Lafayette   LA-125   Amplifier   Series   History


NOTE ..... External web-links to PDF files are in the form of underlined, blue-colored text.


The Lafayette LA-125 / LA-150 / LA-1050 series history is as follows ...

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Special Info on LA-125T and LA-125TA Inputs
Mic-Musical (125T/TA), Ceramic Phono (125T/TA) and Tape Head (125T)

The LA-125T and LA-125TA mic-musical instrument inputs were stereo, but there was only a single 1/4-inch standard
phone jack. For stereo usage, this single jack required a y-adapter cable with a 1/4-inch 3-conductor phone plug at one
end and two single channel jacks (either 1/4-inch phone, 1/8-phone or XLR) at the other end. If such adapters were not
readily available, then one could easily be made from individual components found in consumer electronics catalogs
such as those from Lafayette, Radio Shack, Allied, Olson, Burstein-Applebee and similar firms.

Under the right conditions, one could also hook-up a mic mixer (either passive, or powered with low-level output)
to the LA-125T/TA's mic-musical jack.

The Ceramic Phono inputs of the LA-125T and LA-125TA required an incoming signal of up to 80 millivolts for full amplifier output.
By modifying an RCA phono plug cable with the appropriate resistors, or by creating a switchbox (if an assembled one was not
available) containing multiple input level settings, hi-fi equipment such as tuners and tape units with higher levels of signal
delivery (250-or-more millivolts) could be safely attached to the Ceramic Phono inputs.

The Tape Head inputs of the LA-125T were optimized to accept direct input of a non-amplified tape head signal, usually about
the same optimum level as that for magnetic phono pickup inputs. When tape deck units began having their own built-in head
amplifiers from the late 1960's onward, integrated amplifiers like the LA-125TA did away with the Tape Head option.

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