Ultrasound DSX POWERSTACK Operating Manual Download Page 3

DSX BACK PANEL

 

 

 

 

X-DRIVER: 

This jack is for connection to a non-powered extension speaker like the 

Ultrasound XTC

. This 

jack provides a “speaker level” signal. The minimum load that can be driven is 4 ohms.  

EFX F.S. (FOOTSWITCH): 

This jack is for connection to a shorting footswitch. When the switch is closed, 

the on board digital EFX will be bypassed. 

EFX SEND:

 This jack provides an unbalanced output signal from the 

CHANNEL-2

 preamp for supplying 

signals to external low-level effects or signal processing equipment. This signal is “pre” tone controls. (The 
tone controls will not affect the EFX SEND signal)  

EFX RETURN: 

Input for “returning” signals from external low-level effects or signal processing equipment. 

This signal is pre tone controls and EFX. 

(CHANNEL-2 tone controls and on board digital EFX will affect this signal) 

LINE OUT:

 This jack provides an unbalanced output from the preamp that is post eq and post efx. This 

signal is pre MASTER VOLUME which means that this signal will not change with the MASTER VOLUME 
setting. This send can be used to feed a signal to a recording or sound reinforcement mixer. Additionally 
this output can be used to drive a slave amp or powered extension speaker. 

DIRECT OUT: 

Balanced output signal used to feed recording or sound reinforcement equipment. This 

signal is post eq and post efx but is pre MASTER VOLUME. 

TAPE/CD

: Unbalanced phono (RCA) input jacks.  This is an auxiliary input designed for use with a drum 

machine, tape player, CD player, etc. and can be used for playing prerecorded music. 

TAPE/CD LEVEL

: This “inset” control adjusts the volume level of the TAPE/CD input. This control can be 

adjusted with a small screwdriver. This signal is pre MASTER control which means that the MASTER 
volume setting will affect the loudness of the TAPE/CD input signal. 

 
AC INPUT:

 Connect the female end of the AC line cord here. Connect the male plug to a suitable source 

of line voltage. Refer to the voltage information on the back of the amplifier for its voltage and current 
requirements. This connector also acts as the main fuse holder and includes a compartment for a spare 
fuse.

  

POWER:

 This rocker switch turns the AC power ON and OFF. 

Summary of Contents for DSX POWERSTACK

Page 1: ...INET OPERATING GUIDE ULTRASOUND AMPLIFIERS 2150 Delavan Drive STE 11 WEST DES MOINES IA 50265 PHONE 515 282 1650 FAX 515 282 1680 www UltraSoundAmps com E MAIL Info UltraSoundAmps com CUSTOMER TECHNICAL SUPPORT E MAIL Support UltraSoundAmps com TOLL FREE 1 888 993 5091 ...

Page 2: ...H FILTER that is used to control resonant feedback Notch Filter ON OFF Enables or disables the notch filter control Shape ON OFF This toggle switch enables or disables the SHAPE control The shape control is a mid dip control In the on position the mid frequencies will be cut and the high and low frequencies will be boosted PHANTOM POWER An internal phantom power source 13 6 volts is provided for u...

Page 3: ...not change with the MASTER VOLUME setting This send can be used to feed a signal to a recording or sound reinforcement mixer Additionally this output can be used to drive a slave amp or powered extension speaker DIRECT OUT Balanced output signal used to feed recording or sound reinforcement equipment This signal is post eq and post efx but is pre MASTER VOLUME TAPE CD Unbalanced phono RCA input ja...

Page 4: ...an amplifier Using a shielded instrument cord can cause unwanted noise or oscillation which can harm the amplifier and speakers Shape On 5db 3kHZ 5db 1500HZ 5db 100HZ Notch Feedback Elimination Range 100 to 350HZ Attenuation 18db Line Out Impedance 10K Sig Level 300MV Nominal Output Power 50W RMS 25 Watts per side Total Harmonic Distortion 1 Signal to Noise Ratio 98db Speakers Two 8 special design...

Page 5: ... that also connect the audio signal to the electrical earth ground The resultant hum is directly related to the differences in current that flow in the respective electrical circuits which all share the same earth ground If the audio signal path is only connected to ground at a single point the differences in ground currents will not induce any interference from the power line so the sound system ...

Page 6: ...usehold cleaner if necessary Disconnect unit from power supply before cleaning 14 Care should be taken so that objects do not fall and liquids are not spilled into the unit through the ventilation holes or any other openings 15 This unit should be checked by a qualified service technician if a The power supply cord or plug has been damaged b Anything has fallen or been spilled into the unit c The ...

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