Hey , nice ...
Can you do the through- hole DL pads for the OP's , fuses , and
PS/ground/output connectors ? (another smaller pad on top - through holed)..
makes it easier to mount the OP devices , we did this one the "badger".
Also, maybe even the IPS/OPS interfaces (in case one want to
use "pins" for the IPS interface) ... or OPS interface.
OS
I imagine once we settle on the input section that we want to run we are better off with a soldered connection between the sections than any type of connector that can lose contact or become dirty over time?
No issue here.
I ran my first badger as a module with wire wrap pins
into euroterminals for over 3 years , all was tight and
good.
IPS's have very low currents , as well (18ma max for the wolverine)
This would present NO problem for a euroterminal that can handle
AMP's !!
Bottom line .. a quality euroterminal properly tightened will
last for many decades. Military uses them ...
OS
They optimally go at a 90 degree angle to each other.
With the IPS along the back panel of the enclosure.
This way the input jack can be just CM's away from the IPS.
PS - for those with long heatsinks ... just leave the board together and jumper
the interface.
OS
Meanman,
Those types of standoffs are pretty easy to come by at least here in the US. I can't see how they attached the lower portion to the vertical board? An angle perhaps?
Those types of standoffs are pretty easy to come by at least here in the US. I can't see how they attached the lower portion to the vertical board? An angle perhaps?
OS,
The Euto connector you are talking about are screw down connectors? I just don't know them, I may have seen them in other equipment but never heard that term before. Something used in DIN chassis I would think, something I would have seen in perhaps a PLC enclosure?
The Euto connector you are talking about are screw down connectors? I just don't know them, I may have seen them in other equipment but never heard that term before. Something used in DIN chassis I would think, something I would have seen in perhaps a PLC enclosure?
here is a pix of the very first "badger" , it
has the pins/euroterminal as interface.
This amp "partied" HARD for 3 years +. 😀
PS - pix of a standard euro terminal is #2.
OS
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Got it. I have wired plenty of those in DIN equipped wire runs. No problem just never heard the term before.
My problem with non-solder connections is that circuits just aren't designed to have an internal connection open up during operation. It only needs to happen ONCE... That's why I don't use breadboards. These are high power amps, they will be used near speakers and depending on individual mounting methods will probably vibrate at certain notes. It's really not hard to solder a few connections after verifying everything works. After all, you've just soldered a whole PCB.
That pix I showed , keen ... I had that amp on top of the speakers
(for 3 years) !
Those euro- terms were tight as hell after 3 years.
I would expect the chassis screws to loosen before the interface screws !
PS - I want to get "still4given" into this camp ... he will build every front
end on the forum ...as I "POP" EM' OUT !!
OS
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Thanks ostripper so .....Q5=2SC1845,Q6=2SA970
Q7=2SA1015,Q8=2SC1815 OR 1845
Q9=KSA1381E ,Q10=KSC3503E
Seems to be ok.
It's a high power amp so you need big sinks,I personaly would leave them together.I look into the matter and see what's available for connection.
My VFA IPS using Hawksford cascode VAS.
I change resistor emitor on VAS to 100 Ohm, reduce VAS current almost same as my CFA's VAS current.
I almost can not notice the different in listening test of my CFA and VFA. But female voice like "tsss" or "tttzzzz" is more nice on my CFA. Different slew rate or different harmonic pattern?
I realize that I must compromise the VAS linearity before adding feedback and maximum open loop gain to get "nice sound".
I change resistor emitor on VAS to 100 Ohm, reduce VAS current almost same as my CFA's VAS current.
I almost can not notice the different in listening test of my CFA and VFA. But female voice like "tsss" or "tttzzzz" is more nice on my CFA. Different slew rate or different harmonic pattern?
I realize that I must compromise the VAS linearity before adding feedback and maximum open loop gain to get "nice sound".
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Consider your inquisition into symmetry, add a bridge, then take a Pass at it. Might be surprised. CFA, VFA, either one will work. I woul imagine it would look like what MIB was hinting at. I had a thought about the possiblilty of an UGS stage and HAwksford Vas, if it is as superior as you say.