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Yi-SUB loudspeaker

Cardioid dispersion pattern

Connector wiring

d&b Yi-SUB Manual 1.3 en

2.1 Product description

The Yi-SUB is a compact high performance cardioid subwoofer

designed to supplement the d&b Yi-Series cabinets.

The Yi-SUB houses two long excursion neodymium drivers in an

integrated cardioid setup: an 18" driver in a bass-reflex design

facing to the front and a 12" driver in a two chamber bandpass

design radiating to the rear. The arrangement and tuning provide a

cardioid dispersion pattern using a single amplifier channel.

The frequency response extends from 39 Hz to 140/110 Hz.

Cardioid dispersion

Cardioid dispersion avoids unwanted energy behind the system

and greatly reduces the reverberant field at low frequencies

providing highest accuracy in low frequency reproduction. The

subwoofers can be used as stand-alone solutions or in stacked

combinations with a minimum distance of 60 cm (2 ft) between

adjacent cabinets or between the cabinets and a side wall. When

set up in front of walls, the minimum distance to rear walls should

be 30 cm (1 ft).

Yi-Series rigging components and arrays

Cabinets are mechanically connected using the rigging strands on

both sides of the cabinet front and a central strand at the rear of

the cabinet. All necessary rigging components are mounted to the

cabinet and fold out or slide out when needed. The rigging

components are also intended to interconnect and secure Yi-SUB

cabinets in ground stacked applications.

A detailed description of the Yi-Series rigging components is given

in the Yi-Series Rigging manual which is provided with the

corresponding Yi Mounting frames.

A detailed description of planning and designing Yi arrays is given

in the technical information "TI 385 d&b Line array design,

ArrayCalc" which is provided with the Y Flying frame.

The d&b ArrayCalc simulation software can be downloaded from

the d&b website at www.dbaudio.com.

2.2 Connections

The cabinet is fitted with a pair of NL4 M connectors and a two

pole screw terminal block (ST). All four pins of both NL4 M

connectors are wired in parallel. The cabinet uses the pin

assignments 2+/2–. Pins 1+/1– are designated to full range

cabinets.

Pin equivalents of the applicable connector options are listed in the

table below.

NL4 M

n.a.

1–

2–

n.a.

–