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Mar 10, 2011 at 11:13 PM Post #2,102 of 5,004


Quote:
redrum42 said:
Just want to point out that this is not true. There is no risk at all in using a DMM to measure the impedance of a driver (or any other delicate component for that matter). A DMM is pretty close to an ideal "infinite resistance" and so the current that flows (whether DC or AC) is negligable. Also, there is nothing wrong with subjecting a driver to DC resistance in general. It just wont do much apart from an initial transient spike.
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2nd..... The DVOM is the best tool when diagnosing automotive ECM's, PCM's and such. These devices are way more delicate than a coil of wire in a headphone speaker. The minimal voltage will not short the wire or cause it to come loose from the mylar. I do recommend a good DVOM though.....
 
 
Mar 10, 2011 at 11:35 PM Post #2,103 of 5,004
Sharkz--very, very, very Nice work!!!! Sharp, clean, they look comfy and your saved by our fearless leader!!!  Seriously...they are really awesome- Sweet!!!!!
 
Mar 11, 2011 at 12:09 AM Post #2,105 of 5,004
Alright guys, a new option in pads has opened up for me (and possibly everybody else if it all works out) with the completion of my DIY'd hot wire foam cutter (~$20 :D). I'm going to start my attempts at a DIY pair of bowls here soon (and hopefully get some Grado bowls to compare). If it works and I get some experience with the thing, it may end up being the simple fix to avoid the $50 jumbos.
 
Mar 11, 2011 at 3:43 AM Post #2,106 of 5,004
simple fix, avoid $50 jumbos = priceless --sml1226 let us know if we can do anything to help out.
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Mar 11, 2011 at 4:01 AM Post #2,107 of 5,004
Would be nice to get bowls that cover the entire ear instead of painfully resting on the ear..

And thanks bob I couldn't find silver cables so I settled with canare 4E5C. Read somewhere their good headphone cables. I've also got some 4s6 that I could make single ended but probably not balanced since the cable is too thick for the plug
 
Mar 11, 2011 at 5:27 AM Post #2,108 of 5,004

Morning Bill. Would it be too much to ask your opinions on these woods and what they will bring to the table?
Quote:
bilavideo said:
The mail has come and I'm very excited.  Thanks to the world of the internet - which lets us reach out and touch the far side of the planet - I've got wood piling up at my door.   So far, this is what I've got:
 
East Indian Rosewood
African Padauk
Honduras Mahogany
Hawaiian Koa
Mexican Cocobolo
Redheart
Brazilian Cherry
 
This is what's coming:
 
Balsamo/Santos Mahogany
Canarywood
Berlinia
Longhi Rouge
Jatoba
Granadillo
Wamara/Guyana Rosewood
White Limba a/k/a Korina
Yellowheart
 
My wife may kill me, but at least I'll die with a smile on my face.  In the meantime, I'm very pleased that the dremel has resolved the issue with the slip-on grooves.  I had to stop what I was doing until I'd fixed that issue.  Now, I'm ready to move forward.  It rained last night and today but the skies are clear again - and I'm ready to sail!
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Mar 11, 2011 at 11:45 AM Post #2,111 of 5,004
I was under the impression all the wood Grado's used some form of Mahogany due to the fact it is readily avalible and easy to work with. That is what I would assume the HF driver housings are.
 
Mar 11, 2011 at 5:03 PM Post #2,113 of 5,004
eclein said:
simple fix, avoid $50 jumbos = priceless --sml1226 let us know if we can do anything to help out.
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Only idea as of now for help is different types of foam. Right now I have some really dense stuff, seems quite a bit stiffer than a lot of things. It may work for a jumbo since it would sit more around the ear than on it though. We'll see, I've actually got some work ahead of me trying to get the wire to stay straight, it's at a slight angle right now and everything is coming out slightly off vertical.
 
Mar 11, 2011 at 5:20 PM Post #2,114 of 5,004
sml1226--make crazy shaped ones, get the essential areas right and then get creative, angles, dents, curvy indentations.....could be my meds kicking in but standard foam pads are just foam pads....can you color them somehow??
 
Mar 11, 2011 at 6:00 PM Post #2,115 of 5,004
 
kneeljung said:
Does anyone know what kind of wood Grado uses for the driver housing in the HF2?
 
 
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It's mahogany.  That's the only wood Grado has ever used.  They outsource the wooden shells to some other outfit.  Regardless of what you see on the outer/secondary/rear shells, the inner shells are identical on the HF1, RS1, RS2, HF2, GS1000 and PS1000.  It's all a simple, mahogany inner.
 
 
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