Justin & Jerry's Hifi Blog

[Marco]

A 9V battery should be a 9V battery, Jerry, so those ones on ebay look like a bargain. Why not snap ‘em up and try them? For the price, it’s a no-brainer!

Incidentally, if you decide to keep the Lentek in the long-term, there’s a lot more you can get from it by applying some judicious mods - thus done, it firmly enters the hi-end head amp territory, sonically.

If you haven’t seen this thread before, check it out: http://theartofsound.net/forum/showt...entek-Head-Amp

Skip to post #40 for my review.

Marco.

[jandl100]

- what about rechargeable batteries? Cheaper in the long run, Dave DJSR reckons the Lentek gets thru a battery in about 5 hours!

[Marco]

5 hours? Not in my experience (with Duracells)

You know how much music I play, working from home, especially vinyl, and I’ve had it on all day (say from 10am to 5pm), for a few days, before noticing any appreciable difference.

You can tell when things are starting to go downhill, as the sound becomes a little soft (with the volume needing to be raised on your preamp, in order for the same dynamic impact to be retained from before), and the red test-light starts to noticeably dim. Incidentally, don’t be tempted to use the test light too often, as doing that drains the battery the most!

Some cheap no-make supermarket batteries may only last 5 hours, but not Duracells. Much depends, of course, on how hard you ‘drive’ the unit, so the louder you listen to music, the more demand is put on it, therefore battery power will be lost more quickly.

In any case, you’ll soon be able to tell for yourself now, when you’re using it, how long the battery lasts. Re-chargables are defo a good idea

Marco.

[jandl100]

Ah, good ol' Dave.

Yep, I think I'll invest in some Duracell rechargeables.

[jandl100]

Hmm ... further research shows that the rechargeable 9 volters can hold 150 mAh, whereas those non-rechargeable "Industrials" are rated at 550 mAh and so are probably much more suitable for the application .... gosh, I wish I knew what I was talking about.

[struth]

you could get a large rechargable battery like the beresford boys do and rig it up. long term itll save a fair bit of cash and time

[User211]

Hm only 136,708 hits and 123 pages.

[DSJR]

- what about rechargeable batteries? Cheaper in the long run, Dave DJSR reckons the Lentek gets thru a battery in about 5 hours!

I apologise for the exaggeration there Jerry , but it would be a good idea I think to keep a few decent grade PP3's in reserve. I did also try to make up a mains supply for mine, but got hum through the system I couldn't remove. Admittedly, this was a long time ago now and the regulator wasn't high grade.

[jandl100]

Thanks Dave - I've bought a pair of rechargeable batteries - good suggestion from a foe on another site.
Seem to work well - one lasts at least a couple of days of normal play, so it all works OK! I've not noticed any sound quality differences compared to ordinary Duracell PP3.

[Marco]

Did you try those ‘industrial’ ones from ebay, Jerry?

Marco.