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Please help: Measure your Grados!

post #1 of 43
Thread Starter 
Hello Head-fi

Im working on a DIY project and would appreciate it if you could help me with some quick measurements.

I would like to put together a table of the HEIGHT of various Grado and Alessandro headphones.

It is important that all headphones are stock! If they have been disassembled (re-cabled or otherwise modified) at any time please note that. To make things easy on everyone, please use the metric system (milimeters) to measure. It is OK to round to the nearest mm if you have tools that measure better, but accuracy to 1mm should be obtainable by anyone and I think good enough for this kind of informal survey.

Please measure from the 2 outermost points shown:


It is often helpful to measure from a few cm in on the ruler, and subtract. the ends of rulers get all chewed up...

If you can confirm someone elses measurement, please just quote them and type "confirmed"

I will quote you for credit & edit your response info into this post so that its easier to find as time passes. I filled in all of the grados models I could think of, with all well known variations so that if there is a change from model to model it may be noted.

Thank you all in advance for your help.

Grado:

SR-60 23mm

Quote:
Originally Posted by diredesire View Post
23.82mm digital calipers. (So I guess this a confirmation of 24mm)
SR-60i
Quote:
Originally Posted by Sophonax View Post
SR60i - 33.5 mm
SR-80
Quote:
Originally Posted by Emooze View Post
24mm
SR-80i
Quote:
Originally Posted by Leonchan View Post
34mm
SR-100

SR-125
Quote:
Originally Posted by Listens2tubes View Post
Using a caliper - 23.5mm
SR-125i
Quote:
Originally Posted by stonyboys View Post
24mm

SR-200
Quote:
Originally Posted by pcf View Post
23mm
Quote:
Originally Posted by FallenAngel View Post
SR200 - confirming 23mm
SR-225
Quote:
Originally Posted by loopsider View Post
24mm
SR-225i
Quote:
Originally Posted by Turb0Jugend View Post
34mm
Quote:
Originally Posted by cegras View Post
SR-225i: 33.5 - 34 mm, +/- 0.5 mm (as per standard error).
SR-300
Quote:
Originally Posted by autosound View Post
SR300 - 24mm
SR-325 (black) 35mm

SR-325 (silver)
Quote:
Originally Posted by stonyboys View Post
34.5mm
SR-325i
Quote:
Originally Posted by Tech2 View Post
34.09mm with digital caliper
.
Quote:
Originally Posted by Drosera View Post
34.15 mm (with caliper)
HF-1
Quote:
Originally Posted by Listens2tubes View Post
Using a caliper - 25.5mm
HF-2 33mm
Quote:
Originally Posted by jjinh View Post
same as what i got
RS-1 (very very old, oldest vintage) 40mm

RS-1 from somewhere in the middle there
Quote:
Originally Posted by uberburger101 View Post
Vintage B (pink-driver) RS-1 - 39mm
Quote:
Originally Posted by keyid View Post
Vintage B. RS1 = 39.5mm / 1.56" using caliper
Quote:
Originally Posted by tamahome77 View Post
using caliper - Late friday's RS-1 - 40.08mm
RS-1i
Quote:
Originally Posted by SemiAudiophile View Post
39mm
RS-2
Quote:
Originally Posted by dasmb View Post
34mm
RS-2i

GS-1000

GS-1000i
Quote:
Originally Posted by Revogamer View Post
50-51mm (my ruler sucks)
PS-1
Quote:
Originally Posted by bozebuttons View Post
39.83mm using a digital caliper.
PS-1000
Quote:
Originally Posted by wnmnkh
42.34mm, avg from both sides, used a digital caliper.
HP-1 (with switches)
Quote:
Originally Posted by pcf View Post
34mm

HP-2 (without switches) 34mm

HP-3 (at least confirm if its the same as the HP-2)

Alessandro:

MS-1
Quote:
Originally Posted by GeckoSlayer View Post
24mm
Quote:
Originally Posted by diredesire View Post
23.82mm digital calipers. (So I guess this a confirmation of 24mm)
MS-1i
Quote:
Originally Posted by jjinh View Post
32mm
Quote:
Originally Posted by GeckoSlayer View Post
confirm MS-1i 32mm
MS-2

MS-2i
Quote:
Originally Posted by ljokerl View Post
34 +/- 0.5mm
MS-pro
Quote:
Originally Posted by JayT201 View Post
39mm
post #2 of 43
Quote:
RS-1 from somewhere in the middle there
Exactly which variation is this? I think you're missing a few variations of the RS-1. See here:

http://www.head-fi.org/forums/f4/cla...ogress-420092/
post #3 of 43
SR-225i: 34mm
post #4 of 43
Thread Starter 
Quote:
Originally Posted by zotjen View Post
Exactly which variation is this? I think you're missing a few variations of the RS-1. See here:

http://www.head-fi.org/forums/f4/cla...ogress-420092/
Its hard to keep track of them all. Im hoping a few people will chime in on the RS-1 because it is particularly interesting to me with so many differences from generation to generation.

If there are dimensional differences, I will add to the options there.
post #5 of 43
Just another thought. Since all Grados are put together by hand, most likely there will be slight differences even among the same model, or is that what you are trying to find out?
post #6 of 43
SR-225i: 33.5 - 34 mm, +/- 0.5 mm (as per standard error).

The 225i has an extra 'front' section glued in, at least from the pictures I've seen.
post #7 of 43
RS2 (built in 2008): 34mm
post #8 of 43
SR80i - 34mm
post #9 of 43
RS1i: 39mm
post #10 of 43
SR-80 (no i) 24mm
post #11 of 43
Thread Starter 
Thanks to everyone who has posted so far. The list should fill up nicely at this rate.
Quote:
Originally Posted by zotjen View Post
Just another thought. Since all Grados are put together by hand, most likely there will be slight differences even among the same model, or is that what you are trying to find out?
Im curious if there is any correlation between the length of the headphone and the generally agreed on sound differences & measured differences model to model.

I suspect there may be some variations from sample to sample, but I think this will get close enough for my highly unscientific methods.

My end goal is to pick a "new" length and have someone make me a set of Grado cups to experiment with the whole length VS the "overall sound" of the headphone. I dont think a database like this has been put together so maybe someone else can use it too. I recall there was the head-fier in Europe who made a set of beautiful aluminum cups for his headphones, perhaps a list like this will help the next guy.
post #12 of 43
ms-1i 32mm

Quote:
Originally Posted by nikongod View Post
HF-2 33mm
same as what i got
post #13 of 43
From pictures I saw either the 225 or the 325 had an extra spacer glued in, so I must have been wrong, since the 225 and 80 share the same length.
post #14 of 43
GS1000i 50-51mm (my ruler sucks)
post #15 of 43
Using a caliper

HF-1 - 25.5mm

SR-125 - 23.5mm
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