APL 1012 10 channel fir filter processor


After 15 years of offering detailed EQ for complete loudspeaker systems, it is time to go to the next level of accuracy and use detailed EQ on each of ways/bands to make an ideal crossover. Please meet APL1012 – 10 channel ultimate FIR filter based loudspeaker system processor.

High Resolution FIR based loudspeaker system processor.

It brings detailed EQ of loudspeakers, known from APL1, to new level of accuracy by allowing to use the power of FIR detailed EQ for each of system’s ways. Thanks to APL Workshop, APL TDA EQ, APL TDA and APL C5 programs in set with APL1012 to make tuning process predictable and straight forward. Analog Device, Xilinx, Cirrus Logic chips are on board.

  • High-Res audio
  • Unlimited bit FPGA DSP
  • High level friendly
  • RCA balanced input
  • Optical digital input
  • Coaxial digital input
  • Remote control
  • Ultimate set of programs


Powerful FPGA based DSP capable to process more then 12 channels of 4096 tap FIR filters
Set of PC programs for measurements and setup.
Extremaly short time for tune up – no tweekings and iterations.
High Grade Cirrus Logic converters offering 117dBA dynamic range.
High Resolution audio bandwith up to 48 kHz.
Start-Stop capability down to 7.5V supply voltage

Ground lift option to deal with ground loops.
Inputs: 2 x RCA analog in, S/PDIF coaxial digital in, TOSLINK optical digital in, USB HD audio in
Outputs: 10 x RCA with max. 4V output voltage (8V in optional balanced mode)
Auto Mute of analog in if signal level drops below -90 dB
Mixing of digital, analog and HD inputs.



2 x RCA balanced, “-10dBV” “+4dBu” levels, 7 kOhm impedance
1 x Coax S/PDIF (up to 96 kHz)
1 x Optical  TOSLINK (up to 96 kHz)
1 x USB HD audio (up to 192 kHz)
1 x Remote In
1x USB configuration in

10 x RCA, 4V output voltage (half of “+4dBu”), 8V in balanced mode
1 x Remote Out

Operating bandwidth
24 kHz for 48 kHz Sample Rate version unit
48 kHz for 96 kHz Sample Rate version unit

DSP resolution
Unlimited FPGA processing

DSP type
FPGA + Audio signal processor

Signal converters
Cirrus Logic CS4385 CS4272

Signal-to-noise ratio digital input
117 dBA

Signal-to-noise ratio analog input
114 dBA

Total harmonic distortion analog input
0.0003% at 1 kHz at -15dBFS
0.002% at 1 kHz at -0.1dBFS

Crossover / Equalizer
Unlimited options offered by APL Workshop and APL C5 programs

APL C5 program

11 preset memory recalled by 16 position remote switch
Auto restart of DSP
watch dog served restart in case of DSP fault

Time alignment
0 – 85 ms
0 – 28 m
Step 0.02 ms(48 kHz SR) 0.01 ms (96 kHz SR)

“Musical” output level limiters at all outputs allowing using loudspeakers at they full power with 10 times peak levels untouched

>90 dB

Operating voltage:
7.1V – 15.7V

Current drawn , power on
500 mA for 48 kHz SR version, 12V power supply
550 mA for 96 kHz SR version, 12V power supply

Current drawn , power off
1.5 mA

Max remote output current  50 mA

Remote IN voltage 7.5 ÷ 15 VDC (1mA)

2A PPTC Resettable Fuse

Dimensions (H x W x D)  
36 x 270 x 200 mm
1.42 x 10.63 x 7.87 “

1.618 kg

Delivery content

1 x APL1012 loudspeaker system processor
1 x Remote control cable (6m) with Volume, Sub level, Balance, 16 preset controls
4 x knobs for remote control
2 x scales for 16 preset switch
1 x 4 pin Phoenix power plug

Free licenses for APL Workshop, APL TDA and APL C5 programs.