The Westminster Bass 1 x 18" Speaker Enclosure
V418 and V4182

Thomas Organ started production of the V418 Vox Westminster speaker cabinet in their California factory during 1966. Their goal was to make the Westminster speaker cab superior to the JMI Vox Foundation Bass model they had previously imported from the UK. Sourcing the 18" speaker component for the Westminster became a problem. Only a few US manufacturers produced 18" speakers in 1966.

Speaker Testing
Cletron, a speaker manufacturer based in Cleveland Ohio, provided an 18" woofer to Vox for performance evaluation. Internal Thomas documents indicated that the Cletron unit was subject to doubling and distortion. It was found to be unacceptable.


A second manufacturer supplied an 18" speaker for evaluation that exceeded the expectations of the engineers at Thomas Organ. It offered distortion-free bass guitar response at high volume levels. This manufacturer, Vega Electronics, got their first big break by supplying the 18" speaker to Vox for Westminster bass amp production.

Over time, Vega Electronics became to be known as "Cerwin-Vega." The legendary Cerwin-Vega "Earthquake" 18" sub woofer enclosure remains in production today.

V418 and V4182 Westminster Cabinets
Thomas Organ offered a V418 and a V4182 version of the Westminster single 18" speaker cabinet. Both shared the same rear ported enclosure.

The V418 version of the Westminster speaker included a four ohm loudspeaker and was offered with the V118 and V1181 Westminster amp heads. These amp heads were both rated 60 watts RMS, 120 watts peak at four ohms.

The V4182 Westminster speaker included a two ohm loudspeaker and was combined with the V1182 Westminster amp head. The V1182 head, introduced in early 1968, was rated 120 watts RMS, 240 watts peak at two ohms. The two ohm V4182 Westminster cabinet allowed the V1182 head to offer all of the output power it was designed to produce.

Cabinet Construction
The Westminster enclosure was constructed of 1" thick particle board. A chrome plated tubular roller trolley was included with the cabinet.


Manufacturing Date Stamp
Thomas Organ often stamped the manufacturing date to the inside of their Vox cabinets. This V418 cabinet had a date stamp on the baffle board that indicated that the cabinet was produced on November 11, 1967. This was likely near the date when the V4182 Westminster replaced the V418.




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