systemdek transcription

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keengo
Scotland
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Joined: 24 Apr 2019 22:46

systemdek transcription

Post by keengo » 24 Apr 2019 22:58

hi all and its nice to be here as just joined,seems a lot of knowledge here!
anyway my topic is a systemdek transcription table in which ive just purchased. first question ive put platter on it seems to be leaning more to left and touching the plinth,how do I adjust this? do I use the four screws in the plinth or do I adjust using the 3 springs? also it comes in a Nextel ceramic kind of coating,did systemdek do these or did these in different finishes as I believe theres a suede or velvet finish but mine seems more ceramic,any help would be greatly appreciated

cre009
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England
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Re: systemdek transcription

Post by cre009 » 25 Apr 2019 08:43

I will be interested in any replies.

On mine the platter and arm board move to the right and I have to be very careful in adjusting the springs to avoid the armboard knocking on the top plate. The adjustment is made by the suspension screws in the top plate but after adjusting the position of the sub chassis the whole thing moves/sways to the right as soon as the platter is replaced.

I suspect the issue is caused by the very compliant springs which make the suspension very bouncy but result in the progressive swaying/toppling of the sub chassis over time. My expectation is I will need to dismantle the deck and swap the existing springs around to get the whole thing more central. Replacing the springs with for example those used for LP12s would stiffen the deck suspension but would depart from the original design.

See here for reviews of the deck. I believe there were different finishes. Mine is the common grey. The Systemdek III is an "upgraded" version of the original transcription.

viewforum.php?f=67

Alec124c41
vinyl engineer
vinyl engineer
Canada
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Re: systemdek transcription

Post by Alec124c41 » 25 Apr 2019 14:25

You can find the owner's manual here: https://www.vinylengine.com/library/sys ... tion.shtml
You need to adjust the spring suspension properly. Watch the orientation of the springs. IIRC the bottom end of each spring should be toward the spindle, to get a vertical bounce.

Cheers,
Alec

cre009
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Re: systemdek transcription

Post by cre009 » 26 Apr 2019 14:09

Alec - these decks use cross head bolts to allow the suspension to be levelled from above. These bolts screw through the top plate and terminate by screwing into the metal bottom plate. The springs are probably factory set. The only way to get access to the spring orientation as far as I can tell is to dismantle the suspension by unscrewing the bolts in order to remove the bottom plate and then re-assembling in the hope that any revision will resolve the problem once the deck is reassembled.

I got my deck out today to check. I think there are at least 3 possibilities that could cause the issue.

1. The bolts have bent.
2. The bolts are not locating correctly through the top plate, sub chassis and into the bottom plate
3. The action of the springs is causing the tilt.

The platter is very heavy which will lead to pressure and stress over time so all 3 are possibilities.

On mine I think it is action of the springs that is the issue rather than the bolts. With careful adjustment to level the platter I can get about 1.5mm clearance between the arm board and the top plate on the right side of the arm board but this leaves several mm clearance on the left. The deck is very bouncy and the bounce is reasonably vertical.

Alec124c41
vinyl engineer
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Re: systemdek transcription

Post by Alec124c41 » 26 Apr 2019 21:32

Direct experience of a specific item is always the most helpful, and cre009 has it.

Cheers,

cre009
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Re: systemdek transcription

Post by cre009 » 27 Apr 2019 13:27

Alec - my experience is still limited because I have not got as far as dismantling this deck. Not sure if the access to the suspension springs for servicing should be via the top or the bottom.

I have had a frustrating morning working on the deck. For the OPs benefit some other factors that may come into play are arm weight, the arm cable dressing and belt tension. I have been spending some time on the arm cable by applying various tweaks and adjustments to try to pull the arm board away from the plinth on the right a little but usually end up snagging at the rear. The tweaks so far have also interfered with the bounce. However the OP should check the arm on his is floating relatively free of tension from the cable.

The manual says there should be 4 to 5 mm clearance between platter bottom and plinth for correct belt tension.

totem
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Re: systemdek transcription

Post by totem » 27 Apr 2019 18:01

Have the springs become fatigued and no longer retain Oem specifications.

MikeyB456
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Re: systemdek transcription

Post by MikeyB456 » 07 Feb 2020 08:03

Just found this thread. I have a Systemdek 3 with the same issue, the armboard fouls on the plinth because the suspension moves to the right and forward. I am controlling it by adjusting the arm wire dressing, but would love to fix it properly.

Did you ever solve the issue, cre009?

cre009
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Re: systemdek transcription

Post by cre009 » 07 Feb 2020 09:34

Not fully to my satisfaction. I used the arm cable to pull the arm away from the plinth by applying some light tension. The arm board on mine was not actually touching the plinth at rest but it was close enough that it could foul on the plinth on occasion when cueing.

There is still plenty of bounce from the suspension following the adjustment but not as much as if there is no tension. I did not notice any degradation in sound quality but am still not convinced I am hearing the deck at its best given its reputation from the early 80s.

MikeyB456
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Re: systemdek transcription

Post by MikeyB456 » 07 Feb 2020 09:58

I'm awaiting the arrival of a new armboard for mine to properly fit my arm, so I'm reserving judgment on sound quality until then. But early impressions of the current bodged-up arrangements are very good, so I'm hopeful.

As a young man at Uni I had a Saturday/holiday job in a HiFi dealer and used to sell these. SQ wise, we used to prefer them to the Aristons, STDs, Fons,etc. We weren't Linn dealers, so had no opportunity for direct comparison with the LP12. Not sure I precisely remember the sound after all these years, though!

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