Chrisssssssss
Active Member
Hey all,
I ended up picking up a pair of nht model 2 floorstanders in really nice shape for a good price. I will take some pics once my power comes back on here. It's windy outside and the power is out around here.
These are in nice shape, have a mylar tweeter, 6.5 midbass in a sealed chamber with 2 6.5 drivers as the low end drivers, and rated overall at 8 ohm as stated on the back. The tweeter is nothing special and I would like to replace it.
Anyways these need a refoam job on the 6.5's used as the midbass driver on both sides. The low bass drivers are fine as they are rubber surrounds.
The midbass woofers are foam surround and need replacing either I refoam them or replace them with another driver. I have a pile of 6.5" car audio drivers that would fit perfectly however they are a 4 ohm driver (4.2 measured) vs the original one at 6ohm (5.7 measured). How well would they work? What happens to the xover usually in this case?
The tweeter ohms out to 6.6 measured and the low bass drivers is measured at 6.4 on each one x2 per side. The speaker overall measures to 4.8 overall but listed at 8 ohm on the back nameplate of the speaker cabinet.
My question basically is what happens to the xover points as a rule of thumb if you replace one driver with another one of a different ohm measurement. I am not quite sure what I am going to do yet but also thinking of rebuilding the xovers anyways and maybe mod them to specs using the different driver. What about the tweeter? What if i replace that with something a bit different on the ohm scale?
Does the xover frequency change higher or lower in relation to the driver ohm measurement.
Since the midbass is the same size as the bass driver I am not too sure whether or not it would be a bandpass xover seeing that driver or not. My guess would be yes, but I am going to look for the exact specs on the net and also be looking for xover schematics also. If anybody can help there pm if you could.
Thanks for any help or advice. I am writing this on my iPhone because the computer has no power so no AK there and had to do this whole post on the iPhone. It kinda sucks for writing long things and this is about the end of my patience level with it. I am sitting beside this pair of speakers with a screwdriver, a flashlight and a backlit multimeter writing down measurements and unscrewing drivers in pitch black while the power is out, as well as writing all about it on my iPhone to AK. Is that nuts or what?
This was the only thing I could find to do while no power. Talk about AK eh?
Thanks all.
I ended up picking up a pair of nht model 2 floorstanders in really nice shape for a good price. I will take some pics once my power comes back on here. It's windy outside and the power is out around here.
These are in nice shape, have a mylar tweeter, 6.5 midbass in a sealed chamber with 2 6.5 drivers as the low end drivers, and rated overall at 8 ohm as stated on the back. The tweeter is nothing special and I would like to replace it.
Anyways these need a refoam job on the 6.5's used as the midbass driver on both sides. The low bass drivers are fine as they are rubber surrounds.
The midbass woofers are foam surround and need replacing either I refoam them or replace them with another driver. I have a pile of 6.5" car audio drivers that would fit perfectly however they are a 4 ohm driver (4.2 measured) vs the original one at 6ohm (5.7 measured). How well would they work? What happens to the xover usually in this case?
The tweeter ohms out to 6.6 measured and the low bass drivers is measured at 6.4 on each one x2 per side. The speaker overall measures to 4.8 overall but listed at 8 ohm on the back nameplate of the speaker cabinet.
My question basically is what happens to the xover points as a rule of thumb if you replace one driver with another one of a different ohm measurement. I am not quite sure what I am going to do yet but also thinking of rebuilding the xovers anyways and maybe mod them to specs using the different driver. What about the tweeter? What if i replace that with something a bit different on the ohm scale?
Does the xover frequency change higher or lower in relation to the driver ohm measurement.
Since the midbass is the same size as the bass driver I am not too sure whether or not it would be a bandpass xover seeing that driver or not. My guess would be yes, but I am going to look for the exact specs on the net and also be looking for xover schematics also. If anybody can help there pm if you could.
Thanks for any help or advice. I am writing this on my iPhone because the computer has no power so no AK there and had to do this whole post on the iPhone. It kinda sucks for writing long things and this is about the end of my patience level with it. I am sitting beside this pair of speakers with a screwdriver, a flashlight and a backlit multimeter writing down measurements and unscrewing drivers in pitch black while the power is out, as well as writing all about it on my iPhone to AK. Is that nuts or what?
This was the only thing I could find to do while no power. Talk about AK eh?
Thanks all.
