DCMB Sx 1W 8ohm out -> 7,3ohm
DCMB Sx 1W 4ohm out -> 7,3ohm
PowerTotem Sx 1W 8ohm out -> 7,3ohm
[DirectSound] AudioDevice on USB Bus

RightMark Audio Analyzer test


Testing chain: External loopback (line-out - line-in)
Sampling mode: 16-bit, 44 kHz

6C33C - ECL85 PowerTotem vs. DCMB   6C33C op. point ~ 230V/180mA on DCMB, 205V/225mA on PowerTotem.   Prototype with old "dual" power supply, 350VA single PT, simplified (CRC only filters).   Bartolucci 4/8/16 -> 600 ohm OPT (gapped for 225mA).   7.3 ohm dummy load (3x22 ohm parallel).   PowerTotem tested only on 8 ohm output.




Summary

TestDCMB Sx 1W (8ohm out)DCMB Sx 1W (4ohm out)PowerTotem Sx 1W[DirectSound] AudioDevice on USB Bus
Frequency response (from 40 Hz to 15 kHz), dB: +0.14, -0.28+0.35, -1.77+0.06, -0.43+0.12, -0.04
Noise level, dB (A): -81.9-83.8-90.2-93.2
Dynamic range, dB (A): 77.683.890.293.3
THD, %: 0.7380.1460.2540.0041
IMD + Noise, %: 0.7930.5200.2950.010
Stereo crosstalk, dB: N/AN/AN/A-94.6



Frequency response

Spectrum graph


Noise level

Spectrum graph


Dynamic range

Spectrum graph


THD + Noise (at -3 dB FS)

Spectrum graph


Intermodulation distortion

Spectrum graph


Stereo crosstalk

Spectrum graph



This report was generated by RightMark Audio Analyzer 6.0