Polk Monitor 7b

[mhinsda]

Having trouble finding information on these speakers.
Are they 6ohm or 8ohm?
They do have a peerless tweeter.
Thanks

 

[Mortsnets]

Nominal impedance 8 ohms, yes that's the Peerless tweeter

 

[RTally]

Here is an old thread about the Polk Monitor 7.
https://audiokarma.org/forums/index.php?threads/polk-monitor-7-info-specs.134259/

The 7B has a nominal impedance of 8 ohms per advertising literature. See the specs on page 116 of the October 1981 Audio Equipment Directory.
https://worldradiohistory.com/Archive-All-Audio/Audio-Magazine.htm

 

[mhinsda]

Thanks! Very informative replies.
The speakers are very good.

 

[RTally]

Thanks! Very informative replies.
The speakers are very good.

Yep. they are great speakers. Even though I have yet to recap and glue the magnets on mine, they sound great.

 

[Lavane]

The concensus seems to be that the 7's are a more balance sounding speaker compared to the others in the Monitor line. I wouldn't mind connecting up a pair to compare with my 10's.

 

[viapol]

The concensus seems to be that the 7's are a more balance sounding speaker compared to the others in the Monitor line. I wouldn't mind connecting up a pair to compare with my 10's.

Not this consensus..I have the 7bs and want the 10s...but the 7bs are better than the 7s

 

[Lavane]

Not this consensus..I have the 7bs and want the 10s...but the 7bs are better than the 7s

I have two pairs of10's, 5jr+'s and now a pair of 7's with the peerless tweeters.
So far I still like the 10's just a bit better. I replaced the SL-2000 tweeters in one pair of the 10's with the RDO-194's, dynamat on the driver and passive radiator spokes and rebuilt the crossovers. The crossovers in the 7's and 5jr+'s have been recapped as well. The 7's do sound really good. They are very well balanced. But I do like the bottom end with the 10's. I don't feel a need to use my sub with them. My main system is tube and I have no tone controls. The preamp and my amps are voiced by the tubes I selected.
As soon as I get some new grills made for the 7's I'll set them up and listen to them for a longer period. They didn't have grills when I got them.
I'll probably pull the pair of Marantz Imperal 6's I have connected to a Dynaco ST-35 and see how the 7's do with them. I like the 5jr's too. They sound great with a 300B SET tube amp I have in another room.

 

[odcics2]

Any info regarding the 7B impedance curve? (I know the "nominal" is said to be 8 ohms)
Does it dip to near 4 ohms anyplace?

 

[Lavane]

Any info regarding the 7B impedance curve? (I know the "nominal" is said to be 8 ohms)
Does it dip to near 4 ohms anyplace?

I haven't read or heard anything, but being that they're 6 ohm speakers, I would think they do dip down to the 4 or maybe the 3 ohm range momentarily. Nothing to worry about really. I connect the 10's and 7's to the 4 ohm taps on my tube amps. They sound a little better connected to the 4 ohm taps than they do on the 8 ohm taps. The 6 ohm Polk's shouldn't have any issues with most SS amps though. Even if an amp is only rated for 8 ohm speakers. The amp may run a bit warmer? My main tube preamp doesn’t have tone controls, so I do have a powered subwoofer connected to the 7's to bump up the low end a bit around 50hz down. Connected to my SS preamp with tone controls and a power amp I don't need the sub though.

 

[odcics2]

Got the Polks hooked up to my MAC1500, 4 ohm taps. Doing some critical listening!