Replace broken driver or build Tuba HT - AVS Forum
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post #1 of 17 Old 10-26-2012, 01:54 PM - Thread Starter
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I have an A7-350 with a bad driver, I am contemplating buying a replacement driver. The Lt1300 is being fixed and I was considering a Q15 from FI car audio. I don't want to step down in performance as what little time my A7-350 worked I enjoyed it. I always felt it could use a little more kick for music but I did enjoy the low end for HT which was good because I used it for HT about 90% of the time. I am open to suggestions for replacement drivers if you feel their is a more suitable replacement.

The other option is the Tuba HT. I have been looking at this design for a little while now and was thinking I might give it a try now. Would my lt1300 be too much for this design or could I just keep it turned down as to not feed it too much power?



Basically, which would be your pick? Replace the driver or build the Tuba HT

If you pick replace it, what driver would you suggest and why would you recommend it.

If you suggest building the Tuba, would the lt1300 work and why would it be better?


By the way, I am not doing either until after Christmas.

Thanks
Russ
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post #2 of 17 Old 10-27-2012, 07:35 AM - Thread Starter
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post #3 of 17 Old 10-27-2012, 09:19 AM
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Maybe list the internal dimensions or internal volume for the A7-350 and port dimensions if it is ported. More details will help the more knowledgeable guys help you or you to help yourself better through searching the forums and web
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post #4 of 17 Old 10-27-2012, 12:05 PM
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A THT or F-20 are hard to beat for the price if you don't mind a big enclosure and output >20hz....LOTS of output. Don't know about the A7-350. If you have more money to spend (at least 2-3 times) there are better options in DIY.

Current HT: HTPC-->Epson 5010 projector-->135" screen, BFM TLAHs x7 & THT

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post #5 of 17 Old 10-27-2012, 03:24 PM - Thread Starter
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Quote:
Originally Posted by louisdamani View Post

Maybe list the internal dimensions or internal volume for the A7-350 and port dimensions if it is ported. More details will help the more knowledgeable guys help you or you to help yourself better through searching the forums and web

I don't know the internal volume but the external measurements are 20 by 24 by 28 and there is 1 inch bracing throughout, plus there is 1 6 inch port.
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post #6 of 17 Old 10-28-2012, 11:17 AM - Thread Starter
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Quote:
Originally Posted by AndreasMergner View Post

A THT or F-20 are hard to beat for the price if you don't mind a big enclosure and output >20hz....LOTS of output. Don't know about the A7-350. If you have more money to spend (at least 2-3 times) there are better options in DIY.


I really don't want to spend more than $500 at this time. We just bought the a7-350 back in March and are trying to buy a new house, so I don't want to throw too much money at it right now, maybe in a couple of years.
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post #7 of 17 Old 10-31-2012, 10:23 AM
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You could tackle a THT for under $400 easily. I think I had under $350 in mine and it was amazing for the price!

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post #8 of 17 Old 10-31-2012, 01:23 PM - Thread Starter
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Quote:
Originally Posted by jpmst3 View Post

You could tackle a THT for under $400 easily. I think I had under $350 in mine and it was amazing for the price!

Thanks, that's why I am leaning towards it. A replacement driver for my A7-350 would cost me that much alone and I am hearing great things about the THT's.

Do you know if the LT1300 amp that I have would be too much for the THT?
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post #9 of 17 Old 11-01-2012, 07:04 AM
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Yes, way too much (at least potentially)! The THT can handle roughly 250 watts max and trust me that is mucho plenty. You can use that amp, but you had better be sure you set things up accordingly or you will shred the driver.
That is the beauty of horn loaded designs, very efficient, which saves money in amplification.

You could sell your 1300 and pick up a Dayton 240 or BASH 500---in case you want to add another THT down the road and put the extra cash towards the build...Or hang onto the 1300 for future projects.
I am a big fan of having much more than you need in every part of the system, but you will have to tread lightly when there is potential to nuke other lesser components.

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post #10 of 17 Old 11-01-2012, 09:13 AM
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Quote:
Originally Posted by ozziedog View Post

Do you know if the LT1300 amp that I have would be too much for the THT?
It's more than you need, but not more than you can use, just don't go silly with the volume. With that much power wiring DVC coils in series for a 16 ohm load you should still get full output and no worries.

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post #11 of 17 Old 11-02-2012, 12:03 PM
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Well, what did you decide to do?

It's time to build!!!! tongue.gif

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post #12 of 17 Old 12-30-2012, 05:11 PM - Thread Starter
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Ok, we are now past Christmas and I am going to be able to up my budget to around $1000. I still have the lt.1300 and the empty box from the A7-350, so at this point what options would everyone suggest with $1000?

Thanks
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post #13 of 17 Old 12-31-2012, 10:03 AM - Thread Starter
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post #14 of 17 Old 12-31-2012, 10:40 AM
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seems kind of pointless to waste that cabinet... How long is the port (tape measure and a flashlight)?


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post #15 of 17 Old 01-01-2013, 09:44 PM
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$1000? I would build 2 tht's or f20's. Or you could go with 4 sealed dayton 18" HO's but you would be a little over budge after materialst, how much does that amp put out? you would need 3 to 4 thousand watts for the sealed daytons, 4000 would be ideal.
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post #16 of 17 Old 01-02-2013, 02:58 PM
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There is a compromise with every design. Pick one and go with it.
Dual sealed Daytons would be sweet, so would multiple THTs. Daytons will be smaller enclosures and go lower, but will take more amplification and possibly EQ.

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post #17 of 17 Old 01-04-2013, 07:13 PM - Thread Starter
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Does anyone know if my lt.1300 would sufficiently power an UXL-18 in a sealed box? I know the UXL is rated for 1200 watts and Ed rated the lt.1300 at 1300 watts, but I hear that is BS.
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