Dating ampeg cabs
After a couple of gain stages each provided by the two triodes of a 12DW7 in channel 1 and a 12AX7 in channel 2 respectively, the treble and bass pots are sandwiched between two more gain stages provided by a second 12DW7, with the midrange control and related three-way frequency switch brought in after that stage, before a quirky 6K11 tube (a triple triode, meaning it contains three individual amplification stages) used as gain recovery.A 6CG7 tube serves as reverb driver, while the second half of that third 12DW7 drives a 12AU7 phase inverter into the big 7027A output tubes.The pickup was called the "Amplified Peg," which became "Ampeg." Michaels left the company in 1948, leaving it to Hull, who relocated to 42nd Street in Manhattan the following year and renamed it "The Ampeg Bassamp Company." In 1956, Ampeg's name was simplified to "The Ampeg Company" which became "The Ampeg Company, Inc." when the company incorporated in 1959.
This example sports a pair of Celestion Classic Lead 80s – a good choice both sonically and in terms of power handling.The Ampeg SVT-810E is still manufactured using the same design dating all the way back to 1969.The Infinite Baffle design of these sealed enclosures produces vast amounts of tightly focused bass.You’d need five 18” or six 15” speakers to move as much air as the SVT-810E!And they simply wouldn’t be able to respond to transient peaks as quickly as these tens.