Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Construction Tips Construction techniques and tips

Are this parts ok for my project?
Are this parts ok for my project?
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 22nd August 2012, 04:19 PM   #1
claustro is offline claustro  Italy
diyAudio Member
Join Date: Dec 2005
Location: Florence
Default Are this parts ok for my project?

Hi all,
I am Andrea from Florence Italy.
i am totally noob in thies field and before make big mistakes I would like to know if my shopping list is ok
I would like to build a small boombox for using it with my mp3 player.

I am planning to do the enclosure in wood or plastic about 30 cm ( 11 inch) long and 20 high (8 inch)

The very cheap ampli I would like to use is this one Y148 Audio Amplifier Module - Free Shipping - DealExtreme
those are the specs , I am planning to use it with a small heatsink

- Adopts YDA148 high-efficiency digital audio power amplifier IC
- DC input voltage: 9~15V
- Current: 2~4.5A
- Power output at DC 15V input: 15W x 2 (8 ohm), 30W x 2 (4 ohm)
- Power output at DC 12V input: 10W x 2 (8 ohm), 20W x 2 (4 ohm)
- Needs heat sink at 4 ohm, doesn't need heat sink at 8 ohm
- Frequency response: 10Hz~20KHz(+/-0.2dB @1KHz)
- Load speaker: 4 / 6 / 8 ohm
- SNR: at least 90dB
- Harmonic distortion: THD+NC no more than 0.1%P=0.1W

I am totaly stuck regarding the speaker, I am unable to decide if I have to use only 2 woofer or 2 woofer + 2 tweeter and crossover. But how much ohm ?
Another option would be a couple of 2 way car speaker.
Can soemone point me in teh right direction for choose the right speaker for this little amp?
Thank you

Last edited by claustro; 22nd August 2012 at 05:37 PM.
  Reply With Quote
Old 23rd August 2012, 06:22 AM   #2
gmphadte is offline gmphadte  India
diyAudio Member
Join Date: Jul 2003
Location: Dona paula, Goa
U can use any speaker whose nominal impedance is 4 ohms or more. It can be two way or more. Avoid using car speakers as they r more for rough n tough use and sound may not be that good.

Gajanan Phadte
  Reply With Quote
Old 23rd August 2012, 07:36 AM   #3
picowallspeaker is offline picowallspeaker  Italy
diyAudio Member
picowallspeaker's Avatar
Join Date: Apr 2007
Hi Andrea
you can PM me since we live near each other
I have some old Pioneer coaxials for car to lend
  Reply With Quote


Are this parts ok for my project?Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: 100 small parts, R,C,Reg, Op Amps and more! All parts usable in "O2" DIY Project imminentdomain Swap Meet 2 30th January 2012 02:45 AM
First Project parts question Fivetide Parts 2 2nd August 2011 09:52 AM
New Speaker Parts for a future Project form109 Multi-Way 5 28th June 2010 11:49 AM
lots of project parts ... Lagroute Swap Meet 2 29th August 2006 10:30 PM
Amp Board Project for Parts speaker Swap Meet 0 22nd August 2005 02:02 AM

New To Site? Need Help?

All times are GMT. The time now is 04:48 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio