Quite right Roadie.
I did get the essence of Richard’s comment of course - just thought a little wind-up was appropriate !
It’s a bit like speakers really - if your amp pushes out 20 watts, best get speakers that can handle 30 watts, just in case. Err on the side of caution always.
Quite right, assuming you mean a 20 watt R.M.S (root mean squared) amp and 30 watt R.M.S. speakers.
If it’s a cheap Bluetooth speaker from China that boasts 300 watt peak output then the speakers in it are probably around 2 watts.
Good old IHFM Peak Music Power. (IHFM = Institute of High Fidelity Manufacturers)
We used to reckon it was a measure of how big was the solitary large reservoir capacitor in the tiny el-cheapo power supply. The rating is for a peak-to-peak sine wave for one cycle at 10% distortion. PMP power has a number eight times the RMS power, for the identical heating capability. And the True RMS power rating also shows how well the mains transformer can continue to deliver the required power to the amps, unlike the IHFM PMP.
So if you put a single 300W IHFM PMP pulse into the tiny speaker rated at 300W, it should not melt the voice coil. BUT apply 37.5W RMS to it for more than a few seconds and the chances are it will catch fire, if it first doesn’t bash itself to pieces on the end stops.
For some classic early technobabble and a bit of background on it see the wiki on blinkenlights
We had a carefully edited variation (sorry can’t remember the detail it was brilliant) of the usual warning notice (below) over one of our bigger multideck flatbed machines (long sleeves and ties were banned), and a big pair of scissors hung in a prominent place.
“ACHTUNG!
ALLES TURISTEN UND NONTEKNISCHEN LOOKENSPEEPERS!
DAS KOMPUTERMASCHINE IST NICHT FÜR DER GEFINGERPOKEN UND MITTENGRABEN! ODERWISE IST EASY TO SCHNAPPEN DER SPRINGENWERK, BLOWENFUSEN UND POPPENCORKEN MIT SPITZENSPARKEN.
IST NICHT FÜR GEWERKEN BEI DUMMKOPFEN. DER RUBBERNECKEN SIGHTSEEREN KEEPEN DAS COTTONPICKEN HÄNDER IN DAS POCKETS MUSS.
ZO RELAXEN UND WATSCHEN DER BLINKENLICHTEN.”
^^^^^^^
Good morning all
I have a confession to make
I bought this
https://www.sony.co.uk/electronics/av-receivers/str-dh190/specifications
it’s the nearest I could get (at the price point) to a retro tuner amp
Now I’ve had it confirmed that the LEAK DELTA 75 can be restored to fully working, I can get that in to the repairers at my leisure and utilise the new Sony unit with the LEAK speakers and turntable. I ended up getting it from Amazon for the princely sum of £147 prime delivered, I think that’s a bargain!
I bought it as it has a proper phono input with a built in phono offset so cartridges can be tuned to the unit for optimum performance. Handily, it also has Bluetooth (albeit not the latest version) FM tuner with presets, direct audio which I presume is tone defeat, BAL/BASS/TREBLE control via the supplied remote plus several other RCA phono inputs AND tape in/out (good for my AKAI reel to reel) front auxiliary input, headphone out too! A lot of features for not a lot of money! Oh, also selectable A+B speaker outs
It also has a metal fascia and cabinet which is nice to have.
Barrie
You going all ‘modern’ on us now Barrie ?
Hi Chris!
At the price I paid, just thought it was worth a punt? It’s about as retro as I could go for this type of thing, no hdmi, co-axial,optical etc just good old RCA Phono now if the speaker connections had been banana sockets, then WOW! But alas not, other equipment I have is either the same spring type speaker connections or 2 Pin DIN anyway.
Barrie
Nice piece of kit Barrie, well worth the money I’m thinking!
PS: What the heck is “Bluetooth”? Is it what you get when you stand outside in the freezing weather with your mouth open?
Hi Roger,
”PS: What the heck is “Bluetooth”? Is it what you get when you stand outside in the freezing weather with your mouth open?
”
Best explanation I could find at short notice
Like most normal people, you probably haven’t invested too much of your valuable time pondering the origins of the term “Bluetooth.” As it turns out, the ubiquitous wireless technology’s name has nothing to do with being blue or tooth-like in appearance and has everything to do with medieval Scandinavia.
Harald Bluetooth was the Viking king of Denmark between 958 and 970. King Harald was famous for uniting parts of Denmark and Norway into one nation and converting the Danes to Christianity.
So, what does a turn-of-the-last-millennium Viking king have to do with wireless communication? He was a uniter!
In the mid-1990s, the wireless communication field needed some uniting. Numerous corporations were developing competing, noncompatible standards. Many people saw this growing fragmentation as an impediment to widespread adoption of wireless.
One such person was Jim Kardach, an Intel engineer working on wireless technologies. Kardach took on the role of a cross-corporate mediator dedicated to bringing various companies together to develop an industry-wide standard for low-power, short-range radio connectivity.
At the time, Kardach had been reading a book about Vikings that featured the reign of Harald, whom he viewed as an ideal symbol for bringing competing parties togethe.
Bluetooth was borrowed from the 10th-century, second king of Denmark, King Harald Bluetooth; who was famous for uniting Scandinavia just as we intended to unite the PC and cellular industries with a short-range wireless link.
The various interested parties eventually came together to form the Bluetooth Special Interest Group, which developed the agreed-upon standard we know and love today. “Bluetooth” was originally meant to be a placeholder, but the name had already taken off in the press and thus remains around today.
The millennium-old shout-out doesn’t end there. The Bluetooth logo—that cryptic symbol in a blue oval printed on the box your phone came in—is actually the initials of Harald Bluetooth written in Scandinavian runes.
Barrie
Wow! An explanation of technology AND an interesting piece of history! Thanks Barrie!
Couldn’t have quoted any of the details but I’ve heard the story before. Didn’t know about the symbol being his initials though. Always thought it was the MOT station sign turned 90 degrees.
Not too far off Paul
Rune alphabet, not quite the same
Barrie
Never noticed that before Roadie, nice spot !
Had a bit of a reconfiguration in the HIFI stand
Packed the AIWA mini compo 22 stack away, along with the behringer equaliser, shuffled the shelves around to accommodate the new Sony 2 channel amp/tuner, which is arriving tomorrow. I’ve also dug out my old Sony DVD/CD player (only for CD’s) it’s that old it only has Scart and RCA phono connections! Brought the AKAI 4000DS out of retirement and put that into the stand as well
When the new amp arrives, should just be a case of connecting the phono plugs onto the amp, plugging into the mains, connecting speakers and it’s good to go! All I know is, the amp will be with me tomorrow before 21.00hrs, so not holding my breath for an early delivery
Will post up more pics when installed but for now, here is the stand minus the amp!
Barrie
That looks really good 
I use a Pioneer Blu Ray for CD playback (bdp-lx71 I think) as it has awesome DACS that take a lot of beating in a CD player.
You folk are making me think that I need to get my pioneer PL1000 tangential tracking turntable sorted out - serviced - and back in use!
It had 2 parallel runners to track the arm across the record. Cost a fortune when I got it - but I was young and impressed by such things c38 years ago and also single.
About 400 notes on the bay of e now.
Very very tasty bit of hifi p0rn though.
Come on, you know you want to! Just in case and if you don’t have much info on it, here’s a link to some good knowledge.
https://www.vinylengine.com/library/pioneer/pl-l1000.shtml
Barrie
Oh yes, that does indeed look like the dog’s b******s.