Surprise in a new (to me) extension cab

[Swampy]

A pawn shop had this Carvin V115 bass cab for $69, I got it for $55 OTD. I was wanting it to add a little bottom end to my guitar rig. I don't know what guitar speaker I want to go with yet, but when I opened it I saw it didn't have a Carvin speaker in it at all. Instead, it had this Peavey Black Widow. I may ask this in the bassment section, but there's a lot more traffic here.......would playing guitar thru this speaker damage anything?

 

[ehdwuld]

Re: Surprise in a new (to me) extension cab

my buddy plays his Twin thru his SP2's
and his Black widow loaded ampeg cab

it sounds much thicker than the 12 inch Eminence Legends in the Twin

if you wish to move the Black widow, I am positive he would be interested

 

[IM4Tone]

Re: Surprise in a new (to me) extension cab

Make sure that the total resultant impedance of your speakers matches that of your amp's OT and there'll be no harm. whether or not it'll sound good is another question to be answered by your ears.

 

[GilmourD]

Re: Surprise in a new (to me) extension cab

As long as your impedance is set correctly the only thing you may damage is your relationship with your neighbors and possibly their windows.

 

[DankStar]

Re: Surprise in a new (to me) extension cab

Dang, great price on that cab. I'm making a kickback bass/guitar cab for a 1 x 10 and getting bummed at the time it's taking me to plan it out and the cost of the tools I needed to get (however, yours is much bigger than I'd prefer). In short, $55 is nothing compared to buying wood, a speaker, covering, tools, hardware, etc. I have to be up to $70 or $80 at this point (granted I can use the tools for other stuff).

 

[Swampy]

Re: Surprise in a new (to me) extension cab

Yeah, I've made a few cabs, I'm a contractor so I have the tools, but I couldn't pass on this cab. I plugged my Mesa 5:25 into it last night and it was a bit muddy/flubby. I haven't tried my OR-15 through it yet. I'm on the lookout for a Emi Big Ben or an older Jensen. Would like to do an even trade if anyone has something.

 

[IM4Tone]

Re: Surprise in a new (to me) extension cab

I expected the mud, but the cab is probably worth the price.

 

[GilmourD]

Re: Surprise in a new (to me) extension cab

Yeah, I've made a few cabs, I'm a contractor so I have the tools, but I couldn't pass on this cab. I plugged my Mesa 5:25 into it last night and it was a bit muddy/flubby. I haven't tried my OR-15 through it yet. I'm on the lookout for a Emi Big Ben or an older Jensen. Would like to do an even trade if anyone has something.

Combine it with a cab with smaller speakers and you'll probably be surprised. I don't think a 15 by itself works well for guitar very often (although it has in a few cases).

 

[Swampy]

Re: Surprise in a new (to me) extension cab

I was thinking of running it out of my Orange's 8ohm, and my 16ohm Emi Legend out of the 16ohm out. Is that do-able without messing up the head?

 

[Swampy]

Re: Surprise in a new (to me) extension cab

It doesn't appear that'll work. Using the 8ohm and 16ohm outs at the same time.

 

[GilmourD]

Re: Surprise in a new (to me) extension cab

I was thinking of running it out of my Orange's 8ohm, and my 16ohm Emi Legend out of the 16ohm out. Is that do-able without messing up the head?

That's not quite going to work that way. You really should only run speakers out of one output.

Does either cabinet have a daisychain output? Usually those are in parallel, so you'd end up netting yourself 5.3 ohms (EDIT: not the 12ohms I originally posted because my brain wasn't in my head) between the two cabs, which realistically wouldn't kill the amp if you ran it from the the 8ohm tap.

 

[Swampy]

Re: Surprise in a new (to me) extension cab

Here's the backs of the amps and cab.

 

[IM4Tone]

Re: Surprise in a new (to me) extension cab

That's not quite going to work that way. You really should only run speakers out of one output.

Does either cabinet have a daisychain output? Usually those are in parallel, so you'd end up netting yourself 12ohms between the two cabs, which realistically wouldn't kill the amp if you ran it from the the 8ohm tap.

Parallel connection of an 8 and 16 ohm speaker yields 5.3 ohms NOT 12. Running 5.3 out of a 4 ohm jack should not overstress the OT. However, it's likely that the volumes to the two will be very imbalanced. Probably won't like it, but it shouldn't be harmful.

EDIT: connecting to an 8 ohm jack on the amp should also be OK with a 5.3 ohm load.

 

[GilmourD]

Re: Surprise in a new (to me) extension cab

Parallel connection of an 8 and 16 ohm speaker yields 5.3 ohms NOT 12. Running 5.3 out of a 4 ohm jack should not overstress the OT. However, it's likely that the volumes to the two will be very imbalanced. Probably won't like it, but it shouldn't be harmful.

EDIT: connecting to an 8 ohm jack on the amp should also be OK with a 5.3 ohm load.

Oh, jeez... You're right. I don't know what I was thinking.

Sent from my XT1096 using Tapatalk

 

[Securb]

Re: Surprise in a new (to me) extension cab

A pawn shop had this Carvin V115 bass cab for $69, I got it for $55 OTD. I was wanting it to add a little bottom end to my guitar rig. I don't know what guitar speaker I want to go with yet, but when I opened it I saw it didn't have a Carvin speaker in it at all. Instead, it had this Peavey Black Widow.

I am doing a 2x15 cab for my guitar. Celestion just came out with a G15V-100 Fullback I haven't heard them yet but I have heard good things. THe 8 ohm is on the street already the 16 ohm hits the street in a couple of weeks.

 

[Swampy]

Re: Surprise in a new (to me) extension cab

I'll look into those Celestions. Thanks!

 

[Securb]

Re: Surprise in a new (to me) extension cab

 

[Myaccount876]

Re: Surprise in a new (to me) extension cab

EDIT: connecting to an 8 ohm jack on the amp should also be OK with a 5.3 ohm load.

No it is not. That is how you wreck the output transformer. You can run 4 ohms out of the amp into a cabinet with a higher impedance, like 8 ohms (it'll just be less efficient). You cannot run an amp out to a lower impedance cabinet.

 

[IM4Tone]

Re: Surprise in a new (to me) extension cab

No it is not. That is how you wreck the output transformer. You can run 4 ohms out of the amp into a cabinet with a higher impedance, like 8 ohms (it'll just be less efficient). You cannot run an amp out to a lower impedance cabinet.

You are misinformed relative to this minor mismatch. And, in fact, for tube amps, running a lesser impedance load of one step (4 ohm spkr from an 8 ohm OT) is safer than running an impedance of one step higher (16 ohm spkr from the 8 ohm OT). For SS amps, the reverse is true.

 

[Myaccount876]

Re: Surprise in a new (to me) extension cab

You are misinformed relative to this minor mismatch. And, in fact, for tube amps, running a lesser impedance load of one step (4 ohm spkr from an 8 ohm OT) is safer than running an impedance of one step higher (16 ohm spkr from the 8 ohm OT). For SS amps, the reverse is true.

http://mesaboogie.com/media/Amplitudes/2013/June/Speaker Impedance Matching and Hookup.pdf

I wonder why you don't see any recommendations to run your amp into a lower impedance cabinet...But WTH does Mesa know?

Try running your 8 ohm OT to a 4 ohm load for a period of time and tell us how that goes.