kante1603

Hello all,


have received and built this kit now.
Everything went very well,kit was complete in parts,nothing missing.
Adjustments  were easy,all was close to spot on from scratch,absolutely no issues.
Be prepared the solder nails for the test points need some serious force to put in,so just be careful while inserting them.
It also might be a good idea to let the unit heat up for some minutes,then repeat the balance procedure (which is the last step in adjusting it) two or three times and compare left and right channels.Mine were totally spot on then (within a 0.001VAC resolution of my dmm).
Mechanically everything fits like a glove.
Listening tests on monday in the studio.


Another great kit you have done Jean-Pierre,congrats,keep them going!


Attached a pic of proof,


best regards from munich,germany,


Udo.


Edited typo.
« Last Edit: March 09, 2019, 02:14:13 PM by kante1603 »


Spiritworks

Agreed, I finished mine and calibrated first channel yesterday. Hoping to get second channel calibrated and balanced later on today.

Finished , and working.
« Last Edit: March 10, 2019, 04:24:09 PM by Spiritworks »

Leon

LA502 trimmer question
« Reply #322 on: June 08, 2019, 08:23:19 AM »
Just finished a LA502 build and try to calibrate it now. I have a question about the trimmer pots that I hope someone here can answer.

On the guide it says turn all the pots CCW all the way for about 20 turns. I think I have done double that count but none of them seem to have a stop. How do I know they have reached the end?

Thanks in advance for the hep.

Best regards,
Leon

kante1603

Re: LA502 trimmer question
« Reply #323 on: June 08, 2019, 08:54:00 AM »
Just finished a LA502 build and try to calibrate it now. I have a question about the trimmer pots that I hope someone here can answer.

On the guide it says turn all the pots CCW all the way for about 20 turns. I think I have done double that count but none of them seem to have a stop. How do I know they have reached the end?

Thanks in advance for the hep.

Best regards,
Leon
Hello,


in a quiet environment you can hear them click at their end position.
There‘s no mechanical stop,if unsure just turn them more than 20 turns ccw.
Or measure between the inner and outer legs,one side should show approx. the full ohms value,the other close to zero ohms.


Best regards,


Udo.

Leon

Re: LA502 trimmer question
« Reply #324 on: June 08, 2019, 10:58:41 AM »
Hello,


in a quiet environment you can hear them click at their end position.
There‘s no mechanical stop,if unsure just turn them more than 20 turns ccw.
Or measure between the inner and outer legs,one side should show approx. the full ohms value,the other close to zero ohms.


Best regards,


Udo.

Thanks Udo for the clear explanation.  It is very helpful! Just finished my calibration and everything works great.  I am moving onto a second build and soon I will have a stereo pair.

Thanks again,
Leon

dp

The compressors... LA502... CP5176... I eventually want both but can only get one at a time.

Which would you recommend first, mostly for tracking on vocals, guitar and bass? Ultimately I want to go with the tried-and-true Preamp->1176->LAxA chain for vocal tracking.

Of course I eventually want two of the Pultec EQs and the bus compressor for all my 2-bus duties too! But that comes later still...  8) These all seem to be the best bang-for-the-buck on the DIY market today.

dp

I went with the CP5176 and so far.... two thumbs up!

Build was not difficult, just time-consuming... lots going on in there. I had one tiny issue that took 30 seconds to fix on power-up tests but that was totally an oversight and all my own fault.

Now I'm looking for gear to sell so I can buy the opto-compressor.  8)