Yves,
I may have another chance: change the wife 😉.
No, no, no. She is the best thing that happened to me so this is not a viable option.
The chance I'm talking about is I haven't finish my amp yet. I still have time to persuade my wife.
What options do I have to cover the plywood? I guess I could paint it. How about to cover with some type of fabric. What do I put in front of the speaker?
I found some 10" (not 12") speakers on ebay and not Philips, but they are fullrange. Will it work? Btw the link you sent me was for 6 Ohms, my opt is for 8 ohms.
Also you are talking about tweeter with 0.68 uF in series. I don't see it in the pictures. Did you added later?
Instead of plywood can I use 3/4" granite? Granite is accessible to me. I saw a speaker made of granite but not open baffle.
Sorry for so many questions. I really want to go this route but I don't know much about speakers.
Alex
I'm going to have to agree with Rick... even if the ~88 dB efficiency is accurate and you don't listen too loud... they do spec a minimum of 15W.
This is an older version impedance curve (hopefully they have flattened with the subsequent revisions)... but. SE triodes tend to like benign impedance curves. This chart shows a 38 ohm peak at 1.5k, that should cause a peak in the response when mated with your amp, and from that peak up phase angle is >45 degrees and actually crossing 90 just before 20k (when the phase hits 90 an amplifier is incapable of outputting any power into the load (P=V*A*cos(phase)). The least you can say is your amp probably won't be at its best in the treble.
dave
You're on the right track. I'm also looking for Cerwin-Vega VS-120's or 150's.
Not quite understanding this - did she think the Philips on a board sounded best, or the Davis Vezelay?
These speakers are high sensitivity. Could I use them with my amp?
Radian - RPX-215P/B
They don't specify minimum power.
Thanks,
Alex
Radian - RPX-215P/B
They don't specify minimum power.
Thanks,
Alex
Sorry !
The Philips are much more present that the Davis even after having compensated the level (on the paper, the Davis have 5dB less SPL and this is of course the first thing you hear).
Yves.
15" woofer plus horn
Your Radian link looks like another version of what I know as the Peavey SP4. Look at this link http://www.peavey.com/assets/literature/manuals/sp4_specs.pdf. I own the SP2-XT (a previous version, 1998), only one 15" woofer. Plenty of bass for J S Bach organ records. 101 spl for SP2-XT that I bought for $300 each, 98 spl at 1 watt for 2004 later SP2, 100 for SP4. As I said they produce a lot of music for not many watts. I'm impressed the 2004 spec doesn't just have frequency response at 1 and 10 watts, they have 2nd and 3rd harmonic distortion plots on axis. I don't know how this compares, but they sound really good. I tested them on a piano CD before I bought them, Beethoven Sonatas by P. Serkin. Piano, particularly the high notes, is hard to do right at volume approaching reality. They have an impedance peak near the crossover, plotted, I don't know how this interacts with tubes. I intend to re-cap the ST70 and try it this fall, the electrolytic main caps were installed in 1973 and that is about expected life.
Your Radian link looks like another version of what I know as the Peavey SP4. Look at this link http://www.peavey.com/assets/literature/manuals/sp4_specs.pdf. I own the SP2-XT (a previous version, 1998), only one 15" woofer. Plenty of bass for J S Bach organ records. 101 spl for SP2-XT that I bought for $300 each, 98 spl at 1 watt for 2004 later SP2, 100 for SP4. As I said they produce a lot of music for not many watts. I'm impressed the 2004 spec doesn't just have frequency response at 1 and 10 watts, they have 2nd and 3rd harmonic distortion plots on axis. I don't know how this compares, but they sound really good. I tested them on a piano CD before I bought them, Beethoven Sonatas by P. Serkin. Piano, particularly the high notes, is hard to do right at volume approaching reality. They have an impedance peak near the crossover, plotted, I don't know how this interacts with tubes. I intend to re-cap the ST70 and try it this fall, the electrolytic main caps were installed in 1973 and that is about expected life.
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You need the Tritrix knock down kit from Parts-Express. If youre in Canada, youre right next door. You don't need to spend any more for the the type and quality you're looking for in a set of speakers for your amp. You'd be amazed at what builders have done with these kits for a finished set of excellent speakers. Since you're a builder, seems your best bang for your buck is not losing you're money on a pair of factory builds from anybody. There must be 100+ threads
Klipsch F-2 floorstander is 95.5 dB and plays quite well with <10W amps. Smaller F-1 and larger F-3 have similar characteristics (+- 2 dB sensitivity). Some claim (and I confirmed by taking my amp to the store for comparison) they sound better than RF-52 (supposedly rerference series). All 3 Klipsch F have a bit more bass (down to 38 Hz) then the Paradigm you're looking at. In North America you can probably get a pair of F-2 for under $500.
I measured 1.6 watts output at the volume level I usually do not exceed at home in a room of close to 50 sqm. The loudest I ever dare play turned out to be still under 5 watts.
I measured 1.6 watts output at the volume level I usually do not exceed at home in a room of close to 50 sqm. The loudest I ever dare play turned out to be still under 5 watts.
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Yes, but makes sure the amp and source have hundreds of controls and indicators on them, it'll look so complicated she won't use it when you're not around 😉
Looks very nice. I may have to ask my daughter if she'd like one of these, gives me a great reason to build one
I like the pink anodize but don't have a grand-daughter to blame it on. I'm into lurid purple myself, have an empty "Annie's bunny classics" cracker box sitting next to my PC for decoration this week.
But seriously folks, The Radian 215 speaker you posted, and the Peavey SP4 that probably predated it, are both 4 ohm speakers. For tubes, probably the Peavey SP2-XT with it's 5.5 ohm minimum (8 nominal) and smooth frequency response is more suitable. The Radian has the HF driver loaded on the 15" woofer apparently, I like having an actual plastic horn to direct the sound to my ears myself. Look at that http://www.peavey.com/assets/literature/manuals/sp2xt.pdf if you have the time, lots of bar bands are flogging these off on craigslist because they are 20 lb heavier than 2004 or later ones..
But seriously folks, The Radian 215 speaker you posted, and the Peavey SP4 that probably predated it, are both 4 ohm speakers. For tubes, probably the Peavey SP2-XT with it's 5.5 ohm minimum (8 nominal) and smooth frequency response is more suitable. The Radian has the HF driver loaded on the 15" woofer apparently, I like having an actual plastic horn to direct the sound to my ears myself. Look at that http://www.peavey.com/assets/literature/manuals/sp2xt.pdf if you have the time, lots of bar bands are flogging these off on craigslist because they are 20 lb heavier than 2004 or later ones..
I went to Futureshop and listened to Klipsch RF82. To me they have an amazing sound. Futureshop don't carry F-1, F-2 or F-3. the problem is the RF82 are a little too expensive for me (~ $1600 with taxes). What other options do I have for this kind of money?
I'm still looking to build OB speakers. I found some speakers here locally but not quite what I want. They are dirt cheap but involves work on my part.
Very impressive indeed, but there are 4 ohms. My amp is 8 ohms. Now I realized I should have a 4 ohms output on my opt as well as 8 ohms. I was trying to cut on price but I only cut out on my options !
Alex
This is DIY audio, here is a pair of Peavey SP2G (modern design) 15" woofer + horn speakers, for $200, Franklin, TN. Blown tweeter driver. The tweeter drivers are still in production and are readily available from the dealer. I paid about $600 for my pair of SP2-XT's, working, and listened before I bought, too.
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You don't actually need a lot of power to drive most conventional loudspeakers. (Electrostatics are a different kettle of fish.)
I am using a pair of Quad II monoblocks (15 watts each) to drive a pair of Celestion DL8 loudspeakers, which are not the most sensitive in the world. I have been using this combination for around twenty years in a large room, and nobody has ever thought they lacked power. I enjoy organ and choral music, which is about as demanding as it gets, yet when I have measured the power at the speaker terminals it rarely exceeds one watt.
The sound, in combination with my Philips CD960 is sublime and detailed when playing a good recording, whilst the bottom end is powerful and solid.
Nigel.
I am using a pair of Quad II monoblocks (15 watts each) to drive a pair of Celestion DL8 loudspeakers, which are not the most sensitive in the world. I have been using this combination for around twenty years in a large room, and nobody has ever thought they lacked power. I enjoy organ and choral music, which is about as demanding as it gets, yet when I have measured the power at the speaker terminals it rarely exceeds one watt.
The sound, in combination with my Philips CD960 is sublime and detailed when playing a good recording, whilst the bottom end is powerful and solid.
Nigel.
I have found these speakers
Ikon Audio
It's high sensitivity and a lot of speakers plus there is a powered subwoofer.
I think these speakers should be more than adequate for my tube amplifier.
What do you experts think about these speakers?
Alex
Ikon Audio
It's high sensitivity and a lot of speakers plus there is a powered subwoofer.
I think these speakers should be more than adequate for my tube amplifier.
What do you experts think about these speakers?
Alex
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