Idler Wheel Turntables |
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回覆 (1264): Not yet idler wheel, but Open-Reel ........
just to make it clear, what you are inducing with increasing inertia is increasing the effective mass of the tonearm. As Master Kong has quite rightly pointed out, for low compliance cartridges, this will give you better performance.  
 
examples are Denon 103 5 x 10-6 and SPU 8 x 10-6 both are low compliance, where Transfiguration is 15 x 10-6 Ortofon A90 16 x 10-6, Goldfinger 16 x 10-6  
 
However, I note sonic improvements on linear tracking arms with the counterweight far back as well !
daiwok
11-05-04
22:13:35
回覆 (1263): Not yet idler wheel, but Open-Reel ........
Bobui,  
 
moving the counterweight further back increases the inertia of the tonearm and this helps in increasing dynamics and tracking for medium to lighter tonearms for lower compliance cartridges in general. However I also find this is true for medium compliance cartridges as well.  
 
Master kong, I cannot recall exactly did we experience the same performance on the FR64s with the dropped counterweight ? this is also a method to increase inertia on the arm.  
 
daiwok
11-05-04
22:00:00
回覆 (1263): SPU inflation
Buy it now USD 1999
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=320694163301&ssPageName=ADME:B:SS:US:1123#ht_3612wt_1141
daiwok
11-05-04
21:55:28
回覆 (1262): Not yet idler wheel, but Open-Reel ........
My typo error last. I meant change the body of a high compliance cartridge that comes with soft suspension, lower tracking weight into a new heavy weight body. Would the cartridge still behave as high compliance?
bobui
11-05-04
21:27:55
回覆 (1261): Not yet idler wheel, but Open-Reel ........
Ok, I did missed out the details on the need to balance the tonearm before you can swing it left and right with the tip of your fingers around the headshell.  
 
What I was trying to demonstrate is in fact the problem with mismatch tonearm to cartridge and when you have to move the counter weight so far back to make sufficient correction to enable proper tracking weight, you may jepodise the free movement of the cartridge required to track well. Yes, that really is part of a catridge, tonearm compliance matching.  
 
I was really trying not to get into the subject of something that may raise people eyebrows. And something I may not understand well enough to give comments.  
 
Ok, Ok, here is what i was hiding. What if you change the housing of a lower compliance cartridge that has soft suspension and require lower tracking weight with a heavy body. Is the cartridge still behave as lower compliance?  
 
bobui
11-05-04
21:05:28
回覆 (1260): Not yet idler wheel, but Open-Reel ........
Hi bobui,  
 
I think the test you mentioned was not a fair one. If you balance the arm with the cartridge so that there is 1g of VTF, then you take away the cartridge; there is no doubt the arm will rise up at the headshell end, and you need to apply force with your finger to push it down. Now, if you then move the (same) counterweight even further back, of course you need to apply even more force in order to push the arm down.  
 
In the cast of the cartridge, we are talking about using a heavier counterweight close to the pivot, or a light one further away. So, to do a fairer test, I think you should start out balancing the arm with the cartridge twice, once with a heavy counterweight and then with a lighter one, where they both give 1g of VTF, and you mark the positions of the two counterweights respectively. Take away the cartridge and repeat your test with the 2 counterweights at their respective positions and see what you get.  
 
I think you will still feel that the arm is slightly less free with the lighter counterweight further away from the pivot, as the effective mass is slightly higher, but the difference should be a lot less than the test you proposed.  
 
Your question regarding which setting the cartridge feels more comfortable with, I think it depends on the cartridge. Cartridges with low compliance like the Denon 103/103R will match better with arms of higher effective mass. Cartridges with high compliance, like the Shure V15 Type IV, would like arms of lower effective mass better.  
 
 
thekong
11-05-04
19:49:21
回覆 (1259): Not yet idler wheel, but Open-Reel ........
Guys, correct me if I am wrong. I always thought that the further the counter weight away from the pivot, less freely for the arm to swing. Unless a tonearm should never move freely around the record when the cartridge is reading the grove.  
 
Example: disconnet the cartidge and swing the arm with your fingers by touching the headshell. First experiment/setting is you have a counter weight very close to the pivot and second is the counter weight futher away from the pivot. Which setting you think may require more force for you to swing and stop the arm from moving?  
 
Here come second question: Which setting your cartridge feel more comfortable with?
bobui
11-05-04
18:33:45
回覆 (1258): Not yet idler wheel, but Open-Reel ........
>it's always better to keep the counterweight towards the very end of the arm.<  
__________________________________________________________________  
 
I think it may not be “always” better, but just a case for the Denon 103/103R. The 103/103R has a very low compliance, hence needing to match with arms with high effective mass. The Morch, and I believe the Syrinx, are of medium effective mass, so using a small counterweight further away from the pivot will increase their effective mass and fit the 103/103R better. If you are using really heavy arms like the FR60 series or diawok’s MIWI, then this arrangement may not be best.  
 
____________  
 
Thanks for putting money into my pocket ^___^!!!
icefox
11-05-04
17:01:10
回覆 (1257): Not yet idler wheel, but Open-Reel ........
 
>it's always better to keep the counterweight towards the very end of the arm.<  
__________________________________________________________________  
 
I think it may not be “always” better, but just a case for the Denon 103/103R. The 103/103R has a very low compliance, hence needing to match with arms with high effective mass. The Morch, and I believe the Syrinx, are of medium effective mass, so using a small counterweight further away from the pivot will increase their effective mass and fit the 103/103R better. If you are using really heavy arms like the FR60 series or diawok’s MIWI, then this arrangement may not be best.  
 
thekong
11-05-04
14:53:49
回覆 (1256): Not yet idler wheel, but Open-Reel ........
Sing, hinhin 's 80c faceplate were sent to retreat.  
 
E, well this Tandberg RTR got probliem on one channel caused by transportation, he may consider to join mono club!  
 
Thanks for the info on 301, Eddie.  
 
^___~  
 
Vash
11-05-04
13:16:47
回覆 (1255): Not yet idler wheel, but Open-Reel ........
Two size. A roughly 30% larger than the one I see in your arm. The other a friction smaller. I have ordered 3 sets for myself. Can ask for 2 more sets. They will be copper/same material as orignal and spray in matt black similar to the arm tube.  
 
bobui
11-05-04
12:58:34
回覆 (1254): Not yet idler wheel, but Open-Reel ........
I find the sound more open without the add on ring?  
___  
 
It's not that I want to use it. In fact, base on previous lecture I have had from daiwok, it's always better to keep the counterweight towards the very end of the arm. My problem is the counterweight alone is not heavy enough to achieve balance with the MIDAS 103, hence the use of the mass ring.  
 
You get me think about how the mass ring should be installed though. May be I should move the mass ring and install in towards the small counterweight. Problem is it may be overly heavy for that position of installation.  
 
I would be interested to know what kind of counter weight you are going to made.
icefox
11-05-04
12:47:51
回覆 (1255): Not yet idler wheel, but Open-Reel ........
Vash,  
 
There's someone offering to sell his Garrard 301 with plinth, SME & Dennon at R33. Maybe your firend can check it out.
evp1312
11-05-04
12:44:40
回覆 (1254): Not yet idler wheel, but Open-Reel ........
HinHin's 80C is without golden front plate?
TaiMonSing
11-05-04
12:21:00
回覆 (1253): Not yet idler wheel, but Open-Reel ........
Very lovely looking Lenco and Syrinx. I am making some counter weight for Syrinx. icefox, you want some?  
 
As witht eh Syrinx, I find the sound more open without the add on ring? Experiment and share your thoughts please.
bobui
11-05-04
12:17:10
回覆 (1252): Not yet idler wheel, but Open-Reel ........
icefox den, welcome to join Lenco club :)
TaiMonSing
11-05-04
12:10:19
回覆 (1251): Not yet idler wheel, but Open-Reel ........
Oh, this is one admirable all Tandberg setup. On the R-T-R, any service and calibration done? I have recently experience the power of R-T-R, it's quite lethal but it seems to be a ultra-high maintenance endeavor. My friend ends up reading books on recording and have to fiddle with oscilloscope and test tones for calibration of the unit. Alignment of the tape head is also critical, it makes day and night difference.  
 
However, when it is done right, that analogue sounding feel is beyond description.  
 
Thanks to daiwok's help, my very first Lenco in its own stock plinth is voicing now, it does give me good dose of the very similar analogue sounding feel and the maintenance on the combo is more manageable to my stupid hands.
icefox
11-05-04
11:54:31
回覆 (1250): Not yet idler wheel, but Open-Reel ........
For sure, he is one of the best on hair dressing !!  
 
And his Midas-103 is stilling waiting for the new version of Midas Touch.  
 
Vash
11-05-04
11:00:43
回覆 (1249): Not yet idler wheel, but Open-Reel ........
Time for a haircut ! ^__^
daiwok
11-05-04
10:55:57
回覆 (1248): Not yet idler wheel, but Open-Reel ........
Another 一哥, hinhin from 土瓜灣/紅磡Hi Fi同好會 who hunting for his first idler wheel TT for a while, recently got an Open-Reel !  
 
Photobucket  
 
It is one of my recent favorite brand, Tandberg, very comprising....  
Photobucket  
 
Almost a full set of Tandberg....  
Photobucket  
 
Some media....  
Photobucket  
 
And some more....  
Photobucket  
 
But actually, the main course,is a pair of RCA mono block ! Very nice matched to Tandberg 3012 pre-amp..  
Photobucket  
 
Afterwards, hinhin show us his recent purchase, a pair of Fischer mono pre., No hum nor noise, very good condition indeed !!  
Photobucket  
 
And, this is his den with Chartwell LS3/5a.  
Photobucket  
 
^____^
Vash
11-05-04
10:51:17
回覆 (1247): Audio Sculpture!
I think we can plan something special !
daiwok
11-05-03
12:19:56
回覆 (1247): SPU A
daiwok
11-05-03
11:42:49
回覆 (1246): Audio Sculpture!
 
plinth-wise, I wonder if these 50 + years old 樟木 can be of any service ...  
 
Photobucket
evp1312
11-05-01
19:43:26
回覆 (1245): Audio Sculpture!
talk about inflation ! @[email protected]  
 
Photobucket  
 
http://cgi.ebay.co.uk/Garrard-301-Audio-Origami-PU7-Tonearm-and-Plinth-/110669455061?pt=UK_AudioTVElectronics_HomeAudioHiFi_Turntables&hash=item19c469ded5#ht_7094wt_1282
daiwok
11-05-01
14:56:15
回覆 (1244): Audio Sculpture!
If Salvation turntable has multi-arm design that must be more attractive, whatever, 14" platter+slate plinth+rim drive & speed control = Fantasy sound , any trail demo can offer in HK? hehe
TaiMonSing
11-05-01
14:11:24
回覆 (1243): Audio Sculpture!
I saw a friend picked up a piece of this like this at Duck St yesterday! @[email protected]
icefox
11-05-01
12:01:27
回覆 (1242): Canare Connectors
These are just plain vanilla Canare F Series connectors.  
The only problem is they have not been glorified by the audio community, local or abroad, and can be had too cheap.  
Construction wise, they are vastly superior to a lot of big name RCA connectors 10 times the price.  
 
http://www.canare.com/ProductItemDisplay.aspx?productItemID=3
feikeung
11-05-01
09:57:03
回覆 (1242): Terminator T3Pro and Salvation turntable
I have been using this arm ever since met Kris for the very first time. The arm was not officially released then from my friend Vic whom I have worked closely on some of the tweaks of this arm. Vic is a very good friend of mine and some one who I tend to spend time with when I am in UK. He has promised me to make the trip to Hong Kong this year and I am sure he will.  
 
The latest Tomahawk arm is the last tweak we have done together, but what is more important is the official launch of his Salvation turntable which is rim drive and with a rim drive motor which is more impressive than the Versus from Terres. I have seen and listened to the development of the rim drive motor system for the past 2 years and it gets more and more impressive. The Salvation turntable sits on a nice piece of slate and the platter is 14 inches at the widest section. The whole set of the Terminator arm and Salvation turntable is under GBP 2500 and I know its a giant killer.  
 
I just need to get myself organised as several brothers have requested a GROUPON for Vic's products ^__^
http://www.trans-fi.com/terminatortonearm.htm
daiwok
11-05-01
09:21:42
回覆 (1241): 臂線頭
But F09 may best fit for your DIN-RCA project if use on TT to phono thanks to it's handle extends over the outer contact sleeve for improved EM shielding.
Vash
11-04-29
13:13:28
回覆 (1240): 臂線頭
F-10 looks good.
icefox
11-04-29
13:09:45
回覆 (1239): 臂線頭
Better than WBT ? I am also a light weight kind of guy. I would be interested in some good light weight RCA for some new projects .....
daiwok
11-04-29
13:02:17
回覆 (1238): 臂線頭
Well, both Deltron and Amphenol will be fine.  
 
Anyhow, I'd prefer to go for Canare F series phono plug. Very good feeling on "抽、插" 。 U can get Canare plug from AcousticsEng. in Apliu st..  
 
^___^
Vash
11-04-29
12:56:36
回覆 (1237): 臂線頭
some UK types of RCA phono plugs as well  
-------  
U mean those Deltron RCA plug? Any type to suggest, I want those that is lightweight, not heavy. I hate those WBT.
icefox
11-04-29
12:49:31
回覆 (1236): 臂線頭
Be remind to order some UK types of RCA phono plugs as well, there are plenty of choice.
Vash
11-04-29
12:30:10
回覆 (1235): 臂線頭
You save my day! Thanks Vash 同學!  
 
Any 同學 need this plug? I am going to order. PM me the number your required.  
 
Cheers.
icefox
11-04-29
12:09:59
回覆 (1234): 臂線頭
A suitable one.
http://hk.element14.com/switchcraft/05dl5mx/connector-din-audio-plug-5way/dp/1266136
Vash
11-04-29
12:01:57
回覆 (1233): 臂線頭
I did made a DIN cable recently and sorry to say, both RS and Farnell got no suitable model in LOCAL stock. Element14( ex. Farnell) sent it to me from their Germany warehouse indeed.  
 
Vash
11-04-29
11:59:32
回覆 (1232): 臂線頭
Any classmate know where I can get this DIN-like connector? RS or Farnell?  
 
icefox
11-04-29
11:14:36
回覆 (1231): Interesting article on Gain Structure!
一哥就嚟三頭六臂
ken1967
11-04-28
11:38:14
回覆 (1230): Interesting article on Gain Structure!
玩q哂,未冇野玩?吾得吾得 ... ^^
TaiMonSing
11-04-28
11:12:58