Installing Sound Reinforcement Systems in Mosques
Machine translationRead the Arabic original
Question : Is it said that what they call the echo is of this type?
Answer : No. Does it repeat the letter? It appears that it repeats the letter. It is also distracting, and for this reason, it should be prohibited. I have heard that it exists in some mosques, and this is a mistake. The Qur'an was not revealed to be a record for it. A person should beautify his voice, but he should not use such devices that cause the letters to be doubled or make it sound like a trumpet.
Answer : No. Does it repeat the letter? It appears that it repeats the letter. It is also distracting, and for this reason, it should be prohibited. I have heard that it exists in some mosques, and this is a mistake. The Qur'an was not revealed to be a record for it. A person should beautify his voice, but he should not use such devices that cause the letters to be doubled or make it sound like a trumpet.
Source
قناة «فضيلة الشيخ محمد بن صالح العثيمين»، 1324 - تركيب أجهزة صدى الصوت في المساجد - الكافي في فقه الإمام أحمد بن حنبل - ابن عثيمين — youtube.com
The Arabic text is a machine transcription of the audio recording.