Monster Massive

[BP1Fanatic]

...and Sandoz (used to) make LSD -25 ... I did ride a Yamaha DT-125E mighty 125 cc Enduro back in 1970s. How did we get so off topic???

Yamaha Audio makes a line of passive PA speakers called the CBR series. CBR is normally associated with Honda Motorcycles...CBR250, CBR400, CBR600, CBR900, CBR929, CBR954, & CBR1000.

 

[Ro808]

The Yamaha CBR series are basically passive versions of the DSR.
Might be interesting to get a cheap pair to deaden the cabinets and waveguide with bitumen and upgrade the crossover (components), or bypass it and go active.