Rms ?

[stl_314 10+ year member]

I have an old school mtx 4 channel. Its rated at 37.5 Rms @4 on 12.4

This thing is big heavy and fused at 75 amps. W/o a clamp how do I know about how much power it really does as I have read all the os mtx is underated

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[disturbed471985 5,000+ posts]

Based just on the fuse it could do around 100x4@4ohm but thats just based on the fusing. Gonna have to clamp it.

 

[stl_314 10+ year member]

Spec sheet on mtx's website says 90watts dynamic at 14.4

I dont have an oscope either, was just curious as im selling it and im sure buyers would like to know

thnx for your info

 

[Scratchy 10+ year member]

If it is the 304, I am sure most buyers interested will know that they were/are seriously underrated, mine clamped at 45 per channel (rounded) . The thing is a great mid power 4 channel. definitely older technology, though, not very efficient, and puts out a good deal of heat.

 

[stl_314 10+ year member]

It is the 304 and ty

 

[stl_314 10+ year member]

My other question is if it only does 45 then why is it fused so high. Say it does 90 at 2 then bridge front and back thats 380, so why would you need almost twice the fusing for it?

Im not saying I go by the fuse size im just saying at 40 amps worth of fuse you could grt 380 watts easily. So why the extra 35 amps of fuse if that makes sence

 

[Scratchy 10+ year member]

the marketing department might know.

 

[stl_314 10+ year member]

Ill send them an email, thnx

 

[Scratchy 10+ year member]

LoL, awesome!

 

[jdawg 5,000+ posts]

If its the old thunder or blue thunder amps it will do double rated, that was back in the 'cheater amp' days when comp classes went by power

edit- curious on the 75amps of fusing, that fuses are in it? Sounds like someone blew one and stuck whatever they has in it

 

[stl_314 10+ year member]

No it literally says 25A on all 3 fuse spots and is the older metal thunder series

 

[stl_314 10+ year member]

Dont have a dmall enough screw driver right here to take off the other half

 

[jdawg 5,000+ posts]

ok nvm, I though it was ones of the older amps, still a great amp though, seen your fs thread

 

[stl_314 10+ year member]

From what I could gather this amp was made in 96-97,