CHANGSTAR: Audiophile Headphone Reviews and Early 90s Style BBS

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Author Topic: StratoGrado Measurements  (Read 8100 times)

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thefoundMIDrange

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Re: StratoGrado Measurements
« Reply #30 on: November 23, 2012, 12:35:18 AM »
ime, the koss drivers do indeed behave poorly when the volume is anything more than moderate and like others have noted, the bass will not hold together. And also as noted, the bass has very little punch to begin with. For me that is a + since bass slam in my cochlea is one of the biggest turnoffs but seemingly super popular among the 'general population'. Seems like alot of full size and iems have overdone and artificially punchy bass......In any case, I actually like the koss drivers low end and find it's extension and articulation enough for me to hear and enjoy all my favorite bass lines. i agree with the other post that mentioned its texture or tone-nuance not being outstanding though and it is a bit too prominent.
« Last Edit: December 01, 2012, 06:06:38 AM by thelostMIDrange »
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stratocaster

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Re: StratoGrado Measurements
« Reply #31 on: July 24, 2014, 12:41:51 PM »
I have finally set up my own measurement rig (big thanks to Keith aka Bluemonkeyflyer over at HF!) and have been about it for some time now. I am using measurements to make modding easier by getting  'objective' feedback. Doing so I have done some work on the battered set of SR125i drivers with inner wood sleeves and outer SR325 goldies you see below. I will call this set StratoGrado v2 aka Stuffed Turkey, since there is an awful lot of damping used, both channels requiring largely different damping approaches.



Now, these are the measurements:










« Last Edit: July 24, 2014, 02:19:34 PM by stratocaster »
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Moosecraft

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Re: StratoGrado Measurements
« Reply #32 on: July 24, 2014, 01:39:49 PM »
Looks very nice  :)p1 :)p1
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spoony

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Re: StratoGrado Measurements
« Reply #33 on: July 24, 2014, 03:34:44 PM »
Nice! Say, do you enjoy these over the stratokosster? I have a pair of SR80 that I want to modify and have to decide whether to use their drivers or switch to the KSC75 instead.
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stratocaster

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Re: StratoGrado Measurements
« Reply #34 on: July 24, 2014, 08:31:00 PM »
These are open, though damped fairly densely. They definitely do have a fuller bass than the one provided by the KOSS driver.  If you plan to put drivers into closed cups and strive for neutrality the KSC75s are the way to go. But you have to consider that you would need leather L-cushions for the KOSSters.
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spoony

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Re: StratoGrado Measurements
« Reply #35 on: July 24, 2014, 09:16:38 PM »
Oh, I see... Are you willing to share your damping scheme on this pair?, you've done a great job taming the Grado nasties.
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stratocaster

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Re: StratoGrado Measurements
« Reply #36 on: July 24, 2014, 09:44:57 PM »
In this measurement you see the differences between the two Stratos, the purple line representing the left StratoKOSSter driver, the green line being the StratoGRADO left driver. The StratoGRADOs look slicker.



As for the damping scheme, it varies from driver to driver, at least with the two SR125i drivers I have got. Basically I use felt, damping paper aka coffee filter and cotton, in varying layers,  thickness and amount of material needed depends on the driver.
« Last Edit: July 24, 2014, 09:52:22 PM by stratocaster »
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spoony

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Re: StratoGrado Measurements
« Reply #37 on: July 24, 2014, 09:59:42 PM »
Thanks, and that's very nice performance. What happens when you pair your 'leathered' pads with a grado driver?
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stratocaster

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Re: StratoGrado Measurements
« Reply #38 on: July 24, 2014, 10:11:26 PM »
too much midbass ...
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