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Shoji
senior member
Joined: 06 Nov 2002
Posts: 420
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 Posted: Sat Nov 07, 2009 11:11 pm Post subject: |
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Hello. I place below some of the information for production history for this series model.
All this series model is same dimension 315 mm x 88 mm x 315 mm to meet original design team discussion aim for produce turntable to top view dimension same of LP cover.
To market 1979/1980 at same time is model SL-7 model SL-10
To market 1981 is model SL-15
To market 1982/1983 is model SL-3 only this model belt drive
To market 1982/1983 also model SL-5 model SL-6
Model SL-3 have moving magnet cartridge EPC-P24S aluminium cantilever
Model SL-5 have moving magnet cartridge EPC-P24S aluminium cantilever
Model SL-6 have moving magnet cartridge EPC-P23 aluminium cantilever
Model SL-7 have moving magnet cartridge EPC-202 boron cantilever
Model SL-10 have moving coil cartridge EPS-310MC boron cantilever
Model SL-15 have moving magnet cartridge EPC-202 boron cantilever
Is possible some other market have different model cartridge supply
Model SL-3 have weight 3.2 kg
Model SL-5 have weight 4.4 kg
Model SL-6 have weight 4.7 kg
Model SL-7 have weight 7 kg
Model SL-10 have weight 6.5 kg
Model SL-15 have weight 6.6 kg
Model SL-3 and the model SL-7 use TRNC cabinet |
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flavio81
contributor
Joined: 16 Sep 2009
Posts: 2275
Location: Lima
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| Posted: Sat Nov 07, 2009 11:33 pm Post subject: |
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| Shoji wrote: |
Model SL-3 have weight 3.2 kg
Model SL-5 have weight 4.4 kg
Model SL-6 have weight 4.7 kg
Model SL-7 have weight 7 kg
Model SL-10 have weight 6.5 kg
Model SL-15 have weight 6.6 kg
Model SL-3 and the model SL-7 use TRNC cabinet |
So i have the heaviest one? Great!!
As far as i can recall not only the SL-7 used TRNC but the other big ones too... or only the SL-7? |
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Shoji
senior member
Joined: 06 Nov 2002
Posts: 420
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| Posted: Sun Nov 08, 2009 8:36 am Post subject: |
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| Hello. Model SL-3 plus SL-7 use TRNC in construction of chassis. Model SL-7 outer cabinet bottom part zinc cast plus also top part aluminum cast. Model SL-10 plus SL-15 aluminum cast both parts. |
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LPfan
vinyl addict
Joined: 28 Oct 2007
Posts: 581
Location: Mumbai, India
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| Posted: Sun Nov 08, 2009 1:39 pm Post subject: |
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Hallo Shoji,
Is the SL-7 motor same as 1200 ? Can you inform us some technical details, such as no. of poles and torque about this motor? Is it advisable and possible to lube this motor?
With Best Regards,
LPfan
_________________
Music is a universal language. |
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Shoji
senior member
Joined: 06 Nov 2002
Posts: 420
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| Posted: Sun Nov 08, 2009 2:00 pm Post subject: |
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Hello LPfan. Is long time since we speak before. I think information from before for Akai motor never received to your email ?
With model SL-7 motor design is like design idea as SL-1200 with FG circuit but have different stator frame plus in addition Hall element for position control. Is possible to place small few drop of oil for spindle shaft for lubrication may be every 2000 hour use. |
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LPfan
vinyl addict
Joined: 28 Oct 2007
Posts: 581
Location: Mumbai, India
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| Posted: Sun Nov 08, 2009 4:58 pm Post subject: |
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Hallo Shoji,
Thanks for the info about SL-7. The Akai motor info did not reach me. I shall pm my email ID to you, please try to send it across again.
I picked up a SL-7 a few months ago, it is w/o the mains transformer, as somebody burnt it by plugging 120 volts only model into 240 volts. I tried running it on DC 12 volts, the lights come on the motor starts and stops. So hopefully, with proper servicing this shall work. Yesterday my supplier in the flea market received another SL-7, along with Sansui PM-7 Compusensor, I have confirmed the deal on both turntables for 25 US$, I shall pick up next week and try to make one properly working SL-7.
If you know anything about the Sansui PM-7, please let me know.
With Best Regards,
LPfan
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Music is a universal language. |
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fscl
contributor
Joined: 05 Aug 2004
Posts: 1966
Location: CT, US
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| Posted: Mon Nov 09, 2009 2:53 am Post subject: |
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I inadvertently wrote:
| Quote: | | Technics linears fall into 2 families, 11KG |
I should stick with LBS  and put the SL-QL1 on the scale. She's lighter than I estimated and weights in at 17LBS. She sounds phat though..... 
The SL-QL15 tips the scale at 12LBS with the same footprint. The cover is all plastic and not metal (containing tonearm assembly) and plastic of the QL1.
I have not compared the base material however, the QL1's base feels a bit more substantial than the QL15.
So, what I was trying to say before, my observation was the extra 5-6LBS, 2-3KG weight constituted the "heavyweight" linears and is due to different materials of construction, in the cover and the base.
The MSRP seem to reflect this "heavyweight / lightweight" difference too in the vintage Technics sticky.
Fred
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Music is Everything....Except Predictable....WFUV Fan. |
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Shoji
senior member
Joined: 06 Nov 2002
Posts: 420
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| Posted: Mon Nov 09, 2009 8:00 pm Post subject: |
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Hello LPfan. Make the check of model SL-7 transformer winding if is possible to have local re wind. Transformer in this model is OK for work on. Ensure other component in circuit check OK in the addition. I only have friend who know better for Sansui PM-7. With this model is some time problem with small belt in intermediate drive. Have much fun with fleas  |
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