http://www.retrovox.com.au/trimaxA30.pdf
Im trying to understand what each stage of this limiter does, if anyone could shed some light...but be gentle with me i may not be a technical as most.
Can i begin by saying what i think each bit does & maybe someone or someones can correct me and fill in the gaps
seems like the T1 & 1620 on left of schematic is a little pre amp
C7 of input amp is feeding the grid of 6SN7 below which Im told is a phase splitter ?
the next 6SN7 Im told is cathode follower ?
6X5 is rectifier
So is this little circuit basically an amplifier fed via the input amp (1620) C7 to provide a control voltage coming from the daul diode 6X5 ??
Going back to the output of the the 1st amp(1620) OP via T2 thru time delay circuit T3
So now the side chain is making the control voltage before the actual signal arrives at the output
The 6SN7 after T3 is the limiting part of circuit 7 control voltage fed via the 6X5 rectifier...tho I dont understand how it controls the level here ?? ....Help!
Is R32 R33 make up gain level of the push pull make up amp 2X 6SJ7s plus one last 6SN7 T4 OP tran
Silly question here what is EM bottom right of schematic ?? meter ?? & R46 ? is that for zero
I am looking around for threasholds and ratios & time constants theres a little switch by the 6X5 wonder what that does do ? ah I think thats control voltage out for another unit..
Im supposing the side chain is taken from the input amp because thats before the time delay lattace thing.
There the output amp does have to be a push pull as in usual vari mu but I spose push pull is less distortion type amp
I notice the OD3 voltage reg feeds vari stage and side chain
Seems the control voltage comes from the cathode ? of 6X5 in usual vari mu comes from anodes ?? I dont understand much about how tubes actually work yet sadly
Does anyone know what these limiters sound like ?
Thanks for your patience would love to hear any thoughts on this one cheers.
Im trying to understand what each stage of this limiter does, if anyone could shed some light...but be gentle with me i may not be a technical as most.
Can i begin by saying what i think each bit does & maybe someone or someones can correct me and fill in the gaps
seems like the T1 & 1620 on left of schematic is a little pre amp
C7 of input amp is feeding the grid of 6SN7 below which Im told is a phase splitter ?
the next 6SN7 Im told is cathode follower ?
6X5 is rectifier
So is this little circuit basically an amplifier fed via the input amp (1620) C7 to provide a control voltage coming from the daul diode 6X5 ??
Going back to the output of the the 1st amp(1620) OP via T2 thru time delay circuit T3
So now the side chain is making the control voltage before the actual signal arrives at the output
The 6SN7 after T3 is the limiting part of circuit 7 control voltage fed via the 6X5 rectifier...tho I dont understand how it controls the level here ?? ....Help!
Is R32 R33 make up gain level of the push pull make up amp 2X 6SJ7s plus one last 6SN7 T4 OP tran
Silly question here what is EM bottom right of schematic ?? meter ?? & R46 ? is that for zero
I am looking around for threasholds and ratios & time constants theres a little switch by the 6X5 wonder what that does do ? ah I think thats control voltage out for another unit..
Im supposing the side chain is taken from the input amp because thats before the time delay lattace thing.
There the output amp does have to be a push pull as in usual vari mu but I spose push pull is less distortion type amp
I notice the OD3 voltage reg feeds vari stage and side chain
Seems the control voltage comes from the cathode ? of 6X5 in usual vari mu comes from anodes ?? I dont understand much about how tubes actually work yet sadly
Does anyone know what these limiters sound like ?
Thanks for your patience would love to hear any thoughts on this one cheers.