Digital Supergreen?

[stickjam]

Say you had to build a digitally-controlled version of the Supergreen. Is there anything else, other than 12 relays, that you'd consider using to control the gain? Is there any possible way a FET or other scheme would have any hope of giving the same performance?

Thanks!

--Bob

 

[jdbakker]

Yes, you'll need the relays as a FET will likely not give adequate performance.

Why not take a digitally-controlled microphome preamp chip instead ?

JDB.

 

[stickjam]

[quote author="jdbakker"]Yes, you'll need the relays as a FET will likely not give adequate performance.

Why not take a digitally-controlled microphome preamp chip instead ?

JDB.[/quote]

Interesting. The SMD packaging is a bit of a drag, but the general purpose digital outs would be too cool for switching phantom, phase, etc.

Has anyone heard the PGA2500? Sonic impressions?

 

[TomWaterman]

Have a look at the Neve 1081R schematics for ideas - there is a version with relays and one with optos I think(?)...

www.ams-neve.com - support, downloads section.

-T

 

[jdbakker]

[quote author="stickjam"]Has anyone heard the PGA2500? Sonic impressions?[/quote]
It has been discussed here before, a search should find the relevant threads. IIRC the general impression was positive.

JDB.

 

[stickjam]

[quote author="jdbakker"][quote author="stickjam"]Has anyone heard the PGA2500? Sonic impressions?[/quote]
It has been discussed here before, a search should find the relevant threads. IIRC the general impression was positive.

JDB.[/quote]

Ahh-- yes. Found it.

Thes level of miniaturization that the 2500 would provide certainly meets my hope of cramming 24 preamps into a single (hopefully 1RU) box to provide a laptop computer controllable front-end to an HDR. The back panel would have DC power inlet (from a separate 1U enclosure) and 6 Tascam-pinout DB25s on the back for audio gazintas and gazoutas. Front panel would have just a RS-485 input, monitor output, power LED and maybe 24 overload LEDs.