Hi all,
I have a MC275 power amp and I'm finding that at low volume levels (50-60dB) the sound lacks low frequency oomph. At higher listening levels (70dB-80dB) the sound fills in nicely. My source is digital music fed from a DAC into a preamp and MC275. Would changing the preamp provide a better listening experience at low volume levels or am I totally looking in the wrong place?
The preamps I'm considering are:
Preamp 1:
Gain 28.5 dB
Max output 5.5 Vrms
Output impedance 100 ohms
Preamp 2:
Gain 25 dB
Max output 20 Vrms
Output impedance 100 ohms
Preamp 3:
Gain 15 dB
Max output 8 Vrms
Output impedance 250 ohms
My MC275 has the following specs:
Input sensitivity is 1.7v using unbalanced connectors
Gain: 23.2 dB from the 4-ohm tap according to Stereophile using unbalanced inputs
Power: 2x 75watts into 4/8/16 ohms
I have a MC275 power amp and I'm finding that at low volume levels (50-60dB) the sound lacks low frequency oomph. At higher listening levels (70dB-80dB) the sound fills in nicely. My source is digital music fed from a DAC into a preamp and MC275. Would changing the preamp provide a better listening experience at low volume levels or am I totally looking in the wrong place?
The preamps I'm considering are:
Preamp 1:
Gain 28.5 dB
Max output 5.5 Vrms
Output impedance 100 ohms
Preamp 2:
Gain 25 dB
Max output 20 Vrms
Output impedance 100 ohms
Preamp 3:
Gain 15 dB
Max output 8 Vrms
Output impedance 250 ohms
My MC275 has the following specs:
Input sensitivity is 1.7v using unbalanced connectors
Gain: 23.2 dB from the 4-ohm tap according to Stereophile using unbalanced inputs
Power: 2x 75watts into 4/8/16 ohms
Last edited:
Hi,
Build something like this into your preamp :
Baffle Step Compensation
However make the capacitor bigger, so it only
works in the low bass, as a loudness control.
Changing pre-amps won't make much difference.
rgds, sreten.
I live in a block of flats so cannot crank the volume.
My amplifier has a similar circuit permanently used.
Build something like this into your preamp :
Baffle Step Compensation
However make the capacitor bigger, so it only
works in the low bass, as a loudness control.
Changing pre-amps won't make much difference.
rgds, sreten.
I live in a block of flats so cannot crank the volume.
My amplifier has a similar circuit permanently used.
Last edited:
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