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Tang Band W4-1337SDF 4" Titanium Full Range Speaker
This vs. the W4-1337SD
I am relatively new to speaker building and would like to use one of these two with a sub in a 2-way design. Could someone please do a more detailed analysis of the specs and SPL/Frequency plot that would help me decide between them? I was impressed by the SD's reviews, and I would like to go with the SDF because of the lower price but am not sure if it would be as good a choice. The high end of the plot looks rougher, for example. Would that make it harder to get the SDF to perform as well as the SD at high frequencies? What about other features?
Just wanted to correct some information provided in the previous answers and try to actually answer your question...The statement that a driver with "A qts of .4 or less is best in a sealed enclosure, while .4 or greater in a vented design" is completely backwards. To quote Vance Dickason #Loud Speaker Design Cookbook, fifth edition, page 16#, "Closed-box loudspeakers generally require woofers with a fairly high Qts of greater than .3", and also #page 43#, "Woofers for vented enclosures tend to have less cone mass,... and lower overall Qts".I wanted to quote an expert so you didn't have to take my word for it, but this is a pretty basic rule of thumb. Also, a difference in Qts of .03 #.34 to .37# is not significant if you are planning to use these with a sub where you wouldn't be worried about bass extension. And it's probably well within the measurement uncertainty of the equipment used to determine Qts, anyway.I would go with the SDF due to it's higher efficiency and lower cost, but that would just be my preference. A small vented enclosure should give you an F3 of about 90 Hz, which would work well with a sub. And the high frequency response shouldn't be an issue if you are using it in a two-way design, as you state above.
Date published: 2013-09-27
One reviewer added a complex notch filter and employed a tweeter. You would think a little 4 in full range driver wouldn't need all that.
I would think the reason for a full range driver is to keep things simple. I was thinking of this driver for a simple 2 way, the reviews seem to imply it needs doctoring, would this driver beokay stand alone or is the doctoring nescessary.
I'm using these for >500Hz in a two-way and have them in their own small, completely lined division of the larger enclosure. All they seem to need is a zobel network to tame the very top end. With that and time to break in they sound incredible (and I'm assuming they would be even less likely to need filtering below 500Hz).
Date published: 2013-09-01
Sealed or Vented
Is this driver better suited for a sealed enclosure or a vented enclosure?
These will work in either type but if you want useful bass from it I would recommend venting.
Date published: 2013-10-15
What is the difference from the W4-1337SD?
The "F" at the end of this product's model number indicates a ferrite magnet structure, as opposed to the neodymium magnet of the original model. We can most likely expect this general trend to continue, given the exponential increases in the cost of neodymium over the past year or so.
Date published: 2013-09-01
I'm interested in purchasing these for a project and have a few questions. First, will these perform well when run full-range, with no filters, crossovers, etc? Second, what size and configuration (ported or non) enclosure would be optimal?
Whether this driver will need any type of filter is subjective, it will probably be fine by itself for most applications. The recommended enclosure size is 0.09 cubic feet with a 1" diameter, 4" long port for a tuning frequency of 70 Hz.
Date published: 2013-01-21
Enclosure recommendation follow up
An enclosuure of .09 is recommended; is that volume factoring in the space taken up by the port itself and the magnet? In other words, would I have to add the volume of the magnet and the port to the recommended enclosure volume of .09 to arrive at the correct overall enclosure volume?
The 0.09 figure is total box volume. If you build it to 0.09 you will end up with about 0.075 after displacement.
Date published: 2013-01-22