Does any of you members have Mission m35i at home.
A lot of customers and reviews are not satisfied with the sound.
Even me, my speakers have to much low bass and pronounced midrange and hollow in 3-6khz range. I brought it to my friend, and we made masurement.
Not even close to linear range ...even +/-3db.
I have noticed one thing... both bass drivers LF-M020 are 4ohm....so impedance is 2ohm???
midrange is LF-M018- 8ohm and tweeter is 4ohm.
On crossover in the midrange input we have 2,7OHM resistor. How can be average impedance 8ohm....some test say 4ohm.
I think Mission is done some mistakes here.
Can anybody please check which driver is for bas and which for midrange at your speaker.
On Mx4 i can see 2 pcs LF-M018 (8ohm) and impedance is 4ohm.
Zespo?y g?o?nikowe - testy
on Mission M33i is on LF-M20 and impedance is 4ohm
Zespo?y g?o?nikowe - testy
Tomorrow i will bring speakers to my friend to mesure impedance plot.
My lm3886 amp is getting quite hot in comparisson to Mission m73.
A lot of customers and reviews are not satisfied with the sound.
Even me, my speakers have to much low bass and pronounced midrange and hollow in 3-6khz range. I brought it to my friend, and we made masurement.
Not even close to linear range ...even +/-3db.
I have noticed one thing... both bass drivers LF-M020 are 4ohm....so impedance is 2ohm???
midrange is LF-M018- 8ohm and tweeter is 4ohm.
On crossover in the midrange input we have 2,7OHM resistor. How can be average impedance 8ohm....some test say 4ohm.
I think Mission is done some mistakes here.
Can anybody please check which driver is for bas and which for midrange at your speaker.
On Mx4 i can see 2 pcs LF-M018 (8ohm) and impedance is 4ohm.
Zespo?y g?o?nikowe - testy
on Mission M33i is on LF-M20 and impedance is 4ohm
Zespo?y g?o?nikowe - testy
Tomorrow i will bring speakers to my friend to mesure impedance plot.
My lm3886 amp is getting quite hot in comparisson to Mission m73.
The Mission M35i looks like a very bassy speaker to me!
Mission M35i Specs - CNET
It is doubtless what is called a 2.5 way speaker with mid on top, and doubled basses below wired in series, I'd expect: PEERLESS-NOMEX-164
Usually you'd use 8 ohm drivers for a 4 ohm minimum impedance, but two 4 ohm basses wired in series would be OK. Polarity should be positive on all drivers. The peak on the bass frequency response is very typical of 2.5 ways and is probably too much near a wall or in a small room.
2.5 ways have a natural 6dB bafflestep which is designed to compensate for the bass that disappears backwards. But, in practise, none of us can live with that much. The wall behind the speaker always has a bass boost effect.
You can measure bass impedance with a meter across the speaker terminals. Individual drivers like the mid and tweeter would need to be taken out of circuit.
Mission M35i Specs - CNET
It is doubtless what is called a 2.5 way speaker with mid on top, and doubled basses below wired in series, I'd expect: PEERLESS-NOMEX-164
Usually you'd use 8 ohm drivers for a 4 ohm minimum impedance, but two 4 ohm basses wired in series would be OK. Polarity should be positive on all drivers. The peak on the bass frequency response is very typical of 2.5 ways and is probably too much near a wall or in a small room.
2.5 ways have a natural 6dB bafflestep which is designed to compensate for the bass that disappears backwards. But, in practise, none of us can live with that much. The wall behind the speaker always has a bass boost effect.
You can measure bass impedance with a meter across the speaker terminals. Individual drivers like the mid and tweeter would need to be taken out of circuit.
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PeterMcK....turning polarity is not the right way...you get huge deep at around 200hz. It is less bass but bass and midrange are acoustical out of phase.
System 7... thank you for your answer...but Mission M35i is real 3 way speaker. Crossover has about 200hz and 2000hz turnower frequencies. I see somewhere measure 500hz and 2800hz so I am very confused, that Mission is done something wrong.
I will bring it to another measurement ...i am mad that i have not done that earlier. I trusted Mission...
System 7... thank you for your answer...but Mission M35i is real 3 way speaker. Crossover has about 200hz and 2000hz turnower frequencies. I see somewhere measure 500hz and 2800hz so I am very confused, that Mission is done something wrong.
I will bring it to another measurement ...i am mad that i have not done that earlier. I trusted Mission...
Andro,
it would make much more sense to first draw the schematic of
how drivers are connected to each other and XO filter and
go from there to see whether manufacturer has made room
for improving the sound. They are designed for the targeted
population and in your case it would be a younger one
which is fond of overblown bass and not carying about
midrange and HF finesse. These are not high end loudspeakers.
Measuring TS parameters in the process of each driver is a plus.
it would make much more sense to first draw the schematic of
how drivers are connected to each other and XO filter and
go from there to see whether manufacturer has made room
for improving the sound. They are designed for the targeted
population and in your case it would be a younger one
which is fond of overblown bass and not carying about
midrange and HF finesse. These are not high end loudspeakers.
Measuring TS parameters in the process of each driver is a plus.
Indeed, trace the crossover and measure the impedance of the drivers with a multimeter before coming to any conclusions.
But if it's like the MX4, that is a 2.5 way for sure. The impedance would be flatter for a genuine 3 way. 4 ohm tweeter too.
And I still think it should be wired positive polarity. Because a 2.5 way is just a glorified two way at heart.
But if it's like the MX4, that is a 2.5 way for sure. The impedance would be flatter for a genuine 3 way. 4 ohm tweeter too.
And I still think it should be wired positive polarity. Because a 2.5 way is just a glorified two way at heart.
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