I have a cute little 25 watt amp that looks like it was designed in the early 70s ("all transistor!!"), nice aqua/silver speaker cloth over a 10" speaker. I want to set it up so that someone could plug an iPod in and sing along, or sing and play guitar.

The amp has 3- 1/4" phono input jacks, one off/on/volume and one tone control.

I would like to reconfigure it just slightly by changing one of the input jacks to a 1/8" mini phono, which I don't believe presents any problems, and by changing one of the other two to an XLR (microphone) input.

Will this work? Can I just swap it out? I don't know much about electronics. I have heard the term "phantom power" in re: microphones, but I don't really know what it means or how it works. Does a microphone like a Shure SM58 have enough output?

If changing a 1/4" phono input jack to an XLR input jack is NOT a simple one for one, then is there something else that could be done to make it work?


THanks!


Views: 127

Replies to This Discussion

I'm sure you can buy an adapter to go from ¼" to XLR. As a matter of fact now that I'm thinking about it here's a link to Musicians Friend where you can get one.

http://accessories.musiciansfriend.com/product/Planet-Waves-XLR14-A...
A Shure SM58 doesn't need to be phantom powered. Also, this site might be helpful: http://www.mediacollege.com/audio/connection/xlr-jack-mono.html
By the way, phantom power is only needed for condenser microphones, which contain active circuitry. Electricity is fed through the mic to power the circuit. Since a Shure SM58 is a dynamic, you have absolutely nothing to worry about.

Sander said:
A Shure SM58 doesn't need to be phantom powered. Also, this site might be helpful: http://www.mediacollege.com/audio/connection/xlr-jack-mono.html
Thanks, all. I have one of those adapters--for some reason it works in my other amps but not this particular little odd-ball. A big part of my question had to do with... I just want to try it, you know, fun with solder!

RSS

The Essential Pages

New to Cigar Box Nation? How to Play Cigar Box GuitarsFree Plans & How to Build Cigar Box GuitarsCigar Box Guitar Building Basics

Site Sponsor

Recommended Links & Resources


Discussion Forum

Ruby Amp

Started by BrianQ.. Last reply by BrianQ. May 18, 2020. 6 Replies

Smokin' amp (literally)

Started by James Conder. Last reply by James Conder Aug 27, 2019. 4 Replies

Simple Headphone/Practice Amp

Started by BrianQ. May 16, 2019. 0 Replies

Problem with second-hand amp.

Started by Arthur Payne Mar 31, 2019. 0 Replies

Artec Amp Help!

Started by Jesse Lively Sep 10, 2017. 0 Replies

LM386 N-4

Started by Denis U. Last reply by Richard Haas Dec 3, 2016. 4 Replies

History Mystery--Orrtronic Tube Amplifier project

Started by Scott aka Farmer Ted Nov 17, 2016. 0 Replies

Dual IM386 Chip amp

Started by Paul Craig. Last reply by Paul Craig Nov 3, 2016. 31 Replies

Amp Speakers

Started by Primitive Acoustics. Last reply by Primitive Acoustics Mar 9, 2016. 3 Replies

Grounding for Cigar Box Amps: Chassis Ground?

Started by Erik Bell. Last reply by Scott aka Farmer Ted Dec 20, 2015. 4 Replies

Neat amp components

Started by Surly. Last reply by Alan Steeg Oct 27, 2015. 1 Reply

can a dab radio be turned into an amp

Started by Coventry Halfpenny guitars. Last reply by Pickedmoor Jon Oct 20, 2015. 3 Replies

SDA-T Questions

Started by alectron. Last reply by Zac Ray Sep 2, 2015. 10 Replies

HI - New guy & And speaker question

Started by Henry S. Last reply by Henry S Mar 25, 2015. 4 Replies

Are Pre-fabbed LM386 Moduals Worth Trying?

Started by Scott W. Last reply by Henry S Mar 24, 2015. 6 Replies

Powered sub to amp ??

Started by wormil. Last reply by wormil Sep 2, 2014. 2 Replies

Amp and speaker INSIDE the guitar?

Started by Greg Potts. Last reply by Ron "Oily" Sprague Jul 1, 2014. 1 Reply

trying to hack an old valve radio, into a guitar amp,

Started by GARAGE HERMIT. Last reply by GARAGE HERMIT Apr 29, 2014. 108 Replies

Best mini amp KITS

Started by MichaelS Country Boy Guitars. Last reply by Henrik Johansson Mar 10, 2014. 34 Replies

amp wiring help

Started by HarleyTodd. Last reply by Bernie Mango Feb 26, 2014. 18 Replies

Blog Posts

A Tribute

Posted by Ghostbuttons on January 15, 2023 at 12:00pm 1 Comment

Let’s talk Aeolian…

Posted by BrianQ. on August 26, 2022 at 5:05pm 0 Comments

Latest Activity

Poorness Studios liked Doug Thorsvik's video
37 minutes ago
A.D.EKER commented on A.D.EKER's video
43 minutes ago
A.D.EKER posted a video

FORD Hubcap slide BCB 2023

Having some video fun !picking the BCB Ford HubCap rezzo, juicing upwhit some video Art, just so your eyes and ears get all the input they Need /can handle...
46 minutes ago
Randy S. Bretz and Anthony adams are now friends
1 hour ago
Jim Booth replied to Jim Booth's discussion Guitar Rack
"Found it. Thanks!"
1 hour ago
Scott Schoepf liked Poorness Studios's photo
2 hours ago
Fergus Lester liked RON NORTHCUTT's photo
7 hours ago
Fergus Lester commented on Fergus Lester's photo
Thumbnail

Non CBG

"Yes this guitar sounds great with it. I'll share some videos later"
7 hours ago
BrianQ. left a comment for Anthony adams
9 hours ago
BrianQ. replied to Jim Booth's discussion Guitar Rack
"I think I remember it was called the “lean back cbg guitar rack” by Janis Wilson Hughes…"
9 hours ago
Doug Thorsvik commented on RON NORTHCUTT's photo
Thumbnail

newstrummer finished 1

"I’m definitely a fan of less is more Ron! Cool build."
13 hours ago
Brian Halstead updated their profile
14 hours ago

Music

© 2023   Created by Ben "C. B. Gitty" Baker.   Powered by

Badges  |  Report an Issue  |  Terms of Service

\uastyle>\ud/** Scrollup **/\ud.scrollup {\ud background: url("https://storage.ning.com/topology/rest/1.0/file/get/963882636?profile=original") no-repeat scroll 0 0 transparent;\ud bottom: 25px;\ud display: inline !important;\ud height: 40px;\ud opacity: 0.3 !important;\ud position: fixed;\ud right: 30px;\ud text-indent: -9999px;\ud width: 40px;\ud z-index: 999;\ud}\ud.scrollup:hover {\ud opacity:0.99!important;\ud}\ud \uascript type="text/javascript">\ud x$(document).ready(function(){\ud x$(window).scroll(function(){\ud if (x$(this).scrollTop() > 100) {\ud x$('.scrollup').fadeIn();\ud } else {\ud x$('.scrollup').fadeOut();\ud }\ud });\ud x$('.scrollup').click(function(){\ud x$("html, body").animate({ scrollTop: 0 }, 600);\ud return false;\ud });\ud });\ud \ua!-- End Scroll Up -->