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Website, Store => General => Topic started by: Plato on November 06, 2011, 10:05:21 AM



Title: Significant sound changes on different impedances?
Post by: Plato on November 06, 2011, 10:05:21 AM
I bought a used OTS HRM 50 shortly.
Now I am planning to built a 2x12 cabinet with an G12H30 and a V30 for it, intending to wire them parallel.

Both speakers are available at either 8 or 16 Ohms.

Now I am unsure if 2 x 8 Ohms (=4 Ohms for the cab) or 2 x 16 Ohms (=8 Ohms for the cab) would be the better choice.
Will I notice/hear an alteration on the different impedances at all?

 ???


Title: Re: Significant sound changes on different impedances?
Post by: T Wilcox on November 06, 2011, 04:30:02 PM
Refer to this thread
http://ceriatoneforum.com/index.php?topic=4012.0

You could make the 2x12 switchable from 4 to 16 if you go with the 8 ohm speakers.

Most people are using G12-65 or EVM12l speakers with their D-clones, have you played your HRM through G12H30 V30 setup already?

Todd


Title: Re: Significant sound changes on different impedances?
Post by: Plato on November 06, 2011, 05:37:12 PM
Hi there,

foa, thanks for your answer!

>>>Most people are using G12-65 or EVM12l speakers with their D-clones, have you played your HRM through G12H30 V30 setup already?<<<

No, the G12H30 and V30 combination was a commendation from this forum.
While my OTS has 50 Watts, a pair of G12-65 wouldn't match the power output of my amp (2x65W = 130W) - right?  ???

You say 2 x 8 Ohm would offer the possibility to run the cab at 4, 8 and 16 Ohms. I see 4 Ohms (2x8 parallel) and 16 (2x8 serial), but how could I run them at 8 (together)?

Andreas


Title: Re: Significant sound changes on different impedances?
Post by: plasticvonaband on November 06, 2011, 09:28:57 PM
The power rating isn't a big deal, as long as you aren't looking for speaker breakup. I also have a 50 watter l, and run two eminence speakers rated at 400 watts each. With two 8 ohm speakers your choices are 4 ohm x2 parallel, 16 ohm x2 series, or 8 ohm x1.


Title: Re: Significant sound changes on different impedances?
Post by: SoundPerf on November 06, 2011, 10:52:12 PM
Hello, I don't think "T Wilcox" was suggesting you would be able to do 8 ohms also. Unless you want to get into more complicated setups I would just go with (2x16) for 8 Ohms and be done with it. I usually look at it that if I wanted to add another cabinet it would make for a better fit.

As for power rating, I wouldn't worry about that either. I have a WGS ET-65 and Veteran 30 setup which would be their take on a Celestion G12-65 and Vintage 30 and it sounds super. Other than trying an EV12 speaker (which I never have) I can't imagine a better sounding combination.

I had a long time friend that I haven't seen for a long time over the other day. He is 56 and was quite experienced with music and amps from way back. He doesn't play much anymore and hasn't been in the electric guitar scene for quite some time. When he was in working bands he mostly played Fenders from the 60's. Anyway, I was playing my HRM 50 for him and he got this big smile on his face and just kept saying how he hasn't heard an amp sound like that for a long time. We went our for dinner and a few times out of blue, mentioned how he couldn't believe how good my amp sounded. It seemed to me that the sound sparked some old memories of nice amps of old that he played....I was pretty happy about this.  :)

Good Luck.


Title: Re: Significant sound changes on different impedances?
Post by: Plato on November 09, 2011, 07:33:57 AM
Thanks for your help.

I now built a cab with a V30 and a G12-65 (a sudden opportunity) (16 Ohm each) which seem to complement one another pretty well.
While I am using them in closed cabinet by now, I will try them in an open one as soon as possible as well.
I am curious about the differences with that.

Andreas


Title: Re: Significant sound changes on different impedances?
Post by: SoundPerf on November 09, 2011, 06:31:55 PM
Thanks for your help.

I now built a cab with a V30 and a G12-65 (a sudden opportunity) (16 Ohm each) which seem to complement one another pretty well.
While I am using them in closed cabinet by now, I will try them in an open one as soon as possible as well.
I am curious about the differences with that.

Andreas

I'm using an Avatar 2X12 open back cabinet. For the type of sound I want to achieve with this amp and my present playing style, the open back is the way to go. IMO. As far as sound difference, it's what you would expect. A much more open sound with deeper bass response, not as focused as a closed back would be. To me it really depends on the type of sound you're wanting. But, to get those good "Fendery Cleans" with nice bottom end an open back is a must. I think a G12-65 type speaker is better suited for an open back also.


Title: Re: Significant sound changes on different impedances?
Post by: johnnyanderson on December 24, 2011, 04:43:49 PM
Now I am planning to built a 2x12 cabinet with an G12H30 and a V30 for it, intending to wire them parallel.