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View Full Version : Auto-Sensing Amp for In-Wall/Ceiling Speakers



WSLam
2008-08-13, 22:47
I am in the middle of renovating my new place and will have about 10 SB3/Duet setup throughout the house. Other then my main HiFi rig, I am hoping to deploy in-wall/ceiling speakers. The speakers wire will run to a place where the Duet/SB3 will be placed. What I now need is a auto-sensing amp that 1) must be small, 2) requires little to no ventilation. I do not need lots of power, they are just for background music.

Would it be wiser to do a multi-zone amp and place all the Duets together? Lots more wiring, but may be easier to manage?

Any suggestion? Thanks!

aubuti
2008-08-14, 05:49
For single zone auto-sensing amps, a few good options are the AudioSource 100, AudioSource 200, and Parasound Zamp. Also, the Sonic Impact T amps are not auto-sensing, but draw so little power when idling that they may as well be auto-sensing.

As for concentrating the SB Receivers in one place with a multi-zone amp versus distributing SBR & amps around the house, there are pros and cons of each, as I'm sure you're aware. I'd lean towards putting SBRs & amps around the house, and pulling a lot of Cat5e or Cat6, rather than pulling a lot of speaker cable, but I can see the benefits of the other way.

WSLam
2008-08-14, 07:47
For single zone auto-sensing amps, a few good options are the AudioSource 100, AudioSource 200, and Parasound Zamp. Also, the Sonic Impact T amps are not auto-sensing, but draw so little power when idling that they may as well be auto-sensing.

As for concentrating the SB Receivers in one place with a multi-zone amp versus distributing SBR & amps around the house, there are pros and cons of each, as I'm sure you're aware. I'd lean towards putting SBRs & amps around the house, and pulling a lot of Cat5e or Cat6, rather than pulling a lot of speaker cable, but I can see the benefits of the other way.

Yes that is the dilemna isn't it! I can see advantage in both approach. I cannot decide if I should do a distributed approach or one centralized approach....

cliveb
2008-08-14, 12:43
Also, the Sonic Impact T amps are not auto-sensing, but draw so little power when idling that they may as well be auto-sensing.
If the amps can be hidden away out of sight, and if ultimate sound quality isn't a priority, then you can get very cheap modules based around the same Tripath class-D chipsets from a company in China called Sure Electronics. See http://www.sure-electronics.com/product/goods.php?id=12. They sell them through eBay for about $30 - do a search for "TA2024".

lanierb
2008-08-14, 14:03
While there are reasons for preferring a centralized system, a big negative is sound quality. You can hear an obvious difference on even cheap equipment.
I think that the smaller Tripath based amps in particular are likely to sound crappy with very long speaker runs (and I'm a fan in general).

On the other hand, the Tripath amps would be great for a decentralized system as they are inexpensive, have very good sound quality if built right, can be tiny, and you could just leave them on all the time and they would use almost no power when the sound was off. (I have a Charlize that I built up myself that I use with an SB3 in one room and it's beautiful!)

Kuben72
2008-08-14, 14:48
How about this http://www.sumoh.com/

Eric Seaberg
2008-08-15, 07:47
I've got two of them for driving patio speakers. Great price, too. They have two inputs, power auto sensing and a loop-thru on the first input to send the same source to multiple amps... how I use it. Info here...
http://www.amazon.com/AudioSource-AMP-100-2-Channel-Bridgeable-Amplifier/dp/B00026BQJ6

aubuti
2008-08-15, 21:40
Yes that is the dilemna isn't it! I can see advantage in both approach. I cannot decide if I should do a distributed approach or one centralized approach....
One other thing to consider is how much you'll be wanting to synchronize the music in different rooms. While there have been huge improvements in the reliability of sync'ing since slimserver 6.x, if you plan to have the same music playing in multiple rooms most of the time then a multi-zone amp becomes more appealing.