TK-ProAudio TK-Lizer

The new TK-lizer is a Baxandall type of EQ, high and low bands are selectable between shelving or bell, very useful for fine tuning of your low’s, mid’s and high’s. 
The EQ also has a built in M/S function which lets you process the mid and side signals separately.
You can also affect the stereo width of your music by using the level controls in M/S mode.
The three bands are based on the legendary Baxandall circuit from the 50’s.

Spec:

• Dual mono 3-band Baxandall style EQ.
• 12dB octave high pass filter (the highest HPF frequency 100Hz which is for mono-ing bass in M/S mode, this frequency can easily be change by the customer).
• All controls are stepped for repeatability and easy channel tracking.
• Broad Q.
• High and Low band selectable between shelving or bell.
• Built in M/S function.
• Electronically balanced inputs and outputs.
• Max output level before clip: 27dBu.
• Main 115v or 230v (not selectable).
• And as usual, it’s handbuilt in Sweden!

Controls:
Low freq: 28Hz, 48Hz, 72Hz, 132Hz, 195Hz, 255Hz, switchable between shelf or bell.
Mid freq: 400Hz, 630Hz, 870Hz, 1.3kHz, 2.4kHz, 7.2kHz. (picture shows 720Hz not 870Hz)
High freq: 4kHz, 7.2kHz, 12kHz, 16kHz, 20kHz, 25kHz, switchable between shelf or bell.
HPF freq: 25Hz, 30Hz, 35Hz, 40Hz, 45Hz, 100Hz, 12dB / octave.
Boost/cut: -4dB, -3dB, -2dB, -1dB, -0.5dB, 0dB, +0.5dB, +1dB, +2dB, +3dB, +4dB.
Level: -4dB, -3dB, -2dB, -1dB, -0.5dB, 0dB, +0.5dB, +1dB, +2dB, +3dB, +4dB.
EQ in/out.
M/S in/out.
Switch for separate monitoring of the mid or side signal.

Resistor value for different HPF frequency (100Hz position)
100Hz    2k8
125Hz    2k2 (2k26)
150Hz    1k8 (1k91)
175Hz    1k6 1k62)
200Hz    1k4
225Hz    1k3 (1k27)
250Hz    1k1 (1k13)
275Hz    1k (1k02)
300Hz    953R