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The Entry Level Stax Thread - Page 62

post #916 of 1196
Quote:
Originally Posted by Tus-Chan View Post
 

How do I replace the capacitors in my SRM-T1?

 

That's a pretty broad question... do you mean how to physically do it? or Which caps should be replaced? or something else?

post #917 of 1196
Quote:
Originally Posted by shipsupt View Post
 

 

I don't think they'll be sending it set up for the UK market (you could confirm that with a quick email to PJ), but what exactly you'll need to do will depend on which system you are considering.  Do you have an idea which package you're after?

 

I am looking at the SRS-2170 system

post #918 of 1196

It uses an external PSU.  Like I said, I'd email PJ and ask if they send units set up the voltage in Europe.

 

If not, it's not a big deal at all to buy a pretty good and inexpensive replacement power supply.  There is lots of information buried in this thread and the big STAX thread about what you'd need, and people will help you locate as well... 

 

You'd certainly still be way ahead on cost even if you get banged for customs and have to buy a new power supply.

 

Good luck.

post #919 of 1196
Quote:
Originally Posted by shipsupt View Post
 

 

That's a pretty broad question... do you mean how to physically do it? or Which caps should be replaced? or something else?

 

How do I a) find replacements for the capacitors and b) remove the old ones and install the new ones.

post #920 of 1196

My cosmetically challenged pair of el cheapo SR-5N or NB (not sure which) that I got off german ebay along with an SRD6/SB arrived today. Hooked it up to my old denon power amp, let it charge for a few minutes and was in heaven - certainly a keeper...

 

Minus:

 

- cosmetics - 3 out of 4 type plates missing, the 4th is mounted upside down 8-O

- no manual, box or whatnot

 

Plus:

 

- no channel imbalance

- pads are like new - maybe replacements

 

Sweet mids, highs are just right for my taste, bass is less than my sextetts (to be expected) but certainly not shy. Very comfy on my head - probably due to the great pads.

The question remains, is it N or NB - is there any way to find out w/o documentation?

Also I could use a longer cable or extension - are the plugs or whole cables available someplace?

 

Joachim


Edited by jring - 1/17/14 at 6:41pm
post #921 of 1196
Thread Starter 
Quote:
Originally Posted by noxa View Post

I am looking at the SRS-2170 system

You should be able to buy a 240 Vac to 12 Vdc wall wart in the UK.
Just make sure the output pin (the one that plugs into the Stax amp) is the right size and has the right orientation.
Try to get a linear power supply, not a switch mode power supply.
post #922 of 1196

Hey all,

 

I think this'd be considered entry level.. Magnavox 1A9217. It's a OEM version of the Stax SR-3 from the 1970's. 

 

I just restored it (busted wires, blown element) and paired it with a Lepai LP-2020A+ tripath amp. Luckily when I got it, it came with the energizer. I even went ahead and replaced the corroded speaker leads with new OFC copper. Sounds darned good for being 30+ years old despite me being cheap and buying the $16 Lepai amp. I had to leave the darned thing charge for 3-4 days though as it sat in someones basement for 20+ years.

post #923 of 1196
Quote:
Originally Posted by Chris J View Post


Actually it's your opinion against someone else's.
Right?

Which part?

 

Quote:
Originally Posted by Tus-Chan View Post
 

How do I replace the capacitors in my SRM-T1?

 

 

Quote:
Originally Posted by Tus-Chan View Post
 

 

How do I a) find replacements for the capacitors and b) remove the old ones and install the new ones.

 

Ok before you go replacing capacitors like building a puzzle, why are you replacing the capacitor? Has it failed, measured poorly i.e poor ESR levels and ripple, replacing a capacitor that was installed incorrectly by the previous idiot? 85'C/105'C application i.e hotspot in amp?

 

uf = microfarads determines the capacitance or electrolytic charge your capacitor can handle up to, voltage determines the power current going through it. It is ok go with a over rated capacitor in both capacitance and voltage but don't go under the current specs especially with voltage, in some PS applications like computer based switched ps circuits, increase the capacitance too much and you're hitting up the wall of what the diodes can handle but in the unregulated design ps stage of your Stax amp shouldn't be a big deal.

 

RS Components, partconnexion, Digikey, mouser, ebay, Jaycar, your local diy electronics or hobby store should all house the stuff you need unless you need some fancy boutique stuff you order from the sites like RS, partsconnexion or mouser or any other sites such hificollective. All up to you.

 

Quote:
Originally Posted by Zombie_X View Post
 

Hey all,

 

I think this'd be considered entry level.. Magnavox 1A9217. It's a OEM version of the Stax SR-3 from the 1970's. 

 

I just restored it (busted wires, blown element) and paired it with a Lepai LP-2020A+ tripath amp. Luckily when I got it, it came with the energizer. I even went ahead and replaced the corroded speaker leads with new OFC copper. Sounds darned good for being 30+ years old despite me being cheap and buying the $16 Lepai amp. I had to leave the darned thing charge for 3-4 days though as it sat in someones basement for 20+ years.

Pics PICS!! :D

post #924 of 1196

Yo,

 

Here's the pic of it now restored to working order:

 

post #925 of 1196
Quote:
Originally Posted by Zombie_X View Post
 

Yo,

 

Here's the pic of it now restored to working order:

 

 

I like. Thumbs up.

post #926 of 1196

Hey,

 

Thanks, I think the amp might need upgrading down the road, but right now it does the job really well.

post #927 of 1196
Nice, it's not even ugly.
post #928 of 1196
 
Ok before you go replacing capacitors like building a puzzle, why are you replacing the capacitor? Has it failed, measured poorly i.e poor ESR levels and ripple, replacing a capacitor that was installed incorrectly by the previous idiot? 85'C/105'C application i.e hotspot in amp?

 

Because it's the only other thing aside from the tubes I can think of that would cause one of my channels on the amp to distort and fuzz out at higher volume.

post #929 of 1196
Quote:
Originally Posted by Tus-Chan View Post
 

 

Because it's the only other thing aside from the tubes I can think of that would cause one of my channels on the amp to distort and fuzz out at higher volume.

 

Have you changed the tubes or cleaned the pins? Have you measured the DC offset using a DMM and adjusted it accordingly via the trimpot inside? I smell bad resistor or bad tube. A cap can also be the culprit if in the PS stage/section, is the case with most of the vintage amps where hum would be hearable with a saturated cap.

post #930 of 1196
Quote:
Originally Posted by DefQon View Post
 

 

Have you changed the tubes or cleaned the pins? Have you measured the DC offset using a DMM and adjusted it accordingly via the trimpot inside? I smell bad resistor or bad tube. A cap can also be the culprit if in the PS stage/section, is the case with most of the vintage amps where hum would be hearable with a saturated cap.

 

Yes, I have already done all of that.

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