young igor has been working hard for his keep. the fruit of his labour will be this eight channel all transistor microphone amp of fine pedigree. each channel comprises phantom power . pad . phase change. 200ohm balanced input (lundahl input txf) and two stage amplifier .neve 538 first stage followed by the bbc am 7/11 line stage with floating balanced output. we are loving the sound of this set up. so fat and luscious. cant wait to hear the 8 with a band plugged in. the bbc rack’s first job was in the broadcast radio&television system built for the christchurch commonwealth games of 1974. and the neve 538 design are of a similar vintage.
Monthly Archive for October, 2010
this is the latest ekadek commission. a totally fantastic 16 channel tube line amplifier. 32 tube total 20 rack units. this is the 25 kilohm sensitive floating front end destined to output onto the faders of a valve mixing console. my client already has many fine flavoured mike pres and eqs and he needed a hi quality tube stage to steady all the different gains and strengths of that mixture of machines. the 16 channels are all of the pultec MB1 two tube amplifier design negative feedback gain controlled stages for low distortion & high gain. flat out dc to daylight freq response. and perfectly noiseless enough . these drawings are first off ideas that look pretty comic. but they were good renditions to speak about and refine into cnc able artwork. theres actually two chassis of eight channels each and a separate power supply. the metalwork is being made as i type cross fingers.