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Nice !

For safety, I'd use a streamer with Wifi (Wiim streamer is the one I use), cheap and sound quality is excellent. The streamer could plugged to Tape/Aux

I vote 2A3 since you already have high sensitivity speaker.

Yes, I want to upgrade the K500-5000 one and unfortunately I don't have the LCR meter. On the W2 the 0,2 and 4 are used. Thanks! for helping Mike!

Yes. The crossovers are not the same. One has 3 inductors _K500-5000, the other has 2 inductors and 1 autotransformer (5 tabs: 0,1,2,3,4) K1000/6/50000-W2.

does T2A equivalent to T2?

I am looking for the T2 auto transformer. Could anyone tell me where the source to buy or wind it. Thank you much!

Sadly, people only realize the value and appreciation of someone' talent after he/she dies!

I have adjusted the bias back to -42V. I installed the 10K trimmer so it allowed me to change the bias whenever I put in another set of power tube :)

Gadget, you are right, the 12AX7 tube was bad. Replaced with a good 12AX7 tube then both power tubes bias the same. However, one power tube has red plate still has tiny red spot on the plate rip. I swap both power tube with another pair. Now everything go back to normal. Thank you Gadget &...

Thanks John! I did tide the socket pin yesterday. Will do on the coupling cap. I have thought on the coupling cap, too tired and rely on Russian Y40-9 would not gone bad easily.

Thanks Gadget! Will do that today when I get home.

Yesterday after long day at work, I went home and turned on my system_ pair MC30, Marantz 7T and Carver CD player. When power up, I hear a pop sound on one MC30 unit, not too loud but it gave me the notice then I hear just a little buzz on the speaker. I pressed play on the CD player, the sound...

Joe, How hard to replace those RCA jacks? Any tip to share. Thank you much in advance!

Do not service any home vintage audio equipment any more. Only commercial...

Beautiful!

It's just my experience. I use 5751 tubes instead 12AX7 for phono stage. It sounds clear and more quiet. The one I am using 5751 Raytheon windmill getter. You could used GE triple mica (Military ver.)

:lurk:

tube has fat base. Could be Mullard ???

Thank you LL!

I have RX-505 and it's needed service. Could anyone know any place in Houston TX or near by provide services I am appreciated for you help. I also willingly ship out as needed. Once again thank you all in advance! Binh

I have the same pair of Stancor A-8072 and I am building a pair mono block Geogre Gott G30U.

Hi all, I just wonder anyone here have had chrome plating and silk screen service for MC30 chassis. I appreciate all of yours input. You all have a wonder weekend and Happy Father Day! Binh

Dear Multichamp12, I just got a pair of A-8072 OT and I really like your project. Could you share your final schematic and photos of your project. Thanking you in advance! Binh