I'm sure others can chime in on kits, Jeff Bagby has quite a cult following - so lots of builds of his out there. I don't really pay much attention to kits, though.
Jr is being modest, any of his designs are typically budget friendly. You might browse the pics here https://midwestaudio.club/ for ideas
The only reason I bring this up is because I have these and the cabinets are terrible. As I said earlier, they need to be braced and dampened. Also, the drivers are slightly recessed and have those square edges which I'm pretty sure restricts the soundstage. (As I have another set of speaker that don't have front baffles like these.)
Fit is perfect. The tweeters sound basically like the originals. Of course they will need time to open up. The new ones are 30 watts and are a bit louder while the original were 15 watts. I'm happy thus far. Thanks JR!!!
Your project is interesting, and really well documented. It shows what can be done for little money. Kudos. One suggestion that would improve the whole article: ditch the foul language. It detracts from your work.
Johnny, educate me. In referring to the free air measurement, you comment about the "big ugly" impedance bump at 700, but I only see a minor wobble. What's so bad there, or have I missed something?
An ohm or two ripple can indicate several db of linear distortion, such as a break-up or dip in the response. 700Hz is right in the passband of the woofer, so it is more concerning than a similar ripple at, say, 4.5K or so.
In this case, I think it is likely a dip in the response - I saw nothing too obvious on the in-box FR or distortion measurements. Actually, other than the useless (in this box) TS parameters, this is a very nice driver and would make a completely acceptable large format midrange.
So, disregard my concerns for the 700Hz impedance blip - it is likely not a significant energy storage issue.
I bought a Pair of the TFE100 towers for my son as a Christmas gift, They came today so unboxed them to check the condition and hooked them up to make sure they work and they sound ok for the 250 or so I paid but at the original sticker price of 799.99 I would have been furious but then again I'm a cheapskate and bought my speakers used lol.
I'm gonna listen to them a bit more before I give them to him and see if the sound improves a bit, They are not awful but something seems off about them to me, The old lady thinks he'll love em...
Couple notes, the breakup is high enough in frequency that it can be tanked fairly easily. I did not nearfield any measurements (maybe next time), but taking the baffle signature out of the equation should yield a pretty flat response.
Here is the distortion measurement:
Measures fairly clean, im generally impressed. The low end in particular is very clean. It sounds like it, too.
If I get some time this coming weekend, I will start some more serious measurement work and start a design.
Comments
Fit is perfect. The tweeters sound basically like the originals. Of course they will need time to open up. The new ones are 30 watts and are a bit louder while the original were 15 watts. I'm happy thus far. Thanks JR!!!
Left
Right
Johnny, educate me. In referring to the free air measurement, you comment about the "big ugly" impedance bump at 700, but I only see a minor wobble. What's so bad there, or have I missed something?
In this case, I think it is likely a dip in the response - I saw nothing too obvious on the in-box FR or distortion measurements. Actually, other than the useless (in this box) TS parameters, this is a very nice driver and would make a completely acceptable large format midrange.
So, disregard my concerns for the 700Hz impedance blip - it is likely not a significant energy storage issue.
I'm gonna listen to them a bit more before I give them to him and see if the sound improves a bit, They are not awful but something seems off about them to me, The old lady thinks he'll love em...
Couple notes, the breakup is high enough in frequency that it can be tanked fairly easily. I did not nearfield any measurements (maybe next time), but taking the baffle signature out of the equation should yield a pretty flat response.
Here is the distortion measurement:
Measures fairly clean, im generally impressed. The low end in particular is very clean. It sounds like it, too.
If I get some time this coming weekend, I will start some more serious measurement work and start a design.