Anybody familiar with the HiVi Q1r dome tweeter?

[dustinbagby]

I have been looking around and stumbled across this tweeter, and at the price is seems like a pretty good deal. Anybody else use this tweeter or have any insight? Seems to have a really nice flat response up to and beyond 20khz, and since it will be used in a 3 way, I will be crossing it between 3-3.5khz.

http://www.parts-express.com/pe/show...number=297-417

[Pete Basel]

Re: Anybody familiar with the HiVi Q1r dome tweeter?

I have been looking around and stumbled across this tweeter, and at the price is seems like a pretty good deal. Anybody else use this tweeter or have any insight? Seems to have a really nice flat response up to and beyond 20khz, and since it will be used in a 3 way, I will be crossing it between 3-3.5khz.

http://www.parts-express.com/pe/show...number=297-417

Zaph tests several HI-Vi tweeters and several are rather poor performers,
but he does not test the Q1r:
http://www.zaphaudio.com/tweetermishmash/

I'd look for tests of the Q1r specifically.

Did you consider the K1 which surprisingly performs quite well?

[dustinbagby]

Re: Anybody familiar with the HiVi Q1r dome tweeter?

I will take your word for it (as well as Zaphs). I was hesitant since I had not heard any reviews or of anyone using it at all. I have been considering so many tweeters, my mind is starting to hurt. I think I am going to go with the RS28A, as suggested by my trusted advisor, but have been considering the Vifa DX25, the Vifa XT25, Fountek NeoCD1.0, Beston RT002A, just to name a few.

And could someone tell me, are the Dayton RS28F and the Usher 9950-20 not the same tweeter, minus the metal grill? I guess the impedance is different, however they look almost identical to me. Same original manufacturer maybe? Im guessing one of you guys can answer that question.

[johnnyrichards]

Re: Anybody familiar with the HiVi Q1r dome tweeter?

If you are crossing that high, I would recommend one of the smaller form factor tweeters. The XT25SC90 is a good one. Crossing that high and spending money on the RS28 is throwing away a lot of potential - but it is a very good tweeter.

I used the K1 this last spring and found it to perform surprisingly unwell. YMMV.

[Jeff B.]

Re: Anybody familiar with the HiVi Q1r dome tweeter?

If you are crossing that high, I would recommend one of the smaller form factor tweeters. The XT25SC90 is a good one. Crossing that high and spending money on the RS28 is throwing away a lot of potential - but it is a very good tweeter.

I used the K1 this last spring and found it to perform surprisingly unwell. YMMV.

I agree Johnny - on both the RS28 and the HiVi.

[dustinbagby]

Re: Anybody familiar with the HiVi Q1r dome tweeter?

Jeff, how about the SB used in the Sopranos, or this one:

http://meniscusaudio.com/sb-sb26stac4-p-1171.html ?

I like the look of a larger faceplate. Just a preference there. Once decided I will hopefully be ordering the rest of the drivers I need in a couple weeks and start making some sawdust.

[Jeff B.]

Re: Anybody familiar with the HiVi Q1r dome tweeter?

Jeff, how about the SB used in the Sopranos, or this one:

http://meniscusaudio.com/sb-sb26stac4-p-1171.html ?

I like the look of a larger faceplate. Just a preference there. Once decided I will hopefully be ordering the rest of the drivers I need in a couple weeks and start making some sawdust.

Both SB's are excellent tweeters. The SB26STAC is a nice high-end tweeter. Ulrich designed it to match-up head to head with the Revelator 9700. That's pretty high company there. I just designed a two using it and a new SB17 poly cone woofer. They make a great combo. I sent you a PM, by the way.

[isaeagle4031]

Re: Anybody familiar with the HiVi Q1r dome tweeter?

another to consider is the Tang Band 28-537sh. Very nice and a nice price as well.

[carlspeak]

Re: Anybody familiar with the HiVi Q1r dome tweeter?

I ran some BB tests on the subject tweeter a few years back as it was being considered as a replacement for one of the classic dome tweeters develped, the AR3a 3/4 inch dome. Attached is repoart on those tests. While it didn't measure up to the stellar AR3a original, it was used as a replacement for a few years until recently.

[Pete Basel]

Re: Anybody familiar with the HiVi Q1r dome tweeter?

I will take your word for it (as well as Zaphs). I was hesitant since I had not heard any reviews or of anyone using it at all. I have been considering so many tweeters, my mind is starting to hurt. I think I am going to go with the RS28A, as suggested by my trusted advisor, but have been considering the Vifa DX25, the Vifa XT25, Fountek NeoCD1.0, Beston RT002A, just to name a few.

And could someone tell me, are the Dayton RS28F and the Usher 9950-20 not the same tweeter, minus the metal grill? I guess the impedance is different, however they look almost identical to me. Same original manufacturer maybe? Im guessing one of you guys can answer that question.

Consider that you are designing a 3-way with a crossover around 3 to 3.5 K, you don't need a driver with so much low end capability and you can afford to use a smaller tweeter for better dispersion if that interests you at all. What order networks are you planning for? 3 to 3.5 K first order might require a tweeter with good low end. Center to center spacing is important when you cross that high, have you considered a small format tweeter?

[Pete Basel]

Re: Anybody familiar with the HiVi Q1r dome tweeter?

I'm considering this SB SB26STCN-C000-4:
http://www.madisoundspeakerstore.com...weeter-4-ohms/

And have used this in the past:
http://www.madisoundspeakerstore.com...-dome-tweeter/

Linkwitz has also used the SEAS in his latest design.

Or a ring radiator:
http://www.parts-express.com/pe/show...umber=264-1014

I'm curious about this tweeter but am also concerned about sensitivity:
http://www.madisoundspeakerstore.com...-dome-tweeter/

[Wolf]

Re: Anybody familiar with the HiVi Q1r dome tweeter?

I'm curious about this tweeter but am also concerned about sensitivity:
http://www.madisoundspeakerstore.com...-dome-tweeter/

According to the old plot Darren took in PE's lab, the MDT12 has a suckout at the bottom of its passband, and is harder to use much below 3kHz.

I would look at the ND28F-6 before the MDT12.
Later,
Wolf

[Pete Basel]

Re: Anybody familiar with the HiVi Q1r dome tweeter?

Good to know Wolf was the plot posted here on the forum?

Morel's curve does not show this, wonder if he flush mounted it?
http://www.parts-express.com/pedocs/...ifications.pdf

I also would not expect a suck out with a non-chambered tweeter of decent design.

ND28F-6 has very low sensitivity as I recall. Zaph's curves show it to be around 85 dB whereas
most others fall around 90 dB, 5 dB is a huge difference. The weak motor does not provide
enough damping and that causes the huge peak at resonance.

[Jeff B.]

Re: Anybody familiar with the HiVi Q1r dome tweeter?

I'm considering this SB:
sb-acoustics-sb26stcn-c000-4-tweeter-4-ohms

And have used this in the past:
http://www.madisoundspeakerstore.com...-dome-tweeter/

Linkwitz has also used the SEAS in his latest design.

Or a ring radiator:
http://www.parts-express.com/pe/show...umber=264-1014

I'm curious about this tweeter but am also concerned about sensitivity:
http://www.madisoundspeakerstore.com...-dome-tweeter/

Pete, I used the SB26STCN-4 in the Sopranos, and I would consider it a best-buy in its price range. Small, light weight, neo magnet with a short waveguide. It has very low distortion, pretty linear response (rises a bit in the top octave, but that's not a real sin), and a 93db sensitivity. I foundf it to measure and sound very nice, especially for the price.

[Thezeek]

Re: Anybody familiar with the HiVi Q1r dome tweeter?

These do not measure the best but they do sound good in the Jim Griffin transmission line speakers crossed at 3K. The price has gone up on them but I got mine for $5 each. Just thought I would through them in the mix.
http://www.parts-express.com/pe/show...number=297-408