#1
im thinking of changing out the speaker in my peavey valveking royal 8 amp, has anybody had any success in doing this? also i want to put a 12in speaker in the amp in place of the 8in speaker but the 12 doesnt fit right to be screwed down, any suggestions on how to make it fit and screw it down?
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#2
Build it into a new cab and just use it as an extension. You may have to modify the output from the amp, but it should be pretty easy.

DS
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#3
whats the point in putting a bigger speaker in it wont make it louder, and your have to saw it open to make it fit
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#4
im kinda confused as to the whole building it into a new cab and using it as an extension thing. can you explain what all that would entail?
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#5
Quote by ccatrackstar
im kinda confused as to the whole building it into a new cab and using it as an extension thing. can you explain what all that would entail?


Build a 1x12 cab,
Disconnect the 8" speaker from the VK,
Run the VK output to the 1x12.

Edit: I've thought about doing this with my VK. It's definitely powerful enough to drive a 12", and it would give some well-needed bottom end. The 8" speaker just doesn't cut it for me.
#6
Quote by rancidryan
whats the point in putting a bigger speaker in it wont make it louder, and your have to saw it open to make it fit
Fail.

I'd say there was an INCREDIBLY strong chance it would make it louder.
The Laney Thread are big and clever. No exceptions.
#7
Quote by MrCarrot
Fail.

I'd say there was an INCREDIBLY strong chance it would make it louder.



epic fail, it will still be the same wattage rms
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#8
Quote by rancidryan
epic fail, it will still be the same wattage rms
Super epic fail.

Watts =/= loudness.

Watts x efficiency = loudness.


In general, 12" speakers are more efficient than 8" speakers.
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#9
You'd have to go a long way to find a 12 that is less efficient or equally efficient to the 8" in the Royal 8 which is probably about 95dB, that's what the Valve Junior V2 Combo speaker is rated at according to Weber.
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#10
Quote by MrCarrot
Fail...
Quote by rancidryan
epic fail...
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Super epic fail...
I've lost track but someone has failed HORRIBLY.

I'd say running a 12 with the amp in question could only be a good thing. The low-end improvement alone should be enough, but I too believe it will get somewhat louder.
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#11
ok so i like the idea of making a 1x12 cab and running the output of my valveking into it, but im not 100% sure what the output actually is, are you just talking about the headphone output jack or is there another type of output that would work better?
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#12
Quote by ccatrackstar
ok so i like the idea of making a 1x12 cab and running the output of my valveking into it, but im not 100% sure what the output actually is, are you just talking about the headphone output jack or is there another type of output that would work better?


Basically, the wires that go to the current speaker. You take those off the 8", and put them onto the 12".
#13
oh ok sweet. i would have to buy some longer cable but i like the sound of that idea! thanks for all the help!
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#14
Quote by ccatrackstar
oh ok sweet. i would have to buy some longer cable but i like the sound of that idea! thanks for all the help!



Okay, the easiest thing to do is this:

1. Buy two mono jacks,
2. Drill a correctly-sized hole in the back of the amp casing,
3. Mount one mono jack there, and solder the positive to the tip, and negative to the sleeve.

-That will give you a speaker jack on the back of the amp.

4. Do the same on your 1x12" cab, so that you have a amp input jack mounted in the back,
5. Connect the two with a normal mono-mono guitar cable.
#15
ok so one more noob question whats the sleeve and the tip?
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#16
Quote by ccatrackstar
ok so one more noob question whats the sleeve and the tip?




The tip is the pokey bit at the end.

The sleeve is everything after the black plastic ring.

On a mono socket, the tip touches the bent piece of metal, and the sleeve makes contact with the socket sleeve:

#17
ok so pretty much i need to solder the yellow and blue wires that connect to my current speaker to the mono jack and then wire a 12in speaker inside the cab i build to another mono jack and connect them using a cable?
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#18
Quote by ccatrackstar
ok so pretty much i need to solder the yellow and blue wires that connect to my current speaker to the mono jack and then wire a 12in speaker inside the cab i build to another mono jack and connect them using a cable?


YES!
#19
Quote by rancidryan
epic fail, it will still be the same wattage rms

Super colossal mega godzilla fail. Sound is made by the movement of air. A 12" speaker is going to move much more air than an 8". This is why most cabinets are 4x12, instead of one high wattage speaker.
#20
ok awesome, as soon as exams are over its off to the hardware store for some supplies and wood, and im gonna build me a cab! thanks for all your help!
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#21
Don't forget pics and/or sound clips.
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#22
will do, ill prob start a new thread when the time comes to build it.
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