M&K VX-7 repair question

GraceBass · 16th June 2008, 06:44 PM

I am in the process of repairing a M&K VX-7 subwoofer that I inherited from a friend. I repaired the speaker by replacing the surround. (Went well; my first such repair) But I found out the the amp is fried. From my research I've determined that the amp for this sub is (was) 50 Watts.

I would like to use this 70 Watt amp:

http://www.partsexpress.com/pe/showd...number=300-784

The problem is that the speaker is a 2-ohm unit. The amp is rated for a 4-ohm load. Can I use this amp as-is? Or, should I put a 2-ohm resistor in series?

Mikey p · 17th June 2008, 07:04 PM

Are you sure it's 2 ohm?

GraceBass · 17th June 2008, 08:05 PM

The speaker magnet has a sticker on it that says it's 2ohm, and I measured 2.5ohm with my DMM.

JohnL · 18th June 2008, 11:38 AM

If your not in a rush, you might want to watch ebay for the correct amp. I've seen a ton of M&K parts on there since they closed their doors last year.

GraceBass · 19th June 2008, 06:39 PM

Perhaps I should try a different tack on this request. Assuming that I am going to re-amp this sub with a 70 watt, 4 ohm capable amp,

Do I:

1) See how (of if) the amp can handle a 2 ohm load
2) Place a 2 ohm resistor in series with the speaker for safety

Won't anyone take a stab at this? C'mon, this must be child's play for some of you...

flacoman · 2nd July 2008, 01:23 PM

Steve at apexjr may have what you need,and is a site sponsor

http://apexjr.com/MnK100MP.htm

HTH
Jorge

16th June 2008, 06:44 PM	#1
GraceBass diyAudio Member Join Date: Mar 2007	M&K VX-7 repair question I am in the process of repairing a M&K VX-7 subwoofer that I inherited from a friend. I repaired the speaker by replacing the surround. (Went well; my first such repair) But I found out the the amp is fried. From my research I've determined that the amp for this sub is (was) 50 Watts. I would like to use this 70 Watt amp: http://www.partsexpress.com/pe/showd...number=300-784 The problem is that the speaker is a 2-ohm unit. The amp is rated for a 4-ohm load. Can I use this amp as-is? Or, should I put a 2-ohm resistor in series?

19th June 2008, 06:39 PM	#5
GraceBass diyAudio Member Join Date: Mar 2007	Request rephrased Perhaps I should try a different tack on this request. Assuming that I am going to re-amp this sub with a 70 watt, 4 ohm capable amp, Do I: 1) See how (of if) the amp can handle a 2 ohm load 2) Place a 2 ohm resistor in series with the speaker for safety Won't anyone take a stab at this? C'mon, this must be child's play for some of you...

2nd July 2008, 01:23 PM	#6
flacoman diyAudio Member Join Date: Feb 2006 Location: Ft Laud. Fla	How 'bout this? Steve at apexjr may have what you need,and is a site sponsor http://apexjr.com/MnK100MP.htm HTH Jorge

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17th June 2008, 07:04 PM	#2
Mikey p diyAudio Member Join Date: Feb 2004 Location: Sask. Canada	Are you sure it's 2 ohm?

17th June 2008, 08:05 PM	#3
GraceBass diyAudio Member Join Date: Mar 2007	The speaker magnet has a sticker on it that says it's 2ohm, and I measured 2.5ohm with my DMM.

18th June 2008, 11:38 AM	#4
JohnL diyAudio Member Join Date: Apr 2004 Location: Tampa, FL	If your not in a rush, you might want to watch ebay for the correct amp. I've seen a ton of M&K parts on there since they closed their doors last year.

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