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FACTOIDS & TRIVIA

Ampeg’s Portaflex series amplifiers were extremely popular. They were relatively compact and the flip-top head made for easy and safe transportation. In addition, the ported designs of the Portaflex cabinets were acoustically efficient and had remarkable tone. The “X” suffix denoted that the amp was for “universal” use, i.e. guitar, bass, keyboards, or accordion. At 50 watts, the larger X series models were more powerful than other Portaflex amps. Some models, like the B-18-X were equipped with a high compression horn for additional upper range frequency response. This particular amp is one of the last to come with the famous blue check covering since almost all Ampegs were covered with smooth black vinyl by 1967, the year the model was discontinued.
 

AMPEG B-18X PORTAFLEX AMP (1967)




Power Amp:  Tube; 2 x 7027A, 50 watts RMS @ 16 ohms

Preamp:  Tube; 4 x 12AX7, 1 x 7199, 1 x 6CG7

Rectifier:  Tube; 1 x 5AR4

Speakers:  1 x 18" Fane; 1 x high compression horn Jensen

Channels:  2; 2 inputs per channel (Guitar, Accordion)

Effects:  Vibrato, reverb

Controls:  Bass, treble, volume; tremolo intensity and depth, reverb intensity, foot switch for tremolo and reverb

Dimensions:  24 H x 30 W x 15 D inches

Weight:  110 lb. (egads!)






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