Wednesday, August 05, 2009

Winslow Burhoe's Silent Speakers

Micha Schattner and Herb Singleton, both frequent attendees of the Boston Audio Society, told me about Winslow Burhoe's Silent Speakers. Herb said, "I can't believe how much bass he gets out of them". Herb does not exaggerate.

Micha said today, "I think they are incredible" and as we chatted I simply went online here, to Burhoe's site, and pre-ordered them with paypal, my favorite money hose and spigot.

Yes, I bought without hearing, on reputation alone.

Soon, perhaps, we will see (or hear) what these are all about, so expect an update, eventually. Perhaps to hasten the arrival of the speakers all the way from Weston, MA (practically the next town over from where I live) I will let Mr. Burhoe know about the great free advertising on this page.

12 comments:

Anonymous said...

The web site says temporarily out of stock. Hope this isn't vaporware.

Bob Crowley said...

These are made to order, and offered at a third off for prepayment. Winslow contacted me immediately, thanked me for my order, and said he would get started on it. So I guess he keeps none in stock, which is consistent with what you read.

Anonymous said...

looks like a transmission line design 3 way. If so they work amazingly well for the bass which seems deeper and smoother than most designs if care is taken with the choice of the driver and box size. Sounds like it is well done. The driver is usually smaller than you would think for a big box. Probably there are a lot of baffles inside and lots bracing. These boxes are likely to weigh a lot.
N1IPP

Anonymous said...

On second look it looks to be a 2 driver system. I would like to see a better picture of the speaker. I made a few of these back in the seventies that were 2 way systems that sounded really good. The box extends the low frequency component of a really good full range driver and the treble is enhanced by a tweeter. N1IPP

Bob Crowley said...

It is a 2 way. The woofer is coupled very closely to the floor which makes the floor part of the "horn". That's its most unusual feature, I have been told. The other feature is the claimed "silent" operation of the woofer, with no airy "woosh" like many subs have. We'll have a listening session, sometime in September. You will have to stop in when that happens.

Anonymous said...

Just curious what the cross-over frequency is and the roll-off? The picture is not particularly clear. Is that a dome tweeter I see?? N1IPP

Bob Crowley said...

I don't know and I don't have these speakers yet. You should go to his website and see if the info is there or ask the maker.

Anonymous said...

I went to the website and th crossover is apparently at 1650 hz. with a steep rolloff of 24db/octave. The box is much smaller than I would have thought and the box is very heavy at 30 lbs for something that is only 13"x 9" by 22-25". That would indicate a lot of bracing. Burhoe discounts the transmission line design which I do not agree with since there are some strong similarities with both of these designs. The ports on both of these designs appear to me to work about the same. Both designs use essentially full range drivers rolled off at the upper end for the woofer. Tuning the port properly is essential. These speakers are smaller than I would have thought though. I like the placement of the drivers which means there are probably no flat reflecting surfaces in the whole box.(A good thing!) I also do not agree with his analysis that most people do not hear above analog horizontal oscillator freq. and below 30hz. I would agree that sensitivity is low with most people but it is not non-existent. Will be interesting to hear these in operation. N1IPP

Bob Crowley said...

Time after time, visit after visit, golden ears, mud ears, kids ears - nobody in the lab hears the horizontal oscillator - yet there it is on the screen, and the mic is picking it up.

Below 30, that's where the fun starts. Just go to East LA to find out.

Anonymous said...

I seem to remember you hearing Hor. oscilators when I could not. Sometimes though even now I can hear them but the sound seems to be very directional when before it was not so much. I find a lot of noises below 30 hz to be disturbing. Someone in our neighborhood has some audio system that is producing lots of sub 30hz audio and it does disturb me. N1IPP

slefty said...

Any update?

Bob Crowley said...

These are fantastic. The smoothest I have heard, with very resounding bass and excellent highs. We finished our review and will eventually put these up for sale.