finally finished this tt. Its been through several iterations that i wasn't happy with, this one i am happy with.
IMG_20191203_133304 by anthony cresswell, on Flickr
The background on this is that it was one of transfi vics early salvation turntables using a diyhifisupply bearing and platter and a teres verus idler motor and psu.
nigel (shaman on here), who commissioned it had some things he wasn't entirely happy about with the sound, namely an edge to the sound that slate gives. I know what he means, my jbe has the same slight hardness to it that the salvation did.
Custom tt, verus idler motor, origin live conqueror mk3c, dynavector dv20x2L by anthony cresswell, on Flickr
The first iteration i did was a skeletal type, i made 4 pods which were joined together with steel rods, one with the arm on, one at the front and one to the left arranged in a triangle with the 4th in the centre with the bearing in. abit like an oracle delphi. more like the idler i built years ago out of an lp12 and a gl69 that some of you may remember. It was crap. bass was loose, and it sounded dull. so i then did a solid plinth that was 4" square by 14" long. basically joined the bearing and arm together. it was better, but there was something off about it.
This one is more conventional than either of the other 2, but blends enough mass with enough damping.
Custom tt, verus idler motor, origin live conqueror mk3c, dynavector dv20x2L by anthony cresswell, on Flickr
Next was to get it dialled in once it passed muster. The bearing is an inverted design, i.e, the bearing contact point is at the top rather than the bottom, meaning 90% of the weight of the platter is lower than the contact point which aids stability. I had to play with the height of the drive wheel to get it exactly as i wanted, its driving the platter at the same height as the contact surface so it reduces lateral bearing load to the minimum giving some audible benefits in terms of speed stability and noise.
Custom tt, verus idler motor, origin live conqueror mk3c, dynavector dv20x2L by anthony cresswell, on Flickr
Also tweaking the drive angle by adjusting where the motor sits gave similar benefits, making sure the motor sits exactly square with the platter and plinth improved speed stability and noise.
Lastly, the position of the motor in line with the arm pivot centre and the bearing centre cleaned up the imaging. That was the idea that dictated the plinth shape. Ive done this before with another custom tt that i did for my dad for his 50th birthday, that one had the motor positioned between the arm and the platter bearing rather than on the outside like this one, and it did have a noticeable benefit in terms of the top end, bass tightness and imaging. Its interesting when the motor is moved. i tried it in a few different positions and it was definitely better in line with the centres.
Got there eventually, and its very even handed top to bottom which is what i wanted.
The arm is a 12" origin live conqueror mk3c, nigel had got a good deal on it but had nothing to put it on, this deck was designed around it. I am not a fan of origin live arms to be honest, they seem to engineer things in a way that is somewhat at odds with my ways of thinking (but they make lots of money off them and i make piss all so who am i to comment ) but this one is rather nice. similar to martins 12" jelco on his g99 that i did, and the 12" ortofon and jelco on pauls lenco and garrard. Its sound is more precise than those arms, more "hifi" for want of a better word, but it matches with the dynavector dv20x2L thats in it. And i am a big dynavector fan so alls good for me.......
and that clear acrylic platter looks the dogs
Thats the nice thing about doing this for a living, i get to play with stuff that is a million times outside my own personal price bracket, if only for a little while
Oh and i got hold of a little bear mc step up for 20 quid which is surprisingly good. I have one of nicks lda step ups here that is in use on something else and i couldnt be arsed to start pulling cables out to connect this up to it, every time i do i seem to bugger something up and end up with a load of hum and mysterious problems that introduce a ghost into the machine. its not a bad step up at all, it would be not bad at all if it was 3 times the price to be honest. it could be made better with some tweaks, a better psu would probably make a big difference. If you wanted to try mc and needed one its a no brainer to get you going.
very pleased with this TT build
custom built TT finally finished
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custom built TT finally finished
Analogue: oracle delphi sme 309, jbe series 3 cx unipivot dv20x2l, roksan xerxes tabriz vm750, jvc ql-y5f rigb at440, jvc ql-y3f vm750, lenco 75, technics sl150
Phono stages: cole lcr, benedict audio hothead
Digital: cyrus cd7, wiim mini x2, topping e30, jds labs el dac 2+
Amplification: nelson pass b1, nelson pass f5
Speakers: 15" fane aperiodic wardrobes
Cans: myryad z40, hifiman sundara + deva, fostex t50rp, sennheiser momentum on ear +over ear, b&w p5 and p7
Phono stages: cole lcr, benedict audio hothead
Digital: cyrus cd7, wiim mini x2, topping e30, jds labs el dac 2+
Amplification: nelson pass b1, nelson pass f5
Speakers: 15" fane aperiodic wardrobes
Cans: myryad z40, hifiman sundara + deva, fostex t50rp, sennheiser momentum on ear +over ear, b&w p5 and p7
- karatestu
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Re: custom built TT finally finished
Vinyl-ant said
"very pleased with this TT build"
I would be as well. You have some serious TT skills
"very pleased with this TT build"
I would be as well. You have some serious TT skills
DIY FREE ZONE
- Latteman
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Re: custom built TT finally finished
Very cool
Good post
Good post
Analogue Source -
Denon DP47f; AT-VM95SH
GL-59; ARB uni pivot; AT- Signet
Ifi Zen Phono
Doug Self balanced Pre amp
Akai 4000DS mk2 R2R
Digital Sources- Argon Pi4 v2; IfI iUSB 3.0, Ifi Neo idsd Dac;
Tidal / Radio Paradise
Amplification Nva 300va mono blocks
Speakers Lii Audio F-15 in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources
Denon DP47f; AT-VM95SH
GL-59; ARB uni pivot; AT- Signet
Ifi Zen Phono
Doug Self balanced Pre amp
Akai 4000DS mk2 R2R
Digital Sources- Argon Pi4 v2; IfI iUSB 3.0, Ifi Neo idsd Dac;
Tidal / Radio Paradise
Amplification Nva 300va mono blocks
Speakers Lii Audio F-15 in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources
- slinger
- Posts: 9276
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Re: custom built TT finally finished
I know bugger-all about these things, which doesn't stop me being very impressed.
Amps - NVA P50, AP30, A40, Stanislav Palo Tube Headphone Amp BB 85
Speakers - Monitor Audio Silver RX2
Cables - NVA LS1+LS3, SSC, Gotham S/PDIF, IBRA Optical
Digital - NAD C516BEE, SONY ST-SDB900 DAB TUNER, TEAC UD-H01 DAC
Analogue - Pro-Ject Debut Carbon Esprit SB, Graham Slee Gram Amp 2 Phono
Cans - Grado SR80, ATH-M50X
Speakers - Monitor Audio Silver RX2
Cables - NVA LS1+LS3, SSC, Gotham S/PDIF, IBRA Optical
Digital - NAD C516BEE, SONY ST-SDB900 DAB TUNER, TEAC UD-H01 DAC
Analogue - Pro-Ject Debut Carbon Esprit SB, Graham Slee Gram Amp 2 Phono
Cans - Grado SR80, ATH-M50X
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Re: custom built TT finally finished
Ta, took some headscratching to get it right this time
Analogue: oracle delphi sme 309, jbe series 3 cx unipivot dv20x2l, roksan xerxes tabriz vm750, jvc ql-y5f rigb at440, jvc ql-y3f vm750, lenco 75, technics sl150
Phono stages: cole lcr, benedict audio hothead
Digital: cyrus cd7, wiim mini x2, topping e30, jds labs el dac 2+
Amplification: nelson pass b1, nelson pass f5
Speakers: 15" fane aperiodic wardrobes
Cans: myryad z40, hifiman sundara + deva, fostex t50rp, sennheiser momentum on ear +over ear, b&w p5 and p7
Phono stages: cole lcr, benedict audio hothead
Digital: cyrus cd7, wiim mini x2, topping e30, jds labs el dac 2+
Amplification: nelson pass b1, nelson pass f5
Speakers: 15" fane aperiodic wardrobes
Cans: myryad z40, hifiman sundara + deva, fostex t50rp, sennheiser momentum on ear +over ear, b&w p5 and p7
- CN211276
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Re: custom built TT finally finished
Same here, along with Doc mod speakers.
Main System
NVA BMU, P90SA/A80s (latest spec), Cube 1s, TIS, TISC(LS7)
Sonore OpticalRendu, Chord Mscaler & Qutest, Sbooster PSs
Network Acoustics Eno, ifi iPurifier3, AQ JB FMJ, Cisco 2940 & 2960
DH Labs ethernet, BNC & USB cables, Lindy cat 6 US ethernet cable
Second System
NVA P20/ A20, Cubettes, LS3, SSP, SC
Sonore MicroRendu, Chord Mojo 2 MCRU PSs, AQ Carbon USB cable & JB FMJ
Headphones
Grado SR325e/Chord Mojo, Beyerdynamic Avetho/AQ DF Colbat
RIP Doc
NVA BMU, P90SA/A80s (latest spec), Cube 1s, TIS, TISC(LS7)
Sonore OpticalRendu, Chord Mscaler & Qutest, Sbooster PSs
Network Acoustics Eno, ifi iPurifier3, AQ JB FMJ, Cisco 2940 & 2960
DH Labs ethernet, BNC & USB cables, Lindy cat 6 US ethernet cable
Second System
NVA P20/ A20, Cubettes, LS3, SSP, SC
Sonore MicroRendu, Chord Mojo 2 MCRU PSs, AQ Carbon USB cable & JB FMJ
Headphones
Grado SR325e/Chord Mojo, Beyerdynamic Avetho/AQ DF Colbat
RIP Doc
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- Latteman
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Re: custom built TT finally finished
+1
Analogue Source -
Denon DP47f; AT-VM95SH
GL-59; ARB uni pivot; AT- Signet
Ifi Zen Phono
Doug Self balanced Pre amp
Akai 4000DS mk2 R2R
Digital Sources- Argon Pi4 v2; IfI iUSB 3.0, Ifi Neo idsd Dac;
Tidal / Radio Paradise
Amplification Nva 300va mono blocks
Speakers Lii Audio F-15 in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources
Denon DP47f; AT-VM95SH
GL-59; ARB uni pivot; AT- Signet
Ifi Zen Phono
Doug Self balanced Pre amp
Akai 4000DS mk2 R2R
Digital Sources- Argon Pi4 v2; IfI iUSB 3.0, Ifi Neo idsd Dac;
Tidal / Radio Paradise
Amplification Nva 300va mono blocks
Speakers Lii Audio F-15 in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources