well, hi again
i agree that this topic is old but still i wish to know the behaviour of lm1036 tone control circuit ,first intial 10 % rise in volume control is almost zero ,means their is no gain ,is this the charectaristic of the tone ic ??,or some thing can be done ,anybody who would help
i agree that this topic is old but still i wish to know the behaviour of lm1036 tone control circuit ,first intial 10 % rise in volume control is almost zero ,means their is no gain ,is this the charectaristic of the tone ic ??,or some thing can be done ,anybody who would help
Attachments
lm1036:
Frequency range with unevenness _ + - 0.1 dB, Hz 20 ... 20000
Signal-to-noise ratio, dB 80
Channel separation, dB 75
Harmonic coefficient at uin = 0.3 V at a frequency of 1 kHz,% 0.06
Input impedance, kOhm 30
Output impedance, Ohm 20
Volume control range, dB 75
Balance adjustment range, dB 26
Tone control range at frequencies
40 Hz and 16 kHz, dB + - 15
Current consumption at voltage
power supply 9 ... 16 V, mA, no more than 45
On the board you can see the OPamp 5532.
Frequency range with unevenness _ + - 0.1 dB, Hz 20 ... 20000
Signal-to-noise ratio, dB 80
Channel separation, dB 75
Harmonic coefficient at uin = 0.3 V at a frequency of 1 kHz,% 0.06
Input impedance, kOhm 30
Output impedance, Ohm 20
Volume control range, dB 75
Balance adjustment range, dB 26
Tone control range at frequencies
40 Hz and 16 kHz, dB + - 15
Current consumption at voltage
power supply 9 ... 16 V, mA, no more than 45
On the board you can see the OPamp 5532.
Signal handling-
quote- "The first stage is before the the tone control processing and provides an initial 15db of gain reduction , so ensuring that the tone sections are not overdriven by large input levels when operating with a LOW volume setting "
quote- "The first stage is before the the tone control processing and provides an initial 15db of gain reduction , so ensuring that the tone sections are not overdriven by large input levels when operating with a LOW volume setting "
You could offset the gain control voltage into the useful range. But this is an analog voltage controlled gain, ie an analog multiplier, which are never very accurate and prone to distortion. It is useful for cheap consumer products but I would never consider it for use where serious sound quality maters. Today, an alternative would be a DSP based design.