Warwicks get that classic growl and thump based on a combination of several factors, some which are specific to certain models.
General factors:
-- choice of exotic and dense woods (bubinga, wenga, ovangkol, etc)
-- weight of the bass (I find this contributes to more girth and sustain in the sound)
-- MEC pickups and preamps (these are pretty transparent thus allowing the natural tone to shine through without much coloration)
-- consistency in the quality of their construction
-- the MEC J pickups (including the soapbars) are split-coil pickups; thus the sound is not that of a typical single-coil pickup
Model-specific factors:
-- the Thumb bass has slanted pickups which produce a more nasaly tone due to the proximity of the pickups to the bridge
-- the Double Buck bass has two MM pickups which produce high-output MM-type of sounds
-- the Streamer and Corvettes have pretty standard pickup placement which allows for the more traditional dual humbucker sounds we are all familiar with
-- the majority of the Corvettes are made out of solid bubinga which, in my opinion, have a brighter and slightly more exotic tone than the run-of-the-mill ash and alder used for a majority of other bass brands
-- a majority of Thumb bolt-on basses were made out of ovangkol, which seemed to have a warmer tone but with more pronounced mids. The newer bolt-on Thumbs are made out of bubinga
These are just some of my thoughts. I've owned several Warwicks and, to me, no two Warwicks sound alike although you can always spot the quality of their sound.
General factors:
-- choice of exotic and dense woods (bubinga, wenga, ovangkol, etc)
-- weight of the bass (I find this contributes to more girth and sustain in the sound)
-- MEC pickups and preamps (these are pretty transparent thus allowing the natural tone to shine through without much coloration)
-- consistency in the quality of their construction
-- the MEC J pickups (including the soapbars) are split-coil pickups; thus the sound is not that of a typical single-coil pickup
Model-specific factors:
-- the Thumb bass has slanted pickups which produce a more nasaly tone due to the proximity of the pickups to the bridge
-- the Double Buck bass has two MM pickups which produce high-output MM-type of sounds
-- the Streamer and Corvettes have pretty standard pickup placement which allows for the more traditional dual humbucker sounds we are all familiar with
-- the majority of the Corvettes are made out of solid bubinga which, in my opinion, have a brighter and slightly more exotic tone than the run-of-the-mill ash and alder used for a majority of other bass brands
-- a majority of Thumb bolt-on basses were made out of ovangkol, which seemed to have a warmer tone but with more pronounced mids. The newer bolt-on Thumbs are made out of bubinga
These are just some of my thoughts. I've owned several Warwicks and, to me, no two Warwicks sound alike although you can always spot the quality of their sound.