Mesa's SPAX7A preamp tube

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stokes
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Re: Mesa's SPAX7A preamp tube

Post by stokes » Fri Oct 12, 2012 8:08 pm

I got mine from a guy who's site is called KW Tubes in Ukraine.Great guy to deal with,when I first found him,there was no paypal,I would place the order and send a money order and I would get the parts before he even got the money.I like the PETP tubular caps better than the PIO's.K73-158 .02 630v,a box of 50 was under 10 bucks.Great stuff,but like I said,stay away from the electro's

212Mavguy
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Re: Mesa's SPAX7A preamp tube

Post by 212Mavguy » Sat Oct 13, 2012 5:25 am

In what way did these k73's earn your preference? I looked 'em up, still pretty affordable, and lots of different ratings with that poly material.
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stokes
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Re: Mesa's SPAX7A preamp tube

Post by stokes » Sat Oct 13, 2012 7:46 am

Well,I never actually tried his PIO's.I have a bunch of Astron PIO's that I got from an old local supplier when he went out of business.I was not impressed with them,although I didnt pay a lot for them,I didnt see tham as being worth paying a premium for.So I guess I shouldnt say the PETP's are "better" than the PIO's,but for the money,the PETP's are every bit as good as any Mallory.I think I still have a bunch of the NOS Astron PIO in .047 and a couple .02's that were used and have shorter leads,nothing wrong with them,if you want to try them send me a pm I'll send them to you.I really paid nothing for them.Before he retired he used let me go into his basement and pick my parts,$5 for a small bag,$10 for a big bag.When he was closing,he wholesaled his entire stock,let me take whatever I wanted,as you can imagine,I cleaned up,filled 2 shopping bags that day,even got a Triplett emissions tube tester and an old RCA scope he found before they emptied his wharehouse.PM an address and I'll send you some PIO's and a couple of the commie .02's to try.

212Mavguy
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Re: Mesa's SPAX7A preamp tube

Post by 212Mavguy » Mon Oct 15, 2012 8:07 pm

Aww, gosh, I stocked up on .01's, .15's, .22's in PIO's already, but thanks! I bet the PETP's are closer to the polypropylene stuff like the 716p's in orange drop, but a bit smoother?
212Mavguy

stokes
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Re: Mesa's SPAX7A preamp tube

Post by stokes » Mon Oct 15, 2012 9:15 pm

Not at all like orange drops,to my ears.Much smoother,more like the Mallory 150's.

212Mavguy
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Re: Mesa's SPAX7A preamp tube

Post by 212Mavguy » Tue Oct 16, 2012 3:42 am

I'm still learning my caps...I'm thinking like the 6ps-716p series, in orange drop, they are the ones used in D- style builds with their smooth OD tones.
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stokes
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Re: Mesa's SPAX7A preamp tube

Post by stokes » Tue Oct 16, 2012 8:45 am

Okay,I see where you're coming from.In high gain circuits I guess the orange drops are good.Kind of a strange thing to say on a Boogie forum,but I'm not a big fan of high gain,I go for more vintage tone.I find the orange drops to be somewhat sterile in a Tweed circuit.I had a guy bring me a 57 Tremolux that someone had butchered.Put a PT with no 5v winding so he made a ss rect and recapped with all orange drops.Funny thing tho,he didnt change the filter caps because of their "vintage value".He didnt pay a lot for the amp and didnt want to spend a lot to get rid of the hum.I talked him into new filter caps and a 3 prong power cord.When he came for the amp,he wasnt 100% in love with it,he had some really good old tubes in it but felt it wasnt as "rich" sounding as he thought it should be.I talked him into letting me get those orange drops out of there,I used russian tubular .02's for all the coupling caps and one Mallory .1 in the PI and the difference was big.I left the orange drops in the trem circuit,no big deal there.I didnt charge him for the coupling caps and he ended up bringing me 5 more amps for filter caps and general service,couple of tubes,3 prong cords.Now I'm not trying to convince you that the orange drops arent good,I know this is all subjective.I do love my 2C+ and it is loaded with orange drops and I wouldnt think of changing that in that amp.Nothing wrong with the PIO's either,just wouldnt pay the premium most people ask,but those russian ones are well worth it at their price.Apologies to the OP for the hijack here,I guess we got carried away,Mav.

212Mavguy
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Re: Mesa's SPAX7A preamp tube

Post by 212Mavguy » Tue Oct 16, 2012 11:05 am

yeah we did, apologies from me also.
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