Line-R 600VA Automatic Voltage Regulator (AVR)

hi guys, im looking for AVR for some little setup. Friend said get a 5000VA for China will do, cheap and good. But cant find any info on this.

however, I found above from APC, design for computer devices, but since it AVR take tune to 230V, i assume it will suitable for stereo device too.

http://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=LE600I&tab=compare

Do share wat u think about it.

I use Koss 1000VA bought from computer store. That's the highest rating I can find around without costing my arm and leg.

The purpose is to make sure the output voltage to your equipment fixed around 230V. So far doing a good job for my tube amp.

Have you all tried to listen to the sound of your systems with and without these computer AVR boxes ?

Care to share the experiences ?

None that I can notice. Just give me the peace of mind for the tubes to have stable input voltage.

arremie wrote:None that I can notice. Just give me the peace of mind for the tubes to have stable input voltage.

... in this case, how about probing the tube voltages with a multimeter so see if there is any fluctuation due to changes in the incoming voltage ?

Wouldn't know how to do that my friend. I'm not that techie

arremie wrote:None that I can notice. Just give me the peace of mind for the tubes to have stable input voltage.

Just play a passage of music with large-scale dynamics and quick transients, with and without ...

bassraptor wrote:

arremie wrote:None that I can notice. Just give me the peace of mind for the tubes to have stable input voltage.

Just play a passage of music with large-scale dynamics and quick transients, with and without ...

Maybe some folk's systems are so superbly well "isolated & refined" such that all these AVR gadgets won't change the sound...

Ha ha ... I remember a well-known designer of 300B amps saying he wished he could power his amps directly off the sub-station!

well probably the substation is still sharing power with those chinese made fridge and computers. How about a dedicated synchronous generator with a ground rod that gives hospital grade 0.1ohm and a large superflywheel spinning reserve conveyed by superconductors.

Well I don't expect much from a RM80 AVR. As long as the voltage doesn't spike too much, that will do

i heard Koss 1000VA wil hav tick-tick sound with voltage regulation kick in. tat why my friend said computer AVR is not suitable for stereo.

arremie, how abt urs?

how much does Line R 600 or 1200 cost in rm?

dylan wrote:i heard Koss 1000VA wil hav tick-tick sound with voltage regulation kick in. tat why my friend said computer AVR is not suitable for stereo.

arremie, how abt urs?

None of that for me. At least not something I can hear coming from speakers or from where I'm seated

Those ticking noise from those AVRs are the relays switching the various taps on the transformer to step up and step down the voltage accordingly.

What they don't tell you is that those switchings are actually more detrimental to the hifi equipment's health, as the relay switchings actually introduce alot of harmonic distortion on the AC lines.

This actually results is more wear and tear on the amp's power supply caps and also its own power transformer windings.

Furthermore, the step-variation of these relay-based AVRs are quite crude anyways. For example, 200 to 215V, its on tap-A, 210 to 225V, tap-B, 220 to 235V, tap-C and so on and so forth. Notice the hysteresis (overlap) in the various zones, this ensures that the AVR wont go ticking like a clock when the incoming power fluctuates about a certain voltage. Hence in this respect, you're never even going to get stable and accurate 230V at all.

Now you all know. Cheap AVRs demystified.

And IMO, if you're playing a system thats equivalent or better than a NAD3020 class of equipment, you should be able to hear how these AVRs kill the dynamics and bass ability of your hifi system already. That was what bassraptor was subtly hinting at in the first place.

All these cheap computer AVRs only give the uninformed consumer a false-sense of security. And in case if you've never heard any ticking
noises from the AVR, this means your home power supply is quite stable
already and that AVR is just doing nothing except robbing the hifi
system's true musical potential.

I know of a certain hifi peddlar who would sell you RM30K speakers of one particular brand, driven by Amps of another particular brand as well (all very respectable brands mind you), but will also supply a set of these cheap-n-nasty locally made voltage stabilisers (Teletron brand, if not mistaken) to go with the entire system... Go figure.

If you truly want a purely honest 230V output, you'll need to get
the real stuff, like a PurePower box or one of those manual massive
locally made "PowerTrans" units where you manually turn the knob to get
the proper output voltage.

I stand corrected. Mugen was right. I remove the AVR last nite and the sound actually better without the AVR.

I never hear any ticking from AVR before even with heavy load. Guess power in my area pretty stable.

gee, mugen always gets all the credit ...

azri wrote:how much does Line R 600 or 1200 cost in rm?

it is rm189 and rm199. as some advised, probably u wont go for this product range.

bassraptor wrote:gee, mugen always gets all the credit ...

...share with you lor .... here u go ... CHEERS !

you can bring the alcohol-free wine when you come over ...

er.. back to question, for setup below 5k, do we need power conditional/AVR ?

If yes, wat shd be the entry product that we should look for?

Hi

i read with great interest Mugen and it is nice to see a knowledgeable demystifyier for the crooks feeding on bona fide persons with the noble hobby of music listening.

However, I went to check the products of pure power and powertrans and could not find any.

Maybe he Mugen will be nice enough to give us the exact products and the accompanying info to enlighten our purchase.

Thanks again. Cheers

San

the need for this really depends much on your setup & hours of listening. for instance if you have a setup thats worth more than rm10k (considering the mark-up prices) than maybe its worth having it, that if you ever heard someone rm8k integrated being burned by voltage instability. another example if you listen to music like straight hours, probably 3~4 hours everyday & worried if those unstable voltage destroy your rm5k setup than have a go on that stabilizer. its very rare to hear (or even to none) some equipments being repaired because of this voltage fluctuation which in the 1st place you cant really tell whether its really does happens through out your listening period. i found that its hard to get those stabilizer here in down under & its almost impossible to find one. further more many vintages equipments here last longer here & imo its more to the climate. try to have an air conditioned room for listening pleasure & cooler environment & i really feel your setup can last longer.. imo off course..

san sew wrote:Hi

i read with great interest Mugen and it is nice to see a knowledgeable demystifyier for the crooks feeding on bona fide persons with the noble hobby of music listening.

However, I went to check the products of pure power and powertrans and could not find any.

Maybe he Mugen will be nice enough to give us the exact products and the accompanying info to enlighten our purchase.

Thanks again. Cheers

San

PurePower is From canada:
http://www.purepoweraps.com/


PowerTrans, its a locally made product. Available from Audio Image PJ.
"Serious users" include some fellow forummers here if they want to own up.


Some other power conditioning stuff are Richard Grey Power Co. , sold locally by CMY.