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EQ50 Owner’s Manual 

 

 

12/2016 

 

 

 

20

 

 

 
Also include a note explaining exactly how to duplicate the problem, a copy of the sales receipt 
showing price and date, and your return street address (no P.O. boxes or route numbers, 
please).  If we cannot duplicate the problem or establish the starting date of your Limited 
Warranty, we may, at our option, charge for service time.  
 
Ship the product in its original shipping carton, freight prepaid to: 
Ingram Engineering Service Department 
926 Bruce Circle 
Atlanta, Ga. 30316 USA    
 

IMPORTANT:  Make sure that the RA number is plainly written on the shipping carton. 

 
To obtain service from an Authorized Ingram Engineering Service Center: 
 
Call Ingram Engineering at 678-685-9838, 9 AM to 5 PM Monday through Friday (East Coast 
Time) to receive:  1) The name and address of your nearest Authorized Ingram Engineering 
Service Center and 2) A return authorization (RA).  You must have an RA number before 
taking your unit to a service center. 
 
Make sure that you have a copy of your sales receipt from the store where you bought the 
product.  If you can’t find it, the Authorized Service Center may charge you for repairs even if 
your Ingram Engineering product is still covered by the Three Year Limited Warranty.  
Make sure the problem can be duplicated.  If you bring your Ingram Engineering product to an 
Authorized Service Center and they can’t find anything wrong with it, you may be charged a 
service fee.  
 
If the Authorized Ingram Engineering Service Center is located in another city, pack the 
product in its original shipping carton.   
 
Contact the Authorized Ingram Engineering Service Center to arrange service or bring the 
Ingram Engineering product to them.  
  
Ingram Engineering and Authorized Ingram Engineering Service Centers reserve the right to 
inspect any products that may be the subject of any warranty claims before repair or 
replacement is carried out.  Ingram Engineering and Authorized Ingram Engineering Service 
Centers may, at their option, require proof of the original date of purchase in the form of a 
dated c

opy of the original dealer’s invoice or sales receipt.  Final determination of warranty 

coverage lies solely with Ingram Engineering or its Authorized Service Centers. 
 
Ingram Engineering products returned to Ingram Engineering and deemed eligible for repair or 
replacement under the terms of this warranty will be repaired or replaced within sixty days of 
receipt by Ingram Engineering.  Ingram Engineering may use refurbished parts for repair or 

Summary of Contents for EQ50

Page 1: ...INGRAM ENGINEERING EQ50 Equalizer Owner s Manual Dec 2016...

Page 2: ...EQ50 Owner s Manual 12 2016 2...

Page 3: ...10 3 EQ In Bypass Switch 10 4 Setting Audio Levels 10 5 Low Cut Filter 10 6 See Saw Filter 11 7 High Cut Filter 13 8 Using Filters in Combination 14 ELECTRICAL SPECIFICATIONS 17 ENVIRONMENTAL SPECIFI...

Page 4: ...Example Responses 1 kHz Pivot Frequency 12 Figure 6 High Cut Filter Example Responses 13 Figure 7 Filter Plot Settings for Smoothing a Stereo Mix 14 Figure 8 Filter Plot with Subtle High Frequency Re...

Page 5: ...n operate in differential or single ended unbalanced modes A high current cross coupled active output buffer mimics the behavior of a transformer providing constant gain for balanced or unbalanced ope...

Page 6: ...n 400 Hz and 1 kHz See Saw Filter Simultaneously Adjusts High Low Frequencies High Cut Filter Sweepable from 5 kHz to 200 kHz Low Cut Filter Sweepable from 20 Hz to 1 kHz Hardwire Bypass Around EQ Adj...

Page 7: ...ard connector pins follow Pin 1 Chassis Ground Pin 2 Output Balanced Positive Pin 3 No Connection Pin 4 Output Balanced Negative Pin 5 Audio Ground Pin 6 No Connection Pin 7 No Connection Pin 8 Input...

Page 8: ...eat This product should be situated away from heat sources such as radiators or other devices that product heat 7 Power Sources This product should be connected to a power supply only of the type desc...

Page 9: ...mpt to service this product beyond those means described in this operating manual All other servicing should be referred to the Ingram Engineering Service Department Warning To reduce the risk of fire...

Page 10: ...of the EQ An LED indicates when the EQ is engaged 4 Setting Audio Levels Ideal levels for the EQ50 are 0 dBu nominal at mid frequencies While the EQ50 can accept audio levels up to 20 dBu when the EQ...

Page 11: ...ockwise low frequencies are boosted and high frequencies are cut The filter has approximately linear slope over the entire audio band Max boost and cut are more than 16dB so significant shaping of the...

Page 12: ...EQ50 Owner s Manual 12 2016 12 Figure 4 See Saw Filter Example Responses 400 Hz Pivot Frequency Figure 5 See Saw Filter Example Responses 1 kHz Pivot Frequency...

Page 13: ...The cutoff frequency adjustment range is very wide and extends from 5 kHz to 200 kHz By using a low order 6dB octave filter minimal phase shift of the signal is realized By providing cutoff frequency...

Page 14: ...show examples applications of the three filters used in combination Settings are noted for each Smooth a stereo mix during mastering Low Cut frequency 35 Hz See Saw 0 5 High Cut frequency 35 kHz See S...

Page 15: ...ee Saw pivot frequency 1 kHz Figure 8 Filter Plot with Subtle High Frequency Restoration Settings Compressor sidechain filter triggering on mid lows Low Cut frequency 100 Hz See Saw 2 High Cut frequen...

Page 16: ...See Saw 1 High Cut frequency 45 kHz See Saw pivot frequency 400 Hz Figure 10 Filter Plot with Compressor Sidechain Filter Settings High Trigger Frequency Presence boost Low Cut frequency 35 Hz See Sa...

Page 17: ...ency Range 20 1000 Hz Stopband Slope 6 dB Octave High Cut Filter Cutoff Frequency Range 5 200 kHz Stopband Slope 6 dB Octave See Saw Filter Pivot Frequency 400 1k Hz Selectable Using Push Button Boost...

Page 18: ...0dBu 4VU is the best nominal audio level to use with the EQ50 The See Saw filter can realize nearly 20 dB gain when adjusted to its extremes If EQ50 input levels exceed 0dBu it is possible that the au...

Page 19: ...of submission for warranty work Failure to register the product will not void the three year warranty Service and repairs of Ingram Engineering products are to be performed only at the factory OR at...

Page 20: ...Ingram Engineering product is still covered by the Three Year Limited Warranty Make sure the problem can be duplicated If you bring your Ingram Engineering product to an Authorized Service Center and...

Page 21: ...s required to obtain warranty repairs This is your sole warranty Ingram Engineering does not authorize any third party including any dealer or sales representative to assume any liability on behalf of...

Page 22: ..._______________________________________ _____________________________________________________________ _____________________________________________________________ ____________________________________...

Page 23: ...ucts and or documents or to discontinue any product at any time without notice The product specifications contained herein are subject to change Ingram Engineering assumes no responsibility for inaccu...

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