A.    Introduction

HD-1504BD is 500Wrms/4ohm subwoofer plate amplifier. Due to diital amplifier, switching power supply and with DSP function design, it’s high efficiency, high stability & lighter weight compared to traditional analog amplifier & liner transformer design.

B.    Features:

1. Left and right channels RCA jack input.

2. Left and right channels RCA jack output.

3. Left and right channels female XLR jack input.

4. Left and right channels male XLR jack Output.

5. Input level select (toggle switch)

6. Idle mode select auto on / on (toggle switch)  

7. Master power switch

8. 2pin IEC plug with fuse holder.

9. LCD display(16X2)

10.Encoder with tack switch for multi-function

C.    Function

1. Volume adjustment. 0dB-----100dB.(1dB/step)

2. Hi-pass adjustment :(line level output only)

     Frequency select :

     31.5/40/50/63/80/100/125Hz

     Slope select :Flat/-12dB/-24dB

     Delay time select :

     0----10msec(0.1msec/step)

3. Low-pass adjustment :(subwoofer amp output only)

Frequency select :

31.5/40/50/63/80/100/125Hz

Slope selector :Flat/-12dB/-24dB

Phase adjustment:0°---- -180°(-15°/step)

4. Subwoofer Tune adjustment :(subwoofer amp

     output only)

Frequency select :25/31.5/40Hz

Slope select :Flat/-6dB/-12dB

5. P-EQ1/P-EQ2 adjustment :(subwoofer amp output

     only)

Frequency select :

31.5/35/40/46/50/56/63/70/80/90/100/112/125Hz

Level select :+3dB/-12dB(1dB/step)

Q Factor select :0.5~5 (0.1/step)

  6. Frequency Response Equalization :(Formosa internal setting only based on  customer’s request.)

Frequency select: Any Point 20 ~ LPF

Level select :+3dB/-12dB(0.1dB/step)

Q Factor select :0.5~15(0.1/step)

D.    Specification

1. Output power ………… 500Wrms/@4ohm @ 1% THD

2. S/N Ratio @ rated power …… > 95dB @ A-WEI

3. THD @ -3db rated power A-WEI ………… < 0.05%

4.  Input sensitivity ………… 0.5v/100Hz OR 1V/100Hz

5. Input Impedance ……………………………………… 22KΩ

6. Dimension ………………320(L) x 208(W) x 74(H) mm

7. Package………………………………………………… 6pcs/CTN