd. Trim-Two™ Stereo Direct Box User Guide

1

FEATURES

1. ¼” INPUTS: Left and right inputs ideally suited for stereo key­boards or drum machines, wired in parallel with the RCA and
mini 3.5 TRS connector.

2. RCA INPUTS: Left and right inputs provide an easy connection
from a CD player or other -10dB consumer audio device.

3. 3.5mm TRS INPUT: Standard mini TRS stereo input for connect­ing a laptop, tablet or iPhone to the Trim-Two.

4. LEVEL: Used to set the input level going into the Trim-2. Elimi­nates the need for a typical PAD switch.

5. MONO SUM: Side access set & forget switch sums stereo sig­nals to mono at both XLR outputs.

6. BOOKEND DESIGN: Creates protective zone around the con­nectors and switches for added durability.

7. XLR OUT: Left and right balanced, low-Z mic-level output. Wired to
AES standard pin-1 ground, pin-2 hot (+) and pin-3 cold (-).

8. GROUND LIFT: Lifts pin-1 at both XLR outputs to help eliminate
hum and buzz caused by ground loops.

9. NO SLIP PAD: Provides electrical & mechanical isolation and
keeps Trim-Two from sliding around.

10. 14:GAUGE STEEL: I-Beam construction prevents circuit board
from being torqued which could lead to part failure. Durable

powder-coat  nish keeps your Trim-Two looking great for years.

21 3 4 5

6 7 8 9 10

Radial Engineering Ltd. Trim-Two™ Stereo Direct Box User Guide

2

OVERVIEW

The Trim-Two is passive stereo direct box that has been designed from the ground up to be super easy to use. But un­like other DI boxes, the Trim-Two comes with a level control that lets you adjust the volume by simply reaching over and
twisting a knob. The reason that the Trim-Two can be used this way is that it is intended to be used with buffered or active
sources. Examples include keyboards, sound modules, DJ mixers, laptop computers or tablets. It is not designed for use
with an old Fender bass as the transformers inside that do the balancing are not optimized for passive instruments.

It is important to note that the Trim-Two is a unity gain device. What this means is that when the volume control is set to
maximum, it will produce about the same output level as the source instrument coming in - minus a slight bit due to the
passive nature of transformers. So if you have a loud source such as a line level output from a DJ mixer, you would con­nect the output from the Trim-Two to the line level input on your mixer.

Since the Trim-Two is passive, it does not require any power to work. You simply connect your source to the Trim-Two and
the outputs to the PA system, and you are set to go.

Typical connection using laptop as sound source

Balanced Out

USB

Input

PC Sound Source

Radial Engineering Ltd. Trim-Two™ Stereo Direct Box User Guide

3

PA System