Review on Sony CMT-SBT100 Music Center by Janis Ziemelis ᠌

At low volume it is quite suitable as a background, but at medium volume it is already not very pleasant to listen to. The resonance on the bottoms is tiring. There is an idea to change the acoustics to a more decent one, the resistance of the native is 6 ohms. In general, it vaguely resembles Chinese boomboxes of the late 90s, only in branded packaging, with a proud Sony logo and modern features. 09/06/2022 A year or two ago, I replaced the acoustics with Bronze. Not bad speakers, but they did not take out the sound. Resigned. And then the other day, I got confused, nevertheless, I quickly removed the frequency response. The signal was sent from a smartphone via bluetooth, because. other sources do not interest me, only radio and BT. Five minutes in Excel and the graph is ready! I loaded a resistor of 8 ohms, the signal was sine, the grid was from 20 Hz to 20 kHz. Well, everything is clic. But the result surprised. Volume to "20", timbres to zero. I measured the load swing with a digital oscilloscope. I was surprised by the nonlinearity of the path: up to 40 Hz, everything is cut off in general; after 16 kHz too (blue tooth is to blame? ). At 14 kHz, the sine looks like a ladder, and at 16 kHz there is a signal level deviation. Well, in general, the frequency response is uneven. For interest, I wanted to see the frequency response at the UMZCH input, disembled it and fell into a stupor. UMZCH costs TAS5614A. Too lazy to google - 2x150 W (! ) with digital (! ) input. The evening ceased to be languid. I look where the signal comes from. And here is the DSP: TAS3108. Well, SRC4184 (Sample Rate Converter) was found next door. Well, the CXD9843AR is driving this good stuff. Such a sickly set for a simple "balalaika". Sony knows how to surprise. So it didn’t work to look at the frequency response at the UMZCH input :(, and it doesn’t make much sense, it’s already clear where the legs grow from. It’s clear that they tried to pull the maximum possible out of their micro-columns. That’s just the result - it . Chinese fee for 7 $ with bluetooth 5.0 on board will make this Sonya just go. To be honest, I did not expect such a setup. I thought about changing the device. Maybe put an ordinary car Alpine . And the radio will appear normal, and the sound is good, and bluetooth.