Hi Folks,
I am experimenting with a small OB design and would appreciate your feedback. My goals were to develop a room friendly dipole by using a 3" full range driver. A helper woofer is used to address dipole cancellation.
I am very pleased with the Peerless 830987 (inverted surround version of 830986) and have documented my findings below. Even though my project might be considered a 2-way, I thought this might be helpful to those of you who are looking for an inexpensive apt driver for true single driver application.
http://home.comcast.net/~cunundrum
Ed
I am experimenting with a small OB design and would appreciate your feedback. My goals were to develop a room friendly dipole by using a 3" full range driver. A helper woofer is used to address dipole cancellation.
I am very pleased with the Peerless 830987 (inverted surround version of 830986) and have documented my findings below. Even though my project might be considered a 2-way, I thought this might be helpful to those of you who are looking for an inexpensive apt driver for true single driver application.
http://home.comcast.net/~cunundrum
Ed
Love the simple baffle design. I was thinking about something similar using the 'full range' PE buyout for $10 but my sims were somewhat disappointing with similar baffle dimensions. It may sound better in real life tho... Your project is inspiring!
My experience with software simulation in dipoles has been somewhat hit-or-miss, much more so than with conventional designs. I built a simple test baffle with panels that slide on both axis allowing for multiple height/width combos. Of course this is only helpful when you have the driver in hand, but it seems to be a good way to model a baffle in the particular environment your working in. I wouldn't be surprised if PE buyout sounds better than it actually modeled.
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Joined 2009
Hi matevana,
I checked your design using MJK:s program... Seems you made a good design 😎 (compare with my simulations). Noticed the low FR corner that can be extended with a good monopole sub..See the T-TQWT using an additional Alpine woofer.😀b
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I just recently (this week) bought some of the Lagan beech counter top from Ikea, and can say that it seems well constructed, solid and fairly heavy in its sheet form. Its going to be used for a flexy table/rack build coming soon. It seems like it would be great for dipoles, or any front baffle...
The write up looks great, and is filled with useful information. Did you consider any other 10" woofers?
The write up looks great, and is filled with useful information. Did you consider any other 10" woofers?
Neat OB that looks nice, good work! But what bothers me the most is the use of active EQ and the power needed to drive this thing to a usable SPL. You can't use Single end triode or TA2024 amps with this OB.
Hi matevana,
b
Bjorno,
Thanks so much for your comments. That is very encouraging. I would love to add a 2nd woofer and move the full range to about 32" off the floor. You may have provided the motivation necessary to try that 😀
Surprisingly I have been using (2) Tripath TK2050 amps (30 watts/side) on the highs and lows. Worked very well for the highs and marginally for the lows. I now use a QSC GX3 power amp for the low side and the sound is amazing. I absolutely agree that the efficiency isn't there for most tube amps or first gen T amps.
Note that the Dayton DTA-100 is just under a hundred bucks and it uses the TK-2050 chip set, complete with a 24V 5A power source. You may prefer it to your TA2024.
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