1 post / 0 new

HD150 into a 5.3 Ohm Cab?


B. Fredericks
Posted on Tuesday, June 07, 2005 - 12:09 am:   


I have just aquired an old bass cab that I want to use with my HD-150. It's a Traynor 6x10" cab with six 8 ohm speakers, but the problem is that I don't think they can be wired in a normal ohmage like 4 or 8 ohms for the Music Man. The best that I can figure is to parallel/series them to 5.3 Ohms. If I set my MM head to 4 ohms and run a 5.3 Ohm cab with it am I going to run into problems? Any other ideas?

B. Fredericks
michael kaus
Posted on Tuesday, June 07, 2005 - 05:01 am:   

Where did you come up with 5.3 ohms? The only way you could come up with that in ser/par is if the speakers are 5.3 ohms each. If THAT IS the case. it will not hurt at all to run it that way. The amp will take a 100% mismatch and still do fine. You won't even notice the difference at 5.3. Still would like to know how you came up with that figure though. Mike.
B. Fredericks
Posted on Tuesday, June 07, 2005 - 10:30 am:   

Thanks for the info! I'm not that saavy but here's where I got my info.
The specs on the original cab. It's the YC-610:

http://www.yorkville.com/products.asp?ty pe=71&cat=46&id=295#yc610

Here's a wiring diagram:

http://www.nova4x4.com/uploads/112904/6x 10cab.jpg

A friend of mine wrote down the formula but I don't have it here at work.
Is there better way for me to do it?

Steve Kennedy (admin)
Posted on Tuesday, June 07, 2005 - 03:05 pm:   

He's right... the schematic shows 6 8-ohm speakers wired as 3 parallel 16 ohm loads.

1/RT = 1/R1 + 1/R2 +1/R3

1/5.33 = 1/16 +1/16 +1/6

RT =5.33 ohms

The 4-ohm tap is probably the best way to go in this circumstance.


Posted on Wednesday, June 08, 2005 - 04:31 am:   

Damn, I didn't even SEE the part about 6-10's! I had 4-12's in my head and as usual, shot my mouth off without reading closer. Oh well. Mike.
B. Fredericks
Posted on Wednesday, June 08, 2005 - 11:01 am:   

No problem Mike. It's no wonder 6x10 cabs aren't that common, although SWR makes one called the Goliath Senior that is listed as 4 ohms. Maybe they put some resistors in there to drop the ohmage or something.

Anyways, once again, thanks for the input guys.
I'm looking forward to wiring the sucker up and lettin' her rip!