AMT PRODUCTS MENU
  • AMPS/CABS – УСИЛЕНИЕmenu-01
    • GUITAR AMPSAMPS-200×110
    • POWER AMPSPOWER-AMPS-small
    • GUITAR CABINETSGCAB-110×110
    • BASS GUITAR CABINETSBCAB-110×110
    • Close
  • CABSIM – КАБСИМmenu-cabsim
    • AMT ULTIMA U2U2-110×110
    • APP for PangaeaUpdate-APP-Pangaea
    • IR Converterir-converter-menu
    • PANGAEA devicesPANGAEA-200×110-3
    • AMT CAB CN-1CN-1
    • Close
  • STUDIO / LIVE – СТУДИЯ / LIVE70×70-Menu-Live-1
    • AMT EgoGig EG-4
      4-channel Live WAV player
      ERG-4-200×110
    • AMT Reincarnator RD-2
      (DI-box + ReAmp-box)
      RD-2-200×110
    • AMT Power Eater PE-15
      Load Box
      PE-15-200×110
    • AMT Power Eater PE-120
      Load Box
      PE-120-200×110
    • Close
  • PREAMPS – ПРЕАМПЫmenu-rs
    • BRICKS PREAMPSBricks-small-2019
    • LEGEND AMPS SERIESLA1-200×110
    • LEGEND AMPS II SERIESLA2-200×110-2
    • SS SERIESSS-200×110
    • Close
  • DRIVES/EFFECTS – ДИСТ/ЭФФЕКТЫmenu-ozz
    • OVERDRIVE/DISTORTIONС-drive-2022-110×110
    • EFFECTSEFFECTS-110×110
    • Drive pedals
      (discontinued)
      drive-old
    • Close
  • POWER – ПИТАНИЕmenu-power_2020
    • Fulcrum seriesFULCRUM-200x110_2020
    • SOW SeriesSOW-200×110
    • AMT SeriesAMT-power-2017-110×110-1
    • Close
  • OTHER – ДРУГОЕmenu-other
    • SWITCHINGSWITCH-200×110-new
    • ACCESSORIESBag-stonehead
    • Close
  • PHOTO GALLERY
    • ARTISTS
    • AMT STUFF
  • FORUM (RUS)
  • CONTACTS / SUPPORT
  • OFFICIAL WORDWIDE E-STORE
  • GO TO ► AMT main website
Wednesday, February 8, 2023
Media center of AMT Electronics
  • NEWS & UPDATES
    • Updates for the products
    • Newest Articles
    • AMT ELECTRONICS
  • VIDEO REVIEWS
    • ENGLISH
    • RUSSIAN
    • GERMAN
    • ITALIAN
    • OTHER LANG
    • WITHOUT WORDS (JUST A SOUND)
  • OTHER VIDEOS
    • INTERVIEW
    • OFFICIAL VIDEOS
    • LIVE PERFORMANCE
    • ALL VIDEOS
No Result
View All Result
  • NEWS & UPDATES
    • Updates for the products
    • Newest Articles
    • AMT ELECTRONICS
  • VIDEO REVIEWS
    • ENGLISH
    • RUSSIAN
    • GERMAN
    • ITALIAN
    • OTHER LANG
    • WITHOUT WORDS (JUST A SOUND)
  • OTHER VIDEOS
    • INTERVIEW
    • OFFICIAL VIDEOS
    • LIVE PERFORMANCE
    • ALL VIDEOS
No Result
View All Result
AMT Mediacenter
No Result
View All Result

THE GUITAR SPEAKER SIMULATOR BY VICTOR KAMPF

28/03/2016

by Victor Kampf

Despite the simplicity of its circuitry, the Speaker Emulator has the characteristics of a much more complex circuits. The frequency characteristics of the emulator are shown in the figure below.

 

Pic1

The emulation is based on the specifications of well-known Celestion V30 speaker.

 

Pic2

 

The Device Circuit Diagram

Pic3

 

 

All the stages are distinguished by utmost simplicity while fulfilling all the necessary functions. When using these transistors the direct current modes are set automatically within 3 … 6V.

The first stage of T1 is a repeater with self-bias operating at current equal to the transistor initial current sink. High input impedance (about 1MOm) allows you to connect the simulator directly to high-impedance signal source.

Low-frequency response is formed by means of two filters: passive high-pass of the 1st order formed by C6 and the input impedance of the stage at T3 provide LF downturn within 6db/oct; FHP 0f the 2nd order on T2 creates a “resonant hump” within 130-140Hz, characteristic, for example, for guitar-intended Celestions.

Frequencies above 5kHz are attenuated by LF passive filter of the 1st order R6, C5. Chain C7, R12 emulates a slight increase in the speaker signal, caused by the growth of induced resistance of the speaker at frequencies above 500Hz, which occurs during connection to a tube amp.

At T3, switched by the circuit with a common source, low-pass filter is implemented with weakly pronounced “pseudoresonance” within 4kHz and the decline above this frequency -14dB/oct. T3 source is connected directly to the ground, so the stage works with substantial non-linearity, partially offset by a negative feedback. On the one hand this switching enriches the low-frequency signals with “lower” harmonics, since the compensation at low frequencies is attenuated, on the other – softens “resonance” properties of the stage in comparison with the filters on OC, resulting in more natural sound. The cutoff frequency of the filter is adjusted by resistor R14.

 

Pic4

 

Notch filter based on T4 is connected directly to the previous stage and is designed to create additional “notch” frequencies within 6-8kHz, which in turn “softens” the residual high-frequency components of the filtered signal. The frequency of rejection is changed by resistor R18′.

 

Pic5

 

Any low-power n-channel FET with  IDSS =0.4 … 0.6 mA  (zero-gate voltage current) of can be used as T1-T4.

 


© AMT Electronics

©  Victor Kampf

26.01.2010

 

  • PHOTO GALLERY
  • FORUM (RUS)
  • CONTACTS / SUPPORT
  • OFFICIAL WORDWIDE E-STORE
  • GO TO ► AMT main website
AMT Music gear since 1987

© AMT ELECTRONICS 2001-2022. Omsk, Russia.

No Result
View All Result
  • NEWS & UPDATES
    • Updates for the products
    • Newest Articles
    • AMT ELECTRONICS
  • VIDEO REVIEWS
    • ENGLISH
    • RUSSIAN
    • GERMAN
    • ITALIAN
    • OTHER LANG
    • WITHOUT WORDS (JUST A SOUND)
  • OTHER VIDEOS
    • INTERVIEW
    • OFFICIAL VIDEOS
    • LIVE PERFORMANCE
    • ALL VIDEOS

© AMT ELECTRONICS 2001-2022. Omsk, Russia.

Welcome Back!

Login to your account below

Forgotten Password?

Create New Account!

Fill the forms bellow to register

All fields are required. Log In

Retrieve your password

Please enter your username or email address to reset your password.

Log In

Add New Playlist

Description
  • Noise Gate (global setting)
  • Compressor
  • Analog Preamp (Clean / Low gain / High gain)
  • Power Amp (9 types)
  • IR cabsim (1 IR for both L/R channels per preset)
  • Parametric Pre/Post EQ
  • Hi/Low pass filters + Presence
  • Delay or Reverb effect per preset
  • + other features