My bt20a pro powers 4 tiny markaudio chn50 3" fullrange speakers.
Their nominal impedance is 4ohm, so I have connected them in serial so effectively a 2x8 ohm stereo load.
With the 28V power supply the bt20a pro seems to struggle a bit with this load. I have to turn the volume dial near max for a normal listening volume and it doesn't sound so good. Maybe the amp is clipping?
A 24db xover at 200hz improve the sound. But when using my old harman kardon 2x80w amp xover at 150 sounds even better...
The attached impedance graph for the chn50 shows minimum impedence around 6 ohms. So I'm wondering if connecting the speakers in parallel would improve the sound?
How does the bt20a pro handle a 2x3 ohm load -will it enter protection mode or perhaps catch fire?
My diy hifi rack is ventilated by 5 140mm fans. So airflow is high but room temperature sometimes reach 40-50°C...
Their nominal impedance is 4ohm, so I have connected them in serial so effectively a 2x8 ohm stereo load.
With the 28V power supply the bt20a pro seems to struggle a bit with this load. I have to turn the volume dial near max for a normal listening volume and it doesn't sound so good. Maybe the amp is clipping?
A 24db xover at 200hz improve the sound. But when using my old harman kardon 2x80w amp xover at 150 sounds even better...
The attached impedance graph for the chn50 shows minimum impedence around 6 ohms. So I'm wondering if connecting the speakers in parallel would improve the sound?
How does the bt20a pro handle a 2x3 ohm load -will it enter protection mode or perhaps catch fire?
My diy hifi rack is ventilated by 5 140mm fans. So airflow is high but room temperature sometimes reach 40-50°C...
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