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 [Bulk] PA2V2 portable headphone amp from Canada, Philips KOTH bundled package added in

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TSDAViS
post Oct 30 2005, 11:29 PM

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QUOTE(kkm @ Oct 30 2005, 11:25 PM)
Not necessarily. May be better to get a regulated power supply, will cost you a little bit more, but the voltage will be stable...
*
Any idea or sample pic or specs?
nles
post Oct 30 2005, 11:39 PM

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yeah dun mind spending abit more, as long as dun spoil the amp. low cost adapter later reduce the life of the amp
March05
post Oct 30 2005, 11:54 PM

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QUOTE(DAViS @ Oct 30 2005, 11:14 PM)
I believe it is hard to find those power adaptor which is just purely supply 2.4 volts and also if you study more on the rechargeable batteries. Usually they need higher voltage to charge.
That's what i was worried about. To charge up the rechargeables the pd across the batteries will have to be higher than 2.4 volts. This will obviously mean that the supply going to the amp circuit is also higher than 2.4 volts as long as the adapter is plugged in and powered up. That's when the noise will creep in.
Unless the idea is that you don't use the amp while it is in charging mode.

Some adapters do already have regulated power supply, but as kkm pointed out, these are sold at a slight premium.


kkm
post Oct 30 2005, 11:56 PM

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QUOTE(nles @ Oct 30 2005, 11:39 PM)
yeah dun mind spending abit more, as long as dun spoil the amp. low cost adapter later reduce the life of the amp
*
On second thought, mebbe should look at the circuitry first.

If the adapter is only charging the batteries and not supplying power directly to the amp, then it is probably not so critical.
TSDAViS
post Oct 31 2005, 12:45 AM

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I guess all this question need to re-pass back to Gary let him answer it as I am not the product designer biggrin.gif
PoorMan
post Oct 31 2005, 09:45 AM

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Count me in for SS2 too. Thanks. Just let me know when.

SS2, McD:
1. kkm
2. March05
3. deng8895
4. creap
5. Categg
6. nles
7. PoorMan

Times Square, Borders:
1. Medufsaid

Desa Petaling:
1. Davis tongue.gif

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1. bossnass15


PoorMan
post Oct 31 2005, 09:48 AM

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Erm ... correct me if I'm wrong. The transformer is only required if you intend to charge the rechargeable batteries thru the amp. If I'm charging my NiMH somewhere else, then I don't need the transformer right?
March05
post Oct 31 2005, 10:05 AM

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QUOTE(PoorMan @ Oct 31 2005, 09:48 AM)
...The transformer is only required if you intend to charge the rechargeable batteries thru the amp...
i think u got the idea. But it is a bit troublesome to have to keep unscrewing the casing of the amp everytime u want to take out the batteries to replace or recharge. Ultimately the casing screw threads are going to get worn off if u do it everyday.

this is a KISS product, so we may have to accept some design limitations. I can probably live with a little bit of extra noise during the charging period anyway.


TSDAViS
post Oct 31 2005, 12:05 PM

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http://www.electric-avenues.com/audio8.html

Perhaps we have to revisit his website again to find out more satisfaction
answer. smile.gif
March05
post Oct 31 2005, 01:54 PM

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QUOTE(DAViS @ Oct 31 2005, 12:05 PM)
Perhaps we have to revisit his website again to find out more satisfaction
answer. smile.gif
okay, good suggestion. I just took another longer look at the page and it raised one more question after answering most of the others.

"A more strict, internal power supply circuit filters and eliminates the 60 Hz hum and distortion sounds some owners reported when listening with the AC adapter plugged in."

Our problem here would be a 50Hz hum instead of the 60 Hz one the filter takes out.

But in any case, it's not a serious problem, since i don't think i'll be using it while in charging mode anyway. Not if the batteries can last 100 hours between charges. thumbup.gif

Categg
post Oct 31 2005, 02:35 PM

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Just wana ask here.. when are we getting the amps? Thursday, friday or... ? rolleyes.gif smile.gif
TSDAViS
post Oct 31 2005, 02:42 PM

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QUOTE(March05 @ Oct 31 2005, 01:54 PM)
okay, good suggestion. I just took another longer look at the page and it raised one more question after answering most of the others.

"A more strict, internal power supply circuit filters and eliminates the 60 Hz hum and distortion sounds some owners reported when listening with the AC adapter plugged in."

Our problem here would be a 50Hz hum instead of the 60 Hz one the filter takes out.

But in any case, it's not a serious problem, since i don't think i'll be using it while in charging mode anyway. Not if the batteries can last 100 hours between charges.  thumbup.gif
*
I don't think that's a problem too smile.gif
Now scouting the adapter in my hometown electronic store.
QUOTE(Categg @ Oct 31 2005, 02:35 PM)
Just wana ask here.. when are we getting the amps?  Thursday, friday or... ?  rolleyes.gif  smile.gif
*
Post office close from 3rd Nov till 7th Nov... I guess you roughly know when...
Categg
post Oct 31 2005, 02:47 PM

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QUOTE(DAViS @ Oct 31 2005, 02:42 PM)
Post office close from 3rd Nov till 7th Nov... I guess you roughly know when...
*
Oh right.. totally forgot about it.. paiseh.. sweat.gif
TSDAViS
post Oct 31 2005, 03:52 PM

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QUOTE(Categg @ Oct 31 2005, 02:47 PM)
Oh right.. totally forgot about it.. paiseh.. sweat.gif
*
Don't worry. Human tends to forget. So do I too. smile.gif
TSDAViS
post Nov 1 2005, 12:42 PM

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To make ourself syiok. (kind of masturbating tongue.gif)
Check this out the review for Grado RA-1.
http://202.186.86.35/audio/story.asp?file=...a&sec=audiofile
TSDAViS
post Nov 1 2005, 11:22 PM

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Just now went to my home town local HiFi shop to check the price for Whaferdale 9.2 a pair (RM10xx only!!!! Cheaper than KL alot) and also borrowed their tools soldered a 1 meter long 3.5mm male to male cable using Maruni Professional Microphone cable. biggrin.gif Boss only charge me RM10 for material cost.
Categg
post Nov 2 2005, 12:49 AM

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QUOTE(DAViS @ Nov 1 2005, 11:22 PM)
Just now went to my home town local HiFi shop to check the price for Whaferdale 9.2 a pair (RM10xx only!!!! Cheaper than KL alot) and also borrowed their tools soldered a 1 meter long 3.5mm male to male cable using  Maruni Professional Microphone cable. biggrin.gif Boss only charge me RM10 for material cost.
*
Hmm.. i havent even start looking for cables.. probably would get canare cables + switchcraft jacks since ppl in this forum seems to like them alot..

This post has been edited by Categg: Nov 2 2005, 12:49 AM
TSDAViS
post Nov 2 2005, 01:47 AM

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QUOTE(Categg @ Nov 2 2005, 12:49 AM)
Hmm.. i havent even start looking for cables.. probably would get canare cables + switchcraft jacks since ppl in this forum seems to like them alot..
*
Hehh... I just can't wait to get the amp on hands faster *cursing post office close for so many days tongue.gif*

Canare + Switchcraft? Sounds cool and technical to me.
Will do a search on it.
truckerjones
post Nov 4 2005, 12:25 AM

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So is there a second bulk? Because if there is, put me down for 2.
TSDAViS
post Nov 4 2005, 09:45 AM

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QUOTE(truckerjones @ Nov 4 2005, 12:25 AM)
So is there a second bulk? Because if there is, put me down for 2.
*
Currently there are 4 units in the order, if reach to 10 then only I do the bulk again.

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