In my previous post, I said I would add some photos from Donna and Sini’s horseback trip and the Pass Mountain hike. A couple of the photos were transferred from Sini”s phone and the files were compressed and the images downsized. I couldn’t restore these very well, but I included them anyway.
They rode horses from Saguaro Lake Ranch Stables, located on the Salt River a short distance downstream from the Saguaro Lake dam. Sini is an experienced rider, but Donna hadn’t been on a horse in 30 years.
After their ride, they had a picnic lunch on the river.
They also made a side trip to Coon Bluff and saw wild horses.
The next day, last Tuesday, they hiked the Pass Mountain Loop Trail at Usery Regional Park. A light rain shower passed through the area in the afternoon – it was light enough not to be bothersome on their hike and it presented a nice rainbow!
They had a good time and it was a nice visit with Sini.
It’s been a fairly quiet week since then, I don’t have much to report. We had another repair/maintenance item here on our park model home. It seems like I’m spending more on repairs and maintenance here than I do on the motorhome!
When we had the new heat pump and ducting installed, they told me there was a water leak under the house. I took a look. It was a pipe leaking under the refrigerator about three or four feet from the crawl space entry. Monday morning, I called Jimmy Joe’s Plumbing and they said they could have a guy out that afternoon. Later, they called me and said he could be there by noon and he showed up a few minutes after 12:00.
I showed him where the leak was and he crawled under the house. He came out a minute later and said it was an elbow fitting that cracked. The pipe was capped off – it wasn’t attached to anything. He said he could cut the fitting off and re-cap the pipe. Sounded pretty straight forward and simple. Then he floored me when he said it would cost $265!
I asked him why so much? What’s the hourly rate? He said it wasn’t an hourly thing, the price was set because he had to crawl in the dirt under the house and work on his back. He said it’s something you don’t want to do, so you’ll have to pay me to do it. I wasn’t too happy, but he was right about me not wanting to crawl under the house. I couldn’t let the leak continue, so I told him to do it.
About 20 minutes later, I heard him closing off the crawl space entry. I went outside and found him standing out of sight behind his van, talking on his cell phone. He ended his call and said he would give me a break and “only” charge $205 for the work. Some break! He wasn’t even here for half an hour. I left a review for Jimmy Joe’s on Google and Yelp – maybe it’ll save someone else some coin.
On a happier note, I ordered a Yamaha soundbar for the TV in our Arizona room from Crutchfield on Sunday. It was listed at $199 with free 2-day shipping. It shipped Monday. Last night I noticed they had a price drop on this item – $20 off. I called their customer service this morning and asked about the discounted price. Kyle was the rep I spoke to and he said, “No problem, we have a 60-day price match guarantee – I’ll process a $20 refund.” Now that’s good customer service! Kudos to Crutchfield.
Donna bought a new slow cooker – it has all of the bells and whistles. She can program heat settings and timers. She used it on Thursday to make a new-to-us chicken dish – slow cooker brown sugar garlic chicken. She served it with crispy salt and pepper potatoes and fresh green beans. It was delicious!
Friday night she changed things up with a baked shrimp with fennel and feta dish. Another tasty treat.
It was the NFL Divisional playoff weekend, so we kept dinner simple so I could watch the games. It was still good food with carnitas (pulled pork) tacos Sunday night.
I bought a USDA Prime 2.3-pound tri tip roast – or is it a steak? – at Costco. I took a picture of it before I seasoned it as it’s important to know the grain orientation when you slice it. The tri tip cut has a change in grain direction from one end to the other and you always want to cut across the grain.
I seasoned it Sunday afternoon and put it on the Traeger Monday afternoon. I made a change in the way I smoked it. I dropped the temperature of the Traeger to 180 degrees instead of 225 and smoked it for 90 minutes. Then I increased the temperature to 225 degrees for another 30 minutes. At that point, I took it out of the Traeger and put it on a hot gas grill – 450 degrees. I seared each side for three minutes.
Donna served it with Brussel sprouts in a horseradish bacon cream sauce and baked potato with butter and chives. I love the tri tip flavor when it’s simply seasoned with salt, pepper and garlic.
The weather has been near perfect with daily highs around 70 degrees, clear skies and overnight lows in the 40s. The forecast calls for more of the same in the week ahead.
*Just so you know, if you use this link to shop on Amazon and decide to purchase anything, you pay the same price as usual and I’ll earn a few pennies for the referral. It’ll go into the beer fund. Thanks!
I got busy last Friday. As I mentioned in my last post, Gleeson Mechanical was scheduled to replace our air conditioner/electric heater with a Day and Night heat pump. Things started off slowly as they didn’t show until nearly 10am, then they had to return to the shop because they forgot some necessary item. They didn’t really get started until nearly 11am.
The two guys they sent out were efficient and the installation was completed by 2:30pm. They did a good job and hauled the old unit, including all of the underfloor ducting away. We have a new heat pump, new ducting, new return box and a new thermostat. It works really well. The only gripe I have is this – I told them to be aware of the property line. Our lot is narrow – all of the Viewpoint lots are narrow. They placed the unit carefully, but they ran the evaporator drain line over the property line, creating a trip hazard for my neighbor when they walk the path to their back deck.
Our neighbors, Steve and Deena said they weren’t concerned about the drain line.
Meanwhile I received a delivery. A few weeks ago, I ordered a set of hand wound pickups for my Stratocaster guitar from Adam Asmus (Tone Hatch Pickups). His site showed a two-week wait for the pickups to be wound and he shipped them exactly two weeks later from Norfolk, Nebraska. However, it took the USPS a week to get them past Omaha, Nebraska.
I went to work on it right away. I removed the pickguard and old pickups, then installed the new ones and soldered it all together.
I’m still tweaking the pickup heights, but these are very smooth sounding pickups with what I can only describe as a richer tone. I thought I would lose some output with these, but I don’t really notice a change in volume.
If you know me or have followed this blog, you know I like to build and play vacuum tube guitar amplifiers. The warm tone of vintage-type guitar amplifiers and the feel when you drive them hard can’t be duplicated in my opinion. Recently I started looking at vacuum tube stereo amplification.
Stereo amplification is much different than instrument amplification. In a guitar amplifier, a certain amount of distortion is desirable – you want the ability to increase the sound level of the guitar and create everything from a clean sound to an over-driven distorted, fat tone.
In stereo hifi amplification, you’re aiming for a transparent gain in sound levels while faithfully reproducing the original tones. I became intrigued by the idea of low-power, single-ended, class A amplification. I learned a lot from Steve Deckert’s website for his Decware amplifiers. I would love to have one of his Decware Zen Triode amps, but the cost of an entry-level Decware is about $1,000 and there’s a long waiting list to buy one – it could take eight months or more before I could have one built. He hand builds everything. This is only a 2.3 watt amplifier. If you wonder how 2.3 watts could drive a speaker, check out his website.
I did some looking around and found affordable alternatives made in China. These obviously don’t have the same build quality, but there are people who have documented the shortcomings and how to fix them and come up with a reasonably good sounding amplifier. After researching a bit, I decided to try an amp made in China by Douk Audio and sold in the US under the brand name, Nobsound.
There are two reasons I decided to try this amp – first, it’s affordable at $315 on Amazon. Then, most of the issues on this amp are documented and fixes are easy. It’s a hand-wired, point-to-point (PTP) chassis that’s easy to modify. I figured this would get me in the door of stereo hifi amplification without breaking the bank.
They list this amp as a 6.8 watt amplifier, but I think that’s wishful thinking. It may be able to generate 6.8 watts of power, but the distortion level would be unbearable way before you got there. It’s really a 2 or 3 watt usable power amp.
Amazon delivered the amp on Friday and also delivered another product I needed for this amp. Douk Audio made a few questionable choices in components for this amp. Many of the early adopters of this amplifier complained of tubes burning out and if the rectifier tube burned out, they didn’t know how to diagnose and replace it – they just wrote it off as a cheap Chinese throwaway amplifier.
There are a couple of reasons this happened. First of all, Douk Audio sends these amps to North America for Nobsound with the same power transformer used in China. The thing is, China household voltage is nominally 110 volts. In North America 120 volts is the norm and it’s not unusual to see 122 or 124 volts at the wall outlet. The power transformer at 120 to 124 volts was supplying higher than specified voltages throughout the amplifier, killing vacuum tubes.
To counter this, I ordered an APC Line-R 1200-watt regulated power supply. It has three settings for the output voltages and can handle up to four devices connected to the output totaling 1200 watts. One of the settings is 110 volts. I measured an actual 108 volts with the 110 preset on mine. This should be fine. This unit costs about $60, so now I’m $375 into the project.
I connected the amplifier through the APC unit and connected my Celestion Bookshelf 8-ohm speakers. These aren’t the highest efficiency speakers and I hoped I would get enough volume out of them. Speaker efficiency is rated with a specification called sensitivity. A one watt, 1kHz signal is applied and the sound pressure level (SPL) is measured one meter from the center of the speaker. My speakers are rated at 89db – the minimum sensitivity recommended by Steve Deckert for low-watt use.
I was surprised! The amp sounded decent and had no problem driving the speakers. But, there was more to do. The vacuum tubes supplied with the amp were mostly good quality Russian military grade surplus tubes. This included the rectifier tube – I think Douk Audio figured they could address the rectifier failures by upgrading to the Russian tube instead of the cheap Chinese tube originally used and I hear is still in use in the China market. This would get them past the warranty period.
The power tubes are very cheap Chinese tubes. The Chinese tube is designated 6P1 and is a copy of the Russian 6P1P (6П1П in cyrillic). The tubes supplied with the amp are poorly made with a dirt-like contaminate visible inside the glass tube envelope. It’s like looking through a very dirty window. I tried scrubbing the glass with steel wool to see if it was on the outside – it’s the inside of the tube! I ordered two matched pairs of 6P1P – EV (6П1П-EB in cyrillic). Although this is a single-ended tetrode amp, it’s unusual in that two tubes are wired in parallel for the output of each channel – thus the need for matched pairs. This cost $60, so now I’m $435 into it.
I bought these tubes from an outfit called Riverstone in California. They are new old stock Russian military surplus made in 1985 and 1987 at the Svetlana factory in Saint Petersburg, Russia. This plant was built by RCA in 1937. The EV or EB suffix indicates an extended-life, ruggedized tube and these have the OTK quality control codes.
No major tube manufacturer makes these tubes anymore, just a couple of small Chinese companies do. Luckily, there are large stockpiles of the NOS Russian high quality tubes still available. The change in output tubes made a huge difference in sound quality. The frequency range was extended, reproducing higher highs and lower lows, the difference was dramatic.
But wait, there’s more. Douk Audio has another design flaw. In the power supply, they used two 150uF electrolytic capacitors – one after the rectifier tube and one following the choke. For the rectifier tube, this is bad news. I’m guessing they did this to simplify inventory and cut costs by stocking a boatload of capacitors of the same value. The thing is that larger, higher capacitance filter capacitors to smooth ripple in DC current can be a good thing. But, there is a limit and too much isn’t necessarily better. The rectifier tube is a Russian 5U4C tube which is equivalent to the RCA 5Z4. RCA’s datasheet specifies no more than 40uF – the Brimar datasheet for this tube is more conservative and specifies 33uF maximum. Well, 150uF is too much and places undue stress on the rectifier tube.
So, I ordered a Vishay Beyschlag 22uF 450 volt electrolytic capacitor made in Austria from Digi-key to replace the 150uF Chinese one. I also ordered four high-quality Solen 0.22uF (220nF) 650 volt capacitors made in France to replace the no-name brand Chinese coupling capacitors. With tax and shipping, it was another $30 – making this project cost a total of $465.
The wiring and solder connections inside the amp are tidy and impressive. I expected to reflow bad solder joints, but I didn’t find any bad ones. The cap replacements took me a lot longer than I anticipated. I told Donna this was because, in my usual fashion, I spend extra time looking for a part or tool I had in my hand a few minutes before. This can add 10-15 minutes to the job. Then I spend time looking for a small fastener or item I dropped and spend another five or 10 minutes on my hands and knees looking for it.
At the end of the day, I have a very delightful little single-ended class A vaccum tube amp for under $500. Can’t beat that! Last night I was listening to an acoustic guitar piece by Ronnie Earl and the sound reproduction was so clear, I realized I could hear his fingers sliding along the strings on chord changes! It was like he was sitting in front of me playing his guitar. Now that I know this amp is a keeper, I’ve ordered back-up vacuum tubes to have on hand, although these Russian military grade tubes should be long-life items.
On Sunday, our friend Sini flew in from San Diego. Donna picked her up at the airport and they had fun plans for the next few days. They made it into a girls retreat by renting a room at the Westgate Painted Mountain Resort and planned hiking and horseback riding activities. Last night, we all went to Baja Joe’s for a Mexican seafood dinner – Sini’s treat. Thanks, Sini!
Donna took Sini back to the airport this morning. I’ll add some photos of the hike and horseback ride in my next post as this is getting too long already.
Speaking of seafood – as I stated above, Friday was a busy day, but Donna topped it off with a dinner of walnut crusted tilapia with broccoli on the side.
The weather has remained pleasant with daily highs around 70 degrees and overnight lows in the upper 40s to 50 degrees. The mornings have had some high clouds that burn off before noon, but yesterday, we had some sprinkles of rain. It wasn’t much – I was on the pickleball court giving my coaching clinic and we managed to play through the short, light shower. The week ahead doesn’t show any significant changes.
*Just so you know, if you use this link to shop on Amazon and decide to purchase anything, you pay the same price as usual and I’ll earn a few pennies for the referral. It’ll go into the beer fund. Thanks
In my last post, I described problems we were having with the heating, ventilation, air conditioning of our park model home. I had the air conditioner/forced air heater repaired and also needed to have a 50-amp breaker installed in the power pedestal.
Park model homes in Arizona are considered “mobile” units although you cannot just hook up to a truck and drive them away. This designation changes some aspects compared to a regular sticks-and-bricks home. For one thing, we obtained the title for our unit from the motor vehicle department. Another aspect is the electrical supply to the home.
Our park model is fed electricity from SRP – the local power utility – through Viewpoint and is distributed to each site through a power pedestal just like an RV site. When we had the breaker replaced in the pedestal, I saw one of the 50-amp receptacles feeding power to our unit had a broken housing. There are two 50-amp receptacles in our pedestal – remember, each 50-amp receptacle has two legs of 50-amp current available for a total of 100 amps. With two receptacles, we have a total of 200 amps of electrical service.
The housing of the receptacle is formed from bakelite – a synthetic resin – the first form of plastic invented in 1909 and still used for its insulating properties. Bakelite is easy to form and cheap, that’s why it’s still used. However, it can be brittle. Anyway, the bakelite housing had a section broken off right where the round ground lug is located.
We had another issue with the pedestal. It’s about 34 years old and was placed in a hole in the ground – no concrete surround, just dirt. This results in corrosion and ours is badly corroded around the base. I’m a little concerned about it breaking off at the base and falling over. We placed a work order with VIewpoint – the management of Viewpoint is responsible for upkeep of the pedestal and main power supply to our park model.
They had a maintenance guy come out to look it over. He seemed to think we had nothing to be concerned about. I pointed out the broken receptacle and he said, “That’s common – it’s no big deal, that’s just the ground.” I thought “no big deal…just a ground?”
I pointed out to him that it was potentially a very big deal. With no support of the sleeve for the ground lug, the sleeve could very well have loosened and end up corroded with poor contact to the ground lug. That would mean part of our household circuit was ungrounded. The purpose of the ground is to have an low-resistance path for unwanted electricity to the negatively charged earth.
If the ground lug didn’t have good contact, we may not have that path to earth. Let’s consider a defective appliance like a toaster. If the toaster developed a short to the chassis and/or metal cover, the electricity should be delivered through the ground. This shorted circuit would draw a very large current and trip the breaker, thus telling us we had a problem.
Now, let’s suppose that the ground lug had poor conductivity. There’s no path to ground, so the chassis is charged with electricity with place no to go. Excess current isn’t developed, so the breaker doesn’t trip. The toaster sits there on the counter charged with electricity and if you happen to be unlucky enough to touch it, you become the path to ground. The current would flow through your hand and body and exit from your feet. Bad news.
He said he would get an electrician out to fix the receptacle. I wonder how many people here bought into his thought of the ground being no big deal – he said the broken bakelite was common, right? A guy from Flatiron Electric came out on Tuesday while I was giving pickleball lessons. He talked to Donna and went back to the pedestal. He came out a short time later and told Donna he would have to return the next day. He admitted being a new guy and I think he got a scare – the pedestal is daisy-chained with several others and the input lines remain hot when you work on it. You can only break the connection between the pedestal and the house – to break the feed line would mean disrupting power to a whole row or more of houses.
I confirmed Donna’s suspicion – she said the guy looked a little shook up when he left. I found half of the outlets in our Arizona room weren’t working. I found a tripped ground fault circuit interupter (GFCI). He must have shorted a hot lead and tripped the GFCI. I bet it made a big spark before the GFCI tripped!
He came back yesterday morning and got the job done. He must have had a lesson or two the afternoon before, because he replaced the receptacle fairly quickly, without incident.
I neglected to take a photo of the old, broken receptacle before it was replaced.
On Tuesday, we also had Brandon from Gleeson Mechanical come out to give us a quote on a new air conditioner/heating unit. He spent more time looking everything over than the previous two contractors we got quotes from. In the time between the quote from Liberty last Friday and Gleeson on Tuesday, I did more research.
I was initially inclined to go with an electric heat strip for winter heat. I was a little skeptical about a heat pump. This was because the heat pumps we have on our motorhome don’t work very well when the temperature is below the mid-30s. This only happens occasionally here in Mesa, but we do have the odd frosty morning here and there.
What I found was my assumption based on the motorhome wasn’t a good one. The units on our coach are 20 years old and are much smaller than a residential unit. The technology has improved over time and current heat pumps remain efficient until the temperature drops below 25 degrees for an extended time. This doesn’t happen here. A heat pump costs a few hundred more initially, but it’s more energy-efficient and will save on utility bills.
Gleeson Mechanical gave us a quote for a 2.5 ton Day and Night brand heat pump with new ducting. The price was $4,800 – this is $900 more than the quote from Liberty, but it’s an apples-and-oranges comparison. Day and Night is a brand from Carrier Corporation – a well-respected brand of heat pumps with a track record for quality and reliability. Liberty quoted a Broan 2.5 ton air conditioner with an 8kW heat strip. Broan is a brand name under Nutek. I can’t find much in the way of favorable reviews for their products.
The first quote we received was for a Day and Night 3.0 ton air conditioner with an 8kW heat strip and it was $5,500. My research indicated this unit was too large for the air space in our park model home and inefficient. Also, the labor charge was high, so we wrote that guy off.
At the end of the day, I figured paying the extra $900 up front for the Day and Night 2.5 ton heat pump over the Broan will pay off in lower utility costs and peace of mind for a quality product. Gleeson will come out tomorrow and do the installation.
The weather has been very pleasant this week with daily highs in the low to mid 70s and overnight lows around 50 degrees. It looks like more of the same in the coming week with overnight lows dipping to the mid 40s. The new heat pump should cope well with that.
*Just so you know, if you use this link to shop on Amazon and decide to purchase anything, you pay the same price as usual and I’ll earn a few pennies for the referral. It’ll go into the beer fund. Thanks!
Well, we’re a week into 2022 already and I can hardly bring myself to write the year as 2022. The last two years have been a little tough on everyone with the covid restrictions. I’m hoping for a better 2022, but we’re off to a rough start.
Last weekend – New Year’s Day – had the coldest nights of the season. Saturday and Sunday nights were clear with lows in the 30s. Wouldn’t you know it, our heating unit went out on Saturday afternoon. We made do for the weekend with space heaters, but it was far from ideal.
Our central heat is integrated with the air conditioner unit. It’s not a heat pump, it has what’s called an electric heat strip. The hot air is forced through the same fan and ducting that the cooling unit uses. Donna had a referral to an HVAC guy, but it turned out he had retired. He referred us to another guy that was able to come out before noon on Monday.
He quickly found the problem. I was guessing the blower motor had fried as I smelled an electrical burnt odor much like what I would expect if the motor winding had shorted. Luckily it wasn’t that – it was a corroded connector that created excessive resistance and burned the feed wire to the blower motor. That was an easy fix, but the bad news was, it didn’t solve the problem.
When the wiring burned it also took out the double pole 50-amp breaker in the pedestal. The good news was, he had a replacement part on hand and fixed the power pedestal. More bad news was his bill – he charged a total of $450 for the repair, which I felt was excessive, but I didn’t complain, I just paid him.
He also gave us a quote for a replacement air conditioner with a heat strip – a Day and Night 3 ton unit for $5,500 installed. I told him I would have to think about it. Our current air conditioner unit is over 30 years old and it’s not a matter of if it goes out, it’s when. Looking inside the unit, I believe that will be sooner rather than later.
I set appointments for two more replacement estimates. In the meantime, I did some research to help me understand my options. The first estimator came yesterday from a Phoenix outfit called Liberty Heating and Cooling. He looked everything over and recommended a 2.5 ton unit with an 8kW heat strip. This was more in line with what I thought we needed. He included a prefabricated concrete pad – our current unit has a 6kW heat strip and is mounted directly on the ground. His quote came to a total of $3,900 – much better than $5,500.
I’m a little concerned about the quality of the unit they use though. The brand they install is called Broan. These are made by Nortek, the parent company of several brand names. Most of the reviews I’ve read aren’t positive, but it’s a small sample size.
We’ll have another local company, Gleeson Mechanical, come out on Tuesday to give us a quote. They use several brands and all are top notch. I’m curious to see how the price stacks up – I expect it to be somewhat higher than the Broan unit, but it may be worth a little extra for higher quality and reliability.
I had another issue that doesn’t make for a good start to 2022. On Wednesday, I had an appointment with a dermatologist. I had a couple of skin issues I wanted to get an opinion on. I ended up getting a full body scan. I had some pre-cancerous lesions on my face which he froze. But the bigger deal was a spot on my back that appeared to be basal cell carcinoma. He took a biopsy and yesterday, the pathologist confirmed it’s cancerous. I’m not overly concerned about it. Basal cell carcinoma usually isn’t very aggressive – it’s a slow growing tumor and can usually be found and treated before it spreads.
Unlike my previous bout with cancer (I wrote about it in a series of posts here), this was detected early. The lesion is only about the size of my pinky fingernail. I have an appointment in a couple of weeks to have it removed. Dr. Kessler will cut or scrape a small divot in my back and cauterize it. Hopefully that’s the end of the story. Basal cell carcinoma does have a high rate of recurrence, but it moves so slowly that it can be detected.
As always, Donna has been feeding me well. Our New Year’s Eve meal was special. We had an outstanding lobster mac and cheese on a half shell from Hancock Lobster in Maine. And that was just the starter! We also enjoyed some lightly fried squid and veggies with tzatziki. A great way to end 2021.
On New Year’s Day Donna fixed a pasta dish called Quick Ragu with Ricotta and Lemon. It was on the spicy side – she’ll adjust the recipe.
On Mondays during the football season, Donna knows I’ll be watching the Monday Night Football game, so she keeps it simple. Fish street tacos are a quick and easy dish and I can easily eat them while watching the game. We love fish tacos and Donna makes a great sauce for them.
Another tasty dish was a beef ragu over spaghetti squash.
The weather here took a turn for the better over the last few days. The week leading up to the end of 2021 was relatively cold and wet. I mentioned the cold, clear nights last weekend but by mid-week we had highs in the upper 60s and hit 72 degrees yesterday. Overnight lows were in the 40s. The forecast calls for more pleasant weather and relatively warm nights of 50+ degree lows until the middle of next week when we might see some rain showers.
*Just so you know, if you use this link to shop on Amazon and decide to purchase anything, you pay the same price as usual and I’ll earn a few pennies for the referral. It’ll go into the beer fund. Thanks!