citadelmusic Posted August 31, 2005 Report Share Posted August 31, 2005 This is my first posting so be gentle. I run my guitar through a sansamp into a keyboard amp (1oo watt 4 ohm one 15"/ two tweeters). I have two questions. 1. I replaced my 15 w/ an evm15L @ 8 ohms. Do I have to put a paralleled resistor on it (to match ohmage) or will it run ok w/out? 2. I would like to place a volume pot after the crossover (a cap) to control both tweeters (8 ohms each run in series). I understand I need something called an L-pad but do I need a 16 ohm L-pad (to match ohmage of two series 8s) or can I use an 8? And if I do need 16 where can I get one. Quote Link to comment Share on other sites More sharing options...
lovekraft Posted September 1, 2005 Report Share Posted September 1, 2005 1. No, you're just going to lose some output (provided both speakers are similarly efficient). Putting a resistor in series is only going to make heat, and it's unlikely that any solid state amp is going to object to an 8ohm load. For future reference, replacing any speaker in a system with a passive crossover with a nisnatched impedance means the crossover frequencies are not going to be what you expect, either - it's always best to match impedances in a multi-driver system. 2. Match the pad to the load - if the tweeters are 8 ohms total then use an 8 ohm pad. HTH Quote Link to comment Share on other sites More sharing options...
citadelmusic Posted September 8, 2005 Author Report Share Posted September 8, 2005 1. No, you're just going to lose some output (provided both speakers are similarly efficient). Putting a resistor in series is only going to make heat, and it's unlikely that any solid state amp is going to object to an 8ohm load. For future reference, replacing any speaker in a system with a passive crossover with a nisnatched impedance means the crossover frequencies are not going to be what you expect, either - it's always best to match impedances in a multi-driver system. 2. Match the pad to the load - if the tweeters are 8 ohms total then use an 8 ohm pad. HTH ← Thanks for the prompt reply. I understand you've also helped unclej w/ my issue. On the subject of the L-pad; the tweeters are wired in series and they are each 8 ohms, does this not double the ohmage to 16 and if so do I need a 16 ohm L-pad? Thanks again Quote Link to comment Share on other sites More sharing options...
lovekraft Posted September 8, 2005 Report Share Posted September 8, 2005 Yes, two 8ohm drivers in series make a 16ohm load, so you'll need a 16ohm pad. Quote Link to comment Share on other sites More sharing options...
citadelmusic Posted September 14, 2005 Author Report Share Posted September 14, 2005 Do you hear that unclej!!! Get the heck crackin' on my 16 ohm L-pad. No matter what the cost ........be it 2, 4, even 10 dollars. Money is no option. P.S. Thanks for all you guys' help on this issue. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.