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150 HD head into a 16 ohm Cab
by oldgitguy on 2013-03-15 19:07:44

OK, I've read many of the other posts on topics like this but not quite what I'm going to ask.

I want to connect my two 8 ohm speaker out jacks, from my spider iv hd 150, using speaker cables, to a "Y" adapter, specifically a "Livewire" GPP-359. It has a 1/4" stereo Male Plug and two 1/4" mono Female jacks.

Then I want to plug the adapter into my Peavey Windsor 16 ohm cabinet.

So I will have two 8 ohm jacks out to the stereo input of a 16 ohm cabinet that is wired with four 16 ohm supreme XL's in series-parallel for a total of 16 ohms.

Is this going to hurt my head unit?



Re: 150 HD head into a 16 ohm Cab
by oldgitguy on 2013-03-15 20:27:08

OK. I tried it and no luck. Got major buzz from the speaker hooked that way so I will settle on just having a single cable connected to the left side of the head to the speaker cab.

It works that way and sounds good enough for my playing.



Re: 150 HD head into a 16 ohm Cab
by fflbrgst on 2013-03-16 19:03:39

As I posted in the other thread, this will cause damage to your amp due to the ouput imbalance.   You need to rewire the cabinet, so that you have two 8 ohm loads for the amp (2 of the 16 ohm speakers wired in parrallel will have an 8 ohm impedance).



Re: 150 HD head into a 16 ohm Cab
by oldgitguy on 2013-03-18 11:42:12

Weel.... I have learned something. I bought this rig and did not realize I needed a cab with two 8 ohm hookups. So I get one.

Now I find out the guy I bought it from had been using it WRONG for quite some time and I think that is where the loud hum is coming from when I turn it on and it is connected properly. He was using it hooked only to the left channel and I think he fried the right channel.

So my questions to " fflbrgst" or anyone else whis his knowledge. What does the amp sound like when this happens? What should it cost to have the right channel fixed?



Re: 150 HD head into a 16 ohm Cab
by oldgitguy on 2013-03-18 13:41:09

I took it to the local line 6 service repair center. He confirmed a fried right channel driver. Cost $60.00.

Oh well lesson learned.



Re: 150 HD head into a 16 ohm Cab
by fflbrgst on 2013-03-19 06:24:14

That's actually a very reasonable charge!   Hope it is working to your satisfaction now.



Re: 150 HD head into a 16 ohm Cab
by oldgitguy on 2013-03-22 20:04:27

OK.

I got the head back and it works great!

I lucked out because the guy I bought it from only fried the right side driver the left side was ok and the transformer was like new.

The Sarasota Line 6 Authorized Repair Center is fantastic. I recommend Gary to anybody needing work done for a honest cost.




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