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DESCRIPTION 

Heritage Audio has recently acquired Lang Electronics Inc., a professional audio company from the 1960s dedicated to 

producing  high  quality  equipment  and  replacement  parts  at  very  accesible  prices.  The  most  desired  product  was  the 

PEQ-2 Program Equalizer. Unfortunately, not very many were made and those that have survived until today are carefully 

guarded  by  their  lucky  owners.  Many  have  said  that  they  actually  prefer  this  model  to  the  ubiquitous  Pultec  program 

equalizers.  Both  are  very  high  quality  passive  equalizers  with  custom  inductors  and  tone  capacitors  and  both  are  from 

Western  Electric  patents,  but  the  fact  that  the  PEQ-2  offers  a  sharper,  tighter  response  makes  it  ideal  for  mix  bus  use 

where  flabby,  undefined  sound  can  ruin  your  results. A  few  important  differences  are:  The  PEQ-2  has  nearly  twice  as 

many frequency options to choose from…26 compared to the Pultec´s 14. The low end is infinitely more controllable as 

the LANG gives you the ability to Boost and Cut at different frequencies, unlike the Pultec.

 

There is also a very useful 20 

kHz  option  in  the  High  Frequency  Peak  Boost  section  that  can  really  be  helpful.So  those  that  are  lucky  enough  to  still 

have them will not let them go. In fact, many have stated that they have become their ´secret weapon´ and totally rely on 

them to produce their trademark sound. So it is only fitting that the first product from the new LANG Electronics Inc. line 

would be the PEQ-2.

While  having  a  very  simple,  clear  and  easy  layout,  the  PEQ-2  can  be  deceiving  as  it  is  actually  capable  of  some  very 

extreme  processing  all  while  maintaining  the  musicality  of  your  signal.  With  independent  controls  for  Boost  and  Droop 

(Cut) of both the High and Low bands you can quickly transform your material in interesting, creative ways that you have 

almost certainly never considered before and are not even possible with the Pultec design. Convenient stepped controls 

provide  easy  recall  and  settings  matching  when  working  with  two  units  for  stereo  use.  Once  you’ve  found  out  how  to 

mould your mixes with these you’ll wonder how you ever managed before.

The  ability  to  boost  and  cut  at  the  same  or  similar  frequencies  produces  exciting  new  equalized  response  curves. 

Experimentation is key, but you will quickly realize just how powerful this feature can be. Within no time the PEQ-2 will 

most likely become one of your most used studio tools. The sheer power if offers with the ease and speed of achieving 

results is impressive…

Not only does the PEQ-2 offer Low Shelf boost and cut control and High Shelf cut, but it also has a High Peak Boost with 

a completely variable Q (Bandwidth) setting that spans from Sharp to Broad to cover any needs. What’s more, the range 

of  Boost  actually  varies  depending  on  what  you’re  selected  Bandwidth  setting  is  to  offer  a  very  smooth  and  natural 

response at all times… Very clever indeed.

 The Low Shelf Boost offers 8 frequencies to choose from: 20, 30, 40, 60, 80, 120, 160 & 240 Hz with up to 16 dB of 

boost. 

 The Low Shelf Droop offers 4 frequencies to choose from: 25, 50, 100 & 200 Hz with up to 18 dB of cut. 

 The High Peak Boost offers 8 frequencies to choose from: 2.5, 3.75, 5, 7.5, 10, 12, 15 & 20 kHz with a boost that varies 

the maximum between 21 and 12.5 dB depending on the Bandwidth setting. 

 The High Shelf Droop offers 6 frequencies to choose from: 2.5, 5, 7.5, 10, 15 & 20 kHz with up to 16 dB of cut.

A high quality Silicon Transistor Amplifier is used in the signal path to restore the signal back to unity gain. An adjustable 

Trimmer screw is located on the front panel within the LOGO, and comes after the EQ. A bypass has also been included 

to  make  quick  comparisons  possible  between  processed  and  unprocessed  signals.  And  like  all  the  Heritage  Audio 

products, the LANG PEQ-2 comes equipped with custom audio transformers at the Input and Output to make sure you 

always have a powerful, solid, noise-free signal to work with. 

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Summary of Contents for PEQ-2

Page 1: ...PROGRAM EQUALIZER PEQ 2 LANG SPECIALIZED AUDIO EQUIPMENT January 2023 Rev 1 0...

Page 2: ...very high prices asked for this equipment which makes them virtually unobtainable for the great majority Now it s possible to obtain that same sound with a brand new piece that will give you all the...

Page 3: ...e not even possible with the Pultec design Convenient stepped controls provide easy recall and settings matching when working with two units for stereo use Once you ve found out how to mould your mixe...

Page 4: ...4 COMPLETE FREQUENCY DESCRIPTIONS...

Page 5: ...FREQUENCY RESPONSE AND EQ CURVES 5 LF BOOST LF BOOST 20 Hz 30 Hz 40 Hz 60 Hz 80 Hz 120 Hz 160 Hz 240 Hz Gain knob fully CW LF DROOF LF DROOP 25 Hz 50 Hz 100 Hz 200 Hz Gain knob fully CW...

Page 6: ...ST 2 5 kHz 3 75 kHz 5 0 kHz 7 5 kHz 10 kHz 12 kHz 15 kHz 20 kHz Gain knob fully CW Bandwidth fully CCW HF BOOST 2 5 kHz 3 75 kHz 5 0 kHz 7 5 kHz 10 kHz 12 kHz 15 kHz 20 kHz Gain knob fully CW Bandwidt...

Page 7: ...7 HF DROOP HF DROOP 2 5 kHz 5 0 kHz 7 5 kHz 10 kHz 15 kHz 20 kHz Gain knob fully CW...

Page 8: ...N and OUT LF BOOST 20 Hz 30 Hz 40 Hz 60 Hz 80 Hz 120 Hz 160 Hz 240 Hz LF DROOP 25 Hz 50 Hz 100 Hz 200 Hz 1 2 3 4 5 ORANGE ACTIVITY LIGHT Indicates EQ is in ON GAIN KNOB LF BOOST 0 to 16 dB GAIN KNOB L...

Page 9: ...OR SPEAKERS THUNDERBOLT COMPUTER LINE INPUT AUDIO INTERFACE D I INPUT PREAMP TT 73 OUTPUT PREAMP TT 73 TRACK INSERT MONITOR SPEAKERS THUNDERBOLT COMPUTER LINE INPUT AUDIO INTERFACE LINE OUTPUT AUDIO I...

Page 10: ...NSERT MONITOR SPEAKERS THUNDERBOLT COMPUTER AUDIO INTERFACE LEFT RIGHT LINE INPUTS PROCESSED STEREO MIX STEREO MIX DAW LEFT RIGHT LINE OUTPUTS LANG PEQ 2A LEFT RIGHT LINE OUTPUTS LANG PEQ 2A LEFT RIGH...

Page 11: ...ER AUDIO INTERFACE SUCCESSOR LEFT RIGHT LINE OUTPUTS LEFT RIGHT LINE INPUTS MASTERED MIX STEREO MIX DAW LEFT RIGHT LINE OUTPUTS LANG PEQ 2A LEFT RIGHT LINE OUTPUTS HA 609A LEFT RIGHT LINE OUTPUTS HA 6...

Page 12: ...n 26 5 dBu into 600 internally terminated THD N Ratio 0 02 1 kHz 24 dBu all control CCW Frequency response 20 Hz to 20 kHz 0 3 dB Noise floor 86 dBu Power 48 V DC 60 mA Dimensions W x H x L 482 mm x 8...

Page 13: ...be When I activate the equalizer there is just too much of a drop in the signal s volume Becareful you are most likely applying to much attenuation to your processed signal The LANG PEQ 2 just makes...

Page 14: ...rchase date The warranty excludes problems due to normal wear abuse shipping damage or failure to use the product in accordance with the specifications Lang Electronics Inc shall not be liable for dam...

Page 15: ...RECALL SHEETS 15 Session Title Track Connected Equipment Date Instrument Frequency Notes Session Title Track Connected Equipment Date Instrument Frequency Notes...

Page 16: ...LANG ELECTRONICS Inc C Alfonso G mez 38 3C 28037 Madrid Spain Tel 34 917 266 189 info lang electronics com 2023 LANG ELECTRONICS Inc www lang electronics com...

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