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對付懶蛇 / Treating a Lazy Rattlesnake

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alfcat 發表於 2008-2-14 15:55:07 | 顯示全部樓層 |閱讀模式
不知是否近日天氣太冷, 條蛇無 D 生氣. 點算? 不如用 72 V 電來電一電佢.

嘩, 電咗十幾個鐘頭後, 果然係唔同. 不過小朋友千萬唔好學 .... 要有特別訓練的.

Perhaps the weather is getting too consistently cold these days, the DiamondBack has gone into a hypenation state ... really dull sound and not lively at all.

How to wake it up? Try 72V battery pack. What is the result? After charging it for just > 10 hours, the sound is totally different. More Bass, more Details and Clarity improved as well.

Kids are reminded not to try this experiment out at home without supervision as this is hazardous to health ....

CAT

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 樓主| alfcat 發表於 2008-2-14 17:39:53 | 顯示全部樓層
Mis-typed a word above ... "Hibernation" ... NOT "Hypernation", ha..ha.. Half asleep
accphoto 發表於 2008-2-15 10:36:51 | 顯示全部樓層
72V battey pack ? where do you get it from ? Is it just connect postive to the RCA plug ?
 樓主| alfcat 發表於 2008-2-15 12:07:42 | 顯示全部樓層
Dear Accphoto,

No, I made the battery pack myself. It is not available anywhere.

You go to Ap Liu Street, search the stores selling batteries. Look for a type of battery by GP known as 23AE. They sell for around $ 3 a piece and $14 for five. If you get them at Japan City or so, they sell for $ 5 a piece or more.

Connect six together to get the required 72V.  

No, I did NOT connect the battery to the RCA plug. I am afraid that this may damage the equipment. There is no voltage when measured at both RCA terminals.

I will leave my contact number at your email. You can call me and let's discuss about the construction of this cable.

CAT
 樓主| alfcat 發表於 2008-2-18 08:50:09 | 顯示全部樓層
Dear Accphoto,

Did you get a new cable and try my experiment out? I consulted my colleague who is a physics expert. He said my experiment will work in practice.

The sound quality of that DiamondBack did improved over the days. More than five of my colleagues came to my home and they said the difference is very significant, even with my budget equipment.

CAT
dryfry 發表於 2008-2-19 17:39:53 | 顯示全部樓層
Dear CAT hing,

its great,

would you share how to attach the battery terminal to the plug, many thanks

please pm if it is not convenience to post to public

thanks again
 樓主| alfcat 發表於 2008-2-19 22:08:31 | 顯示全部樓層
Dear DryFry,

The AudioQuest DiamondBack has 4 cables inside. Three of these cables are insulated with TELFON. One is the drainwire. You can look at it at AudioQuest website.

I just use AudioQuest's DBS logic as stated in their website. The RED wire inside the DiamondBack I use as Signal, the BLACK as Signal Ground. The Transparent one I use as +72V. The Drainwire I use as -72V.

Be aware this is NOT a complete circuit. The 72V wires only connect at the SOURCE side. For my construction, the 72V wires do NOT touch the casing of the RCA plugs. Make sure you don't detect any voltage along the cable after your construction or else you may damage your amp or CD player.

CAT
dryfry 發表於 2008-2-22 13:12:06 | 顯示全部樓層
Dear Alfcat,

Thank you for your selfless sharing.

Just a bid confusing about
"The 72V wires only connect at the SOURCE side."

You mean that the source is the battery source not the source end of the input plug?
In other words, that's the "Transparent one " and the drain wire were connected to the battery + and - only and isolated from any of the conductive parts ? right ?

thank you again and nice to meet you
 樓主| alfcat 發表於 2008-2-23 22:55:57 | 顯示全部樓層
Dear dryfry,

Please check pm / email at Hi Fi Fever

CAT
corolladv 發表於 2010-2-4 13:19:07 | 顯示全部樓層
Dear Ching,

Can post more information for the connection of 72V battary pad to the RCA plug. I found interest to add it to my diy AQ rca cable.

Many thank.
 樓主| alfcat 發表於 2010-2-5 15:08:54 | 顯示全部樓層
Give me your email and I will send you the information after Sunday. VERY busy these few days
corolladv 發表於 2010-2-5 18:11:41 | 顯示全部樓層
alfcat ching,

My email : corolladv@yahoo.com.hk

many many thx.
 樓主| alfcat 發表於 2010-2-8 14:23:06 | 顯示全部樓層
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