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and to add to that. now to determine what combo of cap values and resistors up to 20k to try the pops are a grounding issue. I suggest 2 things: 1. Assuming you used shielded cable (and you should have), connect all the shields together where the cables connect to the switch. This will provide...

I’ve been reading up on the ways to eliminate dc here is one interesting thought: Lets look at stopping DC from a source component. This shows a series cap and a resistor to ground. Typical values would be a small 0.47uf film type cap and a 470k resistor. This ensures that whatever DC is...

I’ve got some but difficult to ship from Canada. Try these out. Anyone with old carver c1 rca’s will work

Thank you Don I’ll have to check into that. I resolved 99% of my issues yesterday by removing the cable box rca output to the preamp. I had it running through an isolation transformer pack without succes. Now I run it with optical connection only. What remains as the biggest issue is...

No I have not. Been looking at them for years so now is the time the circuit is common so should work. It has dropping resistors and zenor diodes for power to run off the rail supply

I interesting start to rebuild these boards There is a 127 ohm resistor between the phono jack case ground and ground to power caps and 100 ohm on the other one

George I had two Paramax no work for me I used a air solder iron to go over the board and found that somewhere there was a cold solder joint I just Re soldered all through board joints as I could not fine the exact problem as well key components. Somehow that fixed then after I had changed the...

These are the interface I’m using

Lee I’m going to replace the comports on this board I got from you and try it for balanced input on the next 700

I need some help filtering pops in balanced connection of the DriveRack pa2 crossover. Also happing with Rane ac23 crossover turning on - off or disengaging components in my balanced system create pops in system. This never happed in the old unbalanced configuration. This is not limited to one...

George I have three of these units to add to my system. With balanced interconnects sequencing is necessary in my setup’ These units can have a momentary or constant remote switch. I also bought two promax m4000 sequencers, all the same company, which are blue tooth operated . They however are...

Thanks Lee , never seen them this size These two a smaller that all my other 400 meters they are 4-3/8 wide instead of 4 -1/2

This amp has delay on with speaker protection the protection circuit is a little curious as the main power output to the board that I senses has different values from left to right channel R57 and R58 on b and r1 and r2 in series ll schematic attached the other thing will be thermal bias...

I’m setting out to rebuild the 200b sitting on my self for 10 years. Many have stated the poor performance of the series one and b , the series two is compatible with a series ll 400 and 700 in basic design . My goal is a tweeter amp well this one not a series ll so I’m gutting it and fitting a...

good work I was trying to upload that yesterday . Rane has great articles in their notes section

Well I’ll start just heading home from 4 weeks in California. Glad to leave as it is a crossover state. Only thing I wish I could have done was to join the Death week Drag and Drive event

Sounds good Mark Just grease the one back bearing Light oil the front ones

Well you can pull the rubber cap off it while it’s together. You need light food safe silicon grease or oring grease not oil. I’ll see what the viscosity is for you once that is lubed right it may work properly. If no calibrating mean full disassembly I’ve build extension cables and makes this...

Hi Mark there are a few issues with getting the the linear tracker tuning. First the bearing on the back of the carrage need lubrication of right type Also tuning the pots is not easy as they glued them at the factory pm me and we can talk about what’s needed

Al and I have the DBX PA2 running for 6 months or so. i’m blown away with it. Enjoy Lee