A lot of tweeters have had the 1.5-1.8k shelf. That is usually just a seal problem, but not an automatic notice of a bad tweeter. The magnitude is very close from 900Hz up, and also not that different than other tweeters I've seen below there.
Not deal of the day, but the Dayton Audio PM180-8 is on sale for $60. 185 in stock. (Thanks to @PWRRYD for pointing this out in another thread.)
During Pandemic Inflation they went up to $129, back down to $109 and it now states "normal" price is $99.
During that time, they also went on clearance and ran out of stock and it was suggested that they may be discontinued - but it did indicate an estimated "back in stock" date at which time they did become available again.
I am pretty sure they are now being discontinued, in case anyone wants to grab some while they are available (and ridiculously cheap).
$60 is a good deal for the PM180. I own a pair of them and find it to be a bit of an oddball. Very low distortion and high sensitivity but a couple of FR anomalies starting around IIRC 2k Hz. The datasheet hints at this - it shows a dip at 2.2k and another around 3.3k. I did some high resolution (e.g. 50 Hz or less) outdoor measurements and these are actually pretty deep and might be cancellation from a reflection or something. Without those the driver would be amazing, but these are right where you would like to cross it over in a 2-way. I assume that the cone is super thin, meaning that the box will need to be fully stuffed to reduce re-radiation of the backwave via the cone. No vented alignments in that case... but it could make for a killer midrange.
I am building a speaker with it now in an old pair of PE veneered cabinets, combining it with the AMTPRO-4, which is another odd driver. Also has low distortion but too large to be a tweeter and FR does not extend as low as e.g. GRS PT5020. Since I can cross over the AMTPRO-4 around 1.2k Hz or lower the FR issues of the PM180 are not of concern. Eventually I will also use a top mounted tweeter. In the meantime I hope to use it in a special project for the PE SDC covering only 300-3k Hz or so, which is right in the wheelhouse for those two drivers. This will be in combination with the Cerwin-Vega 12" coax build that I am pulling together now, fingers crossed.
If I didn't already have 5 or 6 pairs of nice tweeters on the shelf, I would jump on those. I used the NE19 silk in my first solo design. I really like the sound of that tweeter. It almost went low enough to meet the 8" MCM aluminum woofer I paired it with!
Ya, I would have snapped up a bunch of those $4.48 ($3.99 after rebate) shelves, but I can't fit 8ft shelves into my Nissan Versa hatchback. Too long; 6 ft is the max that I can handle. Every once in a while, Menards picks up a load of factory rejected 12x48x.75 shelves and sells them as "Value shelving" for $2.48 each. But the ones with the "Value Shelving" label are sometimes sold out or hard to find, but I have found that if you are persistent and keep digging around for a while in the shelving area, you can usually find some.
@4thtry said:
Ya, I would have snapped up a bunch of those $4.48 ($3.99 after rebate) shelves, but I can't fit 8ft shelves into my Nissan Versa hatchback. Too long; 6 ft is the max that I can handle.
I’ve taken my cordless circular saw with me and cut boards to size to fit… in the parking lot - ha
I probably wouldn't think twice having boards hanging a couple feet out the back of my hatch/trunk if it was reasonably close to home. Though I'd point them in the passenger foot well, away from me, in case of being rear-ended... Or do the boring thing and cut em in half like they are saying I guess (no fun).
@DrewsBrews said:
I probably wouldn't think twice having boards hanging a couple feet out the back of my hatch/trunk if it was reasonably close to home. Though I'd point them in the passenger foot well, away from me, in case of being rear-ended... Or do the boring thing and cut em in half like they are saying I guess (no fun).
There's no way to turn of the open door alarm on my Prius. It drives me crazy.
Hmm. I bet the switch is in the latch. IDk if it would work on a prius specifically, but I've heard of folks tieing rope to the latch loop on the hatch and using a screw driver or something to push the rope into the latch, locking the rope in and holding the hatch down with the rope. If the latch is engaged that might turn off the chime. I may have tried it once.. don't remember. Just one of those bits of knowledge I tuck away in case I get in a bind.
For me though I've upgraded to roof rack if I'm too lazy to hitch up the harbor freight trailer. That trailer has come in so handy for many years. For a few hundred bucks it turns your car into a pickup truck with an extremely low, easy to load, deck height. It takes all the abuse of hauling instead of roughing up an expensive truck or the interior of your car.
Gotta be careful with those 4' Menards shelves. I buy a lot of them - most of my builds these days use - and noticed sometimes they have 11-1/4 widths, and sometimes 11-1/2. I have also seen 5/8 material mixed in. It is varying quality PB sometimes. All in all, well worth the coin with some pickiness.
Use one of their tape measures to be you get the right size and go through the stacks to pick to good ones. I got home with some one time and one of the boards had a 1/32" rabbit on one edge. I should have looked closer at the store.
Comments
A lot of tweeters have had the 1.5-1.8k shelf. That is usually just a seal problem, but not an automatic notice of a bad tweeter. The magnitude is very close from 900Hz up, and also not that different than other tweeters I've seen below there.
InDIYana Event Website
If I recall correctly, the Seas DXT tweeters I used many years ago had a similar looking impedance curve.
Sehlin Sound Solutions
Not deal of the day, but the Dayton Audio PM180-8 is on sale for $60. 185 in stock. (Thanks to @PWRRYD for pointing this out in another thread.)
During Pandemic Inflation they went up to $129, back down to $109 and it now states "normal" price is $99.
During that time, they also went on clearance and ran out of stock and it was suggested that they may be discontinued - but it did indicate an estimated "back in stock" date at which time they did become available again.
I am pretty sure they are now being discontinued, in case anyone wants to grab some while they are available (and ridiculously cheap).
$60 is a good deal for the PM180. I own a pair of them and find it to be a bit of an oddball. Very low distortion and high sensitivity but a couple of FR anomalies starting around IIRC 2k Hz. The datasheet hints at this - it shows a dip at 2.2k and another around 3.3k. I did some high resolution (e.g. 50 Hz or less) outdoor measurements and these are actually pretty deep and might be cancellation from a reflection or something. Without those the driver would be amazing, but these are right where you would like to cross it over in a 2-way. I assume that the cone is super thin, meaning that the box will need to be fully stuffed to reduce re-radiation of the backwave via the cone. No vented alignments in that case... but it could make for a killer midrange.
I am building a speaker with it now in an old pair of PE veneered cabinets, combining it with the AMTPRO-4, which is another odd driver. Also has low distortion but too large to be a tweeter and FR does not extend as low as e.g. GRS PT5020. Since I can cross over the AMTPRO-4 around 1.2k Hz or lower the FR issues of the PM180 are not of concern. Eventually I will also use a top mounted tweeter. In the meantime I hope to use it in a special project for the PE SDC covering only 300-3k Hz or so, which is right in the wheelhouse for those two drivers. This will be in combination with the Cerwin-Vega 12" coax build that I am pulling together now, fingers crossed.
Pretty heavy discount. No sure why they came out with this mid-woof in the first place. Maybe to introduce the new cone material. Probably pretty good though.
https://www.madisoundspeakerstore.com/approx-5-woofers/scanspeak-15w/8434t00-phenomax-5.5-midwoofer/
What a deal!
https://www.parts-express.com/RESTOCKED-Dayton-Audio-CE65W-8-2-1-2-Shielded-Extended-Range-Driver-8-88-285-143?quantity=1
Surely that's for all six?
https://www.walmart.com/ip/JBL-Tune-215-TWS-Pocket-Friendly-True-Wireless-Bluetooth-Earbuds/102344685
$ 19 jbl headphones. They sound good for the money.
I imagine so, with regular price being $8.50. I would call them to verify though if serious about the purchase.
InDIYana Event Website
An interesting mix here, some small discounts and a few pretty deep discounts... https://www.parts-express.com/promo/woofer-sale
"Beast nipple" and a few others..
https://parts-express.com/Peerless-XT25BG60-04-1-Dual-Ring-Radiator-Tweeter-264-1012?quantity=1
https://parts-express.com/Dayton-Audio-RS150P-8A-6-Reference-Paper-Woofer-8-Ohm-295-573?quantity=1
https://parts-express.com/Peerless-NE25VTS-04-1-Silk-Dome-Tweeter-264-1034?quantity=1
https://parts-express.com/Peerless-830657-6-1-2-Paper-Cone-SDS-Woofer-264-1088?quantity=1
https://parts-express.com/promo/april-fools-day-sale
Always wondered about that NE25VTS-04
Used it many years ago, was pretty nice.
If you're interested, Zaph tested all the NE25XXX variants back in 2010. It's in his blog area: zaphaudio.com/blog.html
If I didn't already have 5 or 6 pairs of nice tweeters on the shelf, I would jump on those. I used the NE19 silk in my first solo design. I really like the sound of that tweeter. It almost went low enough to meet the 8" MCM aluminum woofer I paired it with!
I am drivered up or I would order a pair of those XT25, they are phenomenal tweeters.
Well, I is an idiot and ordered a pair anyways. Got to thinking they very well could be NLA before too much longer.
Yay! More LEDs!
Slim pickin's these days.
I noticed the Menards shelving boards are $4.48 for an 8ft section currently. Send in the rebate and get another $0.49 ea back.
Man those gotta be so nice to deal with compared to wrestling a 4x8' section.
https://www.menards.com/main/storage-organization/shelves-shelving-units/shelving-boards/dakota-trade-unfinished-square-edge-shelf/shelf34117596/p-1444428261648-c-5702.htm
I used those shelving boards for the project I'm bring to Indy. Like you said so much easier to handle.
Ya, I would have snapped up a bunch of those $4.48 ($3.99 after rebate) shelves, but I can't fit 8ft shelves into my Nissan Versa hatchback. Too long; 6 ft is the max that I can handle. Every once in a while, Menards picks up a load of factory rejected 12x48x.75 shelves and sells them as "Value shelving" for $2.48 each. But the ones with the "Value Shelving" label are sometimes sold out or hard to find, but I have found that if you are persistent and keep digging around for a while in the shelving area, you can usually find some.
I’ve taken my cordless circular saw with me and cut boards to size to fit… in the parking lot - ha
Just buy them, take em to your car, then snap them in half like a chicken bone! lol
I probably wouldn't think twice having boards hanging a couple feet out the back of my hatch/trunk if it was reasonably close to home. Though I'd point them in the passenger foot well, away from me, in case of being rear-ended... Or do the boring thing and cut em in half like they are saying I guess (no fun).
There's no way to turn of the open door alarm on my Prius. It drives me crazy.
Hmm. I bet the switch is in the latch. IDk if it would work on a prius specifically, but I've heard of folks tieing rope to the latch loop on the hatch and using a screw driver or something to push the rope into the latch, locking the rope in and holding the hatch down with the rope. If the latch is engaged that might turn off the chime. I may have tried it once.. don't remember. Just one of those bits of knowledge I tuck away in case I get in a bind.
For me though I've upgraded to roof rack if I'm too lazy to hitch up the harbor freight trailer. That trailer has come in so handy for many years. For a few hundred bucks it turns your car into a pickup truck with an extremely low, easy to load, deck height. It takes all the abuse of hauling instead of roughing up an expensive truck or the interior of your car.
Same on my (Hybrid) Highlander. I've driven pretty far with the hatch ajar just a bit with boards in the back and the alarm going off the whole time.
Gotta be careful with those 4' Menards shelves. I buy a lot of them - most of my builds these days use - and noticed sometimes they have 11-1/4 widths, and sometimes 11-1/2. I have also seen 5/8 material mixed in. It is varying quality PB sometimes. All in all, well worth the coin with some pickiness.
Yeah it's Menards so....
Use one of their tape measures to be you get the right size and go through the stacks to pick to good ones. I got home with some one time and one of the boards had a 1/32" rabbit on one edge. I should have looked closer at the store.
Most cars have a pin switch, pull it and short the wires problem solved, it will see the hatch as closed.