500 Series

• GCon USB/Ethernet Protocol compatible
• Digitally controlled analogue circuitry
• Directly controllable from a DAW via USB via plug-in (VST2/VST3/AAX/AAX DSP/AU)
• Hardware A/B switch
• Digital side-chain
• 3 Touch-sensitive encoders with automation recording of Threshold, Mix and MakeUp in the DAW
• True bypass
• Analogue GR meter
• THD - Total Harmonic Distortion with 2 modes (medium and high)
• Mix button for parallel compression
• 24 dBu headroom
• Design: 500 Module

• BURL custom BX3 input transformer
• BURL custom BX4 iron output transformer
• Audiophile
• Discrete class-A signal path
• Rasterized gain poti
• Independent output level control
• 70 dB gain
• Impedance selector
• 6.3 mm DI input
• 30 dB Pad for high-level signals and line inputs
• 48V Phantom power
• Phase reverse switch
• Three-colour level indicator
• Construction: API Series 500 Rack Format

• Threshold range: Adjustable from -25 dB to +20 dB in 31 rasterized steps
• Ratio: Switchable from 1.5: 1 to 8: 1 in six steps
• Timing rotary switch: Six-digit rotary switch, with which the attack and release times of the compressor are adjusted
• FAST switch: Shares the attack and release times of the timing presets
• BLEND knob to mix dry and wet signal
• Link function
• Sidechain HPF at 150 Hz
• Rasterized gain amplifier from -6 dB to +20 dB in 31 steps
• 8-Segment LED meter for level and level reduction
• Type: 500 Module

• 10 Module slots for standard module 500 from different vendors
• Inputs and outputs via XLR
• Incl. external power supply L200PS

• Max. Gain: +60 dB
• +48 V Phantom power switchable
• Phase switchable
• Input between mic and DI switchable
• Class A circuit with germanium transistors
• Feedback control: Affects the sound and function of the amplifier (THD, frequency response and gain change)
• Switch for bass boost (Thick)
• Pad switch
• Dimensions: (WxHxD): 38.1 x 133.4 x 177.8 mm (a 500-bay rack)

• XLR and 6.3 mm jack input and output per channel
• LED display for power consumption
• VCA buses in channels 1-2, 3-4, 5-6, 7-8, 9-10 can be activated in pairs via ink jumpers
• Integrated power supply 90 - 240V
• Type: 19"

• Preamplification: stepless from 6 dB to +20 dB
• Threshold range: stepless from 36 dB to + 22 dB
• Ratio range: stepless from 1.1: 1 to limit (40: 1)
• Attack range: stepless from 20 mS to 75 ms
• Release range: infinitely variable from 100 ms to 2.5 seconds
• FF / FB: Feed-Forward or Feed-Back VCA control
• Maximum output level: balanced and floating transformer output
• Max. Output from 20 Hz to 40 kHz is +23 dBu
• Total Harmonic Distortion and Noise: @ 1 kHz
• +20 dBu output level
• No load
• Main Output, compressor bypassed: better than 0.0006%
• Main Output, compressor activated: better than 0.02%
• Noise: measured at the main output
• Unweighted
• 22 Hz-22 kHz
• Terminated 40 Ohms
• Frequency range: Main output
• Unity Gain @ 18 Hz
• +/- 3 dB. @ 150 kHz 3 dB
• Crosstalk measured channel to channel: 90 dB @ 15 kHz
• Monitor INPUT LEVEL and GAIN REDUCTION
• Construction: API Series 500 rack format

• Preamplification: stepless from 6 dB to +20 dB
• Threshold range: stepless from 36 dB to + 22 dB
• Ratio range: stepless from 1.1: 1 to limit (40: 1)
• Attack range: stepless from 20 mS to 75 ms
• Release range: infinitely variable from 100 ms to 2.5 seconds
• FF / FB: Feed-Forward or Feed-Back VCA control
• Maximum output level: balanced and floating transformer output
• Max. Output from 20 Hz to 40 kHz is +23 dBu
• Total Harmonic Distortion and Noise: @ 1 kHz
• +20 dBu output level
• No load
• Main Output, compressor bypassed: better than 0.0006%
• Main Output, compressor activated: better than 0.02%
• Noise: measured at the main output
• Unweighted
• 22 Hz-22 kHz
• Terminated 40 Ohms
• Frequency range: Main output
• Unity Gain @ 18 Hz
• +/- 3 dB. @ 150 kHz 3 dB
• Crosstalk measured channel to channel: 90 dB @ 15 kHz
• Monitor INPUT LEVEL and GAIN REDUCTION
• Construction: API Series 500 rack format

• +60 dB gain
• Switchable +48V phantom power
• Phase switchable
• Input switchable between Mic / Line
• Input impedance switchable between 1200 and 300 ohms
• Max. Current consumption: + 16v @ 110mA / -16v @ 80ma
• Format: 500 module

• In the 500 Series API format
• Discreet Class A / B design
• Transmitter in the entrance
• Driver stages
• Sidechain and exit
• Independent limiter and compressor in / out
• Hard bypass switch
• Slow Attack with classic 2264A setting or new Slow Attack for bus compression
• LED Meter for Gain Reduction
• I / O points for insert operation with 1073LB
• Shielded housing for maximum Shielding against electromagnetic influences

• In the 500 Series API format
• Discreet Class A / B design
• Transmitter in the entrance
• Driver stages
• Sidechain and exit
• Independent limiter and compressor in / out
• Hard bypass switch
• Slow Attack with classic 2264A setting or new Slow Attack for bus compression
• LED Meter for Gain Reduction
• I / O points for insert operation with 1073LB
• Shielded housing for maximum Shielding against electromagnetic influences

• Microphone preamp with 65 dB gain
• Line and instrument pre-amplification with 45 dB gain
• Button for 3: 1 output transformer
• LED VU meter
• 20 dB Pad switch
• Output volume control
• + 48V phantom power switchable
• Combo input XLR / 6.3 mm jack on the front
• Circuit design with API 2520 operational amplifiers
• Type: 500 Module

• Uses the discrete operational amplifiers 2510 and 2520
• Controllable Threshold, Attack, Release, Ratio and Output
• 10 segement VU-Gain-Reductionpeak Meter
• LinkSwitch
• Switchable feed-forward or feedback compression
• THRUST switch for frequency dependent Sideschain
• Trafosym. exit
• Hardware bypass
• Requires API Lunchbox 500-6B or 500VPR 10 Slot Rack

• Access to the basic reverb parameters of each programme (pre-delay, decay time and decay filter)
• Input, output, and mix (wet/dry) levels can be set globally
• 18 Different reverb programmes
• 100 user presets
• 2.4" OLED display
• Design: API Series 500 format (3 slots)

• Analogue parametric equaliser with +24 dBu headroom and digital recall function in 500 module format
• Stereo / Dual mono / Mid / Side operating mode
• Switchable gain range for 5 dB boost or 15 dB cut per band: HF - 2 kHz to 25 kHz (bell or shelf)
• HM - 600 Hz to 8 kHz with Q control
• LM - 200 Hz to 2.5 kHz with Q control
• LF - 30 Hz to 350 Hz (bell or shelf)
• High pass filter with 12 dB / Oct or 6 dB / Oct
• Bypass switch per EQ band
• Total harmonic distortion function for signal saturation
• 12 Touch-sensitive encoders allow automation recording
• DAW plugin in AAX / AAX DSP / VST3 / VST2 / AU format
• USB port
• Type: 500 module
• Dimensions (W x H x D): 76 x 133 x 158 mm

• Presence EQ with seven bell bands and a shelving band as well as infinitely variable cut / boost
• Between 90 and 150 Hz switchable shelving EQ in bass with infinitely variable cut / boost
• Hardware bypass
• Power supply: +16 V / 110 mA (max.), -16 V / 80 mA (max.)
• Dimensions (WxHxD): 38 x 133 x 153 mm (a 500-bay rack)

• Access to the basic reverb parameters of each programme (pre-delay, decay time and decay filter)
• Input, output, and mix (wet/dry) levels can be set globally
• 18 Different reverb programmes
• 100 user presets
• 2.4" OLED display
• Design: API Series 500 format (3 slots)

• In 500-module design with the concepts of the Chandler Germanium Comp and 2264 Comp
• Input Control Curve with selection: Zener and Germanium Diode Knee
• Mix Control
• Ratio in 3 steps
• Attack
• Sidechain filter (-30, 60, 90, 150, 300 Hz)
• THD Selection
• "Hardwire" bypass
• Construction: API Series 500 rack format

• Consists of Lindell Audio 503 Power, 6X-500, 7X-500 and PEX-500
• Includes neoprene bag, mains cable and operating instructions
• Dimensions (L x W x H): 21 x 13 x 17 cm
• Total weight: 4.3 kg

503 Power:

• 3-Slot rack for 500 modules
• 800 mA power per slot
• Internal universal power supply 90-250V
• Short-circuit and overload protection
• Lightweight aluminium housing

6X-500 microphone preamplifier:

• 500 Module
• Coupled transformers with sym. inputs and outputs
• Up to 65dB gain
• Passive Pultec-style EQ
• 3-Stage low EQ 30Hz, 60Hz and 100Hz (+/-10%)
• 3-Stage high EQ 6kHz, 10kHz and 16kHz (+/-10%)
• Selectable high boost bandwidth
• Phase switch
• 48V phantom power
• 5-LED VU meter

7X-500 FET compressor and limiter:

• 500 Module
• Parallel compression with crossfade control
• 3-Stage attack times
• 3-Stage release times
• 3-Stage high-pass sidechain filter: Off, 100Hz and 300Hz
• 3-Stage ratio: 4:1, 12:1 and 100:1 (all in)
• True hardware bypass
• Coupled transformer with balanced output
• 20-LED gain reduction meter

PEX-500 equaliser:

• 500 Module
• Coupled transformer with balanced inputs and outputs
• Passive EQ in Pultec style
• Hybrid gain make-up amplifier
• 3-Stage low EQ boost: 30Hz, 60Hz and 100Hz (+/-10%)
• 3-Stage high EQ boost: 6kHz, 10kHz and 16kHz (+/-10%)
• 3-Stage high EQ attenuation: 10kHz, 15kHz and 20kHz (+/-10%)
• True Hardwire EQ Bypass