Trade: Ammonite Acoustics
Location: Norwich
Posts: 2,814
I'm Hugo.
Jelco heavy counterweight
Marco uses the heavy counterweight on his SA-750D and I have found that, to balance my heavier MC cartridges, the standard weight has to be wound back almost to the end of the stub. So, I find myself interested in the heavy weight too, but does it really cost £75? That seems an awful lot of money for a lump of metal. That's more than a Tecnoweight, FFS!
Senior Member
Location: Valley of the Hazels
Posts: 9,139
I'm AMusicFanNotAnAudiophile.
It does seem expensive for a lump of metal, even though it has been machined.
You could try a washer or two attached to the rear of the counterweight, that way the ugly add-ons would be better hidden from view.
I did this once on a Linn Basik Plus LVX to great effect.
Chris
Common sense isn't anymore!
Site Owner/Administrator
Location: Wrexham, North Wales, UK
Posts: 110,012
I'm AudioAl'sArbiterForPISHANTO.
Shuggs,
Don't forget the AOS discount (and the fact that you're a good customer), so speak to Dave
Marco.
Main System
Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & reg mods]. Funk Firm APM Achromat/Nagaoka GL-601 Crystal Record Weight/Isonoe feet & boots/Ortofon RS-212D/Denon DL-103GL in Denon PCL-300 headshell with Funk Firm Houdini/Kondo SL-115 pure-silver cartridge leads.
Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp/Denon AU-310 SUT.
Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.
CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.
Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new, by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.
Preamps: Heavily-modified Croft Charisma-X. LDR Stereo Coffee. Power Amps: Tube Distinctions Copper Amp fitted with Tungsol KT-150s. Quad 306.
Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.
Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.
Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.
Protect your HUMAN RIGHTS and REFUSE ANY *MANDATORY* VACCINE FOR COVID-19!
Also **SAY NO** to unjust 'vaccine passports' or certificates, which are totally incompatible with a FREE society!!!
Trade: Pure Sound
Location: South West England
Posts: 958
I'm Guy.
I just acquired a 750L from Dave which he kindly supplied with both sizes of c/weight ie 100 and 150g. Having said that, because of the extra length of the arm, even the heavier weight is at the limit for my cartridge (22g) and for the SPU I intend to use (33g), I expect it may not be enough. However I found an OL rega weight (100g) which seems to fit nicely on the stub & this in conjunction with the smaller Jelco weight may give the right amount of balance. We'll see.
Site Owner/Administrator
Location: Wrexham, North Wales, UK
Posts: 110,012
I'm AudioAl'sArbiterForPISHANTO.
Hi Guy/Shuggs,
I use the heavy Jelco counterweight (reversed) to balance out the M3D, which combined with the AT LT-12 headshell and brass spacer (to add extra mass) weighs 30g, and the c/w resides halfway along the stub of the SA-750, so no problems there. The heavyweight Jelco c/w really is a beast!
Marco.
Main System
Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & reg mods]. Funk Firm APM Achromat/Nagaoka GL-601 Crystal Record Weight/Isonoe feet & boots/Ortofon RS-212D/Denon DL-103GL in Denon PCL-300 headshell with Funk Firm Houdini/Kondo SL-115 pure-silver cartridge leads.
Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp/Denon AU-310 SUT.
Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.
CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.
Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new, by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.
Preamps: Heavily-modified Croft Charisma-X. LDR Stereo Coffee. Power Amps: Tube Distinctions Copper Amp fitted with Tungsol KT-150s. Quad 306.
Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.
Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.
Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.
Protect your HUMAN RIGHTS and REFUSE ANY *MANDATORY* VACCINE FOR COVID-19!
Also **SAY NO** to unjust 'vaccine passports' or certificates, which are totally incompatible with a FREE society!!!
Trade: Pure Sound
Location: South West England
Posts: 958
I'm Guy.
The trouble is that the heavy weight is intended for the 9" arm. Hang all that mass 12" out and then see how much heavier still the counterweight needs to be
Last edited by pure sound; 01-04-2010 at 14:51.
I use a 750 heavy weight on my 250 arm for the AT33PTG. This means the counterweight is very close to the limit of travel forwards and keeps the effective mass down.
Trade: Ammonite Acoustics
Location: Norwich
Posts: 2,814
I'm Hugo.
Will you sell your heavy weight to me when you get your new arm?Originally Posted by MartinT
I don't think Hamish will be needing it (he will be using an AT OC9) so I'll reserve it for you
Trade: Ammonite Acoustics
Location: Norwich
Posts: 2,814
I'm Hugo.
Ooh! Thanks!I don't think Hamish will be needing it (he will be using an AT OC9) so I'll reserve it for you
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