New to the forum, looking for some advice. Sorry about the long post.
I've been researching a low volume setup for the living room / bedroom / recording environment and I'm trying to avoid the modeling amp route and get the real deal. I have a Vypyr 30 combo that is decent for what it is. I have a DAW setup with a decent interface and Reaper, I have Guitar Rig and it's admittedly not bad sounding for being completely digital. Having read good things about the THR10X I am probably going to score one of those at some point since it fits the bill.
But I really want a real tube amp that can run quiet. I'm hoping to get close to the tone I had back in the day when I ran a Mesa single rectifier into a Mesa vertical 2x12 that was loaded with EV12Ms. My main player was an LP standard with a Dimarzio X2N in the bridge, and it sounded like the gates of hell opening when I played a gallop riff through that thing, sonic ecstasy.
Heard the Dark Terror in a store and liked it, esp. with an OD808 in front. But I ended up picking up an open box 6505 MH instead and have it paired up with an old Mesa 1x12 Thiele that has a 75W Warehouse in it, I have to open it up to see the exact speaker. The 6505 MH acted up when I first got it, one of the tube status lights was red. Noticed the corresponding tube was not lit. Turned it off, pulled both power tubes and reseated them into the opposite socket to see if it was a bad tube but when I turned it back on a bit of light flashed from the back and they both lit up, status lights were green.
This was a few weeks ago and the amp has worked fine since then but the hairy/fizzy sound is a real problem. I'm playing at 1 watt setting, with pre-gain at 4 and post-gain at 1.5. OD808 on or off makes no real difference. MXR 10B EQ in the FX with 16KHz dropped reduces treble but the hair/fizz is still there. When it is mostly noticed is when I get right in front of the speaker and do any chugging. In case amp or tubes are bad (it was an open box after all), I'm returning it this week for a new one.
It sounds good otherwise, and the fizz is a known issue with the bigger 6505+. Assuming the new replacement I'll get in a couple of weeks sounds the same, are there any things that I should try before I give up on the head? Would replacing any of the preamp 12AX7s with a 12AU7 help? Or a Tung-Sol instead of the stock JJ? Speaker or pickups worth considering? With other mini heads is this same issue going to be present at the lower volumes? I feel like my options are a bit limited, there are only a few heads that do 1 watt and are geared for metal distortion and I don't really want to drop $500 on a Rock Crusher.
Maybe someone here has had the same issue - I did search the forum but did not find anything specific to the 6505 MH. Thanks in advance!
I have a 6505MH too.. First, understand that 6505/5150 amps are just hairy in general, right?
Their distortion is more like a buzzsaw; whereas other amps, like my ENGL, for example, have a smooth saturated distortion that's more liquid in character. I've found that if you want to get rid of some of that "edge", you have to just fiddle with your balance between the presence and treble.
On the MH's EQ, the treble knob brings a bit of upper mids along with it. I dial this back a pinch in favor of a bit more presence to brighten the tone. You'll know where the presence needs to be adjusted too, because the instant you pass a certain point, the tone becomes sibilant and over-bright.
Then you have some other factors like what kind of cab you're using, guitar, pickups.. etc. I have an Orange cab with a closed back. Its thick-ass cane-woven grill cloth and huge bass response help shave some hair off the V30's and 6505 distortion.
To my ears, they offer a specific sound that can be aggressive, tight, and scorching. I only like to tame the amp noise and excess hair, but otherwise let its raw-ass tone run free.