Hi DIYers,
I've finalised component selection for my speaker project:
2 way active speakers with a miniDSP acting as a pre and crossover. I am using the B&G Neo8 as my mid and tweeter and the Tangband W5 1138SM as my woofer.
I now need four channels of amplification to fit this system. Note: the Tangband is rather inefficient at 82 dB 1W/1m.
My budget is $100 for amps, power supplies, and postage. I will provide my own casing. I'm very new to electronics so I would prefer something mostly assembled.
Is class D the right place to look? What are it's advantages over chip amps? Are there any chip amps I should also evaluate? Any recommendations would be very much appreciated!
Thanks for your help!
I've finalised component selection for my speaker project:
2 way active speakers with a miniDSP acting as a pre and crossover. I am using the B&G Neo8 as my mid and tweeter and the Tangband W5 1138SM as my woofer.
I now need four channels of amplification to fit this system. Note: the Tangband is rather inefficient at 82 dB 1W/1m.
My budget is $100 for amps, power supplies, and postage. I will provide my own casing. I'm very new to electronics so I would prefer something mostly assembled.
Is class D the right place to look? What are it's advantages over chip amps? Are there any chip amps I should also evaluate? Any recommendations would be very much appreciated!
Thanks for your help!
For what kind of volumes were you aiming? Since both are around 4 ohms so you should be able to find amps which are very efficient with them. Personally, I've been looking at boards built around the TPA3116 chip.
There is a monster thread on amps built around this chip: http://www.diyaudio.com/forums/class-d/237086-tpa3116d2-amp.html . Recently, there has been mention of Ybdz's board which is available from ali-express (I think this is an example: Free Shipping! 1pc TPA3116 Class D digital amplifier 50W +50 W with Silent Sleep Design-in Other Electronic Components from Electronic Components & Supplies on Aliexpress.com ) which comes with free shipping and speaker protection ("silent sleep" should eliminate the startup POP which happens with the other TPA3116 boards). There has also been mention of boards from a seller on ebay audiobah which also has speaker protection. Either should leave plenty of headroom in your budget for solid power supplies.
Were you thinking of rolling your own power supply? Internal or external? External switching laptop power supplies 24v - 100W or so will run you at least $25 unless you can scrounge a couple up from closet/junk pile/thrift store/garage sale.
I'm sure that more experienced members of the forum can chime in with other suggestions.
There is a monster thread on amps built around this chip: http://www.diyaudio.com/forums/class-d/237086-tpa3116d2-amp.html . Recently, there has been mention of Ybdz's board which is available from ali-express (I think this is an example: Free Shipping! 1pc TPA3116 Class D digital amplifier 50W +50 W with Silent Sleep Design-in Other Electronic Components from Electronic Components & Supplies on Aliexpress.com ) which comes with free shipping and speaker protection ("silent sleep" should eliminate the startup POP which happens with the other TPA3116 boards). There has also been mention of boards from a seller on ebay audiobah which also has speaker protection. Either should leave plenty of headroom in your budget for solid power supplies.
Were you thinking of rolling your own power supply? Internal or external? External switching laptop power supplies 24v - 100W or so will run you at least $25 unless you can scrounge a couple up from closet/junk pile/thrift store/garage sale.
I'm sure that more experienced members of the forum can chime in with other suggestions.
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