a) Using a higher wattage amp than the speakers rated wattage will fry the voice coil
b) Miscalculating speaker wattage ratings by mixing peak power, DIN power, music power etc. with an RMS rated amplifier. They are not the same scale!!!
c) Using an isolation cab with the amp cranked up will fry the speaker coil through lack of ventilation and overheating
d) Overdriving an amp by incorrect wiring of multiple speakers to a single amp output
SoundcoreRecords, you need to make sure that the speaker can breath, hence the design of Rivera's Silent Sister. Or at least have a cab that is large enough for the speaker to move air, if you are not going to vent it. If the design is too tight around the speaker, the speaker coil will over heat.
It looks very good to me. Dude can I ask a question, is there any way I can connect a marshall 1912 cab to a stereo Line 6 Spider IV 150 head. Line 6 say both 75W outputs need to be connected to 8ohm loads. Is there any way I can modify the Marshall to make it work with the Spider IV head? Thanks
I built one back in the 80s based on the one Alan Holdsworth had built for himself at the time. (He lived in an apartment then). I made a top lid for mine and had a baffle that could slide in and out allowing for a quick speaker change in case you wanted to use something else. Worked like a charm.
I build a isolation box..and put a greenback speaker in their..I ran my fender blues deville into the speaker and it blew within 20 minutes..any idea what went wrong?
@EJHDad if he wired it wrong and under impeded it than it would most likely fuck up his amp aswell, so it probably blew from over powering it or a wiring fault
@SoundcoreRecords as porbly replied to you. the green speaker was a lower wattage than the amps output... overloading the speaker + the Ohms. example 60watt amps use 100watt speakers. 100w 4x12 use 4 75w/100w speakers. to be safe always go up one level of wattage over the amps output or half on 4x12 cabs
@SoundcoreRecords more important than the whattage, is the impedance mate, if your amp head requires an 8ohm speaker, then put in an 8ohm, if you under ohm it, you will damage the speaker very easily and more than likely damage your amp due to overheation. hope this helped mate
@SoundcoreRecords How did the speaker break? Did the voicecoil loosen from the cone? (You would hear a scratchy noise when pressing the speaker) or did the cone break? If one of these two is the case its probably because the air pressure in the box gets too high. When the box is small and closed on both sides of the speaker, a relatively high pressure occurs in the box.
Hey man, greenback speakers are only rated 25w. A blues deville is 65w and can often go higher than that due to tube power. You are putting over 2x the rated wattage through the greenback and poof!
Totally agree dude. couple that with a cranked up amp into an isolation box with no ventilation and that greenback sucker ain't gonna last - even if the power ratings/impedances etc. were matched.
If you are going to put a speaker in an isolation box, always over-rate the speaker by 2x or under-rate the amp by 2x. minimum i.e. 50W rms speaker with a 25w rms amp. Never the other way round!
Hey! Thanks! No endorsements to speak of, but we haven't had any complaints yet, thanksfully! *crosses fingers* We can do just about anything you want. $239.99 for head $239.99 for an unloaded cab or $419.99 for the combo plus whatever speaker you want if any. More info on our website under the "order" section. murphycabs . com
this is a very good make, and you added space , instead of what others are doing and seriously close micing, but not giving enough air for the waves to come out. have you tried double micing it yet? would sound amazing!
what kind of isolation material you have in the back of the cab??? you have the isolation material in all the back of the cab??? sorry for my little english
Any chance you could give us a sample from the outside of the cab just to get an idea of how well it dampens the sound? It's cool. I was thinking of building one but my idea is a bit more convoluted.
It is essentially an enclosed box with a speaker and mic inside. It is used for tube amps in the recording studio(Basement). You can run your tube amps loud without waking the kids. Make sense? You can use mine live, just open the door.
Sweet dude, I made one similar to that. Next time you buy a vintage 30, search the net and don't get it from MF. You can probably find a brand new one for about 90 bucks. 130 is a bit high.
Awesome! I'm going to possibly build one of my own. I live an a apartment and have some amps that I can't even use. How much noise actually comes out of the cab?
Top causes for blowing a speaker:
a) Using a higher wattage amp than the speakers rated wattage will fry the voice coil
b) Miscalculating speaker wattage ratings by mixing peak power, DIN power, music power etc. with an RMS rated amplifier. They are not the same scale!!!
c) Using an isolation cab with the amp cranked up will fry the speaker coil through lack of ventilation and overheating
d) Overdriving an amp by incorrect wiring of multiple speakers to a single amp output
uberteknik 1 year ago
Thats a great build..
good job man!
Post some recordings dude :o)
TrevorDavies1 1 year ago
Looks pretty good man. Can I ask where you got the XLR and 1/4 plates? Would you mind linking me? Thanks a lot buddy
VxTLoyal 1 year ago
SoundcoreRecords, you need to make sure that the speaker can breath, hence the design of Rivera's Silent Sister. Or at least have a cab that is large enough for the speaker to move air, if you are not going to vent it. If the design is too tight around the speaker, the speaker coil will over heat.
74LesPaul 1 year ago
It looks very good to me. Dude can I ask a question, is there any way I can connect a marshall 1912 cab to a stereo Line 6 Spider IV 150 head. Line 6 say both 75W outputs need to be connected to 8ohm loads. Is there any way I can modify the Marshall to make it work with the Spider IV head? Thanks
Hertsman50 1 year ago
I built one back in the 80s based on the one Alan Holdsworth had built for himself at the time. (He lived in an apartment then). I made a top lid for mine and had a baffle that could slide in and out allowing for a quick speaker change in case you wanted to use something else. Worked like a charm.
gmdinformation 1 year ago
Where did you get the foam?
mogwix 1 year ago
"Where did you get the foam?"
I just used some old carpet. Works just as well.
gmdinformation 1 year ago
wow, thats really great man, DIY all the way !
frostybob123 2 years ago
Dude. Like it.
Was there a sample of the sound of this creation? I'd love to hear how that thing sounds?
FM
digitalfid 2 years ago
dude that's fresh...
ConstantinetheEmcee 2 years ago
I build a isolation box..and put a greenback speaker in their..I ran my fender blues deville into the speaker and it blew within 20 minutes..any idea what went wrong?
SoundcoreRecords 2 years ago
Not sure. You have to make sure that the ohm's match and that you are not over powering the speaker from the deville. Hope that helps.
EJHDad 2 years ago
@EJHDad if he wired it wrong and under impeded it than it would most likely fuck up his amp aswell, so it probably blew from over powering it or a wiring fault
andr123w 1 year ago
speaker may have been rated at lower wattage handling than the amp
yeah the amp is 60 watts and the speaker is rated for 25... thats why there are normally 4 speakers
topperspoppers 2 years ago
@SoundcoreRecords as porbly replied to you. the green speaker was a lower wattage than the amps output... overloading the speaker + the Ohms. example 60watt amps use 100watt speakers. 100w 4x12 use 4 75w/100w speakers. to be safe always go up one level of wattage over the amps output or half on 4x12 cabs
MrGrumpyGinger 2 years ago
ohhh ok. thanks guys...so basically i should just get a 100w speaker to be safe..?
SoundcoreRecords 2 years ago
@SoundcoreRecords more important than the whattage, is the impedance mate, if your amp head requires an 8ohm speaker, then put in an 8ohm, if you under ohm it, you will damage the speaker very easily and more than likely damage your amp due to overheation. hope this helped mate
gamerdude1989 1 year ago
@SoundcoreRecords How did the speaker break? Did the voicecoil loosen from the cone? (You would hear a scratchy noise when pressing the speaker) or did the cone break? If one of these two is the case its probably because the air pressure in the box gets too high. When the box is small and closed on both sides of the speaker, a relatively high pressure occurs in the box.
MrFilosoffen 1 year ago
@SoundcoreRecords
Yeah, you ran a Blues Deville into a Greenback...
baytamusic 1 year ago
@SoundcoreRecords You ran a 60 watt amp into a 25 watt speaker. You probably fried the speaker which , in turn, fried your output tranny...
mikiwantsholli 1 year ago
@SoundcoreRecords
Hey man, greenback speakers are only rated 25w. A blues deville is 65w and can often go higher than that due to tube power. You are putting over 2x the rated wattage through the greenback and poof!
otasty 1 year ago
@otasty
Totally agree dude. couple that with a cranked up amp into an isolation box with no ventilation and that greenback sucker ain't gonna last - even if the power ratings/impedances etc. were matched.
If you are going to put a speaker in an isolation box, always over-rate the speaker by 2x or under-rate the amp by 2x. minimum i.e. 50W rms speaker with a 25w rms amp. Never the other way round!
uberteknik 1 year ago
That's awesome!
murphycabs . com
murphyvanhoy 2 years ago
Not as awesome as your cabs! Those are beautiful. Give me some prices. I'd be interested...Endorsements? Lemme know Murph!
EJHDad 2 years ago
Hey! Thanks! No endorsements to speak of, but we haven't had any complaints yet, thanksfully! *crosses fingers* We can do just about anything you want. $239.99 for head $239.99 for an unloaded cab or $419.99 for the combo plus whatever speaker you want if any. More info on our website under the "order" section. murphycabs . com
Thanks again for looking!
murphyvanhoy 2 years ago
Great build! Be sure to post sound clips of the double micing too.
Hopper125 2 years ago
Will do!
EJHDad 2 years ago
don't you need ventilation, tho?
keeelane 2 years ago
A small port. Very small. I dont think it is needed though.
EJHDad 2 years ago
this is a very good make, and you added space , instead of what others are doing and seriously close micing, but not giving enough air for the waves to come out. have you tried double micing it yet? would sound amazing!
SGwizard1 2 years ago
Good idea! Double mic. I will try that.
EJHDad 2 years ago
awesome! when i mic up i use the sm57 and an akg c414, but whatever your going for really :D
SGwizard1 2 years ago
Hi there good work. What type of microphone are you using this cab?
djsweetthing 2 years ago
Shure SM-57. Thanks!
EJHDad 2 years ago
Thanks for the reply, I've been wanting to make one of these boxes for years.
djsweetthing 2 years ago
hi, great work, i have and handmade
guitar isobox too...
what kind of isolation material you have in the back of the cab??? you have the isolation material in all the back of the cab??? sorry for my little english
bye
enrico1975ps 2 years ago
Sweet but thats K-mart mattress foam
Gtrplyr1 2 years ago
Any chance you could give us a sample from the outside of the cab just to get an idea of how well it dampens the sound? It's cool. I was thinking of building one but my idea is a bit more convoluted.
hueseph 2 years ago
I'm confused, what is the purpose of an Isolation Cab? Like, is it any different from a regular Cab?
Dimefan91 2 years ago
It is essentially an enclosed box with a speaker and mic inside. It is used for tube amps in the recording studio(Basement). You can run your tube amps loud without waking the kids. Make sense? You can use mine live, just open the door.
EJHDad 2 years ago
ifs for recording...."isolating the sound"
d3tach3d 2 years ago
where did u buy the 1/4" input panel?
Droodely 2 years ago
Ebay or Musicians Friend. The are everywhere on the internet.
EJHDad 2 years ago
What padding are you using?
cmorrow132 2 years ago
Just standard egg crate foam. foam by mail . com is a good resource. Thanks!
EJHDad 2 years ago
How many watts is it?
GuitarraChica 2 years ago
Comment removed
beejay1980 2 years ago
Sweet dude, I made one similar to that. Next time you buy a vintage 30, search the net and don't get it from MF. You can probably find a brand new one for about 90 bucks. 130 is a bit high.
RjRocker87 2 years ago
Yeah, you are right. Oh well ya live and you learn. Thanks for checking it out. I would love to hear your iso box. Thanks!
EJHDad 2 years ago
You have done a great job.
not to mention the money saved for anything close to equivilent in quality.
danocean111213 3 years ago
Thanks! I am all about saving money in our current economic situation...take care.
EJHDad 2 years ago
your pretty good with that stuff.
i wonder if you know how to fix guitars .
CJ101nicKA 3 years ago
What are the dimensions on it?
kagvfiau 3 years ago
Awesome! I'm going to possibly build one of my own. I live an a apartment and have some amps that I can't even use. How much noise actually comes out of the cab?
Thanks,
Matt
mspears6991 3 years ago
No very much. I have it in a closet and you can't even tell it it there under the studio monitors. It has really been great!
EJHDad 3 years ago
What are the dimensions on it?
mspears6991 3 years ago
Would a big old freezer work?
aromicdevil 3 years ago
It could. All you would have to do is treat the walls so they weren't so reflective. Give it a shot!
EJHDad 3 years ago
Thanks, I will as soon as I get my hands on a 2x12. It's big but not quite big enough for a 4x12. Take care good demo.
aromicdevil 3 years ago
Do you think I'd be okay using a 15" speaker?
JRSTAR666 3 years ago
Oh yeah. Just make the box bigger to suit the larger speaker...
EJHDad 3 years ago
Hey Looks good man! Thanks for the comment and e-mail!
grendelsound 4 years ago
Nice...that pedalboard of yours in the background brings back memories of rockin' countless gigs. FretBuster.
bluepowder777 4 years ago
Awesome man, can't wait to hear it!
66pbass 4 years ago
Ok...I can't spell..... Casket making! Or coffins....which ever you prefer.
MTJTATAT 4 years ago
Thats pretty cool. You should go into caket making.
MTJTATAT 4 years ago