Nick G modified Lentek Head Amp

[Nigel]

Just wondering if a 12v SLA Yuasa security alarm battery would be a possible alternative? Would the extra voltage create problems?

[Nigel]

Marco's observations about the fresh battery sounding superior are spot on. I use a similar phono head amp from Rogers. I replaced the battery yesterday, the new replacement measured 9.7v, the old one 9.0v. I would love to try one of my 12v Yuasa's but worried I might cause damage.

[awkwardbydesign]

I just read this- http://taperssection.com/index.php?topic=157574.0

Re: A 9V Battery is NOT!
« Reply #6 on: August 14, 2012, 01:54:54 PM »
FWIW the Powerex rechargable 9V batteries have a nominal voltage of 9.6 but when new, fully charged and without load are between 10.5 and 11.5V. The Nbox doesn't seem to work well with the rechargable 8.4V but does great with alkaline or these Powerex ones. So if anyone needs a batter in the shape of a 9V and needs more than 8.4, it might be worth trying the Powerex.

EDIT: Branding is Powerex, not sure why I was thinking Maha.
EDIT: I just checked again and they are Maha Powerex. I give up. :P
« Last Edit: August 14, 2012, 01:58:03 PM by johnw »

[Marco]

There's no doubt that any battery powered audio device is only going to perform at its full sonic potential when the battery powering it is operating at maximum capacity - and as has been mentioned, listening tests have confirmed this.

It's one of the reasons why, despite the obvious advantages with no mains in the equation, I've never gone the battery operated phono stage route, quite simply because I'd always be aware of the degradation in sound quality, as the battery slowly loses power - and that's just too much of a 'head fuck'...

However, despite that, considering the small outlay involved, I'd URGE any DL-103 owner, looking to maximise its sonic potential, to try using it with a Lentek MC head amp (particularly a judiciously modified one), and especially if they have a valve MM phono stage, as the results obtained are sublime and indeed superior to those I've achieved to date with any standalone active solid-state phono stage!

Marco.

[Smegger68]

This is highly interesting... I have one of these Lentek amps and I am rather partial to the sound it produces. Will have to look into this in detail!

[Marco]

Go for it, James, as I assure you it's worth it!

Lenteks and Crofts are a marriage made in heaven anyway, but a judiciously modified Lentek is even better... Next time I'm down your way, visiting a friend in Ystrad Mynach, I'll pop by and bring my Lentek with me, and we'll try it in your system

Marco.

[jollyfix]

Next time your down Ystrad ( i assume to see Anthony), give us a shout, i visit Ystrad regulary .

[Marco]

No worries, Dave - will do... And yes, it'll be to visit Anthony

Marco.

[The Barbarian]

The A&R 'HA10' was a good un anorl..Used mine in the late 80's for a month or so, never seen the light of day since



http://www.audiosmile.com/forum/Manu...T%20PREAMP.pdf

[Smegger68]

If you're talking about a certain Anthony who builds some lovely valve amps then I am acquainted with the gentleman. He did some repair work on my Audion a couple of years back. You'd be more than welcome to teas and biscuits while we listen to that Lentek