In concert halls the walls are made out of acoustic materials. The materials, as well as the amplifier may result in multiple echoes in a concert hall.
Oxford
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Well I saw him in September 1975 at De Montfort Hall
George Harrison
Luther Vandross performed at the Royal Albert Hall in 1994, and the venue typically has a seating capacity of around 5,200. However, specific attendance numbers for that concert are not widely documented. It's likely that the concert was well attended, given Vandross's popularity at the time.
Change the surround setting on your receiver. Choosing Hall or Concert adds reverb and delay to the speakrs. Try a Club or Jazz Hall setting.
Maverick Concert Hall was created in 1916.
Sapporo Concert Hall was created in 1997.
Ermitage - concert hall - was created in 1914.
Video Concert Hall was created in 1978.
Thessaloniki Concert Hall was created in 2000.
Limoges Concert Hall was created in 2007.
Vigadó Concert Hall was created in 1859.
Oslo Concert Hall was created in 1966.
Vatroslav Lisinski Concert Hall was created in 1973.
Carnegie Hall Concert was created on 1966-07-25.
Arlene Schnitzer Concert Hall was created in 1927.