Hi anyone... I'm a few hours of my sunday rehearsal, and the Crate is acting funny again...  :duh

The brrr brrr is, maybe, not normal harsh, sounds like the cone is about to give us the last exhale... jajajaja, the old speaker who is doing that is an SCM Electronics 86-105-04 4 ohm, I leave you guys a recording of the noise, http://alrocmedia.net/GX15-brokenSpk2.mp3 in the first part you can hear the original speaker doing that funny noise, the clean and overdrive channels sound good enough... in the last part you can hear the new cheap-o-speaker from unknow father Jiabailum 8ohm 100w sounds really bad on high levels... oversaturated... it is the circuit or the speakers? I need that schematics to find and maybe upgrade the GX-15 to a GX-15R and use this amp for home practicing and rehearsal vocals.

Thanks for the advices and the great book from TeemuK, wich btw is now my personal hero 

Quote from: STDog on April 04, 2009, 09:41:48 PM
You might should read teemuk's book.
http://www.ssguitar.com/index.php?topic=711
He discusses some of the issues with "Hi-Fi" speakers for instrument amplifies.


In short, you need to find a good instrument speaker.

The cheap speaker you had my have damaged the circuit too.

Tnx :tu: I'm downloading it... and yes probably the circuit is damaged, now I'm looking for build a 100w amp that I find here http://sound.westhost.com/project27.htm as a project and meanwhile get another practice/rehearsal amp, if you guys can give me a hand on that I'll be more than happy... sorry to post it here I'll open a thread on my advances as soon as I start the project.

Greetings.

Hi guys, my GX-15 is making a weird noise like brrrrr brrrr when turn the clean level up and use some LOW eq, I thought it was the crappy speaker, a friend toast the original one and replaced with a cheap 4ohm one no data on Watts printed btw, today I buy a 8ohm speaker used mostly on HiFi but 100w uhmm I can't find a 4ohm 30W or a 8ohm 15W as the specs says... the brrr brrr is gone, but now the poor GX-15 sounds very low and the channels are oversaturated when go far from 6 on any level knob... Teemuk can you be kind and pass me the schematics on GX-15 and GX-15R or if you know a way to upgrade to a better GX to deal with the brand new speaker.

Thanks in advance and greetings to all.

Alroc