tele63 Posted August 7, 2008 Share Posted August 7, 2008 I've got a stone stock VJR head and cab and my question is how would a 4 or 8ohm replacement speaker affect the amps efficiency? Any and all help is appreciated. Thanks Link to comment Share on other sites More sharing options...
layboomo Posted August 7, 2008 Share Posted August 7, 2008 I've got a stone stock VJR head and cab and my question is how would a 4 or 8ohm replacement speaker affect the amps efficiency? Any and all help is appreciated. Thanks In laymans terms: http://www.hometoys.com/htinews/feb04/articles/polk/impedence.htm Link to comment Share on other sites More sharing options...
tele63 Posted August 7, 2008 Author Share Posted August 7, 2008 Man, I can't thank you enough. That cleared up everything. Thanks again. Link to comment Share on other sites More sharing options...
ricach Posted August 7, 2008 Share Posted August 7, 2008 I didn't read the article but forgive me if this was emphasized ...... tube amps you MUST use the correct ohmage for long output transformer life and maximum power transfer. solid state amps are way more adaptable to various ohms. Link to comment Share on other sites More sharing options...
Steven Lister Posted August 8, 2008 Share Posted August 8, 2008 ... my question is how would a 4 or 8ohm replacement speaker affect the amps efficiency? Amp efficiency and end-product (speaker tone) --- are they equal? Maybe so. Amp/speaker tone is what we're all really trying to maximize' date=' right? It seems counter intuitive but low watt tube amps sound better running higher ohm speakers..., and more so when you are playing at higher db levels --- every rock guitarist's nirvana level. Result = at 5 watts VJr. performs best, sonically, running a 16 ohm speaker(s) load. My experiments with 4, 8 & 16 ohm loads matched to VJr. outputs (using same speakers wired differently) have confirmed this to my ears (and a few friends). Web articles discuss why. Here is one of interest: http://www.zeroimpedance.com/faq.html#2) [i']Ignore the product sales pitch and look at #16 - 17.[/i] So maybe, just maybe, ol' Epiphone did know a thing or two after all and that why EPI used a 16 ohm speaker in the matching VJr. cab. ...tele63 --- WELCOME to the forum! Hit every BLUE NOTE baaaby..., I'm going to play on:-" Link to comment Share on other sites More sharing options...
tele63 Posted August 8, 2008 Author Share Posted August 8, 2008 WOW! I can't thank you guys enough for sharing your info. You've answered everything and more. Thanks again! Link to comment Share on other sites More sharing options...
mrjones200x Posted August 8, 2008 Share Posted August 8, 2008 The stock epi 8" speaker sounds better than my 10" 8ohms one in my vox! I thought it would be better just because its bigger! So i was wrong! Link to comment Share on other sites More sharing options...
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