2. amps-preamps
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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

cakyol

Showing 4 responses by gibsonian

gibsonian
73 posts
 
Most speakers have a capacitor in circuit before the tweeter which blocks all DC.   The tweeter won't be harmed in this case.

I used a Phase Linear 700 without output relay for years, (original design had no relay) and it had multiple issues and would go full DC (105V) on  occasion.   Fuses protected the speakers each time this happened.  

Mechanical relays work as well to protect speakers.   Two solutions out there already, that are time tested, and my empirical experience confirms it quite well.   
gibsonian
73 posts
 
What is a fuse believer?
gibsonian
73 posts
 

It’s an expression used by someone who still thinks there’s room for argument regarding aftermarket fuses and fuse directionality. A renegade. A refusenik.


Ok, then that sounds a lot like me then.  Not a fancy fuser here.   Although wire directionality as in IC directionality is a thing, with a purpose. 

gibsonian
73 posts
 
3:18am
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.

A simple in line fuse will protect your main drivers that have no blocking capacitor.    I have much experience with this as well.
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