Electrohome Single Ended Tube Amp

 This little four watt single ended tube amp was returned to me after I donated it to a yoga studio that I trained at.

It was mostly recapped by David Yee in Vancouver and since I got it back I have done the large caps and cleaned the amp up, with a new paint job, got rid of the large capacitor can added the volume pot and on/off toggle to the top.

It really is amazing how just 4 watts can really sound! I love single ended tube amps and they seem to getting harder to find. This unit came out of an old console stereo.

I will sell this little amp so hit me up if interested.

An update:

Now complete with a nice wood case for it.

KLH Model 17 Speakers Returned

This pair of KLH Model 17 speakers made their way back to me after I donated them as part of a stereo system at a yoga studio that I trained at.

These are great vintage 10" two way speakers, I originally owned these in 2017 with the original blog postings to be found here and the recap pages found here.

Very similar the Henry Kloss Advents that I have had many experiences on this blog. 

I have them paired with an Electrohome Single Ended Tube amp that I also gave to the yoga studio.

These are a great sounding speaker and well worth searching out.

 

Marsland Canadian 1200 Full Range Speakers

Today a super rare pair of 12" full range speakers were listed on a local classified site. These Marsland Canadian 1200 speakers.

I did a Google search on Marsland speakers and the only vintage ones that populate are the Imperial 1200 speakers,with a bell dome cover on the magnet.

Without a doubt, these Marsland speakers that were made in Waterloo Ontario, same place as some of my vintage Electrohome gear, are built to a quality standard that is rarely seen.

These have a huge cast basket with what I think is an Alnico magnet behind the magnet cover, I say this because if it was a ferrite magnet it would not sport the cover. The cover for the magnet seems machine made and precisely fitted.

I managed a small audition just propped up against the Audio Nirvana Baffles and was blown away by how great they sound. I feel these are best suited to a Single Ended Tube amp, as my push/pull sound flat with them.

I do not know much about Marsland and these speakers in particular as there is not much information out there on them. If you come across this post and have some knowledge, shoot me a message.

I will have to make special baffles for these as the basket profile does not fit the test baffles I have.

 

Zenith 5L29 Single Ended Tube Amp

 

Winter is coming and I finally got around to doing a bit of work on this Zenith 5L29 single ended pentode tube amp. I won this on Ebay about a year ago and it sat in storage. I finally have the time and space to work on tube amps again. 

This little guy is probably maxed out around 5-6 watts per channel. This unit comes with bass, treble, bass boost and volume. It runs two EL84, 12AX7 and a 6FQ7 with 5Y3 rectifier.

So far I just added the speaker terminals along with new RCA input jacks and CL90 inrush current limiter to bring the voltage down a bit from the wall socket. No cap work has been done on it yet.

This is a great little single ended unit and sounds great in my office with a not very efficient pair of Monitor Audio MA-9 speakers.

These are worthy little amp if you can pick one up, super easy to get up and running as a stand alone amp.

November 3, A little update, this little amp sounds fantastic and has really grown on me. I do not use the Bass Boost switch as it takes away the detail of this amp, I may just rewire this circuit out of the amp period.

Loving this amp, what more can I say.....

Audio Nirvana Super 12 Ferrite Open Baffles

Lucky me, I have been manifesting a pair of Audio Nirvana full range speakers for over one year and a pair finally landed on my lap today, locally.

These speakers are from David Dicks online site called Common Sense Audio. There one can find all the products that are single driver full range specifically for Single Ended Tube amp nuts like myself.

A friend has a had a pair of the Classic 10 Ferrite  connected to the Audio Nirvana EL34 Single Ended Tube amp, we listened to them just leaned up on the floor and I was impressed with the sound knowing full well a open baffle or a proper enclosure would make these rally shine.

I am super stoked to be writing this blog post as these play in the back ground.

I think the quest for an open baffle full range set up is nearing an end, as these play I now feel I might be selling some excess speakers.

I am glad it is near winter, cold dark and rainy in the Pacific North West as I get to loose myself in the sweet, sweet sound of a Single Ended Tube amp and this pair of open baffle Audio Nirvana 12" Ferrites!!

Finally!!!!! I think I am at the ultimate sound set up to indulge in audio ascension bliss.

Electro Voice 12 TRXB speakers

Oh my god, these Electro Voice 12TRXB triaxial showed up this week and WOW.

We were so excited to get these up and running we just mounted them in open air and sat back and listened in amazement.

These units are going into an Open Baffle that we at Speakerholic are going to start to design. These units will be awesome for our venture.

A bit more can be found here.

Beautiful on a single ended tube amp, just beautiful!!

Electrohome Lorainne 40 Push Pull EL84 tube amp

Another piece of fine audio equipment came home from the same place as the EMI 630 speakers, this 20WPC Electrohome Lorainne 40 push/pull tube amplifier.

This unit has had some previous work done to it with separate volume pots, handles on the side and feet attached to the bottom.

The 12AX7 tubes are Mullard/Amperex tubes that flash upon start up.

So I now have the best of both worlds with an Electrohome Marseilles Single Ended tube amp and this Electrohome Push/Pull.

On first impressions the Electrohome P/P is much louder and can drive all my speakers to a pretty decent decibel level where as the Electrohome SET can only push my most efficient speakers to the 98-100db level, which is plenty loud.

I was expecting more bass from the  and the bass that is there is well controlled, the mids and highs are clean and transparent along with the imaging. Where I find the biggest difference is the open and luscious mid range and highs that the Electrohome Single Ended offers up, it just can not be beat. Once the mids and highs are this good the three dimensional imaging is spot on with a single ended tube amp.

There is a fantastic write up called "Single Ended vs. Push Pull: The fight of the Century" by Eddie Vaughn, it is a good overview of both amplifiers.

Just like the analogue vs. digital, New England vs. West Coast, solid state vs. tube and single ended vs. push pull you will get diehards defending either argument.

So, where does my bias lean towards? I seem to like the pure Class A sound of a single ended tube amp more than the Class A/B of the push pull, both are great but the Single Ended just nudges out the Push/Pull with the open mid range and sparkling highs.

Altec Lansing Model 9 Speakers

I have had these speakers on the back burner all summer and finally got around to doing a large re foam job on both the woofers and the mid range drivers.

These first generation Altecs 9's are the top of the consumer range before customers went into the Santana's or even higher up the food chain to the 15's, 18's or 19's that are horn loaded.

These speakers came to me in mint condition and their oak veneer cabinets in perfect shape.

They have a large 12" woofer with a 4" mid range and a 3" tweeter, the efficiency is up there at 93db's, which suits a single ended tube amp.

Once I had the box open a replacement of the tweeter cap was an easy upgrade with a Solen 2.2uf cap and installed proper banana plugs.

These speakers are beast, not as large as the JBL CF150's but pretty darn close, the Altecs are a much better build.

The finished product turned out really well, one last thing I need to do is install the cosmetic foam ring around the woofer, I was excited to listen to them and get some pictures up first.

So the big question is how do they sound, well before I begin I have tried them on my Single Ended 4WPC tube amp and a monster Sony STR-V5 at a whopping 85WPC and they are two very different speakers.

In solid state mode at half volume these speakers rock the house to the point of shaking the wooden structure that is the my place. They are loud, but they loose there coherency, the bass gets muddled and the mid range and highs become shrill. At lower volumes they do a nice job with the solid state gear but to the limits of solid state.

When attached to the Single Ended Tube amp, Wow, pure lusciousness! These speakers are incredibly well matched with really nice full bass, like really full. The mid range images wonderfully with zero chestiness in make vocals, female vocals like Mazzy Star are pure heaven. the tweeter is spot on with crisp crisp highs. You do not miss a thing in detail with these speakers. Luscious, it is the only way to sum up the pairing of a tube amp with these speakers, this is what high fidelity is meant to be.

If you google the Altec Model 9's you will find mediocre to satisfying reviews of these speakers, I would suspect that most have only heard these through solid state gear and I understand that. Through a tube amp these are a speaker that is stunning to listen to, it is too bad that most probably listen to these through the wrong type of amplifier.

The Tannoy Oxford Gold's have always been the reference speaker that all others are measured against in my space and these can easily trump the Oxfords.

These are an absolute wonderful find and a very welcome addition to my ever so eclectic collection of speakers.



 

ESS Model 9 Speakers

A pair of ESS Model 9 speakers arrived this past week as I wanted to hear what the HEIL Air Motion Transformer sounded like with the tube amp.

I was not disappointed in the clarity and accuracy of the tweeter. It is in essence an electrostatic tweeter which creates a real "Air" about it. Paired with a tube amp and its clarity these little 2 wayspeaker with 8 inch woofers really shine. These speakers are pretty efficient so they match well with a Single Ended Tube amp.

The bass notes are a little lacking due to the cabinet size but the sound stage depth and imaging suggest that you are listening to a much larger speaker. Mid range and the highs are pleasant with absolute clarity that electrostatic drivers can do.

The cabinets in this pair are solidly built with a real oak veneer, this pair has seen some "Wabi Sabi" nicks and and bumps, but that tells me that they have been well enjoyed in the past. this pair has already seen a re foam by the previous owner.

On Solid state equipment these speakers do not shine as well as they do on the tube amp, something the previous owner never got to hear.

A new set of caps might be in order and I will open them up to see if they went cheap on the inside of the box.

Over all rating on these are as follows:

Match well on tube amp:  *****
Match well on solid state: ***
Depth of imaging: ****
Spacial imaging: ****
Build Quality: ****

Noresco NE 561 Speakers

A great find came my way in this pair of Noresco NE 561 speakers, these are Canadian made with a well revered Isophon PH2132E dual concentric Alnico 8"X12" woofer with a 3" tweeter center mounted.

This pair of speakers has a beautiful walnut veneer cabinet that was a little sun bleached but a few nice coats of Circa 1856 Naturoil brought out the best in the cabinets.

I have swapped to this oil versus Minwax as the Minwax off gasses for 48 hours and this product is all natural.

I opted to upgrade the internal speaker wire to 16 gauge and replace the tired caps with Solen Fast Caps and it has completely opened up these speakers.

It looks t me like Noresco built these speakers to Isophon specs according to the data sheet.

So how do they sound, absolutely amazing on the Single Ended tube amp. They need a little bump up in the bass region but the mid range imaging is incredible. The cone tweeter is nice and smooth without any paper harshness, almost horn like. The dual concentric driver really shines in placement of instruments and musicians, the sound from one origin source is a real joy to listen to, no wonder the Isophon PH2132 drivers are well sought after.

The efficiency is pretty high of at least 95db at one watt, which suits the tube amp perfectly.

I have become a real fan of well designed speakers that use natural roll offs and a single capacitor in the crossover, it means that the drivers were designed to work together and they are not off the shelf  drivers.

Speakers that do this the best are EPI 100's, AR 18B's these Isophon drivers, the Tannoy Oxford Gold's and the Sound Dynamic Concert 500's all have a 1st order crossover and they all sound best on a tube amp.

These Noresco'c image incredibly well as if they are a window into the music. If you are a tube aficionado these speakers should be on your list of must hear speakers. 

ADC 303AX Speakers

Acoustic Dynamics Corporation, ADC 303AX speakers came my way yesterday. This sealed 2-way speaker is right out of the early 70's and competed with the usual suspect including AR, KLH, Dynaco, Jensen and others.

 These speakers were built around CTS Alnico woofers and a CTS tweeter that also has a doped surround, before the infamous yellow phenolic ring tweeter.

The sound is very deep in the bass region smooth across the mid range and the highs were surprisingly crisp and clean with great dispersion.

Real walnut veneer cabinets are in good shape with all corners square, the usual Wabi Sabi* scratches are evident event after a light sanding and a coat on MinWax and I am fine with that. In fact I prefer Wabi Sabi to modern standards.

 These sound best through the Single Ended tube amp, in fact they sound fantastic, I am well surprised.

An old ad was found on the Audio Karma site from a discount store called Dixie's and you can see where they fell in the pack.

Generous gobs of the doping material have sufficiently cover the crossover that make the 6uf cap un accessible so I will just leave it as it is.

*Wabi Sabi: Japanese for the art of imperfection.



Broadly, wabi-sabi is everything that today’s sleek, mass-produced, technology-saturated culture isn’t. It’s flea markets, not shopping malls; aged wood, not swank floor coverings; one single morning glory, not a dozen red roses. Wabi-sabi understands the tender, raw beauty of a gray December landscape and the aching elegance of an abandoned building or shed. It celebrates cracks and crevices and rot and all the other marks that time and weather and use leave behind. To discover wabi-sabi is to see the singular beauty in something that may first look decrepit and ugly.

Wabi-sabi reminds us that we are all transient beings on this planet—that our bodies, as well as the material world around us, are in the process of returning to dust. Nature’s cycles of growth, decay, and erosion are embodied in frayed edges, rust, liver spots. Through wabi-sabi, we learn to embrace both the glory and the melancholy found in these marks of passing time.

Tannoy C-10 Speakers

Another set of speakers showed up this week, Canadian made Tannoy C-10, manufactured under license by API, the same makers of Energy, Mirage, Sound Dynamics, ESM, Image, DB Plus, and probably a few more.

These Tannoy's use a 10 inch woofer pair up with a Vifa dome tweeter, the crossover is a simple first cross on the woofer and a second cross to the tweeter. This pair needed a new 6.8uf Solen cap installed as no signal was getting through to the tweeter. New foam surrounds were also installed as the old set had sen their day.

This is my second pair of Canadian made Tannoy's, I had a pair of Tannoy C-6's a few years back.

I am impressed with this Tannoy offering from API, the bottom end is full and with any Vifa tweeter the upper mid range and high end is crisp and clean.

At 92db sensitivity these Tannoy's run well with a tube amp and sound right at home with the rest of my speaker collection. They are non fatiguing with a great open sound stage. the imaging, although not as precise ad the Tannoy Oxford Gold's is pretty good, API really do make good consumer orientated speakers.