Mackie HD1501 schematics for power amp REV (E) wanted

[imil4o]

Hi!If you have it,I need schematics for power amp REV (E) for HD 1501.I tried Mackie support site,but nothing for HD 1501. Thank you in advance!

[Jazz P Bass]

Have you tried calling Loud Technologies direct?

Tel: +1 425 892 6500
Tel: +1 866 858 LTEC (866 858 5832)

[imil4o]

Thanks for the help.The support have only REV F00,wich I have downloaded from Mackie the last mounth.There is a differance in the shematics U6 in Rev F00 is LM317T but on the one I have is used TL431.The Rev is E00

[Jazz P Bass]

As the LM317T & the TL431 are both adjustable voltage regulators, I would have to ask where are they being used?

Heck, if that is the only change from one Rev to the other, consider yourself lucky.

The Rev E TL431 is capable of passing 100ma's of current

The LM317T is 'internally compensated' but still it's good for 1.5As.

They may have had issues with the TL431.
Don't know.