Once when I was a little boy, I heard my uncle's equalizer which he built into his stereo. The sound was incredible. I still remember it to this day. Three potentiometers gave it a sound that I'd never heard before. I couldn't stop listening to the sound that his compact player made.
Full tube mastering equalizer
I asked my uncle for the diagram and he drew it with a pencil on a piece of paper. I quickly learned the schematic by heart and as an electronic engineer amateur, I have repeatedly built the hi-fi amplifiers using the schematic. The EQ sounded implausible each time.
After many years I decided to make a studio device based on my uncle's schematic. I improved the arrangement by adding a transformer balanced tube stage. The Tilt turned out to be a cool addition too. This vintage circuit is very useful in any mastering application. I hope, you will feel the vibe of my uncle's old radio equalizer.
I hope, you will feel the vibe of my uncle's old radio equalizer.
| Basic features | |
|---|---|
| Q factor | 0.5 to 5 |
| Hard wire bypass | yes |
| Input & Output | |
|---|---|
| Input Impedance (balanced) | 10k Ohm |
| Output Impedance (balanced) | 600 Ohm |
| Levels | |
|---|---|
| Operating Level | +4 dBu nominal |
| Max output level | @ 1.6% THD +37 dBv; +26dBv @ 20 Hz |
| Noise Level | -120dB |
| Bandwidth | |
|---|---|
| Frequency response | 20 Hz to 40 kHz, +/-0.3dB |
| Distortion (@ 20 Hz - 20 kHz) | |
|---|---|
| THD+N | 0.08% (1KHz @ +4 dBu) |
| Crosstalk | >120dB |
| Front Panel | |
|---|---|
| VU Meters | Magic eye |
| Power | |
|---|---|
| Voltage | 230/115 |
| Power consumption | 64W |
| Power supply | Linear, internal |
| Packing box | |
|---|---|
| Shipping weight | 11kg |
| Others | |
|---|---|
| Used for | Mastering, tracking |
| Tube set | 6x6N1P, 2x6E2 |
| Files |
|---|
| TnB_1Bass_Treb.jpg |
| TnB_2Mid.jpg |
| TnB_3Tilt.jpg |
| TnB_4Vari.jpg |
Analog Cure For Digital Disease
IGS Audio is now one the most desired studio equipment brands in Poland and it is continuously expanding internationally. The original IGS Audio products qualify as pretenders to no.1. All stuff manufactured by IGS Audio is accurate and excellent.
IGS Audio is all about happiness in success. IGS Audio offers 3 years warranty for all products (warranty does not cover tubes).
IGS Studio has been operational since 1997. The IGS Audio brand was created in 2003.
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