T and D conclusions (Off Topic)

by Giovanni, Ravenna, Saturday, April 21, 2007, 03:35 (6214 days ago) @ GC
edited by unknown, Saturday, April 21, 2007, 03:41

Hi

if useful I'd like to show these graph measured on 41Hz AMP1, based on Tripath TA2022 and published on an italian magazine:

1. Frequency responce

2. Impedance of speaker load used for measurenments

How explain it?

I know that Signature 30 use exactly the Tripath reference board, like AMP1. But on Signature 30 there are some tweaks: two big PIO input caps and battery power with small bulk caps (with respect to ordinary PS). I don't know the Sig 30 output filter circuit, that is what most affects sound.

Of course this is not a defence of class-T. Just curious because I didn't notice myself the 10Khz-20Khz raising freq, and I know other measurements with same results.

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