JL audio E1400D

[mike49504]

Whats a good scope wondering what you would recomend since i need to buy a new one

[Perry Babin]

What do you want to spend on it?

[mike49504]

well right now probably about 150.00 since i just spent alot getting my truck fixed

[wondernutz]

not to be a thead jacker or anything but I have a similar amp its a JL e1200 I had a couple shorted outputs I think they were IRF540N's there were a total of 6 and I changed 3 I powered it up and I dident have a protection light anymore and the amp produces clean sound but as soon as I cranked it up it blew one of the 540 I just installed any ideas

[Perry Babin]

I don't know what the original parts were but if the originals were IRF540s and you used IRF540Ns, that could be the reason they failed. If you order new parts for it, try the IRF540As (produced by Fairchild).

[Perry Babin]

Mike:
If you're going to buy a used scope, post (or email me) the auction numbers (assuming eBay) and I'll try to help you get a good one. Only consider scopes with locked waveforms displayed or a guarantee that the scope is in good working order. I'd suggest Tektronix scopes but they're relatively expensive right now. B&K also makes decent scopes.

[wondernutz]

Originally Posted by Perry Babin

I don't know what the original parts were but if the originals were IRF540s and you used IRF540Ns, that could be the reason they failed. If you order new parts for it, try the IRF540As (produced by Fairchild).

how do you or i guess how would i know they are an A fet not N experince??

[Perry Babin]

Do you have the original parts you pulled from the amp?

[wondernutz]

Yea they say IRF540

[Perry Babin]

I'd recommend that you try the non-N version.