|Solid State Talk all about solid state amplification.|
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|
|10th April 2003, 02:54 PM||#1|
Join Date: Feb 2003
Need amp recs for active dipole speaker project
I am building the Linkwitz Lab Orion and need some help. I need 8 channels of amplification but don't want to spend half my college income to get it.
Are there any ideas that you can give me to get 8 channels of around 60-70 watts per that have a flat frequency response?
Any ideas are greatly appreciated. I am not sure what to do right now.
|10th April 2003, 03:20 PM||#2|
Join Date: Nov 2002
Location: Heidelberg, Germany
Re: Need amp recs for active dipole speaker project
A good and simple solution is the LM3886.
At +/- 35 V they will deliver 50W into 8 ohms. Linkwitz suggests to use them for the Phoenix Dipoles. You don't need much more power than this. More power might even be harmful to the woofers.
If you brigde them ("BR100", as described in AN-1192, see the link above) you will need a lower supply voltage (+/- 20V) and eight LM3886s instead of four.
The advantages of bridging are:
- More power.
- Less power dissipation in the chips.
- slightly lower distortion at the same power.
I am going to use 4 "BR100" for my Orions.
|3rd June 2003, 04:36 PM||#4|
Join Date: Jun 2003
Location: Stavanger, Norway
Regarding amplification, Mr. Linkwitz states that because the Orion is such an easy load, using a more expensive amp than the ATi 6012 does not improve sound quality. This of course begs the question, how much cheaper can you go without compromising sound quality? With the 6012, you are, after all, paynig for four extra channels which are not needed with the Orion.
I too am strongly considering building the Orion, and the most promising low-cost amplification alternative I've found is the Rotel RMB-1048 (http://www.rotel.com/products/specs/rmb1048.htm), which is conservatively rated at 8x40 (8x50 is probably closer to the truth). It seems to have decent figures for distortion and damping factor, and sells for about $800 in the US. If anyone has had the opportunity to try it with the Orion, or in any other way compared it with the ATi 6012, please let the rest of us know!
|Thread Tools||Search this Thread|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Theoretical Design - Current Feed Active Dipole Speaker||ThorstenL||Multi-Way||34||2nd November 2006 09:01 PM|
|Active Filter Four for 4way mostly dipole||MethMan||Multi-Way||3||23rd September 2006 03:48 PM|
|Active speaker project||Salinas||Multi-Way||2||18th August 2005 09:57 PM|
|DIY speaker internal wiring recs||zobsky||Multi-Way||10||14th August 2003 07:30 AM|
|Suggestions for amps for active speaker project||pinkmouse||Solid State||4||16th August 2002 02:36 AM|
|New To Site?||Need Help?|