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DSX FRONT PANEL 

 

 

 

CHANNEL-1 

 

INPUT-1

:  This combo input is designed for both MIC level (XLR) (

XLR input provides Phantom power**

) or Instrument level 

(¼”) signals. 

(The ¼” TRS 

Tip/Ring/Sleeve

 input jack is suited for equipment such as high-impedance microphones, 

keyboards and drum machines. It accepts both balanced and unbalanced inputs)

 (Channel-1 is designed as a generic “flat 

response” channel which is suitable for any acoustic instrument level or microphone signal)  

BASS

:  Adjusts the amount of cut or boost in the low frequency range.

 

 

TREBLE

:  Adjusts the amount of cut or boost in the high frequency range. 

VOLUME

:  Controls the overall volume level of CHANNEL-1.      

Note 1:  When CHANNEL-1  is not in use, be sure to turn all controls to the minimum level to avoid any unwanted noise 
being passed through the amplifier.                             

CHANNEL-2 

INPUT-2

: Combo Input designed for both MIC level (XLR) and Instrument level (¼”) signals. (Channel-2 is designed primarily for 

acoustic guitar) Try both channels to find out which channel works best for your application, some players like Channel-1 and 
others prefer Channel-2. With the myriad of guitars, pick-up systems, and playing styles out there, one of the channels will sound 
great with your gear. (

XLR input provides Phantom power**

VOLUME:

 Controls the overall volume of CHANNEL-2.  

BASS:

 Adjusts the amount of cut or boost in the low frequency range. 

TREBLE

: Adjusts the amount of cut or boost in the high frequency range. 

Notch Filter HZ

:  Sets the frequency of the 18db cut NOTCH 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 use with condenser mics. This power source is on at all times and does not affect the standard 

operation of the amp, even when a condenser mic is not used.  We use the DIN 45-596-P12 volt standard which will operate virtually all of the live sound reinforcement condenser 

microphones on the market.  Some “boutique” externally biased condenser mics will not be compatible and will require 48 volt phantom power. We suggest live sound condenser mics by: 

AKG (C4500B,4000B, etc.), Audio Technica (AT3035, 3032, Pro Series, etc.), CAD, Shure and Crown. 

 

MASTER SECTION 

Effects Assign: This 3 way toggle switch allows the digital effects to be routed to 

CH-1

CH-2

, or if in the middle position will 

supply effect for both channels. 

Effects

 LEVEL:

 Controls the amount of digital effect mixed in to the guitar signal from 0% to 50%. 

Effects

 MODE:

 This is a rotary encoder, which selects 1 of 16 different digital effects. See Digital Effects Program List.

MASTER VOLUME

: Adjusts the overall loudness of the amplifier. 

Pilot Light/Limit Indicator

 :  When GREEN, this LED indicates that the power is turned on.  If the power amplifier reaches full 

power output, the on board 

Limiter

 will be enabled and this LED will turn RED.   

The Limiter allows the amplifier to be played at full 

power without unwanted distortion.  

 

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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