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The PR-40 is thought by most to be the best sounding of the HammondToneCabinets. (Not uncoincidentally, it's also the most recent design of the the Hammond tone cabinets.)

It features ?NecklaceReverb springs, and is tri-amped. One channel carries the bass frequencies (reverb and dry) to two 15" drivers, a second channel drives the high frequencies (dry) to a 12" driver, while the third channel drives the treble reverb signal to another 12" driver.

With the addition of the appropriate "kit" to the organ, the reverb can be remotely switched.

Though these days most players scorn the HammondToneCabinet for the sound of the Leslie, there is much to be said for using both together (particularly in a "living-room" environment). The PR-40 has a deeper bass response than a Leslie122, and so can add a fullness to the pedals. Also the reverb on the PR-40 can be a nice addition to a small room.

The PR-40 is decidedly not a high-tech speaker design. Since it has a open back, the bass response depends strongly on how the cabinet is positioned with respect to the wall(s). Try placing the back of the cabinet facing the wall with about a two inch gap between the cabinet and the wall. Play with the size of the gap to see how it affects the bass response of the cabinet.

See also PR-20ConvertedToPR-40.

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