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This question is aimed to TRUE Elec Engineers, not fuse or wire directionality believers.


Has any of you ACTUALLY worked with and recommend a SSR which does not introduce any audible distortion on the speaker line and which can operate with a large range of trigger voltages (12 - 48 VDC, may need to have on board voltage regulator for this range).  I am building a speaker DC protector and do not want to use electro mechanical relays becoz of DC arcing and contact erosion issues.  It needs to be capable of switching up to 15 amps at about 100 volts.

Only TRUE engineers reply please.

Thanks

128x128cakyol
cakyol's avatar
cakyol OP
940 posts
 
I did not mean to say I wont use a fuse. This is an ADDİTİONAL protection. Fuses will of course be there. 

And yes I will need a mosfet for at least 150 Vdc since 100 v is too close for comfort. 

As for fuse directionality changing the quality of sound I am sorry to say that I have done tests on this and have not observed ANY sound changes whatsoever. My ears are normal human ears not superhuman :).  So as far as PERSONALLY I am concerned fuses and how they are inserted, do NOT AFFECT sound. 


cakyol's avatar
cakyol OP
940 posts
 
@gibsonian. Thanx for sharing your experiences with phase linear.  I guess i am trying to err on the side of being excessively cautious and not take the risk of leaving the tweeter protection to its filter capacitor. 
raindance
56 posts
 
Take a look at this link: http://sound.whsites.net/articles/mosfet-relay.htm
colin44ct357's avatar
colin44ct357
122 posts
 
Hi Gibbs
I was referring to the main drivers that will burn, I am well aware of the audio bypass cap on tweeters...which wont pass dc.ANDthere are speakers out there with a resistor to limit the tops, so they could be smoked.Many retro speaker systems used a resistor on the tops.
raindance
56 posts
 
@cakyol

Please look at the link I posted. It should answer your questions regarding the use of solid state relays in audio amps. 

 
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