In praise of the ESL-57


About a week ago, I was doing a Kijiji search for some kind of EL84 amp that would be suitable for a rebuild. Buried in an ad for an amp was pair of ESL-57's also for sale. Based on serial numbers and production dates, they were from the early 70's.

Out of curiosity, I asked if the Quads were still available. They were and he had re-listed them in a separate ad at a reduced price. They were missing legs/feet and according to the seller were great otherwise. Grills looked to be in decent shape and after a bit of back and forth, I decided to get them.

Was pleasantly surprised when we arrived to get them. They looked quite good. No problems that couldn't be addressed without a little TLC and elbow grease.

Took a minute after I brought them home to plug them in, and when I eventually did, one was dead. Bad power cord...

Let them sit and charge for a bit and then started running them. After a little repositioning, they were set up as they should.

All I can say is wow. This was my first experience with these lovely speakers. Because of Covid, couldn't audition them before picking up and I have not had the opportunity to listen to a pair before. 

I now understand why they have the following and reputation that they do.

Everything I have read about these speakers is true. The first track I ran through them when they were set up was Jazz at the Pawn Shop. At some point during the intro, there was someone in the audience that "yelped" something or another. I was startled as I thought there was someone standing behind me. Crazy!

I'm surprised and how good the bass is on these. Based on what I had read, was not expecting them to have the depth that they do. (This is from someone who normally listens to Cornwalls...)

The "head in a vice" thing is very true for full benefit, but as I am currently listening to the radio in the background, they are filling the room well and are not fatiguing in any way, which is odd when you consider how fast/detailed/articulate they are.

So very pleased with them!!! As soon as time allows, some temporary legs will be made so I can both get them off the milk crates as well as figure out a design for what will be the final legs.




perkri
Biggest issue as far as I know is arcing- when I had mine refurbished, a protection circuit was installed. There are people who DIY repair these things but that's way beyond my competence. Lot's to read about them if you dig, though. 
Hours of entertainment for sure :)

I feel like, from what I've seen as far as doing up the protection and rebuilding the other boards, they should, repeat, should be within my grasp.

The panels? No way!!! Not going anywhere near those suckers!!!
Perkri, when I owned ’57’s by chance I found the bass to be better WITHOUT the feet, presumably because when sitting on the floor the underneath dipole cancellation path was eliminated. Of course they were then sitting kinda low. So my (untried) suggestion would be, instead of "feet", make stands with an "apron" to block off the underneath dipole cancellation path.

They sounded magnificent with Ralph’s amps. I bought four and was going to do stacked pairs, then came to my senses and realized that my money and limited real estate and time should be devoted to products that I’m a dealer for, so I sold them.

Duke
@audiokinesis 

Thanks for that suggestion! There is a stand/frame that is available for the ESL-57's that raises the speaker and blocks the space beneath the speaker. It weighs in excess of 110 lbs and is quite rigid. It is supposed to do all that you describe. But, shipping alone would be an issue, so I have not looked into the cost.

I'm going to make some temporary lets out of ply to figure out some kind of approach that works - and I can certainly attempt a "curtain" underneath.

Love sand filled boxes...