Ultrasound AG-50DS2 User manual

Back Panel Continued
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. When ON the unit is ready for play.
Protection
Short circuit and thermal overload
protection.
Spec.’s for the DS2 series:
 Input
Impedance: 1 Meg
Sensitivity: 150MV to 6V
 EQ: (Active)
Bass: +/- 12db @ 150HZ
Treble: +/- 12db @ 5kHZ
 Shape
+5db @ 3kHZ
-5db @ 1500HZ
+5db @ 100HZ
 Notch (Feedback Elimination)
Range: 100 to 350HZ
Attenuation: –18db
 Line Out
IMP: 10K
Sig. Level: 300MV Nominal
 Output
Power: 50W RMS
Total Harmonic Distortion: .1%
Signal to Noise Ratio: 98db
DS2 series dimensions:
AG-50DS2 AG-100DS2
Weight: 23.7 pounds 37 ½ pounds
Height: 13” 21 ½”
Length: 18” 18”
Depth: 10 ½” 10 ½”
Serial number:
Model number:
Date of purchase:
Purchased from:
Please fill out and keep for your records.
ULTRASOUND AMPLIFIERS
2150 Delavan Dr ste 11
WEST DES MOINES, IA 50265
PHONE: [phone]
FAX: [phone]
www.ultrasoundamps.com
E-MAIL: [e-mail]
CUSTOMER / TECHNICAL SUPPORT:
E-MAIL:
[email protected]
TOLL FREE 1-888-993-5091
ULTRASOUND AMPLIFIERS
2150 DELEVAN DR STE 11
WEST DES MOINES, IA 50265
It Sounds Just Like My Guitar,
Only Louder!!
DS2 series Owners Guide

Digital Effects Program List
1. Room 3: Warm room reverb.
2. Plate 1: Classic plate reverb.
3. Vocal Cancel: Removes lead vocals from many stereo
recordings.
4. Rotary Speaker: Rotary speaker emulation.
5. Chorus/Room 1: Chorus with reverb.
6. Chorus/Room 2: Auto-wah guitar effect with reverb.
7. Delay 1: 125ms slapback delay.
8. Delay 2: 190ms delay for percussive arpeggios
9. Hall 1: Bright hall reverb.
10. Hall 2: Warm hall reverb.
11. Room 1: Hardwood studio reverb.
12. Room 2: Ambience for acoustic mixes and synth
sounds.
13. Chorus: Stereo chorus.
14. Flange: Stereo flanger for jet wash effects.
15. Plate 2: Sizzling bright plate reverb.
16. Plate 3: Short vintage plate reverb.
Front Panel
MIC CHANNEL
MIC INPUT: XLR input designed for direct
connection of a microphone.
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.
LEVEL: Controls the volume of the microphone
signal.
Note 1: When the MIC channel is not in use, be sure to turn
all controls to the minimum level to avoid any unwanted
noise being passed through the amplifier.
Note 2: When using the MIC channel only , a plug must be
inserted in to the GUITAR INPUT jack to disable the auto
mute function.
Front Panel Continued
GUITAR CHANNEL
GUITAR INPUT: Instrument input. Designed for
both active and passive pickups.
SEND: This jack provides an unbalanced output
from the preamp, it does not include effects or tone
control signal.
RETURN: This jack provides a signal pre-eq. It
automatically disconnects the preamp when used.
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.
LEVEL: Adjusts the pre amp gain,(sensitivity), of
the guitar channel. This control should be used to
match your guitar pickup to the amplifier. If amp
overloading occurs when using this unit with an
active pick up system be sure to decrease this level
until the overloading situation ceases.
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.
Front Panel Continued
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.
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.
Back Panel
Mono Line out: This jack provides an unbalanced
out put from the preamp that is post eq and post
efx. 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 such as the ULTRASOUND AG-50E.
Stereo Line Out: This jack provides an unbalanced
stereo output that is post eq and post efx. This send
can be used to feed a stereo signal to a recording or
sound reinforcement mixer. Additionally, with the
use of a “Y” cable, this stereo output can be used to
drive 2 slave amps, such as the UltraSound AG-50E
in stereo mode.
Headphones: This jack provides a stereo signal to
drive headphones. When playing with one of the
stereo effects such as Chorus or Flange, the stereo
separation is very evident. The use of this jack will
disengage the amplifiers internal speakers.
Direct out: Balanced output signal used to feed
recording or sound reinforcement equipment.