Tuck n’ Go

Based on the Ampeg® B-15NF Portaflex®


(no mid, no presence, no master)
Get sweet and lowdown with this model of the honorable ‘60s Ampeg® B-15F bass amp, complete with the Custom Design, CTS 15 inch speaker. The unique Portaflex® design consisted of the tube amp’s electronics being mounted on a chassis that “flipped over” (hence our nifty model name) to secure as part of the speaker cabinet, intended to offer the portability of a combo, without the over-heating and rattling problems associated with combo amps of the period. Ampeg® founder Everett Hull was not a fan of Rock ‘n Roll music, and thus conservatively rated this amp at 30 watts, to encourage its users to keep the volume at “sensible” levels to avoid distortion. But we think this versatile low-ender sounds just as great turned up for some throaty growl.

All-valve bass – 25W RMS , speaker 1 x 15″ custom Eminence, preamp 3 x 12AX7, rectifier 1 x 5AR4 or 5U4G, power amp 2 x 6L6GC

 It’s tuned and front-ported, has a closed back, is 25 watts with a single 15-inch speaker, and set a new standard for cabinet and speaker efficiency, tone and convenience in bass amplification. If we had to sum up the amp’s sound up in one sentence, we would simply say: Listen to James Jamerson’s bass playing on the Motown®/Tamala records of the 1960’s — The Supremes, The Four Tops, The Temptations, Marvin Gaye, Stevie Wonder, and many more. Jamerson played bass on more Motown hits than anyone else, and his choice for amplification was the Ampeg® B-15. We think you’ll agree that the sound of his P Bass® through that amp on those records is as fresh and exciting today as it was 35 years ago. And if he’s not enough to convince you, how about “Duck” Dunn! Don’t get us started….

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