Rough Notes

53 Series Style BBC Modules Audix, Calrec, Chiliton

http://vintageaudiogearbox.com/goods/preamps/calrec/PQ1161.html

German vintage modules: http://blog.goo.ne.jp/wellver

http://soniccircus.com/neve-BBC-vintage

http://www.technicalaudio.com/neve/neve_pdf/0440_BA440_class_AB_line_amplifier_doc_4pages.pdf

"Both the 1081R and the 4081 use exactly the same mic/pre circuit design as the 1081 classic module. Exactly. The only difference is the Production techniques – the 1081R/4081 use modern components on modern PCB’s instead of old-school components and hand-wired assemblies. There is however no difference in sonic performance, as the modern design is made to ensure the same responses as the classic design.

The major difference between the 1081R/4081 and the 1081 classic is that here is no EQ and Output stage processing in the 1081R/4081. In the 1081 classic module, this extra audio stage involves additional transformers and additional amplifier circuits. The 1081R/4081 do not have these extra circuits fitted. But the Mic/pre circuit design and performance of the 1081R/4081 is exactly the same as the 1081 classic module.

The other difference is that the 1081 Classic has no modern circuitry in it, so no remote control and FireWire options!......... "                                       "Hi

It was a silly philosphy. Take the EQ out of the equation and the 1081 is a 10468 and BA338 and the BA340 and LO2567 output stage is a massive part of the sound.

You just can't remove the latter and say it sounds like a 1081.

It's silly because you could also call it a 3401R, 3402R or 3405R, all of which use the 10468 and BA338. Without the EQ, why call it a 1081?

Same with the 1073... take away the EQ and you have a 1290... not a 1073.

It's all to do with buzz words...."

https://www.gearslutz.com/board/5505691-post16.html

He made a preamp for Taylor

Air Preamp = (31)106+34427/FSA110?/ISA (31)110/Red/1081/R Air

ISA = Input Signal Amplifier

9098/RND = TLA

TLA = Transformer Like Amplifier

88R Preamp - AD797 IC

"The 88R is fitted with digitally controlled mic pres similar to those used on the Montserrat consoles (but uses a modern digital control system rather than phantoming dc from the 31106 to the remote 31292 (?) mic pre that stepped through FET's in the pre-amp feedback path).... but  all this has zilch, nada, zero, etc., to do with the 1084 module which isn't used in the 88R or the Montserrat consoles... unless someone can show me otherwise!"

"Hi

A B640 is a 5534 driving a BC441 and BC461 output device to buffer the 5534 from the low impedance (70 ohms) of the step up output transformer. It replaced the B440 all discrete amplifier.

The 31106 was only used on the three AIR Monseratt style consoles and bears no resemblence to any other Neve module. It used a remote mounted mic pre controlled by dc voltages ramped up by the gain switch and phantomed down the interconnecting cable. It is not similar to a 31105, except at long distance by someone with poor eyesight.

It uses completely different internal circuitry and the front panel will reveal completely different frequency choices.

All the circuit diagrams for the AIR consoles were hand drawn by Geoff Watts, a wonderfully talented engineer with an infectious laugh... may he rest in peace."

https://www.gearslutz.com/board/1950572-post3.html

http://www.coralsound.com/exileshop.html