Speaker Connections - YORKVILLE DJM806 Manuel De L'utilisateur

SPEAKER CONNECTIONS

Two 1/4" jacks and one Speakon™ connector are in parallel with each amp-
channel output stage. This allows the use of speaker cables equipped with either
type of connector. For full-power applications we recommend 14-gauge cables
equipped with the Speakon™ connectors. This will reduce risk of resistance
buildup. The Speakon™ system, developed in recent years by Neutrik in
Switzerland, features block-style contacts capable of handling large amounts of
power and the connectors lock down to prevent accidental kick-outs.
Connect one or two 8
Ohm speakers or one
(only) 4 Ohm speaker to
each channel. When
connecting the
Speakon's™, push them
in firmly. Push the tab and
pull to disconnect.
User tip: To connect two (8 Ohm) speakers to one or both of the DJM806's
powered output channels via the Speakon™ connectors, run a single Speakon™ -
equipped cable, e.g. Yorkville model SP2-25SS or SP2-50SS with Speakons™ at
both ends (most higher-powered speaker enclosures now feature Speakons™ as
well) from the DJM806 to one of the enclosures. Now run a second cable from one
cabinet to the next via their dual, parallel inputs.
POWER AMPLIFIER PROTECTION
The DJM806's power amplifier is protected from damage due to open, shorted or
excessively low speaker loads. It will continue to run into a low (less than 4 Ohms)
overall speaker impedance or even a total short-circuit for a brief time, however the
amplifier's defense system will be activated. First, the built-in limiter will reduce
output power levels and the fan speed may increase. Then, if the condition
worsens, a thermal protection circuit will shut the power amplifier down. When
this happens, check your system for restricted air intake/exhaust at the DJM806.
Also check for shorted cables or connectors and/or reduce the number of speakers
being driven. In a few minutes when it has had a chance to cool down, power amp
function will resume.
User tip:
a) If the power amplifier shuts down as above, the mixer section will continue to
function. This means that, if the DJM806's power amp fails to come back on
(unlikely) and you have a spare power amplifier available, you can connect it
to the DJM806 via the MAIN OUT connectors.
b) Because the amplifier is also protected against open-circuit conditions, you
may use the DJM806 without any speakers connected, for example if you
wanted to do some recording.
The DJM806 power amplifier also features speaker protection in case of DC-offset.
This is a very unlikely occurrence given the amp's inherently stable design, but
should it happen, the output power is instantly shorted to ground and the speakers
will be protected. The AC mains breaker on the back panel will blow in response to
this condition (among others). If your breaker open more than once in a short space
of time and the problem does not appear to be AC overload (see below), switch the
power off and take your DJM806 to a Yorkville dealer for service.
AC POWER CIRCUIT-BREAKER
Located on the back panel near the SPEAKER connectors, this circuit-breaker's
(reset) main function is to shut the DJM806 down completely in case of an AC
power overload. If, for example, the unit were accidentally connected to a high-
voltage power outlet, this breaker would open as soon as the DJM806 POWER
switch was flipped on. If this breaker opens immediately, try plugging the DJM806
into another power outlet. Also, see above regarding DC-offset speaker protection.