Turbosound TXD-081 Quick Start Manual

Models covered by this Quick Start Guide

TXD-081, TXD-121, TXD-151, TXD-252, TXD-12M, TXD-15M, TXD-115, TXD-215, TXD-118, TXD-218.
Thank you for choosing a TURBOSOUND TXD series loudspeaker product for your application. If you would like further
information about this or any other TURBOSOUND product, please contact us. A detailed user manual on this product is
available on our web site at www.turbosound.com

Unpacking the TXD series loudspeaker

After unpacking the unit please check carefully for damage. If damage is found, please notify your supplier at once. You,
the consignee, must instigate any claim. Please retain all packaging in case of future re-shipment.
System Requirements – Passive Models
TXD series loudspeakers, with the exception of the TXD-252 and TXD-
15M, are passive systems, and require only one amplifier channel for
correct operation, the frequency splitting between the LF driver and the
HF driver being accomplished by the internal passive crossover network
built into each enclosure. These models are equipped with Neutrik
Speakon NL4MP connectors for both input and parallel connections.
Pins 2+ and 2- are not used for passive connections. Always observe the
correct polarity as shown.
System Requirements – Bi-amped Models
The TXD-252 and TXD-15M are switchable passive/bi-amp systems,
and when used in bi-amp mode require two amplifier channels and an
external electronic crossover for correct operation. These models are
equipped with a single switchable Neutrik Speakon NL4MD-V-S
connector (in addition to two regular NL4MP connectors for passive
mode), with pins 1+ and 1- being used for the low frequency amplifier
and pins 2+ and 2- for the high frequency amplifier. Always observe the
correct polarity as shown.

Using Passive Loudspeakers with Subwoofers

TXD series subwoofers are equipped with internal passive crossover networks which enable a system of, for example,
TXD-121 and TXD-115 units to be configured together as a full-range system without the need for external electronic
crossovers or additional power amplifiers. The subwoofer's internal crossover filters high frequency signals out of the
subwoofer cabinet to ensure a clean transition.

Amplifier considerations

TXD speaker enclosures should be driven by high quality power amplifiers designed for true professional use. Amplifiers
should be capable of delivering long term broadband power equal to the loudspeaker's program power rating at the
stated nominal impedance. Always operate your power amplifiers at maximum gain for the best headroom and
signal/noise ratio, controlling the overall system volume from the mixing console. The use of under-powered amplifiers
must be avoided as heavily clipped signals can cause permanent loudspeaker damage.
The amplifier's rated r.m.s. continuous power output (20Hz – 20kHz, each channel)
should be equal to the loudspeaker's program power handling at its nominal impedance.

RECOMMENDED AMPLIFIER POWER RATING

Quick Start Guide
TXD series
Passive connections
(Pins 2+ and 2- not connected)
LF -ve
LF +ve
HF + ve
HF - v e
Bi-amp connections
LF - v e
LF + ve
TXD Quick Start Guide - Page - 1