Murata regs + Caiman = Problem??

[HighFidelityGuy]

Well, the verdict's in on the Dexa regulators vs. Murata's...

the Murata's were the culprit, the whistle is gone.

Took my Dac over to Tirna Electronics last night to let Jimmy Dripps to let him do the work for me.
(I struggled to remove the Murata's myself and quickly decided best to leave it to the experts )
Got home plugged the Dac in last night - ahhh...thats better.

Speaking with Jimmy about my dac problems, he gave his theory on what might be causing the noise problem with the Murata's.
Not everyone with them has had the same problems myself and others have had.
Why?
Jimmy thinks its a case of bad luck having a mismatched pair of regulators which operate at a frequency too close to one another.
He says (and I misquote) that this could cause oscillation in the regulators leading to an an audible "beat" which manifests as background noise when playing the Dac.
I mentioned that I would be putting up my Murata's on AOS as an upgrade for someone and he was generous enough to swap over one of my regulators for a different one from his spares.
A nice gesture and a genuinely nice bloke.

Have to say as well, over and above the whistling being gone my Dac is sounding better than ever.
Read up on these Dexa regs and they are offered as upgrades to existing kit by several 3rd party modding websites - even for kit like the Rega Saturn cd player and Wadia transports.
An upgrade to the Saturn..Wadia? Must be good then!
Forum posts on DIY sites too talk about the Dexa's being a great upgrade to existing kit, so think I've made the right choice fitting them in my Dac.

One question though...?
I've always found new components tend to improve over time, is this the case with these Dexa regulators too?
Good improvement in soundstage focus and detail right out the box, but I'd say there was a shade less "impact" and front to back stuff from what I remember before?
Overall a good bit better than before, but just something I noticed.
Should it potentially improve over time?

So really...I've modded my Dac now about as far as I can take it, nothing left to do - extremely happy to have my (improved) sounds back.
With all the SB Touch software mods and my improved Dac, things are sounding good.

Hi Gary,

That's excellent news! Many thanks for the update. I'll get some Dexa's ordered ASAP. Where did you get yours from?


Cheers.

BTW, your PM box is full.

[Gazjam]

Hi Gary,

That's excellent news! Many thanks for the update. I'll get some Dexa's ordered ASAP. Where did you get yours from?


Cheers.

BTW, your PM box is full.

Hi Dave,
I got them from Partsconnection in Canada. Quick delivery - cheapest prices.
UK sellers looking for £30 each + delivery, I paid abut £45 delivered for them both.

Buy with confidence.

[MartinT]

Very good news, Gaz, I'm glad that the Dexas worked for you.

I think I may have been the very first person to put Dexa regs into my Caiman and there has been a small flurry of Dexa upgrades of late. My Caiman continues to sound superb

[Canetoad]

As does mine.

[Gazjam]

Very good news, Gaz, I'm glad that the Dexas worked for you.

I think I may have been the very first person to put Dexa regs into my Caiman and there has been a small flurry of Dexa upgrades of late. My Caiman continues to sound superb

Cheers martin.

Did you find the Dexas changed at all over time?
Just wondering about burn in n' stuff.

[MartinT]

Not to anything like the extent of the coupling caps, which took much longer to settle down.

[Gazjam]

Thanks Martin.

I've been out and about for a couple of days and left the system running till I got back.
Came home this morning and its sounding great.


happy camper here.

[HighFidelityGuy]

My Dexa's have arrived and I'm hoping to get them installed tonight. I'll report back ASAP. Wish me luck.

[Canetoad]

Luck!

[Gazjam]

My Dexa's have arrived and I'm hoping to get them installed tonight. I'll report back ASAP. Wish me luck.

No luck needed Dave, the background noise will be a thing of the past.
Wish I could say the best way to get the Murata's out - Jimmy Dripps did mine.

Good step up in sound quality with the better regs - well worth it.

Good luck!