Tim's Livingroom/Theater

timoteo

timoteo

Audioholic General
96Cobra:
No the Yamaha/XPA-5 never got more than pretty warm together. But to be safe I bought an Antec AV-Cooler that sets on top of the Yamaha & pulls air up & out the back. I opened up a hole in back of the cab to allow air flow. I also had a Middle Atlantic stick on fan that is on one side vent of the XPA-5. Heat is an electronic components worst enemy so you can never be too safe. Now my gear is never more than lukewarm.

I had a HK receiver that got piping hot but my previous Denon didn't get too hot. We're your Denon/XPA combo in a confined space?

FYI: Amazon has the Antec AV-Cooler for $77 well worth it!! 2 speeds & low is more than enough.
 
96cobra10101

96cobra10101

Senior Audioholic
96Cobra:
No the Yamaha/XPA-5 never got more than pretty warm together. But to be safe I bought an Antec AV-Cooler that sets on top of the Yamaha & pulls air up & out the back. I opened up a hole in back of the cab to allow air flow. I also had a Middle Atlantic stick on fan that is on one side vent of the XPA-5. Heat is an electronic components worst enemy so you can never be too safe. Now my gear is never more than lukewarm.

I had a HK receiver that got piping hot but my previous Denon didn't get too hot. We're your Denon/XPA combo in a confined space?

FYI: Amazon has the Antec AV-Cooler for $77 well worth it!! 2 speeds & low is more than enough.
They were on a shelf rack, all sides open. The speakers the XPA is running a 4 ohm, so may have something to do with it. There separated now, but I like the idea of the Antec since I may change the setup to a wall unit.
 
TLS Guy

TLS Guy

Seriously, I have no life.
Timoteo, you have a very nice system!

However it is your fabulous Goldring/Lenco GL 75 turntable restoration that really caught my eye. It is gorgeous.

If I may I would like to provide information to members about those unique turntables.

They have continuously variable speed and are beloved of the historic 78 RPM community, as there was no standard speed in the early days.

The idler drive of these Lenco turntables is unusual to say the least.

Here is a motor block from a Lenco turntable.



The spindle is conical and has an upper and lower bearing. The speed variator runs the idler wheel up and down the conical spindle.



This is in contrast to the Garrard 301, which is variable speed to a degree via and electromagnetic eddy current brake. However the range of adjustment is not enough to satisfy the historic 78 enthusiasts.



Back in the fifties and sixties there were no plinths for transcription turntables. You mounted the table and the arm. Many where installed in beautifully made cabinets from Largs or Imhofs.

I have found some history on Imhofs, that used to have huge audio display rooms.

Information on Largs is just what I can find in my Hi-Fi Year Books of the period.

I have written to a friend of mine noted British Audio historian and author Barry M Jones. He is going to see what he can find. This is what he wrote me today about it.

Hi Mark,

Yes, I'm fit and well - a bit water logged though. But then it is April which brings for showers, only someone on high has forgotten to turn off the taps! I'm not complaining, as our water tables are very low - too many people drawing off too much water!

Largs, Imhofs... there were loads of them, but yes their histories do need recording though I doubt there is a commercial market for a book on them. What makes such a history difficulty is that most, like Imhofs, were contract furniture makers who would supply as original equipment makers, or to the furniture trade or sell as a side line to private customers. Some were bought out by expanding audio companies to ensure provision of high quality (and cheap) cabinets; yet in a twist of fate, Kavearn bought out Roberts Radio! Imhofs of course had a huge London audio showrooms - I still have one of their catalogues.

I supect Largs was bought out by someone - I'll see what I can find out.

Glad to hear the Mk.610 is still going strong - as too is my IC-2000

Barry
Getting back to the hey day of idler wheel turntables the first transcription grade turntable has to be credited to AR Sugden.



And then of course the legendary Garrard 301.



Of the Goldring Lenco, (although Goldring moved to the UK in 1933, these Lenco turntables were Swiss made) my favorite is the GL88.



I doubt the visual similarity is a coincidence!

I do think we need a vintage forum on this site. Gene does not agree. If others would like this PM Gene. The vintage information on this site if posted across a host of threads. When I post about history it seems to get more positive response, than just about any other topic, so I know the interest is here. These posts I know are visited as when doing research on historic equipment post here are well up the list now, even above some dedicated sites.

We have a diverse membership and exposing the members to what went before I think is important for a well rounded site.

And yes, this gear really does work! You do not have to make any excuses for it. I was listening to one of my Garrard 301 set ups a few days age, and was in awe at how wonderful it sounded. My system has a very extended frequency range and there was not a trace of audible rumble, from a mechanism from a half century ago. This sort of design and craftsmanship needs remembering with honor.

In closing Timoteo, I applaud your meticulous GL75 restoration, and providing an opportunity to talk about this era. I bet it will serve you well for many years to come.
 
timoteo

timoteo

Audioholic General
Thank you TLSguy for such a great rundown of some very interesting history!! Ever since I recieved the L75 (is not a GL75) from my father I have been fascinated with Lencos & other historical TTs such as Garrard. I wasn't sure how much those here at Audioholics would appreciate my TT pics since there isnt a dedicated analog forum. I would LOVE to see one made & will PM Gene & Tom myself with a request!!

I appreciate the compliments on my Lenco & all the time & hard work put into it. I love seeing photos of older tables & their parts. In rebuilding my L75 I took apart the motor, spindle, arm & anything I could to re-grease, rebuild & make new again. It gave me such an appreciation for the incredible engineering that went in to these wonderful pieces of equipment/art! It was amazing to me how low the noise floor is on such an old machine. The craftsmanship is so respectable on these & other tables in the same era. Each time I put a record on her it brings a smile on my face. Specially since it used to be my dad's.

I have a small video of it on YouTube under: Lenco L75 Rebuild & a rundown of my experience on LencoHeaven.com under: L75 with family history! Excuse the video it is my first haha!

Thanks again TLSguy for your interest!! :)
 
M

mjcmt

Audioholic
I've never understood why current manufactures don't make idler drive TT. The PRAT from these is reported as amazing, like a DD TT. The engineering is not that complicated and with all the high-end TT manufacturers you would think there would be some available at entry audiophile prices. Other than the SASKIA and VPI's rim drive option, it seems like belt drive has been the choice for these manufactures.
 
TLS Guy

TLS Guy

Seriously, I have no life.
I've never understood why current manufactures don't make idler drive TT. The PRAT from these is reported as amazing, like a DD TT. The engineering is not that complicated and with all the high-end TT manufacturers you would think there would be some available at entry audiophile prices. Other than the SASKIA and VPI's rim drive option, it seems like belt drive has been the choice for these manufactures.
In fairness, only the very best idler drive turntables were any good. The were a lot of rumbler bumblers out there. It really does take phenomenal precision engineering to make a good one.

The advent of the of small multi pole synchronous motors made belt drive turntables practical. These have lasted well and the belts last a long time. Solid state electronics made servo control with square wave generator and Hall effect sensor made direct drive possible and then the DC servo motor further improved the belt drive turntables.

You can still get an idler drive turntable, the Garrard 501, built by Loricraft who now have rights to the Garrard name.

 
timoteo

timoteo

Audioholic General
That's really cool I didn't know that Garrards were still available. I had never looked into them to buy but that's neat to know thanks!!

I know that Lencos are still available new but are not the Swiss made tables of old & are nothing like the classics.

I just picked up my record clamp & platter extension I had machined out of aluminum. Actually I didn't realize the machinist was making them. I asked for a quote & got the parts made haha!! I need to have the spindle extension made now. I'll post pics when finished, should make a nice improvement in both audio quality & looks of the table. It's almost finished!! :)
 
M

mjcmt

Audioholic
In fairness, only the very best idler drive turntables were any good. The were a lot of rumbler bumblers out there. It really does take phenomenal precision engineering to make a good one.
The Dual 1019, 1219 and 1229 were also very good idler drive TT and not all that expensive, so I don't understand how anyone says they are expensive to make.
 
flyimages

flyimages

Audiophyte
nice & clean simple setup, the wall accents puts a nice touch to it along with the yellow in the speakers
 
timoteo

timoteo

Audioholic General
Well since we have gotten a little off topic & are talking a bit about analog audio & idler drive turntables, i thought id show a few updated photos of my Lenco L75.

A lot of Lenco owners will purchase a second platter to stack on top of the original, therefore doubling the rotating mass to increase inertia & reduce transfer of vibrations. Well unfortunately i was unable to locate a second platter...so i designed & had something similar machined out of solid aluminum. It is 1" thick & is approx 11.75" in diameter. In order for the "platter extension" to line up with the original platter I had a brass spindle extension made as well. The brass is press fit into the aluminum platter & has been turned together for a seemless blend. The new platter fits like a glove over the original spindle.





Once the new platter was finished & installed i then had to raise the tonearm...no problem, raise the cradle...no worries...raise the arm lift...big problem! The original arm lift will not reach the tonearm once it has been raised 1". So i had to order some parts from McMaster Carr (large hardware company) I got a 3M coupling nut, 3M threaded rod & 3M smooth rod. These were perfect in getting the arm lift to the proper height so that it could reach the new tonearm level.





 
timoteo

timoteo

Audioholic General
So after all that designing...machining...polishing...etc. I finally have a complete Lenco L75 rebuild that sounds great & is being used on a daily basis!! This has been one of the most fun projects that i have undertaken & the results have been nothing but pleasing. Here are a couple pictures of the final product. The aluminum record clamp was also made to spec at the machine shop that i use.









There are more photos of the turntable project in my photobucket acct that is linked in my signature if interested. I hope you enjoy the photos!!
 
afterlife2

afterlife2

Audioholic Warlord
Beautiful!:eek: How does she sound?
 
Last edited by a moderator:
G

Grador

Audioholic Field Marshall
That looks amazing :eek:, but yields a negative reaction from me. I work at a machine shop in Ventura, when work and hobby combine......I get slightly annoyed.

On a sidenote you mind sharing what machine shop you use? I don't think my shop takes any public orders [we're oil manufacturing] and I doubt they'd even make something for me :mad:.
 
timoteo

timoteo

Audioholic General
Afterlife: she sounds fantastic to me!! I don't have a lot of experience with TTs but as I made progress I could definately hear a very nice improvement. The biggest improvements coming from the new cartidge, trying different tubes in the phono stage & adding the platter & weight. It has really changed the way I enjoy music now!!!

Grador: Well good thing I don't work at a machine shop because I enjoyed custom designing some of my table & seeing it all come together. The shop I used is a very small, owner/operator shop named VDJ Machining in Cerritos CA. The office I dispatch from is in the same bussiness complex so Ive known the guy for a while. He does all my machining. Sometimes he hooks little stuff up free & I'll get him gift card or something. Hes a good guy!!

Im hoping TLS Guy checks these pics out...I know he loves this side of audio equipment!!
 
G

Grador

Audioholic Field Marshall
Grador: Well good thing I don't work at a machine shop because I enjoyed custom designing some of my table & seeing it all come together. The shop I used is a very small, owner/operator shop named VDJ Machining in Cerritos CA. The office I dispatch from is in the same bussiness complex so Ive known the guy for a while. He does all my machining. Sometimes he hooks little stuff up free & I'll get him gift card or something. Hes a good guy!!
I kid, I kid (mostly). I really like the look of the press fit brass spindle insert, and think the overall design is very attractive, hats off to you.
 
timoteo

timoteo

Audioholic General
Grador:
Haha no worries!! Thank you for the compliment!! I know what you mean though...& I hope my response didn't come across sarcastic!!
 
G

Grador

Audioholic Field Marshall
DAMN YOU, you're costing me money. So your talk of bass transducers finally got to me, got a pair of aura pro bass shakers in my loveseat and am really enjoying them so far.
 
timoteo

timoteo

Audioholic General
Haha that's funny!! Yeah hang around these parts & talk with us & your bound to spend more money than you expected!! Well actually that's not true because a lot of times we save others money with good suggestions...it goes both ways I guess!!!

Shakers are fun actually & as long as they aren't turned up as to be distracting they can add a good effect to movies!!! Glad your enjoying them!! Make sure the phase is adjusted correctly so they are complimenting the sub & not fighting the tactile effect that the sub is producing!!!
 

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