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Gear / Technical Help => Recording Gear => Topic started by: Arni99 on July 18, 2007, 10:21:16 AM
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my refurbished iHP-100 (with 10GB harddisk) doesn´t provide plugin-power when set to line-in with the latest rockbox-build for the H100-series from July 17th 2007.
purchased it for 72 € + shipping from roadpal (ebay-shop).
http://cgi.ebay.at/ws/eBayISAPI.dll?ViewItem&item=300126600164
is the plugin-power controlled by rockbox or is the unit faulty or does the iHP-100 simply not have the plugin-power feature on it´s line-in?
the iHP-100 looks like the H120 with silver color...same dimensions and in/output connections (optical).
(http://img68.imageshack.us/img68/7457/cimg0997jb4.jpg) (http://imageshack.us)
when using my 12V bbox all is fine though.
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I didn't think they had plugin power did they??
I could be wrong, then again I always use a BB so never tried without...
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I also purchased the same unit from this seller and am having the same issue. Works fine with a preamp or battery box.
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I didn't think they had plugin power did they??
I could be wrong, then again I always use a BB so never tried without...
I assumed they did based on the iriver Taper's FAQ where it states they supply 2.5v. However, I think you may be right since I see no rockbox setting to change the line-in to a mic-in. If there is no way to change, how would the recorder know if you were using line or mic?
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I didn't think they had plugin power did they??
I could be wrong, then again I always use a BB so never tried without...
I assumed they did based on the iriver Taper's FAQ where it states they supply 2.5v. However, I think you may be right since I see no rockbox setting to change the line-in to a mic-in. If there is no way to change, how would the recorder know if you were using line or mic?
rockbox source: "line-in" = usually plugin-power for external mics.
with my H120 and H140 plugin-power was provided.
nevertheless I always use a bbox for powering my mics with 12V, so its not a big issue. ;)
perhaps all iHP-100 models DON´T support plugin-power.
roadpal just mailed me:
"hi,
you need to talk our engineer named "peter"
510-445-0188
thanks for your reply. "
could someone from U.S. call peter? I can´t call abroads with my company-cellphone.......
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I agree it is not big deal, but I would still like to know if this is an issue with rockbox, a defective recorder, or a feature that the iHP-100 just doesn't have. I did not test plug-in power prior to installing rockbox.
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Rockbox has nothing to do with it, the plug power is always there (even if you select line-in in the original firmware! even if you never record anything with it!)
What I do not know is whether the iHP100 also has it...
(I just asked in our IRC channel)
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I drive past Roadpal's place twice a day. What do you want me to ask? Whether the line-out puts off a 2.5V signal?
Wow. On phone with PEter now. Big time language barrier. It actually sounds as if Peter is the translator for someone in the background. BRB.
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I drive past Roadpal's place twice a day. What do you want me to ask? Whether the line-out puts off a 2.5V signal?
ask wether the iHP-100 line-IN(not line-out) provides plugin-power as the H120 and H140 does for powering mics with 2,5V.
thx
Arni ;)
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He said that it does. I asked him what voltage it put out and he said he was not sure. ::) I would just suggest hacking a cable and grabbing your volt meter. My guess is that if it is only 2.5V then it is not enough to drive your mics.
Edit to add: sorry that was not much help. I tried.
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He said that it does. I asked him what voltage it put out and he said he was not sure. ::) I would just suggest hacking a cable and grabbing your volt meter. My guess is that if it is only 2.5V then it is not enough to drive your mics.
Edit to add: sorry that was not much help. I tried.
it´s enough power to drive my mics BUT they sound better with 12V of course ;).
the unit simply doesn´t have plugin power...my guess. even the provided iriver-mic is dead when connected.....
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Mine also came with an extermal mic..doesn't work. I've read the iHP-100 Iriver manual and it does not mention Mic-In or mic power. I think these units don't have mic power.
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I have asked a fellow dev who has an iHP100 to measure on his unit, I hope to have results on this tomorrow...
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I have asked a fellow dev who has an iHP100 to measure on his unit, I hope to have results on this tomorrow...
Ok, so here's the bad news: it seems the iHP100 does not provide plug power.
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I have asked a fellow dev who has an iHP100 to measure on his unit, I hope to have results on this tomorrow...
Ok, so here's the bad news: it seems the iHP100 does not provide plug power.
thx petur ;),
no problem, thats good new and not bad news ;)!
now we know the sold roadpal-units are in good condition and not faulty.
use your 9 or 12V bboxes to power your electret condenser mics properly ;).
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although the ihp-h100 does NOT provide plugin-power on line-in like the H120/140/320/340, power consumption is about 50-60% higher than with my former H140...both rockboxed.
the ihp100 can record about 4h15 with the SAME battery my H140 used to record between 8 and 10 hours?!?!
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maybe simply a bad battery?? those models are old and maybe the battery has lost most of its power, even if the unit has not been used at all...
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maybe simply a bad battery?? those models are old and maybe the battery has lost most of its power, even if the unit has not been used at all...
i wrote it´s the same battery ;)...disassembled my h140 and put it´s battery into the ihp-100.
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the ihp100 has poor battery because it has half the ram buffer of the H120. Thus the HDD spins more often and whatnot...
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i wrote it´s the same battery ;)...disassembled my h140 and put it´s battery into the ihp-100.
didn't read that :D Fred must be right then, buffer matter :)