Hartke A70 power amp failure

[Robert House]

Hi there.

I have Hartke A70. I was playing and suddenly it started to sound "crunchy". I Turned it off. I went home. And wait next...

[dumper]

Hi there,

I've just rewired my 4x12 cab to become two 2x12s to accommodate for a new (old) Montgomery Ward head. One pair of speakers is playing...

[PeterPan]

This is a linear speaker array I built for solo performance, that thankfully worked out very well, and barely cost over $200. For background, I currently...

[Stevie B]

I am fixing a 1969 Twin Reverb for a friend.
I had a few issues - reverb out, two prong power cord complete with death cap, slight hum.
But...

[supercool]

I built this for a school art project to compare the similarities and differences between art and science.The three strips of LEDs and another ring...

[horgan]

Hi All,
First time poster here.
Im having an issue with an RCF 310A speaker,
Its distorted/muffled at all volumes, doesnt matter wether...

[zulu89]

Hello!

And first of all, thank you in advance for any guidance or help anyone can provide me with.

I recently picked up a dirt...

[mcdemo49]

I just picked up an Ampeg B-100 bass amp at a yard sell for my son. The guy who sold it to me said that all that was wrong with it was that it needed a new...

[Gtr_tech]

Here's one for the WTF files. Ampeg Portabass 2-12 neo comes in with
the complaint of buzzy sound. Tear off the front grille, tap spkr
cones,...

[AndyM]

I've looked all over, and can't really find any real info on this cabinet. From what I've seen, it looks like a '60s showman, but I'm not at all sure about...

[trojax]

Hi, I was wondering If anyone could help me tweak the dials on my cheap EQ pedal to use it to simulate a speaker. Here is a link to the pedal if anyone need...

[Wittgenstein]

I am in the process of re-doing my first build in order to fix a few minor issues, remove hum, and add 2 more output jacks to the rear of my chassis. I have...

[PepeSilvia]

Dose anyone know where I can purchase 4 and 6 leg through hole 1/4" jacks, such as the kind commonly used as output jacks? I've got a couple amps that...

[ccruz]

Wanted to know if I can put new tulex over the tulex that is already on the cab. The tulex is in good condition. Will it effect the sound of the cab? What...

[Dover]

I have a 1972 Fender Twin Reverb Silverface with Master Volume.


The unit it has recently been re-tubed with 4 matching 6L6's and all the...

[VintageSeb]

Hi, I'm new to the forum. I recently bought a 1484 silvertone head amp it has 35-40 watt, and now I need a speaker cabinet, but I'm confused about how many...

[HansVG88]

I am working on my first amp build based on a champ 5f1. I have installed a external speaker jack that switches so the internal (4 ohm) will not play when...

[bbmonster]

Does rounding over the speaker hole in the baffle make a difference for an internally mounted speaker. I wish I could try it but I used my final pieces of...

[Marcel-X]

About 20 years ago, I bought this Sessionette:75 for a fair price, considered the wear. I can't recall exactly when the sound problem occured first, but there...

[stcowboy]

I'd like to run a Jensen P8R (rated at 25W rms) out of the speaker cabinet extension of my Traynor YVC40 to help get a punchier top end (and more sound before...

[samtfaulkner]

I have a 'torque T100 L' guitar amplifier which has one single speaker inside
I also have aquired a 'peavey impulse 200' speaker which runs at 4ohms....