QX-949 BOM

[sabrefencer]

I have a question about the driver transistors that are listed in this threads BOM.The Ksa1220ays / ksc2690ays which are listed as replacements for the drivers. The ksa1220ays is no longer available. I was wondering if the Toshiba TTA004B / TTC004b would be an acceptable replacement? I already have a bunch of these already in my stash and just wanted to know if I can use them.

eBay seller Peace, love and music also goes by affinityforartifacts has the 1220/2690s. Not fakes. He is also an AKer. I just rebuilt my PA assy and used these. They fit inside the small heat sinks nicely.

 

[EastPoint]

I have them but the TTA/TTC are fine too.

 

[topgun]

I have them but the TTA/TTC are fine too.

Thanks. Since I already have a bunch of those Toshiba’s, I can mark them off on my list of parts for the big restore of my 949a.

 

[sabrefencer]

Be careful to watch the pin-out. My original 2SD327/328 and 2SB527/528 were BCE, and the KSC2690 and KSA1220 were ECB, so they needed to be flipped when installed. The markings face the heat sink.
Not sure if this is an issue for the Toshibas.

I'm still working through my 949. I had to repair the "scope" which was not easy. Now doing lamps (from EastPoint), and will do the preamp and eq, and power supply boards next.

Let me know if you have any questions.