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Vifa TC9FD-18-08 3-1/2" Full Range Paper Cone Woofer
I plan on using two of these in a MTM design. In order to cross them over to the tweeter at 6K hz., would I use an inductor value based on the 8 ohm of each speaker, or the 4 ohm value of the two wired together?
You will want to use the impedance of both together for this type of application.
Date published: 2014-04-04
i have a design on using 2 of these in a center channel with a tweeter (part #279-002) crossed at 12.5kHz and i would like a tuning frequency in the 80Hz - 100Hz range also my design is to have both the midwoofers (this 3-1/2") sharing the same airspace
I would recommend .32 cubic feet for both with two 1.5" diameter, 3" long ports for a tuning frequency of 82 Hz.
Date published: 2014-02-05
Good choice paired with a small sub for a boom box?
I'm looking to build a boom box and was thinking of using 2 of these per side along with a small 8" or so sub woofer powered by the Dayton mca2250e 2.1 plate amp. Thoughts? Good choice? Would this combination even work?
Yes that combination would work and work well.
Date published: 2013-10-15
Is this speaker magnetically shielded?
Unfortunately this woofer is not shielded.
Date published: 2014-02-05
Wondering if a pair of these would match well with a PAM8610 amplifier for a portable bluetooth speaker box?Thanks!
Yes that would be a good match for that amplifier.
Date published: 2013-09-05
What kind of spl would i get if i had two in a mtm design?
Your sensitivity always goes up by 6 dB when you wire two woofers together in parallel. Two of these in an MTM will have an SPL of about 89.5 dB.
Date published: 2013-01-14
Suitable for sealed enclosure?
I have been considering this speaker for a satellite cube project that will be used mainly for HT and music listening. I ran some calculations in a box modeling program based off the thiele and small parameters and the result was negative, which was kinda odd. I am trying to achieve the flattest frequency response possible because these will be used for music listening and I prefer a balanced sound. So my question is this, is this speaker better in an open baffle application and if not what would be the recommended sealed box volume? Also, how accurate is the advertised watts that this speaker can handle? I am planning on pairing two of them with a soft dome tweeter(rated @ 50 wpc rms, 100 wpc max) in each configuration, which will be powered with 120 wpc rms in HT( DolbyII) and 140 wpc in stereo mode. So according to the specs the combined rms watts for each configuration should be 130 and 220 max. I would prefer feedback from someone with direct knowledge of these questions and/or direct experience with the speakers.Thanks
These woofers are better implemented in a vented enclosure however it depends on how low you really need to go with them. With an Fs at 125 Hz, they are not designed to play very low and will work best with a subwoofer. The power handling is accurate although this is only taking into consideration where they are crossed over on the low end. As long as they arent doing much below 120 Hz they will handle 30 watts just fine. Most systems like this will never send full RMS power to the satellites simply because the subwoofer is doing 95% of the work. If you plan on mating these with a sub, I would go ahead and throw them in a small sealed enclosure.
Date published: 2013-08-25
I'm planning to put these in a small set of ported computer mini monitors. Any recommendations on the ideal cabinet specs and port length?
There are many response curves and alignments possible - the best thing to do is plug the specs into an online "speaker box calculator". You can then play with port diameter, length and boxes to see how deep and flat you an make your creation.
Date published: 2014-03-29
What size disconnect terminals should I use?
I will be buying 50 of these for a line array and obviously having the right sized terminals would be very helpful. Thanks for the help!
If the photo is an actual representation of the driver in question, then one terminal is 3/16 and the other is 3/32.I checked the data sheets, as you likely did. I found no better way than to measure the on screen width of the driver mounting flange across the width and reverse engineer the dimensions for the terminals. I would have to measure one physically to be more certain than that.
Date published: 2012-04-24
I found two different spec sheets.
I found two different spec sheets. Is this full range 5w or 50w?http://www.tymphany.com/files/TC9FD-18-08%20Rev1_0.pdfhttp://www.mx-spk.com/image/TC9FD-18-08
Looks like 50W, the spec sheet should be linked on the right hand side of the catalog page.
Date published: 2012-04-21
Has anyone worked out a notch filter for the bump at about 8.5k ( per Zaph)? Thanks
I had a similar fostex speaker. The notch at that frequency turned out to be baffle compression, widening the hole around the driver or mounting the driver behind the baffle should fix it.
Date published: 2012-01-13
does the high end roll off as weak?
The price really makes me want this one to work out for me, however the 15khz(+) cut off is hold me back. Honestly, would I be much more satisfied if i dish out the extra $17 for the Peerless 830986?
I guess i am getting deaf all cheap 3.5 in drivers need a good x'over and a tweeter for me. I use these with a 4 k xover in the poly type 3.5 [love them ]open accurate but realistically a small cone cannot move the air accurately at 15k with out beaming or below 150 hz with out distorting or loosing contact with the air. they came with 45 uf installed to block low bass. snipped it off made a 12db xover and 2 good tweeters L-paded and a dayton150 amp,mated the speakers below the 24 in pc monitor where the drivers sound field was best then mounted them, lip sync is awesome and the dual 18 in sub in the den with main's shake the icing off the cake
Date published: 2013-12-23
PE specs differ from Spec sheet
I've come to trust PE specs as I am a usual buyout costumer (and those generaly don't have spec sheets) but for this driver I'd like to know why the specs differ so much from the spec sheets. Also, wich ones should I use?
The Vifa spec sheet (http://www.parts-express.com/pdf/264-1062s.pdf) is correct. I've notified our web team, and the specs we list on this page will be corrected shortly.
Date published: 2011-11-16