ruffrecords
Well-known member
If you could have a 100% tube 8 channel sidecar, about the size of the Neve PSM shown below, that features and facilities would you want in it and why?
Cheers
Ian
Cheers
Ian
ruffrecords said:that features and facilities would you want in it and why?
zamproject said:Another idea, for simplification :
DO and insert send share same symmetrical XLR out.
A simple switch (relay based or not) at back to set DO or insert function, basically just internal cut (or not) from DO/send to return
It give less routing capabilities right here, but with optional external wire like Y you mainly have all the same possibilities.
Best
Zam
Depends on which of my designs I use. However at present the only design that will fit in the 35mm module is the Classic. The gain of that is set by a pad at the front and a trim half way down the gain chain. Engaging line input switches in the appropriate pad at the front so the only addition would be to bypass the trim control with a fixed pad to set overall unity gainzamproject said:hey
Yes signalling bus for global relay flip just need diodes.
But there is some under laying consequence for the line/mic flip, basically the line gain "have to" be fixed (studio line level unity)
to "truly" switch to line mixer/multitrack playback, don't now if your line input share the same gain sw as mic for adjust, but maybe to make it efficient and fast when flipping all, a fixed gain network have to be switched too when your line become a tape return.
The simplest option is balanced DO and unbalanced insert on a TRS. I have implemented this before.Insert/DO, my first thinking is two different item XLR (sym) DO and TRS unbal send return.
Second idea is to combine DO/send sym, with cut or pass trough switch, but then it will be better to have return sym as well...
The better is both sym but then you need 3 trafo and 3 XLR at back per chanel, which could be to much space for small side car
(there is also Dsub option to gain space)
All option open, so it really depend at your side what is possible and not, with design constrain.
I agree. It is just this is awkward with the limited number of gain blocks you have in a tube mixer. If it was a semiconductor design you could just add another little op amp to buffer the fader but with a tube mixer that's at least one more tube per channel.Regarding routing, I don't see the point to have DO post fader, because you then miss all the interest to have multitrack out AND stereo mixing and monitoring. But that's me and my workflow, let's ear what other says
That is basically it and you are right about VE summing also giving expansions opportunities.Fader so soon in the chain is problematic if you want extended routing and option in "modules" position (EQ/insert)
I'm not used to tube design with load etc, so I understand they might be design limitation
But I think I get it, you need DO post makeup anyway and having fader post DO let the fader without buffer.
If the cost is just insert at master post fader (and not pre) I'll say it worth it...
VE summing have another advantage is that if you want a side car to your side car, you can link bus if you anticipate option at bus board 8)
That is exactly what I meanregarding aux i'm not sure to understand ? you mean one send only but switchable between two aux bus ?
I'll say if you have the space at FP, and layout room at modules pcb and buss board to have have 3 aux bus (meaning you can have 1 mono and one stereo or 3 mono) it will be just fine !
Best
Zam
Good.ruffrecords said:Depends on which of my designs I use. However at present the only design that will fit in the 35mm module is the Classic. The gain of that is set by a pad at the front and a trim half way down the gain chain. Engaging line input switches in the appropriate pad at the front so the only addition would be to bypass the trim control with a fixed pad to set overall unity gain
If it's already implemented/approved this route is fine, keep it this way.ruffrecords said:The simplest option is balanced DO and unbalanced insert on a TRS. I have implemented this before.
ruffrecords said:Also there are only enough bus amps for four buses in total; two for the main stereo bus and two for AUXes. You could have one stereo AUX or two mono at the moment. I will look at squeezing extra amps in.
ruffrecords said:Regarding FP, there is a 3U by 35mm module for the mic pre (Basically 500 series size) and another one the same size for the three band EQ. So basically all the mic pre and routing controls have to fit in the 3U mic pre module; so that is 48V, phase, pad and mic/line switches, gain trim, pan and AUX pots and possibly solo, pfl and mute switches
your welcome Sir Ian, pleasure is mineruffrecords said:Thank you for all your input.
OK. lots of AUX options. One fixed pre and on fixed post is easy - a bit like the Studer?zamproject said:Hello Ian
AUXes with pre-post select is good feature
still simpler routing option work to (if you have no room for lot of switches/pots)
-one fixed pre and one fixed post
-one fixed and one switchable
-both fixed but jumper selectable at pcb
etc...
I'll say aux mute depend off place in the chain, like pre not affected by mute and post follow mute ?
Not sure PAN in/out sw is requested for a small desk ? But if PAN have a switch, PAN disengaged feed channel to mid
Working on it.Yes a block diagram will be good
Just something coming in mind, are you locked to a 3 bay design, (PRE/routing - EQ -Fader)
because if not you can add a bay for routing (like 2u)
Best
Zam
[/quote
Not locked to it but for first project I want to use the Glensound frame I recently purchased:
]
Cheers
Ian
ruffrecords said:Not sure about jumpers. My modules are not just a plug in PCB they are largely screened and they have high voltages inside so Access is deliberately discouraged!!. Maybe DIL switch?
ruffrecords said:Ihave not yet added Solo and PFL to the block diagram because these could work in several ways. For PFL I normally only switch the monitor section to the PFL but when a PFL bus is pressed so the DO and L/R groups are not affected. Monitor section allows sound to be heard and level to be set by meter.
Solo can be either destructive or not. What do you prefer? Do you wan solo in place??
G-Sun said:For me it would be a 2x8ch summing-mixer,
2 channel with preamp/eq/comp
VU's are nice
Tracking through 1-2-channels, mixing mainly ITB, summing stems or stereo-channel on master.
Put short, a 2ch unit with summing-option.
So, could be much smaller.
Enter your email address to join: