TT dimension help

3GGG · 11th March 2010, 08:37 PM

Hi All

I am building a high mass TT. Marble base, 75mm acrylic platter, maxon motor and RB300 arm

If someone could tell me the followind dimensions (in mm preferably!) that would help alot.

Sorry if i am not clear explaining what i am after.

I need a template for the mounting holes for the tone arm.

Also the centre to centre distance from the TT to the tone arm.

Also the turntables platter will be 80mm from the top of the plinth (75mm platter + 5mm clearance), how high should i build up the part where the tone arm sits? (should it be 10mm below the finished platter height?)

thank you in advance

Gregg

Xoc1 · 11th March 2010, 10:03 PM

The cutout dimension that was supplied with my Rega RB300 is a 23mm diameter hole, with a 222mm centre to centre dimension to the spindle.

On My Townsend Rock the arm base is about 28mm below the platter but of course this dimension will vary with cartridge ht & preferred VTA.
Suposedly the dimension between the platter and the armboard on an Rega 3
would be ideal - This dimension is certainly bigger than 10mm.

3GGG · 11th March 2010, 10:27 PM

Great, thanks Xoc1.

The arm base will be able to be adjusted further down the build.
23mm hole and 222 ctc it is.

11th March 2010, 08:37 PM	#1
3GGG diyAudio Member Join Date: Mar 2010	TT dimension help Hi All I am building a high mass TT. Marble base, 75mm acrylic platter, maxon motor and RB300 arm If someone could tell me the followind dimensions (in mm preferably!) that would help alot. Sorry if i am not clear explaining what i am after. I need a template for the mounting holes for the tone arm. Also the centre to centre distance from the TT to the tone arm. Also the turntables platter will be 80mm from the top of the plinth (75mm platter + 5mm clearance), how high should i build up the part where the tone arm sits? (should it be 10mm below the finished platter height?) thank you in advance Gregg

11th March 2010, 10:03 PM	#2
Xoc1 diyAudio Member Join Date: Nov 2008 Location: Devon UK	Cutout Dimension The cutout dimension that was supplied with my Rega RB300 is a 23mm diameter hole, with a 222mm centre to centre dimension to the spindle. On My Townsend Rock the arm base is about 28mm below the platter but of course this dimension will vary with cartridge ht & preferred VTA. Suposedly the dimension between the platter and the armboard on an Rega 3 would be ideal - This dimension is certainly bigger than 10mm.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Need suggestions for my next TT - totally lost in the sea of TT models	Razorblade	Analogue Source	10	22nd April 2009 12:28 AM
distortion on U-dimension ProX 420.4	xtorm	Car Audio	0	20th November 2007 03:56 PM
Problems with µDimension 420.4	yellow5	Car Audio	3	27th August 2007 01:15 PM
ar.com dimension question	Bobhof	Multi-Way	6	23rd April 2006 06:23 PM
Which TT do I use as a donor for DIY TT?	G	Analogue Source	1	13th September 2004 04:43 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

11th March 2010, 10:27 PM	#3
3GGG diyAudio Member Join Date: Mar 2010	Great, thanks Xoc1. The arm base will be able to be adjusted further down the build. 23mm hole and 222 ctc it is.