900 Series Chassis for +/-24V projects? (versus +/-16V 500 series)

[velo]

(versus 51X?)

On reverb I just stumbled upon what apparently was popular when I grew up in the 80s.

dbx 900-series chassis with +/-24V rails.

Why did 500 series "win"? +/-16V seems inferior to me.

Should I abandon thoughts of adapting 500-series DIY projects to work with +/-24V rails giving me more headroom? Why do I think I need more headroom? I think I think that my high SPL drumming will benefit me somehow. Could that be made to be true?

I am familiar with 51X chassis. I guess this is the same question but a cheap used 900 series chassis is a cheap 900 series chassis.

 

[emrr]

900 series uses 24V for the output drivers, but 15V for everything else. Has both, pretty sure.

Find the Eisen Audio headroom/voltage chart, I've quoted it a zillion times. 24 isn't that much more headroom.

 

[velo]

900 series uses 24V for the output drivers, but 15V for everything else. Has both, pretty sure.

Find the Eisen Audio headroom/voltage chart, I've quoted it a zillion times. 24 isn't that much more headroom.

Yeah, I saw the +/-15V in the connective tissue. A gentleman on reverb indicated that these units suffered a bit in the sustainable amperage department. Does higher voltage imply limited PSU designs as a matter of historic legacy?

 

[emrr]

A gentleman on reverb indicated that these units suffered a bit in the sustainable amperage department. Does higher voltage imply limited PSU designs as a matter of historic legacy?

It's really case by case

 

[ruffrecords]

24/16 = 1.5 = 3.5dB extra headroom. WIll that really make much difference?

Cheers

Ian

 

[velo]

24/16 = 1.5 = 3.5dB extra headroom. WIll that really make much difference?

Cheers

Ian

I suppose all those things one does that add +3dB or reduce noise by some small amount matter as a sum of parts but any one of them alone might not be justifiable. Thanks for the math; I think that gives it the proper perspective regardless.

 

[velo]

It's really case by case

pun intended? ;-)

 

[AtticMan]

dbx 900-series chassis with +/-24V rails.

Why did 500 series "win"? +/-16V seems inferior to me.

Beta vs. VHS redux? LOL

 

[velo]

Beta vs. VHS redux? LOL

Ha! My best friend's dad had two Betamax units. We used them to record audio a few times.

 

[AtticMan]

Ha! My best friend's dad had two Betamax units. We used them to record audio a few times.

IIRC, there was an early digital audio format (F1?) based around Beta tapes.

 

[velo]

IIRC, there was an early digital audio format (F1?) based around Beta tapes.

https://www.mixonline.com/technology/1981-sony-pcm-f1-digital-recording-processor-377975
I think my buddy may still have the two betamax units and likely several dozen tapes with music on them.