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PDS-500T / PDS-250T
class-D / RACK-MOUNT sub-woofer amplifier

PDS-500T / PDS-250T are rack-mount type power amplifiers of mono channel for driving subwoofer speaker in an audio system; With the rich functions built in these amplifiers, user is capable to do fine tune to the audio system for optimum bass performance and system balance.

The PDS-500T and the PDS-250T have identical functions and features, other than the maximum output power. Both models have toroidal transformer and linear power supply which is in advantage of long persistence in terms of storing and delivering power.
Nevertheless, the toroid allows low-profile of 1U and low weight for the PDS-500T and 250T.

 

Incorporating the latest DSP technology, the CPU built inside the PDS-500T / PDS-250T provides capability of adjusting and storing the amplifier’s working parameters through a notebook computer (via the USB aperture) or with the supplied remote control unit during installation and acoustic refinement.
(see table below for DSP functions)

feature highlight

- 500w(250w), mono channel
- class-D digital format
- CPU-control DSP
- switching power supply
- remote setup and control
- power saving options
– rack-mount / 1U low-profile
 

mode selection

subwoofer or LFE

volume / mute

set the sound level or defeat it

subsonic frequency

low-frequency filter setting (high-pass)

crossover

set up slope / frequency of crossover (low-pass)

phase / delay

speaker (subwoofer) location compensation

equalizer(6 presets)

tuning frequency response for refining acoustic result

night mode

limited sound level for listening in night time

power-saving selection

audio-trigger on-off selection / buffer-time setting

external on-off trigger

enable / disable (global on-off via external DC-12V)

memory of functions

keep all the settings in the built-in CPU (up to 3 sets)

To assist the setup, particularly when using the remote handset, a LCM panel is provided to give feedback of the unit’s status during browsing functions, doing controls and making selections.

The PDS-500T / PDS-250T are equipped with RCA jacks (the most commonly-used connector) and XLR terminals (for higher immunity and less noise).

XLR connector is rigid and provides much higher standard of S/N ratio when a long signal cable between source and the subwoofer speaker is needed (for instance, outdoor or in a ballroom), compared to the other types of signal connectivity.

Function

power on-off control

master switch

yes

remote control

DC12V / IR handset / audio-trigger

power input

voltage selection

manual switch

cord

detachable (IEC type)

audio terminal

input

RCA (line) / XLR (balance)

output

RCA (line) / XLR (balance)

speaker terminal

Binding post

control tool

remote handset

IR (handset included)

computer

USB / type A (cable included)

front panel

Rotary wheel with confirm button

display

power

LED

function

LCM

Specification

 

PDS-500T

PDS-250T

max Power

THD @ 1%

W

500

250

THD+N

output @ 10W

%

< 0.2

< 0.2

input sensitivity

Line / XLR; volume @ max

mV

200

200

frequency response

LFE mode

Hz

2K

2K

subwoofer mode

Hz

Variable
(default: 80Hz)

Variable
(default: 80Hz)

crossover filter

range

Hz

40~160

40~160

slope

dB

12 ~ 36

12 ~ 36

subsonic filter

range

Hz

16 ~ 40

16 ~ 40

slope

dB

24

24

phase adjustment

degree

0 ~ 315° (by 45°)

0 ~ 315° (by 45°)

delay time

ms

0 ~ 30

0 ~ 30

S/N ratio

@ rated power

dB

> 100

> 96

auto-off time

min

5 ~ 30

5 ~ 30

auto-on level

mV

3~5

3~5

measurement

dimension (H x W)

mm

 

 

weight

kg / lb

 

 

operational AC range

(manual setting)

V

100~120

100~120

200~240

200~240

power consumption

standby, no-signal

W

0.5

0.5

power-on, no signal

W

20

20

rated power

W

860

385






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