epping4est

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Repair service for Revel B15 subwoofer
 
Repair service for Revel B15 subwoofer
BTW -- The nominal impedance of the B15a subwoofer’s 15" driver is 4Ω: (For whatever reason, I cannot post the corroborating image here -- despite that it appears in the Preview.)  
Repair service for Revel B15 subwoofer
The Revel Performa B15a subwoofer employs a class-AB amplifier which can run without a load, which might make one think that the problem could be repaired by shipping only the subs' plate amplifiers to an electronics repair shop. PROBLEM: A B15A's... 
Repair service for Revel B15 subwoofer
My two Revel B15a subwoofers have the same [no response to input] problem. If not worth fixing, then what is the 15" driver’s nominal impedance, and what would be an appropriate substitute amplifier?   Is there a service manual for the B15As?