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Old 09-07-2008, 12:35 PM
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MystikCabs MystikCabs is offline
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Harman Kardon hk 330i

I have a Harman Kardon hk 330i stereo reciever. Just wondering if it's worth hanging on to for tunes out in the garage or is it better than that?
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Old 09-07-2008, 12:46 PM
jpdylon jpdylon is offline
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The 330i was not one of the better designs. They run very hot and usually need some resoldering. Also, the driver stage in the amplifier uses very underrated transistors that can easily fail. The tuner is OK, but really overall there is better out there from HK.

Unless you can get it for a song I would pass IMHO.
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Old 09-07-2008, 01:04 PM
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Quote:
Originally Posted by jpdylon View Post
The 330i was not one of the better designs. They run very hot and usually need some resoldering. Also, the driver stage in the amplifier uses very underrated transistors that can easily fail. The tuner is OK, but really overall there is better out there from HK.

Unless you can get it for a song I would pass IMHO.
I had a problem with the transistors in the driver stage of my PM-640 and Ecluser and Terra1 worked on a procedure to replace the transistors with a higher rating to reduce heat. I also have a 330i, should work the same on it.
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Old 09-07-2008, 01:06 PM
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http://www.audiokarma.org/forums/sho...d.php?t=169829
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Old 09-07-2008, 01:52 PM
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MystikCabs MystikCabs is offline
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Hmmm, good to know, thanks!
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Old 09-07-2008, 04:04 PM
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terra1 terra1 is offline
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I actually didn't replace any transistors on the PM640 because they didn't have a complete set at Fry's.

So, I just replaced two original 56 ohm resistors with 1/4 watt 220 ohm resistors I got at Fry's. A pack of 4 cost 95 cents. After that the temp in the PM640 driver heat sinks dropped from about 69 degrees centigrade to 38-40 degrees centigrade.

I also have an HK 330i and it doesn't seem that hot at least not as bad as the original PM640 before replacements. The heat fins on my HK 330i measure about 29-33 degrees centigrade, and the heat sink on the single transistor is about 51-57 degrees centigrade at its hottest point.

But up to you if you want to get something better. I would try it while you have it though.

It's one of the sweetest, warmest sounding receivers I have and nice detail too.

The only shortcoming is it sounds better than it's pillbox looks. You may want to adjust the amp's idle current to optimize it. I think I noticed a more 3D richer sound.
http://manuals.harman.com/hk/Service...k330i%20sm.pdf

If you do some research, vintage HK can be a crapshoot. I passed on an HK 330B awhile back because of tuner distortion (not just static) during a demo. The seller later reflowed the solder and said it was fine, but I still passed based on a combination of price, cosmetic condition and didn't want to waste another trip.
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Old 09-07-2008, 09:02 PM
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Quote:
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I actually didn't replace any transistors on the PM640 because they didn't have a complete set at Fry's.
Woops I misspoke!
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Old 09-07-2008, 09:41 PM
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Originally Posted by Sir.Byrd View Post
Woops I misspoke!
Not a biggie since we were talking about replacing the transistors too.

It's just that as I said, Fry's was out of some transistor replacements. So I at least replaced the resistors as recommended by ecluser. That alone brought the temperature down.

So I'm not that concerned or in a rush to do the transistors.
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