[nikongod]

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 /img/forum/go_quote.gif 23.82mm digital calipers. (So I guess this a confirmation of 24mm)

SR-60i
Quote:

Originally Posted by Sophonax /img/forum/go_quote.gif SR60i - 33.5 mm

SR-80
Quote:

Originally Posted by Emooze /img/forum/go_quote.gif 24mm

SR-80i
Quote:

Originally Posted by Leonchan /img/forum/go_quote.gif 34mm

SR-100

SR-125
Quote:

Originally Posted by Listens2tubes /img/forum/go_quote.gif Using a caliper - 23.5mm

SR-125i
Quote:

Originally Posted by stonyboys /img/forum/go_quote.gif 24mm

SR-200
Quote:

Originally Posted by pcf /img/forum/go_quote.gif 23mm

Quote:

Originally Posted by FallenAngel /img/forum/go_quote.gif SR200 - confirming 23mm

SR-225
Quote:

Originally Posted by loopsider /img/forum/go_quote.gif 24mm

SR-225i
Quote:

Originally Posted by Turb0Jugend /img/forum/go_quote.gif 34mm

Quote:

Originally Posted by cegras /img/forum/go_quote.gif SR-225i: 33.5 - 34 mm, +/- 0.5 mm (as per standard error).

SR-300
Quote:

Originally Posted by autosound /img/forum/go_quote.gif SR300 - 24mm

SR-325 (black) 35mm

SR-325 (silver)
Quote:

Originally Posted by stonyboys /img/forum/go_quote.gif 34.5mm

SR-325i
Quote:

Originally Posted by Tech2 /img/forum/go_quote.gif 34.09mm with digital caliper

.
Quote:

Originally Posted by Drosera /img/forum/go_quote.gif 34.15 mm (with caliper)

HF-1
Quote:

Originally Posted by Listens2tubes /img/forum/go_quote.gif Using a caliper - 25.5mm

HF-2 33mm
Quote:

Originally Posted by jjinh /img/forum/go_quote.gif 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 /img/forum/go_quote.gif Vintage B (pink-driver) RS-1 - 39mm

Quote:

Originally Posted by keyid /img/forum/go_quote.gif Vintage B. RS1 = 39.5mm / 1.56" using caliper

Quote:

Originally Posted by tamahome77 /img/forum/go_quote.gif using caliper - Late friday's RS-1 - 40.08mm

RS-1i
Quote:

Originally Posted by SemiAudiophile /img/forum/go_quote.gif 39mm

RS-2
Quote:

Originally Posted by dasmb /img/forum/go_quote.gif 34mm

RS-2i

GS-1000

GS-1000i
Quote:

Originally Posted by Revogamer /img/forum/go_quote.gif 50-51mm (my ruler sucks)

PS-1
Quote:

Originally Posted by bozebuttons /img/forum/go_quote.gif 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 /img/forum/go_quote.gif 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 /img/forum/go_quote.gif 24mm

Quote:

Originally Posted by diredesire /img/forum/go_quote.gif 23.82mm digital calipers. (So I guess this a confirmation of 24mm)

MS-1i
Quote:

Originally Posted by jjinh /img/forum/go_quote.gif 32mm

Quote:

Originally Posted by GeckoSlayer /img/forum/go_quote.gif confirm MS-1i 32mm

MS-2

MS-2i
Quote:

Originally Posted by ljokerl /img/forum/go_quote.gif 34 +/- 0.5mm

MS-pro
Quote:

Originally Posted by JayT201 /img/forum/go_quote.gif 39mm

 

[zotjen]

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/

 

[Turb0Jugend]

SR-225i: 34mm

 

[nikongod]

Quote:

Originally Posted by zotjen /img/forum/go_quote.gif 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.

 

[zotjen]

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?

 

[cegras]

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.

 

[dasmb]

RS2 (built in 2008): 34mm

 

[Leonchan]

SR80i - 34mm

 

[SemiAudiophile]

RS1i: 39mm

 

[Emooze]

SR-80 (no i) 24mm

 

[nikongod]

Thanks to everyone who has posted so far. The list should fill up nicely at this rate.
Quote:

Originally Posted by zotjen /img/forum/go_quote.gif 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.

 

[jjinh]

ms-1i 32mm

Quote:

Originally Posted by nikongod /img/forum/go_quote.gif HF-2 33mm

same as what i got

 

[cegras]

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.

 

[Revogamer]

GS1000i 50-51mm (my ruler sucks)

 

[Listens2tubes]

Using a caliper

HF-1 - 25.5mm

SR-125 - 23.5mm