Neuros Technology Forums

I recently set up my MPEG-4 Recorder 2 and the audio on my video files is way too quiet on my PSP even with the volume at max and headphones - it is still very hard to hear (particuarly on a NYC subway). I have checked the cabling  - Any suggestions?

Thank you

The volume on the PSP is a known issue, you might be able to find a pre-amp to boost the volume on the PSP.

Thanks for the reply, I really understand the PSP volume being a known problem, but I mean its really, really quiet. I cant imagine everyone else is really having a productive experience with this unit and the PSP if this is the outputted volume.

Assuming the PSP has a standard headphone jack (I don't have a PSP), you could get a Boostaroo as a workaround. They are a small, portable, battery-powered amplifier. Although you will have to spend a little money, the device is well-liked and has many possible uses.

Check your audio and system settings.  The location may vary on different versions of the PSP firmware.  Turn off AVLS.  This is the volume limitation of the PSP.  The option to remove this is available on some versions of PSP firmware.  If not available, a pre-amp would be the next best option.  If you were able to to raise the recording volume with a firmware update, which we are probably not, your recording could then sound distorted on the device that you use to play back the file.

Neo has a good idea.  I have heard of people doing that same thing with the PSP before.

You may also want to see what updates are available for your PSP.  Maybe this way, you can gain the option to turn off the AVLS.

The audio is far to low without the earplugs, I hooked up a cheap RadioShack amp I had collecting dust between the audio out (from VCR ) to the audio in (Neurous) The audio output on the PSP now has to be turned down it is so loud.....Just had to add this is one terrific recorder if you want video playing on your PSP no more time consuming conversions, definitely worth the money.

Weeman thanks for the post.
Can you tell me the amp you're using? I have been looking for any kind of video or audio inline amplifier but they are usually splitters. All the audio amps I find at radioshack don't use the rca cable style. Thanks

You could try to build (or maybe buy on ebay) your own CMOY amp:
http://tangentsoft.net/audio/cmoy-tutorial/

Thanks SGelo I am actually using the RadioShack version of the Boostaroo for my PSP, its still not loud enough, but works.

I was wondering what kind of inline amp Weeman was referencing, that goes between the video source signal and the Neuros to boost the audio during the actual recording.

The amp is 10yrs old but works great, I use the video out on the sat box the audio out on the vcr, crank the amp volume to 3/4 volume to minimize distortion....Here's a couple of pics of the old amp.

http://i13.photobucket.com/albums/a297/Michael4141/Amp1_resize.jpg

http://i13.photobucket.com/albums/a297/Michael4141/Amp_resize.jpg

This little circuit works great. Very cool and compact.
Circuit with instructions:
http://www.headwize.com/projects/showproj.php?file=cmoy2_prj.htm

quote:

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Originally posted by Weeman

The amp is 10yrs old but works great, I use the video out on the sat box the audio out on the vcr, crank the amp volume to 3/4 volume to minimize distortion....Here's a couple of pics of the old amp.

http://i13.photobucket.com/albums/a297/Michael4141/Amp1_resize.jpg

http://i13.photobucket.com/albums/a297/Michael4141/Amp_resize.jpg

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Ex-Navy

I connected from the audio out of my VCR into a Xin SuperMacro Headphone AMP (increased the audio output of the portable amp significantly,) and output the audio into the cable that came with the Recorder 2 into the recorder 2 itself - and I didn't find any increase in the volume. [:(]

Is the line input to the Neuros Recorder 2, audio fixed to a certain volume?????

While the boostaroo helps increase the PSPs lack of audio, the actual MPEG-4 video clips the Neuros creates have volume levels much much too low to be acceptable. When i create DVDs from the MPEG-4s the volume on most TVs isnt enough.

I recently added the TCC TC-400G/L Phono preamp from http://www.phonopreamps.comto the line. It increases the volume 40db+ turns out that is way too high, and causes a tremendous amount of distortion.

After speaking to the guy who runs phonopreamp he suggested their TC-740A, http://www.audioreplay.net/TC740App.html that has a rear-panel attenuator switch that is supposed to help with recording from higher end sources unlike the TC-400 which is for vinyl records.

I will try the TC-740A and let everyone know. This is not a PSP problem its a Neuros problem and I shouldnt have to spend $65 in order to record audio at a reasonable volume.

The volume of the sound for the recording depends on the source as much as on the recorder. I am recording from different sources and I am getting good sound quality and it is definitely loud enough (sound is better if I record from a clear channel with my cable box, so channels have a lower sound output than others). As mentioned in the post above, amplifying the sound of the source is a possibility but will lead to some distortions.
What sources have you been testing? Is there a difference from one source to another or the recording level for the sound or is it the same at all time?

FJ

I am using a TiVo unit and I have tried it with a DVD player and even my xbox. Straight in with neuros cables, through a switch with different cables. Straight to unit with included cables, and using the items cables and a coupler to the neuros cables.

No difference. The cables that come with the unit are very touchy. If I move them while plugged in I can see a loss of picture quality and increased sound distortion. Since they are proprietary they can't be swapped out so they are the only consistency aside from the unit. Are my cables defective?

The new amp works better than the old one. But there is still clearly distortion even at the lowest level of gain only +1db.

Thank you

I had the same problem. I record videos from my DVR for my ipod and I like my music loud. I read the forums and I wanted a cheap solution. I bought a cheap 4 channel mixer from Radio Shack. http://www.radioshack.com/product/index.jsp?productId=2102920&cp;=&pg;=2&origkw;=amplifier&kw;=amplifier&parentPage;=search It works awesome. I can set the levels for movies or music and it is only $39.00

the volume of audio on PSP will increase 30 percent on R2 FW V2.00.10.

North

quote:

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Originally posted by North

the volume of audio on PSP will increase 30 percent on R2 R2 FW V2.00.10.

North

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What is "FW V2.00.10"?  Is that a Neuros patch number or a PSP patch number?  (Thanks!)

FW v2.00.06 or later for Neuros R2 that meaning PSP V2.7 problem have been solve.

The beta version for "customer test team" last week was v2.00.06.

from .06 to .10 we fix some(maybe all) issues that feedback from "customer test team".

North

Fixed. Update your firmware here: http://www.neurostechnology.com/support/support_MPEG4_R2updates.asp

Neuros Ops