13w7 advice

[csknight 10+ year member]

homeboy's probably fried due to improper amp settings/electrical. I run 4ohm rated amps at 1 ohm and 2ohm rated amps at half ohm all the time. The enclosure and the speaker wire you use will affect the impedance seen at the amp so when you wire to .75, it will rise above 1ohm. Just keep the bass boost at 0 and only tune with the gain and filters. There is a thread about how to tune with a digital multimeter if you can't do it by ear very well. I would look through that thread to be safe.
from .75 to 1ohm isn't much of a difference and the impedance rise will more than make up for it.

I'm using 16 gauge speaker wire and built my sealed box to the jl specs for a 13w7.

so should I try and keep the gain real low as well?

 

[skylineTT 10+ year member]

I'm using 16 gauge speaker wire and built my sealed box to the jl specs for a 13w7.so should I try and keep the gain real low as well?

Honestly, just set the gain to where it doesn't distort but still gives it some good power. I HIGHLY doubt that amp is going to fail.

 

[wenn_du_weinst 10+ year member]

you people do not know how impedence rise works

 

[skylineTT 10+ year member]

It is mainly due to enclosure tuning and resonance afaik. Running long runs of thinner wire will increase the resistance marginally though.

 

[wenn_du_weinst 10+ year member]

impedence rise is much more complex then people give credit for. Things like volume, temp, humidity, enclosure specs, barometric pressure, hell even the amount of dust in the air will all change the reactive load your amplifier sees.

 

[skylineTT 10+ year member]

true. impedance drastically changes as the coil moves and small variables such as the ones you listed can affect what is seen at the amp. Enclosure is the main one I have always heard most about.

 

[hispls 5,000+ posts]

you people do not know how impedence rise works

This. Safe to say that there is a high probability that while playing music that amp will see nominal impedence at some point.

ITT People who don't know what an impedence curve is determining the impedence at any given frequency in an application they've never seen. Full of fail.