xflyboy

A Newbie question from a new X51V and BT user.

I've just purchased the Logitech Wireless Headphones for MP3 (980415-0403). The whole setup is supposed to be bluetooth format. I've the paired adaptor and the wireless headphones working and digital sound is good.

Hmmm, brain being ticking . . . I've BT on the X51V (A12 ROM) with the Widcomm hack. Maybe I can use the onboard BT instead of the cumbersome outboard adaptor? I tried using the X51V BT manager to discover the headphone without the adaptor, no luck. I did the same using my Dell Latitude laptop BT manager, no luck.

Can someone please enlighten me to the mysterious ways of pairing the headphones (w/o adaptor) to the X51V/Laptop. How do I know if the Widcomm hack has the A2DP installed and the necessary profile/codes for wireless headphones?

Any help is greatly appreciated. Thanks.

DeeCee52

First to AXImsite. If you have A12 on your ax and/or the widcomm stack you can use your logitechs without the adapter. The logis are tricky to pair. I'm posting from my ax you ican't easily give the threads but search logitechs and bluetooth and you should get some help. it takes longer than you think to establish the link.

mingkee

I can pair easily with logi
you need to press and hold the power button till you see flashing blue and red light
add
pair code is 0000
OK

prissweb

Originally Posted by mingkee

I can pair easily with logi you need to press and hold the power button till you see flashing blue and red light add pair code is 0000 OK

how is the sound quality ? i wanna replace my corded ipod ones.

DeeCee52

Originally Posted by prissweb

how is the sound quality ? i wanna replace my corded ipod ones.

The sound quality is good, not excellent, but is entirely acceptable for use where wires just don't work. I use mine all the time while in the gym, working outdoors, etc.

xflyboy

Thanks DeeCee52 for the head-up. Newbie mistake#1, 'search' is your best friend and I'll definitely try that first next time. A whole wealth of info. uncovered. I'm a tweaker at heart, so many more hacks to play with . . .

MingKee, thank you for posting the solution in your sig. With Widcom V0.5 already installed, do I still need to install the two Tornado cab files before trying to pair the Logitech headphones? Does the HP & Widcom co-exist well for future expandability? A funny story, I did a google search on Logitech BT headphones and found your review and solution regarding this connection problem on amazon.com. However, I can't find your email address on that site for further info. Little did I know you are one and the same right here on this site, LOL!!! This is definitely the best site ever for AXIM users. Thanks.

BTW, the Logitech BT headphones come with the least amount of instruction on pairing or operation. Until searching this site, I has no idea what the different colour flashing lights means. How do I get my laptop to pair, wait until the Blue/Red light starts flashing before trying to discover?

I wondered, can the headband weakness be alleviated by wrapping the mid point with copper wires and covered with 5 minutes epoxy? That might re-enforce/ stiffen the general area of a particular nick mentioned in some posts? I see no nicks yet on my brand new set but I'm usually very careful with my equipment anyway.

DeeCee52

Originally Posted by xflyboy

Does the HP & Widcom co-exist well for future expandability? I wondered, can the headband weakness be alleviated by wrapping the mid point with copper wires and covered with 5 minutes epoxy? That might re-enforce/ stiffen the general area of a particular nick mentioned in some posts? I see no nicks yet on my brand new set but I'm usually very careful with my equipment anyway.

For bt headphone compatibility you don't need anything more than what you have. Works great for me. I have the ipod version and the buttons also work with windows player and mortplayer. I've read references to a fix for the headband in other forums, but I haven't actually found the fix. You delving into the logitech posts on other boards, might yield some results. happy listening.

xflyboy

I finally got the Logitech BT headphones working without installing the Tornado Cabs first. They worked right off the Widcomm stack. Volume is good and I get wma music through the newly installed TCPMP player.

One major shortcoming I've noticed is the 'snap, crackle and pop' noise in the background of the music. The noise is steady through out each song or WMA video I played. I am wondering if the pops are only in the headphone when played through TCPMP. Unfortunately I can't seem to get sound from one WMA video clip played in the WM player and the other are too loud to verify.

Is there a patch/fix for this popping noise problem?

alantdc

I just got my Logitech bluetooth headphones and installed the HP Broadcom bluetooth driver. Unfortunately, I'm am also hearing the snap, crackle and pop noise on all music. This is fine for everything pre-1960, but otherwise, is quite annoying . This happens in both CorePlayer and MortPlayer. What I've found on the boards so far:

- Menneisyys has a wonderful article on tweaks, but this looks like it's for the Widcomm stack only.
- There's a long thread on MobilityToday about the HP-branded version of the headphones. Everyone there is complaining about the crackle and pops, but one poster solved it by overclocking RAM speed from 104 to 117 with Pocket HackMaster. HOWEVER, this was on an HP 4700. I don't want to risk bricking my X50v if this doesn't work.
- A workaround is to use the bluetooth dongle, but that's sort of admitting defeat :-).

Anyone else have any suggestions?

Pocketbrain

http://www.mobilitysite.com/forums/p...set-users.html
Aw man, you beat me to it.

(X)

Bright

I used the Logitech BT headphones with my X51v (A12) with MS BT stack. Paired easily. Sound is great without any snap or hiss.

There is a thread somewhere that teaches you how to strengthen the weak part. Do a search, you will find it.

alantdc

Hmm... I have an X50v and tried out the Flow Control registry change. The clicks and pops are still there . By the way, I was under the impression that the hacked Widcomm stack was only for WM5 devices? The only thing I installed was HP's A2DP Broadcomm stack, as recommended by MingKee. By the way, has anyone tried overclocking RAM to fix this?

xflyboy

Thanks alantdc for the head-up on 'Menneisyys has a wonderful article on tweaks, but this looks like it's for the Widcomm stack only.'.

Originally I was able to pair the Logitech BT headphones (with popping sound) after DeeCee52's suggestion. Like the tweaker I'm, I tried to decrease the BT speed using the BT SpeedSwitch to see if the popping sounds can be eliminated. Nope, no luck and set the speed back to 960K. Immediately I'm starting to notice major skipping episodes which I didn't have before the speed switching. Ahhhhh . . .

I installed the linespeed/block/subblock registry .cab and played with the setting. Linespeed import went okay and defaulted to 256K. Right after importing the block/subblock registry entries, the sound becomes garbled. I read up and tweaked the block from the defaulted '4' to '16' and the sound is good again. For my X51V, original A12 ROM w/ Widcomm hack, the 'good' setting are as follow: line speed = 256 Kps, Block = 16 and subblock = 8. Tornado cabs were not installed (for MS BT?).

Using TCPMP, I'm still getting the odd skips, and the constant 'snap, crackle & pop' in the background of the music. Is my audio expectation too high? I'm expecting 'uninterrupted' CD quality sounds with no extraneous noises from MP3. I'm very afraid to try the overclocking RAM hack as my X51V is still too new to be a brick :( Any further help is greatly appreciated. Thank you.

Edited: I've also installed the FlowControl=0 prior to the above, but not sure if it contributed to any noticeable effects.

alantdc

Wow xflyboy, you tried everything! I don't think your audio expectation is too high. My theory is that is that the people who use the Logitech Bluetooth headphones without an adaptor and claim great sound quality aren't noticing the pops and clicks because the music is all loud or simply have all their mp3's encoded at 32kps . The pops and clicks annoy me too. I recall seeing another post here that said the only way to get high-quality audio with BT headphones was to use the adaptor. It's looking like that's the hard truth for now...

gufoe

Hi all!
I also suffer from the annoying cracking sound with the Logitech BT. But I do not have the Logitech BT headphones, I own the Logitech Audio Sink STR01, which has probable the same receiver inside. On my Ax I'm using the Widcomm stack with the fixed settings of 340kb for the A2DP sound.

When I connect the Logitech audio sink to my Ax and start playing (with Mortplayer), I hear the cracking sound sometimes more and somtimes less, but on average about all 5-10 seconds.

Then I read about the positive effect of the HackMaster-Tool: I installed the trial version for WM5 (Pocket Hack Master Ver 4.08.023) and set the speed to a standard value (not overclocked): CPU 416, Bus 208, Mem 104, LCD 104 and let it run in the background and switched to Mortplayer

And now the curious thing:
No cracking sound anymore! It is replicable: If I kill HackMaster while mortplayer continous to stream, the cracking sound appears. If I start HackMaster and set to the 416/208/104 setting, no more cracking sound is listenable :approve:

It seems that HackMaster produces a special CPU load (maybe caused by the graphical CPU meter), which stabilizes the dataflow between Widcomm and Logitech...

I also tested same overclocked settings (I cannot go higher than CPU 663, Bus 221, Mem 111, LCD 55, otherwise my Ax freezes), but it seems not to be necessary!

Maybe someone can try to comfirm this. A2DP is really great. And now the Logitech Auido Sink works also good with the Widcomm stack (with the MS A2DP it worked flawless).

BTW, does anybody know how I can increase the the thread priority ("priority256") of the Widcomm A2DP driver? I do not know, which one is the right driver and what is his name.

gufoe