Search found 197 matches

by PRNDL
October 8th, 2008, 11:59 am
Forum: Live Sound
Topic: Sound Over-Kill?
Replies: 9
Views: 2051

Re: Sound Over-Kill?

It usually takes some expertise and experimentation to get the sound right in a small club (or a big club, for that matter, but you know all about that). Overall volume and acoustics are the biggest challenges. Some amps sound great in small places, while others need room (it has a lot to do with sp...
by PRNDL
July 23rd, 2008, 10:12 am
Forum: Live Sound
Topic: Using DI Ground Lift to Eliminate Buzz
Replies: 4
Views: 6922

Re: Using DI Ground Lift to Eliminate Buzz

I'm not an expert, but I believe the DI unit uses a transformer to couple and isolate the signals. Lifting the ground lets each unit ground itself. It's safe as long as each unit uses a three prong plug. The most common cause one of the AC lines has swapped the hot and return lines. To test this, yo...
by PRNDL
July 10th, 2008, 4:46 am
Forum: Live Sound
Topic: Break In Periods?
Replies: 5
Views: 1443

Re: Break In Periods?

Some speakers sometimes have break-in periods for the cone to stretch, but tube amps usually don't, although the tubes can might mellow out with time.

What you describe, however, isn't a sign of breaking in ---- more like something is wrong.
by PRNDL
July 8th, 2008, 8:10 am
Forum: Guitar Players Discussion
Topic: Showmanship...?
Replies: 35
Views: 8724

Re: Showmanship...?

I'm just watching my fretboard & not interacting with the crowd. The exercise would be to learn your guitar parts so well that they are second nature, which gives you the freedom to think and act on stage. I recommend practicing with your eyes closed. That usually remedies the need to look at the f...
by PRNDL
June 22nd, 2008, 9:28 am
Forum: Live Sound
Topic: seriously considering line 6 pod but...
Replies: 1
Views: 897

Re: seriously considering line 6 pod but...

In general, multi-effect pedals are great for what you describe - getting different tones quickly and easily, especially for cover bands. The weakness is they sound great, but not fantastic, and certainly not as colorful as the actual effects or tube amps. Another weakness is the amp tone depends on...
by PRNDL
May 26th, 2008, 2:02 pm
Forum: Live Sound
Topic: Excessive hiss from tube amp - need to replace tubes?
Replies: 3
Views: 2338

Re: Excessive hiss from tube amp - need to replace tubes?

First up is to distinguish hiss from hum. Hiss is often due to bad tubes, usually from the first preamp tube, especially in high gain amps, such as the 5150. Begin by replacing that one with a good tube and see if goes away. Hiss can also come from bad or failing resistors or capacitors, especially ...
by PRNDL
May 23rd, 2008, 6:17 am
Forum: Live Sound
Topic: Guitar Cabinet Project
Replies: 4
Views: 1513

Re: Guitar Cabinet Project

>> already know to use good quality birch. Most use select soft pine for cabinets and grade BC plywood for the baffle boards. These days it's difficult to find good quality select soft pine boards. The premium stuff is a lot more expensive, without knots and denser, which makes the cabinet heavier a...
by PRNDL
April 26th, 2008, 12:43 pm
Forum: Live Sound
Topic: Rack System Help Needed
Replies: 3
Views: 1170

Re: Rack System Help Needed

The central issue is that most processors, like your G-Force, don't have a built-in bypass switch, which is common in effects pedals. The easiest way is to program a clean patch on the G-Force that has no effects. This would be as close as you could get to bypassing the amp. The downside is you'd ha...
by PRNDL
April 10th, 2008, 7:37 am
Forum: Live Sound
Topic: Music Man amplifier
Replies: 4
Views: 2016

Re: Music Man amplifier

If this is a tube amp, most likely the electrolytics are failing and need to be replaced (it's called a "cap job"). Old Alnicos are highly desirable speakers. Modern speakers are designed to replicate their sound, and a few come close. I recommend bringing the amp to a reputable tube amp repairman f...
by PRNDL
March 21st, 2008, 10:52 am
Forum: Live Sound
Topic: Vintage Tube Amp Questions
Replies: 9
Views: 3317

Re: Vintage Tube Amp Questions

Sorry about all the misleading info ... sometimes I get "amp dyslexia" and confuse numbers.

Hyperborea is correct - you can use a standard tweed head cabinet, as long as it's the correct size.
by PRNDL
March 21st, 2008, 6:01 am
Forum: Live Sound
Topic: Vintage Tube Amp Questions
Replies: 9
Views: 3317

Re: Vintage Tube Amp Questions

It's a standard tweed chassis. http://www.harmonicamasterclass.com/GA40_-_back.jpg For two speakers, you can have someone build a 2x10 tweed cabinet, or you could add an external speaker cabinet. To match the impedance, the easiest is to parallel two speakers at double the impedance of the original ...
by PRNDL
March 20th, 2008, 7:13 am
Forum: Live Sound
Topic: Vintage Tube Amp Questions
Replies: 9
Views: 3317

Re: Vintage Tube Amp Questions

So I'd just plug a mini patch cord into say, the channel one mic input and the channel two instrument input (Where would the output from my guitar go)? Yes. Plug the guitar into channel two, which has three instrument inputs. I suppose if that worked, then I could simply vary the volume of each cha...
by PRNDL
March 19th, 2008, 4:52 am
Forum: Live Sound
Topic: Vintage Tube Amp Questions
Replies: 9
Views: 3317

Re: Vintage Tube Amp Questions

I fixed a Gibson GA-50T last Friday! It's a cool amp. The microphone input does have more gain that the instrument inputs in the Tremolo version, so it's not surprising they did the same with yours. A quick look at the schematics shows the instrument inputs have 47K into a .05µ and 100K to ground. ...
by PRNDL
March 13th, 2008, 7:35 am
Forum: Live Sound
Topic: chuga chuga growl.....
Replies: 4
Views: 1224

Re: chuga chuga growl.....

Listening is the best way to chose a tube guitar amp, so you're on the right track. Speaker selection is one of the easiest ways to improve tone. For better bass response, you can get a larger speaker (12" should be fine). Dynamics and high end response vary greatly between speakers, and depend on t...
by PRNDL
March 12th, 2008, 10:16 am
Forum: Swap Meet
Topic: low watt tube prototypes for sale 1W & 5W
Replies: 3
Views: 1651

low watt tube prototypes for sale 1W & 5W

I have two low watt prototypes for sale: - A 1 watt single-ended tweed mini-champ for 500 - A 5 watt push-pull black head for 400 Both use the 6AK6 output tubes and sound fantastic. Descriptions, photos and sound files are on these web pages. http://www.naturdoctor.com/Chapters/Amps/MiniChamp.html h...