Weiming
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Posts posted by Weiming
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Hi John,
That is interesting. Do you know anything about the Cornwall crossovers then? It appears that in the Type B and B2 crossovers, the squawker and tweeter are wired out-of-phase. What's the reason for this?
Thanks!
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Anybody knows the reason why the squawker and tweeter's positive leads are connected to the negative input lead?
What's the significance and purpose for this?
Thanks!
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OK, for those interested in constructing a Type B crossover, here is the schematic
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One thing good about Bottlehead is the forum which is akin to that of Klipsch where there is a lot of sharing of info, opinions and experiences by numerous gurus and friendly, helpful people from all walks of life.
Oh yeah, and the stuff sounds good too
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I think the most cost-effective RCM is the KAB-EV1. All you have to do is hook up your home vacuum cleaner to it and use arm power to spin the records while cleaning.
I have one and it is just as effective as the VPIs although not as convenient to use especially for large number of records. But, it is significantly cheaper and you can easily store it when not in use.
http://www.kabusa.com/INDEX_RC.HTM
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Here is a link to some good reading materials on vacuum tubes:
http://firebottle.com/ampage/bbs/recread.cgi?sub=ga
A comparison between transistors and tubes from the Institute of Electrical & Electronic Engineers:
http://www.spectrum.ieee.org/select/0898/tubet1.html
I think the most important thing is to go out and listen (if you can) and not base your purchase solely on other people's opinion as one man's meat is another man's poison.
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Yea, I meant Isopropyl Alcohol. Useful stuff for cleaning solder joints and vinyl
Thanks for the compliment. It actually took me more time to procure the hardware, drill the required holes and finish the chassis than to actually solder it. Now my next step is to do some cap swapping with the new Audio Note PIO.
quote:
Originally posted by lynnm:IPA=Isopropyl Alcohol ??I thought Weiming was talking about India Pale Ale! - No wonder my Power Amp smells odd!P.S. Weiming I took a look at the pictures of your system - Nice Work!
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Hi deang,
Paralleling 10 & 5 ohm resistors does not give you 0.3 but instead 3 1/3 ohms.
The power rating of the resistors just means that it can handle 5W before it goes poof. If you parallel the 2 resistors together, the current flowing through each resistor is reduced as opposed to if they were connected in series. Simply put, you don't have to be concerned about the power rating of the resistors.
As for the accuracy of the resistors, those bar type resistors are ceramic types and I don't think their accuracy is that good. So even a 5.5 ohm one will probably fluctuate between +/- 5%. I suppose the best way would be to select resistors with values as close as possible to the original wherever possible.
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Just some personal observations and experience here.
I have never been able to get a shiny finish if I use eutectic 63/37 solder. However, it is easier to work with as the melting temp. is lower. Silver-based solder requires a higher wattage iron and the worst to use are those lead-free kind unless you have a soldering station like a Hakko, Goot or Weller.
Oh ya, if the solder has a flux resin core, then there is no need to use additional flux to condition the joint to be made. Just make sure the surfaces are clean.
Another thing is to remove the excess flux after soldering by cleaning the job using a cotton bud dipped in IPA.
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Check out PS Audio's Power Plants. Besides power conditioning, it is a power generator. Similar to those units used in hospitals and labs to ensure a steady power supply but at a lower cost. Way cool stuff.
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Some other places for you to consider are:
Audiophile parts and stuff
Audio Note (based in UK)
THL Audio (based in Taiwan)
General parts and stuff
Hope these links are of use to you.
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For those with the moolah, here is a rare, exotic and beautiful Thorens turntable for sale at Audiogon. Wish I could afford it though
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Glad my link from the AA High Efficiency forum paid off for you
I am sure you will thoroughly enjoy these speakers!
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Hi mike,
Check out this link for some DIY vinyl cleaning recipes.
I use a combination of distilled water, IPA, a surfactant (easily available from most photography accessories shop) and a mild non-abrasive detergent (dish washing detergent).
Do not use tap water as it might have some mineral content that might scratch the vinyl or some other contaminant that is detrimental to the vinyl surface.
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Hi dean,
If you want to know more about the soldering procedure, you might find this link useful:
Hope this helps.
quote:Originally posted by deang:What I am really interested in is learning how to solder, and actually learning something about how these things are put together and work. If I find I have an 'upgrade' at the end of it all -- well then, that's all the better.
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I too did the same thing for my crossovers. For the inductors, I used Solen air core inductors. You can visit their website here to check the values and types you need (depending on budget).
If you wish, you can see my rebuilt crossovers through my system link and follow the link on that page to my Yahoo photos page.
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Hi taylor,
One major advantage of the Paramours is the level of technical support one will receive through the Bottlehead forum, something akin to that found here.
I sincerely believe you will not go wrong with this combination
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Hmm...four come to mind. They are the Bottlehead Paramours , the Consonance Ella , the Consonance Joplin and the Audionote Kit 3
quote:Originally posted by kenratboy:Oh, screw that, thats WAY too expensive!!! What are good kits BELOW $500?
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This message has been edited by Weiming on 06-16-2002 at 12:25 PM
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Looking good so far hetmann! Keep us updated on your progress
kenratboy, this is the Moondog kit available from
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1. What Heritage speakers have you owned, currently own, or want to own?
1982 Cornwalls.
2. What was your age when you first purchased a Heritage series loudspeaker?
24
3. What is your current age?
25
4. Why did you choose Heritage loudspeakers over another Klipsch model?
Require high sensitivity to drive my 2.75W amps. Also the Heritage series are well-regarded for quality of sound and construction.
5. If you currently own some Heritage loudspeakers, and could purchase some more Klipsch speakers(new or used), which ones would you purchase? Why?
If I have the room and resources, then it will be the Klipschorns.
6. Do you think the upcoming Jubilee should become part of the "Heritage" line, since it was also designed by PWK?
No comments.
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This message has been edited by Weiming on 06-05-2002 at 08:16 AM
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I just helped a friend replace a K-77-M tweeter on his Cornwalls. Not sure where he got the replacement diaphragm but it came complete with the black assembly, making replacement easier as it consist of like what TPD said, just de-soldering the old connections and knocking out the ruined diaphragm assembly.
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Check out the part 1 review for Al K's crossovers for Klipsch Heritage speakers at: Enjoy The Music
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Hi,
I clean my vinyl using the economical yet effective KAB-EV1 available from KABUSA .
Basically, one would need to wet clean a record only once. However, before playing a record, do a dry clean using a carbon fiber brush.
The TNT Audio website gives a good overview on record cleaning and maintenance. Do check it out at http://www.tnt-audio.com/clinica/fluids.html
Another good site to read up on is
http://www.gcaudio.com/Archives/recordcleaning.htm
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This message has been edited by Weiming on 04-02-2002 at 10:53 PM
Tube Help - Where Do I Start
in 2-Channel Home Audio
Posted
Since you are in the UK, you might want to check out World Tube Audio Design at:
http://www.worldaudiodesign.co.uk/
The benefits of buying a kit is that clear instructions are provided along with everything needed to complete the project. It also more or less guarantees that whatever you build will work and be of some standard
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Solstice