Getting started, Connections, Things to remember – Tapco pmn User Manual

Page 4

Getting Started

The following steps will help you set up your ampliﬁer, and get the

levels just right.

SETTINGS:

1. Be sure the ampliﬁer’s POWER switch is oﬀ.
2. Turn down both Level controls.
3. On the rear panel, set the SUBSONIC FILTER

switch OFF and the CLIP LIMIT switch ON.

4. Determine which AMP MODE is best for your

application:

STEREO mode is the typical setup for amplifying

stereo signals. INPUT 1 is routed to CHANNEL
1 output, and INPUT 2 is routed to CHANNEL 2
output.

MONO mode is used for sending a mono signal

to both outputs, with separately adjustable level
controls. INPUT 1 is used in MONO mode (leave
INPUT 2 disconnected).

BRIDGE mode uses both outputs to double

the power to one speaker (or set of speakers).
INPUT 1 is used in BRIDGE mode (leave INPUT 2
disconnected and the B Level control turned down).

NOTE: 4 ohms is the minimum speaker impedance

you should connect to the ampliﬁer in BRIDGE
mode. See “Do the Math” in Appendix B for
information on calculating speaker impedances.

5. Set the AMP MODE switch according to your

application.

CONNECTIONS:

1. Using balanced cables, make connections from

your mixer (or other signal source) MAIN OUT to
your ampliﬁer’s INPUTs.

2. In STEREO mode, connect the cables from your

signal source to the ampliﬁer’s INPUT jacks,
either XLR or 1/4” TRS.

• The XLR and TRS inputs for each channel are

wired in parallel.

• The balanced XLR inputs are wired as follows:
Pin 1 = shield (ground)

Pin 2 = hot (+)
Pin 3 = cold (–)

• The 1/4” TRS inputs are wired as follows:
Tip = hot (+)

Ring = cold (–)
Sleeve = shield (ground)

3. In MONO mode and BRIDGE mode, connect

one cable from the input source to INPUT 1, and
connect nothing to INPUT 2.

4. In STEREO and MONO modes, connect speaker

cables to the SPEAKER OUTPUTS, either the
binding posts or the Speakon® connectors.

• The binding post connectors are wired as

follows:
red = hot (+ speaker terminal)
black = cold (– speaker terminal)
• The Speakon connectors are wired as follows:
1+ = hot (+ speaker terminal)
1– = cold (– speaker terminal).

5. In BRIDGE mode, if using the binding post

outputs:
• CHANNEL 1 SPEAKER OUTPUT red post = hot
(+ speaker terminal)
• CHANNEL 2 SPEAKER OUTPUT red post =
cold (– speaker terminal)
Do not use the black terminals.

If using a Speakon connector, connect the

Speakon to the center BRIDGED connector.

• The BRIDGED Speakon connector is wired as

follows:
1+ = hot (+ speaker terminal)
2+ = cold (– speaker terminal).

6. Plug all the sound system components into

suitable AC outlets, properly grounded and
capable of delivering adequate current.

7. Make sure your signal source is powered up and

delivering signal to the amp.

8. Turn the power ampliﬁer’s switch on. Verify that

the POWER LED lights.

9. Slowly turn up both Level controls on the

ampliﬁer. You should hear music and see the
SIG LEDs ﬂashing. If the OL (Overload) LEDs
are ﬂashing, turn down either the Level controls
on the amp or the source signal’s output level
controls (i.e., master faders), until the OL LEDs
either blink occasionally or not at all.

10. For quieter listening, it is preferable to adjust

the amp’s Level controls rather than the source
signal’s output level (unless you have the source’s
control all the way up!).

Things To Remember:

• Never plug ampliﬁer outputs

into anything except speakers
(unless you have an outboard box
speciﬁcally designed to handle
speaker-level signals).