Power Output; Bridge Mode - YORKVILLE AP2020 Owner's Manual

OUTPUT CONNECTIONS
The AP2020 AP2020 has 5–way binding posts and AP2020 AP2020
Neutrik four contact Speakon™ connectors for
output speaker connections. Connection to the
binding posts can either be made with a forked
lug on the post's neck or banana plug inserted
into the end of the post.
There are three Speakon™ connectors, one for
each channel output and a third for bridge/bi-amp
connections. All three connectors are connected
to the amplifier's outputs whether the amplifier is
in stereo mono or bridge modes. Connection
configurations are labeled on the back panel.
Each Speakon™ output connector (output A,
output B) is wired in parallel with it's respective

POWER OUTPUT

One Channel Driven
Load
(OHMS)
8
4
2
Both Channels Driven
Load
(OHMS)
8
4
2

Bridge Mode

Load
(OHMS)
8
4
2
All values are in WATTS. Measurements were made at the 0.1% distortion point. Some CONTINUOUS AVERAGE
POWER measurements required line currents greater than 15 Amps. The amplifier under test was plugged into an
IDEAL POWER LINE consisting of a REGULATED 120 VAC RMS 60 Hz pure sine wave. Ordinary AC "wall outlet"
lines will always exhibit varying and unpredictable amounts of sag. To produce objectively verifiable and accurate
specifications these unknown factors must be eliminated by using an ideal AC line. When using an ordinary
electrical outlet, it will usually be possible to get 1200 Watts when the AP2020
measurements use a 10mS burst at 1KHz with a 1/8 second pause between bursts. The 1KHz burst represents
the maximum possible sine wave output power.
IMPEDANCE MODE SWITCH
The AP2020 AP2020 comes factory–configured to AP2020 AP2020
deliver it's maximum power into a 2–Ohm load.
However, it is possible to switch your AP2020
deviver it's maximum power into 4–Ohms. The
switch is located on the rear panel above the line
cord. To prevent damage to the amplifier's
circuitry ONLY switch modes when the
amplifier's power switch is OFF! This feature is
intended to be used where the load is known.
1 KHz Cont. 1 KHz Burst
Avg.
2 Ohm Mode 2 Ohm Mode
330 350
550 650
850 1050
1 KHz Cont. 1 KHz Burst
Avg.
2 Ohm Mode 2 Ohm Mode
250 350
460 650
650 1050
1 KHz Cont. 1 KHz Burst
Avg.
2 Ohm Mode 2 Ohm Mode
950 1200
1300 2100
N/A N/A
AP2020 AP2020 AP2020 to
binding posts for two channel two cable
connections (figure 1).
The Bridge/Bi–amp connector contains both
channels on one connector. This is convenient
when connecting one speaker to the amplifier in
bridge mode where the speaker is connected
across the positives of each amplifier output.
Configure the mode switch for bridge and
connect the speaker to pins +1 and +2 of the
bridge/bi-amp Speakon (figure 3).
To connect a bi-amp speaker, configure the
amplifier for stereo and connect to the bridge/bi-
amp connector but use all four terminals in the
Speakon connector which will connect A and B
outputs separately to the speaker (figure 2).
1 KHz Cont.
Avg.
4 Ohm Mode
425
725
N/A
1 KHz Cont.
Avg.
4 Ohm Mode
400
615
N/A
1 KHz Cont.
Avg.
4 Ohm Mode
1250
N/A
N/A
AP2020 is bridged into 4 ohms. The BURST
AP2020 AP2020
PLEASE NOTE: In the 4–Ohm configuration, the
minimum load per channel is 4–Ohms and the
minimum BRIDGE load is 8–Ohms. Attempting to
operate into 2–Ohm loads while in the 4–Ohms
configuration will cause the amplifier to go into
current limit, thermal limit, or both. The power
specification chart in this manual shows the
powers that can be achieved for various
configurations and loads.
4
1 KHz Burst
4 Ohm Mode
475
870
N/A
1 KHz Burst
4 Ohm Mode
450
800
N/A
1 KHz Burst
4 Ohm Mode
1600
N/A
N/A