Yamaha PM2K - HA1457 SIPs - Replacement Available?

timjimbaker · Jan 27, 2011

Hey all... I have a few dead Hitachi HA1457 SIPs in a Yamaha PM-2K console. It appears these little guys are difficult to come by and because they have such a high voltage rating, 50V, I can't seem to find anything that could take their place. The PM2000 has great headroom and lowering the supply voltage would kill that. I'm stuck. Does anyone have any suggestions? Thanks a bunch. Best regards, Tim.

flyingeyepro · Jul 30, 2014

Hi Tim,

Did you ever find a solution? I may have something for you.

Thanx
Chris

mjrippe · Jul 30, 2014

flyingeyepro said:
Hi Tim,

Did you ever find a solution? I may have something for you.

Thanx
Chris

I'm not Tim (Jim?) but I am interested to hear what you've found.

714audio · Nov 24, 2014

i would like to replace my ha1457 with your mod... could you get me the details. I no expert by anymeans but my son has built me some opamps (hairball audio) and i've been telling him about this flying eye guy. BTW, your pm2k looks amazing!

mitsos · Nov 24, 2014

https://flyingeyepro.wordpress.com/

Looks like he made a little PCB to adapt a modern footprint opamp to the HA1457 footprint.

Yamaha PM2K - HA1457 SIPs - Replacement Available?

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Yamaha PM2K - HA1457 SIPs - Replacement Available?

Help Support GroupDIY Audio Forum:

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