Another clip!

[Jackie Treehorn]

I just got one of those Zoom H4 Handy Recorders. It's definitely one of those "how did I survive without it???" items for me.

So, here's a wacky Express clip, no movie necessary!

http://www.theinside.net/Expressclip2.MP3

I think those EL34's are about done, though....

[joe6v6]

Sounds like they still have some life left in them to me, Great playing, not a bad recording either. Can you give some details on the guitar, speakers, amp settings etc.

JOE

[Allynmey]

Jackie, I still have your original "wreck" movie you made! I listen to it once in a while!

[keithrick]

Cool clip Jackie! It sounded like that clip was fun to make! Is that with the Liverpool PI values?

[Jackie Treehorn]

Yeah, it was a Warmoth hardtail strat alder/rosewood, Van Zandt pickups, and an early seventies Marshall 1960B with later 1977 75hz G12M Blackbacks. SM57 right into the Zoom Recorder. I put a little reverb on with my "vintage" copy of Sound Forge. Dense Room it was called.

Yes, the phase inverter is Liverpool values 39k tail, 1k Cathode. -30.5 bias volts; it's pretty important since there's less drive in the PI. The whole amp is pre-Francesca so there's lots of different values here and there. 250k Treble and Bass pots, .022 into phase inverter, .047 PI to power tube grids. The power supply is my own layout. Riken Ohm resistors in the signal path except for a 68k metal film feedback resistor, 716P caps with the exception of the input to the third stage which is a .001 6PS paralleled with a .001 ceramic. I went back and forth on that paralleled ceramic. I originally had the ceramic in place, then I switched to single film cap, and now I'm back with the ceramic in place. I think it adds a touch more swirl, but it also puts a little touch of grainy fizz on top. I think I'm going to have to either parallel another smaller cap or change the cap into the PI a bit.

Sorry the clip is so long! It certainly is fun cranking these amps up. They kind of play themselves a bit, so it's kind of like you're playing off the amp a lot! Thanks for the kind words, too!

[captain_rusty]

Sounds great
A good demonstration of the versatility of tones from a single-channel amp
I love the feedback on the cooler intro and outtro bits.

[Icetech]

Sounds great... all these clips always make me wanna build one:)

[kyoungsteadt]

Sounds great!

[Clyde]

Super! If you don't mind, what TX's are you using? What would some of the voltages be and what's the primary Z of the OPT? I never seem to be able to use caps that big as my amps always get too tubby. Nice job.

[mdroberts1243]

I just got one of those Zoom H4 Handy Recorders. It's definitely one of those "how did I survive without it???" items for me.

So, here's a wacky Express clip, no movie necessary!

http://www.theinside.net/Expressclip2.MP3

I think those EL34's are about done, though....

What is your setup for recording with the Zoom H4? Are you using the built-in mics? Mic modelling? How far away?

In my first tries the built in microphones seem to clip/distort while close-mic'ing the amplifier.

Thx,

[benoit]

What is your setup for recording with the Zoom H4? Are you using the built-in mics? Mic modelling? How far away?
Thx,

It was an SM 57 straight into the Zoom. Sounds close mic'd to me.

In my first tries the built in microphones seem to clip/distort while close-mic'ing the amplifier.

What mics were you using?

[Jackie Treehorn]

Super! If you don't mind, what TX's are you using? What would some of the voltages be and what's the primary Z of the OPT? I never seem to be able to use caps that big as my amps always get too tubby. Nice job.

They are the standard Heyboers, 5.2k output transformer. The voltages are pretty close to the standard Kelly/Francesca schematics. Well, I've got a lower than standard cap into the PI, .022 vs .1, so maybe it works with the .047's to the power tubes so there's not too much low end mush. I think the pictures of Ginger looked like .047's.

What is your setup for recording with the Zoom H4? Are you using the built-in mics? Mic modelling? How far away?

In my first tries the built in microphones seem to clip/distort while close-mic'ing the amplifier.

Thx,

This was a SM57 plugged straight into the Zoom's pre, close mic'd on the cabinet. Yeah, I don't think the built in mics would be optimal for close mic'ing a cab. I haven't messed around too much with the mic modeling. I tried them but wasn't blown away by them, so I think I leave it off for the built in mics.

I did some further experimentation with the paralleled ceramics around the third stage. I ended up with a .0022 6PS film and a 470 pf Sprague ceramic into the third stage and then paralleled the .022 out of the third stage with a 330 pf AND a 110-150pf (can't remember exactly) ceramic. Some of the ceramics sound awful, some sound pretty good. You can really tune in the amount of softness/granularity on the highs. It also seems to have some effect on the guitar/amp interaction which I like! Definitely worthy of experimentation, imo. I'm beginning to think the 716P with a parallel ceramic may be the ideal coupling cap....for the moment, at least

Here's a picture where you can see the parallel caps...

[img:640:480]http://www.theinside.net/misc/HW4.JPG[/img]

[geetarpicker]

Nice clip!

[mdroberts1243]

In my first tries the built in microphones seem to clip/distort while close-mic'ing the amplifier.

What mics were you using?[/quote]

My first experiments were with the built in mics... been playing with dry clips (Guitar recorded DI to the H4, phones out to amplifier for feedback/dynamics)... then in four track mode: play back the dry clip and record stereo on two other tracks with the built-in mics (you just have to adjust the output mixer to only play the dry clip and knock down the default output settings on the recorded channels so they don't feedback through the amplifier).

I've found that with a cranked TW I have to get 6 to 8 feet back to avoid the mics distorting... too much room ambience creeps in.

I've got an SM57 coming... hoping that will help.

On the positive side... dry clips look like they can provide an awesome tool for a/b/c/d comparison and documenting progress of a project as it is tweeked. And the four-track mode of the H4 is a super-simple way to quickly grab a recording... or many recordings (quick knob tweeks, etc.)