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Musicman 115 RH speaker replacement

#23
The 3015 is your best choice. As a factory option there was an EV 15 available for that cab. I think it was the EV 15b though I reserve the right to be wrong ;-). The 3015 is a reasonable facsimile thereof... You will probably want to add some stuffing in the main chamber, behind the woofer and not blocking the entrance to the port.that will richen things up. You lose some sensitivity but you get deep... That is a very mid forward cab so a good trade off IMO...
 
#25
I had one and the original speaker was, in fact a EVM15, not sure about B or L, it wasn't marked on the speaker.
The Emiinence suggestions above would give you a more modern, higher power handling option. I currently have the 12" version of the Basslite you mentioned and like them very much, but I have a pair of them which gives me better power handling than just a single one.
 

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#26
@MIMike... I've got a 212 RH cab too. How do you like the Basslites compared to the stock speakers? More or less lows, mids, highs? Any problems with the box tuning vs the TS parameters of the speakers? And is there a noticeable difference in the weight of the cab? The power handling difference is obviously a benefit. Thanks! Sorry for the derail OP.
 
#27
Do you have the bass lites in the Fender cab in your picture? If so, how does it sound? I may have access to that same cab & have been longing for a 2x12 for a long time but have been hesitant about that cab because I see it as more of a guitar cab.
 
#33
Ok, so I was really looking to load this cab with a 4 ohm neo & was pretty much certain the kappalite 3015 was the one...but...Isn't offered in a 4 ohm version so I'm oen to more suggestions. I'm also open to traditional (non- neo) speakers. I ultimately want this cab to be 4 ohm mainly for use with my acoustic 370 but also to be used with my GK mb500 & Mesa mpulse 360, both of which prefer a 4 ohm load.
 
#34
The MB500 with a 4 ohm load single speaker cab will be a tall order. Expect to pay well north of $500 for a 15" that can handle that power level. Take it from someone who has been at this a very long time, chasing a single speaker 4 ohm cab is a wasted effort. Watts from an amplifier don't make sound, speakers do. The problem is it takes a huge amount of watts into a speaker to notice a change in volume as most of the wattage after a lower power input point makes much more waste heat than sound.
 
#36
My recommendation is to stop trying to chase every watt from an amp :). You might feel good about the numbers, but we play music ;).

If you can't get loud enough with a single 8 ohm cab with the MB500 (350 watts @ 8 ohms), another 150 watts by running the same single cab @ 4 ohms will not get you there! Twice as loud will need 3500 watts, any real detectable difference will need 700 watts. Not many single speaker cabs will survive a 700 watt rms amp driven hard (900 to 1400 watts at high distortion).
 
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#37
But isn't it also potentially dangerous to constantly under drive a speaker? In other words, if the mb500 delivers 350 watts @ 8 ohms & the kappalite 3015 is a 450 watt 8 ohm speaker, don't I run the risk to destroying the speaker by constantly under powering it? On the flip side if it's the same wattage handling @ 4 ohms, the mb500 & my Mesa 360 & my acoustic 370 can all reasonably deliver an acceptable volume of power @ 4 ohms, or am I mistaken in my understanding of things?
 
#38
jwinton said:
But isn't it also potentially dangerous to constantly under drive a speaker? In other words, if the mb500 delivers 350 watts @ 8 ohms & the kappalite 3015 is a 450 watt 8 ohm speaker, don't I run the risk to destroying the speaker by constantly under powering it? On the flip side if it's the same wattage handling @ 4 ohms, the mb500 & my Mesa 360 & my acoustic 370 can all reasonably deliver an acceptable volume of power @ 4 ohms, or am I mistaken in my understanding of things?
Click to expand...


no.

yes.
 
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#39
jwinton said:
But isn't it also potentially dangerous to constantly under drive a speaker? In other words, if the mb500 delivers 350 watts @ 8 ohms & the kappalite 3015 is a 450 watt 8 ohm speaker, don't I run the risk to destroying the speaker by constantly under powering it? On the flip side if it's the same wattage handling @ 4 ohms, the mb500 & my Mesa 360 & my acoustic 370 can all reasonably deliver an acceptable volume of power @ 4 ohms, or am I mistaken in my understanding of things?
Click to expand...

Does the speaker blow up when you are not playing it? NO.
There is no such thing as "under powering" a speaker. If you drive a 350 (clean power rating) watt amp too hard (because you don't have enough speaker area for the job) the amp puts out much more than 350 watts (with high distortion). In this case, OVER powering a 450 watt speaker with an amp being forced to produce 600 watts will damage the speaker.

Read the attached file from JBL.
 

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