background image

 

 

 

ATI Audio Inc.      

     Tel: 856-626-3480      

      Fax: 856-504-0220      

     sales@atiaudio.com      

      www.

 

 

audio.com 

 

HEADPHONE OUTPUT 

 
The  front  panel  headphone  jack  is  a  convenient  metering  point,  an  auxiliary 
output  or  headphone  output.  The  jack  is  wired  to  drive  stereo  headphones  with 
channel A to the tip and channel B to the ring. The sleeve connection is wired to 
ground. The jack is isolated by 470 ohm build-out resistors. 
 
 

POWER SUPPLY 

 
Your DA2008-1 power supply incorporates a couple of unique regulating devices 
called  zener  diodes.  In  contrast  to  most  fancy  IC  regulators,  these  devices  will 
live  through  most  line  transients  and  simultaneously  protect  your  expensive 
circuitry. As further insurance, a varistor suppressor is  placed  across the  power 
transformer secondary. 
 
 

INSTALLATION 

 

MOUNTING 

 
Your  DA2008-1  may  be  desk  mounted  on  its  non-slip  suction  cup  feet,  or 
securely rack mounted with our optional 21075-501 Rack Mount Shelf. Since the 
DA2001-8 is 1/2 rack width, the 21075-501 supports up to two units side by side. 
A 1/2 rack Filler Shelf, ATI Part Number 21098-501, is available if  you  are rack 
mounting only one unit. 

 

WIRING 

 
The  DA2008-1  line  cord  contains  a  three-wire  grounded  plug.  The  third  wire 
ground  can  cause  a  ground  loop  with  your  facility  ground.  If  you  are  sure  your 
facility ground will provide adequate protection to personnel in case of an AC line 
short  to  chassis,  a  3-to-2  AC  adapter  can  be  used  to  isolate  the  power  line 
ground. We recommend that the adapter be removed and the power line ground 
reconnected  prior  to  any  service  work  requiring  removal  of  the  facility  ground 
from the DA chassis. 
 
The four inch silver bearing copper strap, which you are, of course, using for your 
main facility ground is not going to fit around the #6 chassis ground screw on the 
DA2008 rear panel. Run the strap to within a few inches of the chassis and jump 
to the chassis ground with shield braid. 
 
Audio  inputs  and  outputs  should  be  connected  using  the  rear  panel  labels  as  a 
guide. Hi outputs are all in phase with each other and in phase with the Hi inputs. 
Fanning strips are provided so that our ears won't be burning in the middle of the 
night  while  you  are  trying  to  wrap  wires  around  those  tiny  barrier  strip  screws. 

Summary of Contents for DA2008-1

Page 1: ...ATI Audio Inc Tel 856 626 3480 Fax 856 504 0220 sales atiaudio com www audio com Copyright 2011 ATI Audio Inc DA2008 1 DUAL 1X4 DISTRIBUTION AMPLIFIER OPERATING AND MAINTENANCE MANUAL ...

Page 2: ...udio use and in particular provides a high slew rate capability of 13 volts microsecond virtually eliminating slew induced Transient Intermodulation Distortion By contrast the old standard 741op amp has a slew rate of only 6V microsecond This op amp is now available from several U S manufacturers in single and dual versions and forms the basis for our Model DA2008 1 design This chip incorporates a...

Page 3: ...d outputs through 150 ohm build out resistances All outputs will tolerate short circuits across the output or to the ground without damage Up to two outputs can be shorted with no significant reduction in headroom Needless to say this is NOT the recommended mode of operation Do not drive a LO output into the grounded end of an unbalanced load Drive single ended loads from either the HI or LO outpu...

Page 4: ... rack Filler Shelf ATI Part Number 21098 501 is available if you are rack mounting only one unit WIRING The DA2008 1 line cord contains a three wire grounded plug The third wire ground can cause a ground loop with your facility ground If you are sure your facility ground will provide adequate protection to personnel in case of an AC line short to chassis a 3 to 2 AC adapter can be used to isolate ...

Page 5: ...tion by connecting one between HI and GND and the other between LO and GND The two loads thus driven will be out of phase with each other Maintenance Notes IC power supply voltages are and 16 VDC nominal If zeners are replaced remove ICs and check output voltage before plugging ICs back into the circuit Remove power when inserting or removing or ICs IC output DC voltages under no signal conditions...

Page 6: ...CTION 80dB for common mode hum inputs INPUT IMPEDANCE Balanced differential inputs 30 000 ohm bridging 24dBm maximum input level GAIN 26dB front panel adjustable OUTPUT ISOLATION 70dB minimum at 1 kHz any output to any other output unit will tolerate up to two shorted outputs with no reduction in headroom POWER 115 230 VAC 10 47 63 Hz SIZE 8 1 2 21 6cm W x 1 3 4 4 5cm H x 7 17 8cm D SHIPPING WEIGH...

Page 7: ...duct that has been discontinued from its product line with a new product of comparable value and function This warranty shall be void in the event a covered product has been damaged or failure is caused by or attributable to acts of God abuse accident misuse improper or abnormal usage failure to follow instructions improper installation or maintenance alteration or lightning power fluctuations and...

Reviews: