Cary SLP-05 - rectifier tube questions


Hey All,

Several days ago, my 05 began to blow all the fuses (HiFi Tuning tweak ones too.. damn it!) and wouldn't power up. I found out that it was the rectifier tube that was blown and I swapped it out for a local 5AR4 tube that I found at my neighborhood Guitar Center.

Swapped it in and VOILA! Music again!

ONLY... this time, it sounded different - imaging wasn't as clear, there was a "dirty background" to it all, the voices didn't respond the way it used to from my memory when I turned the volume up, the stage was set further back behind speaker plane...

I am using Martin Logan Summits which are ruthlessly revealing of any upstream component.

So I began suspecting that there was a change and it might be because of the crappy rectifier tube that I just swapped in. A search on audiogon and many other forums seemed to validate my opinion and that rectifier tubes DO change the sound! I didn't know that! So I had NO bias going into this...

So now, I'm in search of the perfect 5AR4 rectifier tube.... a lot recommend the Mullards, but are there any other recommendation for tubes that are not so overly pricey?

The Cary 05 uses only 1 5AR4, so in that sense, I'm lucky I won't have to buy a pair...

Help me out, thanks!
joey_v
Well your other issue is you say you blew the 40 dollar fuses.. Did you put the 30 cent home depot specials back in? If so you have changed 2 things, lost the old rectifier and lost the better fuses.. So this could be a combination of things possibly to get your sound back totally. And I agree with probably trying the Solid state replacement cap mentioned above vs. replacing the rectifier tube due to costs, and many of the rectifiers unless a Really good one, maybe like the mullard are very soft sounding and do exactly as you explain pulling the soundstage back.
If you do happen to buy a SS rectifier, and it doen't ruin the sound of your pre-amp, Please post the results. There's a first time for everything!
A SS rectifier doesn't ruin the peamp, does it? The Cary 05 has a slow warm up period.. I wonder how the SS rectifier will do with this process.

Any suggestions as where to get these Mullards, also?

Thanks,
Joey
I'm too lazy to type! Here's a site that mentions some pluses and minuses to SS rectifier subs that apply to ANY tubed circuit: (http://www.dairiki.org/HammondWiki/SolidStateRectifiers)