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Amps that can withstand my inwall speaker system

My inwall speaker system has one pair of speaker port and it is connected to Niles MSA-10 speaker selector which supports up to 10 pair of inwall speakers. My house has 9 pairs of speakers.
So, the connection is amp --> speaker port --> Niles --> 9 pair of speakers.
I've used three amps for the inwall speaker system over the past 15 years, and they all failed: NAD 314 (40 WPC), Mitsubishi DA-A7 (75 WPC), and Hafler DH-200 (100 WPC). They all lasted a few weeks and died. Somebody told me that the output transformer has died.

I have a Yarmaha receiver (RX-V3000) and if I turn up the volume to 9 o'clock, the receiver shuts down. I can barely listen to the music with volume set at 9 o'clock.

I have a spare amp (Nakamichi PA-5), but am reluctant to hook it up to the inwall speaker port. Definitely I am not going to try with my Plinus and Audio Research amp.
What would be the problem? Would I need more powerful amp? Or, tube amps may sustain the load better?
Any comment would be appreciated.

128x128ihcho
6 responses Add your response
ihcho's avatar
ihcho OP
612 posts
 
Thanks for your suggestion.
My in-wall speaker system is set up as to work with Niles 10, as seen here.
https://www.manualslib.com/manual/111490/Niles-Msa-10a.html?page=5#manual
Power amp's speaker out --> speaker-in to Niles --> 10 pairs of speakers. There is no source input in Niles. All 10 pairs speakers can be fed from just one input. 
Anthem MDX-16 does not seem to have speaker-in connection.
https://www.anthemav.com/images/mdx/mdx-16-back-panel.jpg
To work with MDX-16, the wires need to be rewired.

Parasound ZoneMaster supports speaker-in.
https://www.parasound.com/product-images/1250_back_black.jpg
antman
27 posts
 
I am a  Custom installer and do this all day long.   I recommend using anthem MDX amp.   It replaces my parasound 1250.   Or you other option is to use a Sonos amp..  bluesound player    And have each zone separated.    That would solve all your problems.   And you would have better control over the house music.  


ihcho's avatar
ihcho OP
612 posts
 
Great.
Thanks again. I'll definitely go for ParaSound ZoneMaster.
erik_squires
16,056 posts
 
Nope.

Totally different design.  With the Parasound you have separate amps driving each pair.

Best,
E
ihcho's avatar
ihcho OP
612 posts
 
Thanks for your reply.
I might give a try with the ZoneMaster. 
But wouldn't it be working similar to Niles MSA-10?
https://www.smarthome.com/niles-audio-msa-10a-speaker-selection-with-autoformer-impedance-matching-system.html

erik_squires
16,056 posts
 
Your problem is you need a distribution amp. That is, many small amps, not one big one.

You want something like this, which is designed exactly for this situation:
http://www.parasound.com/1250.php
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