Jacks for extension speakers, along with an impedance selector switch, are mounted on the upper back panel.Why would you be interested in in a Vox amp? Because you’re not looking to melt faces with the creamy crunch of a Marshall, and you’re not playing the type of country or blues that really capitalizes on the punchy twang of a Fender. Two 12" Celestion Greenback speakers are mounted in the open backed enclosure. Removing the upper rear back panel exposes three ECC83 and four EL-84 tubes for easy exchange (see photo at left). Tube replacement no longers requires that the amp chassis be removed from the cabinet. The cabinet is not offered separately, only in conjunction with an AC30C2 amp purchase at North Coast Music. North Coast Music offers the AC30C2 with an upgraded 13 ply baltic cabinet as an extra cost option. Surprisingly, the AC-30C2 amp is only two pounds heavier than the AC30CC2. The AC30CC2, along with its predecessor, the AC-30TB, had 13 ply baltic birch plywood enclosures. The AC30C2 cabinet is completely constructed of MDF (medium density fiber board, or particle board). Eliminatiing the rectfier tube makes the amp more dependable. When it fails, it will blow the main fuse and shut the amp down. The first tube to fail in an AC-30 amp is typically the GZ-34 rectifier tube. However, the diminishing quality of GZ-34 rectifier tubes in recent years has become a real problem. Many feel that the audio compression from tube rectifier induced voltage sag is a central ingredient in AC-30 tone. The change away from tube rectification in the AC30C2 offended some Vox purists. This was the first time since the early 1990's that the AC-30 did not have a GZ-34 tube rectifier. The GZ34 rectifier tube was dropped from the AC30C2 amp in favor of diode rectification. The AC30C2 also has tremolo and a spring based reverb. Line out and effects loop jacks were mounted in the upper rear panel.
The first channel incorporates the preamp circuitry from the original AC-30 "Normal" amp while the second channel featured the Vox AC-30 "Top Boost" circuit. The AC-30C2 is produced by Vox in China and offered a number of significant changes from the AC-30CC2. The AC30C2 replaced the AC30CC2 in January 2010.
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