Mcm 55-1870

UNDERSTANDIN · 5th March 2006, 07:07 PM

Anyone familiar with the MCM 55-1870? It's on sale for $9 and I'm curious about it's performance.

http://www.mcminone.com/product.asp?...5Fid=55%2D1870

Cal Weldon · 5th March 2006, 07:23 PM

I have four per channel on my HT system along with the HiVi K1 tweeter.

They're fine for the price, don't expect the world.

UNDERSTANDIN · 5th March 2006, 07:34 PM

That is the EXACT same design idea that I had in mind. Would you care to share your design plans and any further comments and ideas?

UNDERSTANDIN · 5th March 2006, 07:36 PM

Also, by the way, how do you like the K1?

Cal Weldon · 5th March 2006, 08:06 PM

I was surprised how much I like the K1. For my ears it's a very good deal.

The cabinets are tall (55") and skinny (5.5") to fit window mullions. So that one dimension wasn't that much longer than the others, the cabinet was divided into two chambers in a asymmetric pattern, two woofers in each. Both chambers are ported. The K1 is in one of them. They are mounted to the mullions in what looks like an inverted manner with the bulk of the cabinet up near the ceiling and the drivers near the bottom at ear level. So in this "inverted" manner they are a MMMTM. All drivers are closely stacked near the "bottom" as the chambers were asymmetric. (did I say that already?)

Cal Weldon · 5th March 2006, 08:07 PM

Forgot:

12dB L.R. @ 3k

UNDERSTANDIN · 5th March 2006, 08:21 PM

Thanks for the response. You confirm what I've heard about the K1. I was considering A WWTWW design, but now I will ponder your setup. I can get the tweeter up higher like that. I'll just use a one large box construction however, for simplicity. A similar cross will be used. I think it will be a good bang for the buck HT system.

RJ · 6th March 2006, 12:06 AM

I would call it more of a 4 1/2" midbass driver. It's a little bit smaller than the 5" Dayton Aluminum. Sounds about the same. Works great in my 2 1/2 way TMM...

Cal Weldon · 9th March 2006, 05:13 PM

Here's a sideways shot of them so you can see what they look like.

UNDERSTANDIN · 9th March 2006, 05:32 PM

They really look good. Nice work. I ordered 10 K1s from Madisound and some Peerless 5 inch buyouts. I'll get the
55-1870s that I need before they go off sale. I have a few ideas I'm kicking around. Are they in sealed enclosures? How much power can they take? What size room are they in? Thanks for responding.

George

5th March 2006, 07:07 PM	#1
UNDERSTANDIN diyAudio Member Join Date: Apr 2005 Location: New Jersey	Mcm 55-1870 Anyone familiar with the MCM 55-1870? It's on sale for $9 and I'm curious about it's performance. http://www.mcminone.com/product.asp?...5Fid=55%2D1870

5th March 2006, 07:23 PM	#2
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	I have four per channel on my HT system along with the HiVi K1 tweeter. They're fine for the price, don't expect the world. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

5th March 2006, 08:06 PM	#5
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	I was surprised how much I like the K1. For my ears it's a very good deal. The cabinets are tall (55") and skinny (5.5") to fit window mullions. So that one dimension wasn't that much longer than the others, the cabinet was divided into two chambers in a asymmetric pattern, two woofers in each. Both chambers are ported. The K1 is in one of them. They are mounted to the mullions in what looks like an inverted manner with the bulk of the cabinet up near the ceiling and the drivers near the bottom at ear level. So in this "inverted" manner they are a MMMTM. All drivers are closely stacked near the "bottom" as the chambers were asymmetric. (did I say that already?) __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

5th March 2006, 08:07 PM	#6
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Forgot: 12dB L.R. @ 3k __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

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5th March 2006, 07:34 PM	#3
UNDERSTANDIN diyAudio Member Join Date: Apr 2005 Location: New Jersey	That is the EXACT same design idea that I had in mind. Would you care to share your design plans and any further comments and ideas?

5th March 2006, 07:36 PM	#4
UNDERSTANDIN diyAudio Member Join Date: Apr 2005 Location: New Jersey	Also, by the way, how do you like the K1?

5th March 2006, 08:21 PM	#7
UNDERSTANDIN diyAudio Member Join Date: Apr 2005 Location: New Jersey	Thanks for the response. You confirm what I've heard about the K1. I was considering A WWTWW design, but now I will ponder your setup. I can get the tweeter up higher like that. I'll just use a one large box construction however, for simplicity. A similar cross will be used. I think it will be a good bang for the buck HT system.

6th March 2006, 12:06 AM	#8
RJ diyAudio Member Join Date: Oct 2004	I would call it more of a 4 1/2" midbass driver. It's a little bit smaller than the 5" Dayton Aluminum. Sounds about the same. Works great in my 2 1/2 way TMM...

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