iriver iHP-100: no plugin-power

[Arni99]

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).


when using my 12V bbox all is fine though.

[Liquid Drum]

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...

[bonzo71]

I also purchased the same unit from this seller and am having the same issue.  Works fine with a preamp or battery box. 

[bonzo71]

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? 

[Arni99]

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.......

[bonzo71]

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. 

[petur]

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)

[kskreider]

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.

[Arni99]

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

[kskreider]

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.

[Arni99]

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.....

[bonzo71]

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. 

[petur]

I have asked a fellow dev who has an iHP100 to measure on his unit, I hope to have results on this tomorrow...

[petur]

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.

[Arni99]

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 .