New-Mod-On-The-Block CF-18 Stereo Sound

Some of you modders may be interested to see these pics of what i am in the progress of doing !!!

http://s633.photobucket.com/albums/uu58/serialmodder/CF 18 Moddings/

Thanks for all your superb information that i have gleaned from these forums over my last few months of lurking.

Hope the link thing works as its only my second post ever.

 

Very nice job! Looks fantastic!

 

Were there other speaker options you concidered to use other than the Fujitsu p7010 Speakers?

 

Thanks for your praise h3lpmedic, I used p7010 speakers cause i had a dead p7010 and they fitted after some trimming down, By the way they are in place but i haven't tested them yet as i am still working on the amp circuit. They might sound like cr*p when finished, but they sounded great in the fuji.
The single mono speaker in the cf-18 is Bad.

 

Question

Do you have a stereo input for the speakers, or are they wired for mono use?


Alex

 

I'm planning on using the stereo headphone output to feed my amp circuit, The amp circuit has a headphone output in return to feed the headphone out.

ummm does that make sense ???

 

SerialModder -

Looking GOOD!

Of course your water-resistance is compromised a bit, but a bit of clear silicone SHOULD fix that.

Save yourself some hassle & look on eBay for a cheap set of USB powered speakers like the Dell a225 or ax210 - they use a high-efficiency 600mWx2 IC that will run quite happily off of any readily available 5V/500mA source.

mnem
EFFF-EMMM... FM's got no static, no static at all...

 

Yes, it makes sence
Even if they were hooked up mono they will be a huge inprovement over the bottom mounted speaker

Alex

 

I was serching for some speaker alternatives and found the following sites:
http://www.buzzer-speaker.com/manufacturer/speaker/rectangular%20speaker.htm

http://www.excelcomputerinc.com/html/xlsearchspeakers.asp

I hope these can help you and other in similar future mods.

 

Hi mnementh

Thanks for the advice i did order some small usb powered Trust speakers but they would trip a warning from the usb port that they were using more than 500mA, the sound quality was not that grate. plus the amp board was to bulky i.e. not smt.
After some looking round i ordered this tiny SMT amp IC but its currently still in the packet. Awaiting time. This is the link

http://uk.rs-online.com/web/search/searchBrowseAction.html?method=searchProducts&searchTerm=651-1118

This thing is tiny ( about the size of my little finger nail ) and will test my soldering skills to the max.

Everything needs to be very small as i intend to pack a lot in.

When i have made more progress i will post lots more pics.

 

Whuf... a LOT of hassle to produce an audio amp that is easily available by scavenging from other sources.

What do you intend to use for you PCB design? Eagle? I've used theirs for single-layer & Omni-Fab for multi-layer; though I'm sure Eagle has a multi-layer version in freeware/discountware by now.

Are you trying to mount the amp inside the LCD Bezel? Is that why you're going to so much trouble?

mnem
Feeding the insanity...

 

Serial.... WAY TO GO! Looks like you do very quality work!

I was tearing apart some carcasses of some various laptop bottoms... removing screws... Deciding what parts I wanted to keep.... I tore off a set of speakers almost exactly like that. I clipped the connector off to throw it in my pile of stuff like that.... Then realized what they were... No biggy.... Just lived and learned...

Agian... A VERY mice looking mod!

 

The good thing about connectors is they are easy to put back on

Nice work so far

 

Thanks for your advice, I may well still go along that route if i find the right circuit already made. As for the pcb design, i will probably just use a smt matrix board and tiny patch wires for now, yes lots of work and messy i know

I have a lot of stuff i intend to pack in so the smaller the better.

 

Thanks TB that means a lot coming from the top of the tree.

 

Ummm... you are aware that these ICs are designed to use the copper cladding of the PCB underneath as a heatsink, right? Soldering them to a matrix board will NOT provide adequate mass; the solder pads are too small & not connected so they cannot radiate heat.

mnem
Wooh...Hot... HOT... HOT!!!

 

Thanks for the advice buddy, i think you are right, I'm in over my head if i start messing with parts that small.

So took your advice and found a small amp circuit ready made inside a Nokia battery powered speaker. (Model MD-8) it uses this chip which has similar spec to the chip i have.
http://www.standardics.nxp.com/products/sa/datasheet/sa58670.pdf

The PCB measures approx 45mm x 35mm x 5mm

so should shoe horn in somewhere.

By the way do you know anything about Picaxe microcontrollers? i was hoping to use one in conjunction with some small back-lit push buttons to turn the various usb hub powered items on and off (push on push off) may need some help in writing the code

 

Sounds like exactly what I was suggesting; will save you a LOT of arseache. You should be able to replace the volume control with a trimpot from THE SHACK if it's too big to fit where you want it; just get the gain set to a decent middle range that works with the software volume control...

As for the Picaxe... I've never been much of a programming guy; more hardware oriented. Sorry.

mnem
Of course, we could just smash it with a rock when we want it to stop...

 

Just wanted to know if there were any updates on this mod?