The Doors Forum

Vince,

In many photos and film, especially during '68, you see the boys using these large amplifiers with big horns in them. Were these part of some endorsement deal that the band was forced to use? The band didn't use these same amps in '69 or 70, right?

They were unreliable amplifiers as far I as I can tell. Robbie always had tuning problems and I don't think these amplifiers helped him at all.

Can you verify these amps with the large horns were part of an endorsement deal forcing the band to use them?

The Doors were not "forced" to use Acoustic amps. Acoustic amps were "state of the art" of the time and popular among several bands of that era. There were various speaker configurations, 2X15 +horn, 2X12 +horn, 4X12, 18" folded horn bass enclosure. The Doors had some custom built cabinets, I believe 6X12, 2X15 6X8". Robbie like most guitar players prefer tube amps. Marshall tube amps were just starting to get imported to the USA. Its interesting to see the amp designs of the past and how onstage & FOH amplification has evolved.

https://en.wikipedia.org/wiki/Acoustic_ ... orporation