Neve 2254 Limiter / Compressor

 

Pictured above is the more desirable version 2254E with variable attack on the limiter section. Pictured at the bottom of tha page is the original 2254 with switched limiter attack and fixed compressor threshold.
performance: The Neve studios limiter/compressor type 2254A has been designed to meet the varied needs of sound recording studios for a flexible and comprehensive instrument for the control of progarmme dynamic range.
specifications:
input:10K ohm bridging earth-free
output: Source impedance 80 ohms, balanced and earth-free
maximum output +26dbm into 600ohms
gain:0db (preset)
noise:-75dbm in the band 20Hz to 20kHz for the linear and Limit modes rising in the compression mode with an increase in 'MAKE UP GAIN' to a maximum of -60dbm at 6:1 ratio
frequency Response: Flat, within 1db, from 20 Hz to 20 kHz
distortion: Typical results measured at +8db out and with 800ms recovery time are: residual, linear mode-0.05%. Compression mode, 6:1 ratio-0.2%
limiting mode@20db input -0.4%
limiter:
ratio: greater than 100:1
level: +8dbm within 0.5db on preset, adjustable from +4dbm to +12dbm in steps of 0.5dbm
attack Time: 5mS
recovery Time: 100mS, 200mS, 800mS, and 'Auto' 50mS/5 sec.
compressor:
ratio: 1.5:1, 2:1, 3:1, 4:1, 6:1.
threshold: 0dbm, within 0.5db on preset, adjustable from-20dbm, to +10dbm in 2db steps.
attack time:5ms
recovery time: 400mS, 800mS, 1500mS/5 sec
gain:0db below compression threshold, adjustable 'Gain make up' available from 0db to +20db
meter:
switched to indicated either gain control up to 16db or signal level from -12db to +12db. Action approximates that of a P.P.M