question about speaker ohms!?!?!?!?

tarddoggy · 02-29-2008, 04:27 PM

hey there my fellow tone gurus,I have a situation here with a student:his parents bought him a Blackheart head for his Bday,his 4x12 is a Traynor.The dilema is this.....I dont have too much experience with all this new equip,as ya'll know Im a plug and play guy,but,this head has 2-4ohm jacks,2-8ohm and 1-16 ohm.The cab has 1-4ohm,2-8ohm and 1-16 ohm and a !selector!switch for mono(260 watts) and stereo(130 watts),any help as to what goes where!!!! The last head and cab I had was a old tuck'n'roll Kustom 200(solid state) in '79 and I really dont recall any selector switches!!!! THANKS IN ADVANCE!!!!! yes,Im gonna do my homework,BUT,in the meantime......

greenalbatross · 02-29-2008, 06:34 PM

Plug the 16ohm speaker out from the head to the 16 ohm input on the cab. Switch on mono. Everything else would be for running multiple speaker cabs or running two heads into a single cab(the stereo switch and 2 8 ohm inputs on the cab).

tarddoggy · 03-01-2008, 11:51 AM

Quote:

Originally Posted by greenalbatross

Plug the 16ohm speaker out from the head to the 16 ohm input on the cab. Switch on mono. Everything else would be for running multiple speaker cabs or running two heads into a single cab(the stereo switch and 2 8 ohm inputs on the cab).

Thanks brother!! hey guys,ya'll gotta try these buggers out
Blackheart™ - Lab Studies :: Case # BH5H
these things have some serious potential!!!

joegeek · 03-01-2008, 03:11 PM

Another impedance question:

I have a crate V8 amp that has a 4 ohm speaker, there are only 2 speaker leads on the transformer. Can I connect an 8 ohm speaker with out damaging the amp? I'm thinking that a higher # is ok just not a lower one.
Any suggestions? (other than getting rid of the cheesy amp)

Bowhunterwt · 03-01-2008, 08:20 PM

Why not put two 8 ohm speakers wired in parallel and then you have 4 ohm to match your amp. Why take a risk and blow things up.

joegeek · 03-02-2008, 08:33 PM

That would be cool but.... I already have an 8 ohm 2x12 cab that I use with another amp, I think the little V8 might sound better with a decent speaker.
joe

Cantu · 03-02-2008, 08:52 PM

You'll be alright plugging into an 8 ohm cab just don't plug into a 2!!!
You'll lose a little volume but it won't hurt anything!

joegeek · 03-03-2008, 10:12 PM

Thanks Cantu, Thats what I thought.
joe

greenalbatross · 03-05-2008, 10:49 AM

Yeah, the 4ohm into 8ohm cab should be fine. I wouldn't dime the amp though. How safe an impedance mismatch is tends to depend on the amp and it's transformers. Marshalls and Voxes usually can't handle mismatches, but a lot of vintage Fenders and some Ampegs were designed to handle mismatches. I like to run my Ampeg V4 at 8 ohms into a 16 ohm cab and it works like an attenuator. I get the thickest grind with the volume up at noon. Past 1:00 and the amp sounds like it's going to blow.

coldsteal2 · 03-06-2008, 01:43 AM

Some times mismatches sound awesome

02-29-2008, 04:27 PM	#1 (permalink)
tarddoggy V.I.P. Member Join Date: Aug 2007 Location: ohio Posts: 1,977 Thanks: 0 Thanked 0 Times in 0 Posts	question about speaker ohms!?!?!?!? hey there my fellow tone gurus,I have a situation here with a student:his parents bought him a Blackheart head for his Bday,his 4x12 is a Traynor.The dilema is this.....I dont have too much experience with all this new equip,as ya'll know Im a plug and play guy,but,this head has 2-4ohm jacks,2-8ohm and 1-16 ohm.The cab has 1-4ohm,2-8ohm and 1-16 ohm and a !selector!switch for mono(260 watts) and stereo(130 watts),any help as to what goes where!!!! The last head and cab I had was a old tuck'n'roll Kustom 200(solid state) in '79 and I really dont recall any selector switches!!!! THANKS IN ADVANCE!!!!! yes,Im gonna do my homework,BUT,in the meantime...... __________________ '92 Les Paul Studio '96 Les Paul Studio '05 Les Paul Deluxe '07 Voodoo LP Special Traynor YVC-20(stock) Crate Vintage Club 20 WB Pickups:Habeneros,Firewaters,67-07 VTPs,67-07 VTP Hotttsss,Greeny 67's

02-29-2008, 06:34 PM	#2 (permalink)
greenalbatross Senior Member Join Date: Jul 2007 Posts: 127 Thanks: 0 Thanked 1 Time in 1 Post	Re: question about speaker ohms!?!?!?!? Plug the 16ohm speaker out from the head to the 16 ohm input on the cab. Switch on mono. Everything else would be for running multiple speaker cabs or running two heads into a single cab(the stereo switch and 2 8 ohm inputs on the cab).

03-01-2008, 03:11 PM	#4 (permalink)
joegeek Senior Member Join Date: Jul 2007 Posts: 254 Thanks: 37 Thanked 1 Time in 1 Post	Re: question about speaker ohms!?!?!?!? Another impedance question: I have a crate V8 amp that has a 4 ohm speaker, there are only 2 speaker leads on the transformer. Can I connect an 8 ohm speaker with out damaging the amp? I'm thinking that a higher # is ok just not a lower one. Any suggestions? (other than getting rid of the cheesy amp)

03-01-2008, 08:20 PM	#5 (permalink)
Bowhunterwt V.I.P. Member Join Date: Aug 2007 Location: Bowling Green, Ky Posts: 521 Thanks: 55 Thanked 3 Times in 1 Post	Re: question about speaker ohms!?!?!?!? Why not put two 8 ohm speakers wired in parallel and then you have 4 ohm to match your amp. Why take a risk and blow things up.

03-02-2008, 08:33 PM	#6 (permalink)
joegeek Senior Member Join Date: Jul 2007 Posts: 254 Thanks: 37 Thanked 1 Time in 1 Post	Re: question about speaker ohms!?!?!?!? That would be cool but.... I already have an 8 ohm 2x12 cab that I use with another amp, I think the little V8 might sound better with a decent speaker. joe

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03-02-2008, 08:52 PM	#7 (permalink)
Cantu V.I.P. Member Join Date: Dec 2007 Location: Detroit Posts: 708 Thanks: 0 Thanked 0 Times in 0 Posts	Re: question about speaker ohms!?!?!?!? You'll be alright plugging into an 8 ohm cab just don't plug into a 2!!! You'll lose a little volume but it won't hurt anything!

03-03-2008, 10:12 PM	#8 (permalink)
joegeek Senior Member Join Date: Jul 2007 Posts: 254 Thanks: 37 Thanked 1 Time in 1 Post	Re: question about speaker ohms!?!?!?!? Thanks Cantu, Thats what I thought. joe

03-05-2008, 10:49 AM	#9 (permalink)
greenalbatross Senior Member Join Date: Jul 2007 Posts: 127 Thanks: 0 Thanked 1 Time in 1 Post	Re: question about speaker ohms!?!?!?!? Yeah, the 4ohm into 8ohm cab should be fine. I wouldn't dime the amp though. How safe an impedance mismatch is tends to depend on the amp and it's transformers. Marshalls and Voxes usually can't handle mismatches, but a lot of vintage Fenders and some Ampegs were designed to handle mismatches. I like to run my Ampeg V4 at 8 ohms into a 16 ohm cab and it works like an attenuator. I get the thickest grind with the volume up at noon. Past 1:00 and the amp sounds like it's going to blow.

03-06-2008, 01:43 AM	#10 (permalink)
coldsteal2 Rock Star Join Date: Sep 2007 Location: Chico, CA Posts: 16,829 Thanks: 187 Thanked 56 Times in 14 Posts	Re: question about speaker ohms!?!?!?!? Some times mismatches sound awesome __________________ Soundclick Songs ........ ColdSteal2's YouTubage Videos................MusicMight Secret Service Still Rockin' at 55 .

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