Need copper speaker cable recommendations $300 ish

Make your own. Neotech UP-OCC 14 gauge copper in PTFE at Parts Connexion.

Audio Envy is very good.Dueland or Neotech if you want to make your own.

This is a little more than what you want to spend but Chris at Blackcatcables.com makes some well reviewed cables.
https://blackcatcable.com/collections/speaker-cables/products/coppertone-speaker-cable?variant=20126386880571

There’s also Zu Audio speaker cables that are a steal at the prices they’re asking for on eBay:
https://www.ebay.com/itm/Zu-Audio-MISSION-Loudspeaker-Cable-Mk-I-8-ft-banana-to-banana-New/133480694798?epid=17029676900&hash=item1f1411c40e:g:5zsAAOSwnGFfJGEY

Both make their own cables from scratch. There’s more out there so take your time and then decide.

All the best,
Nonoise

There's a company called HCM Audio in the US, they are currently offering closeout deals on Audioquest GBC and GLC speaker cable sets, a 8ft pair of the GBC is listed at less than $150 terminated. They are also listing "Extreme Silver" IC cables at about 1/4 of the original prices, just to give  some idea of what you might save. I believe the cables are stocks of cable types made redundant by upgrades in the Audioquest line, and bought up by the retailer but are still regarded as genuine Audioquest.If the GBC is the same cable that was superseded by the Gibraltar when Audioquest went over to the DBS system for their higher end cables then it's an excellent cable. I have no connection with either company but have been using Audioquest cables for many years. Not sure where you are (if) in the US so I can't comment on taxes and delivery costs. 

Isn't there a cable company in the US that allows you to try cables at home and return them if you're not happy? I seem to recall one many years ago and wishing that we, in the UK, had access to a supplier like that.
Good luck with the search

Visit VH Audio for both quality bulk cable and made-up cables. Another very good supplier like PartsConnexion but with different merchandise.

last time I researched, long time ago, I decided to believe in avoiding the ’skin effect’

read here

https://en.wikipedia.org/wiki/Litz_wire

so, no large diameter strands, each strand individually jacketed or coated to maintain individuality except at ends.

I made my own using Cat 5 cables, 8 wires per leg. My friend doubled his, 16 strands per leg. There is a reason to avoid long runs of Cat 5 I think, someone else here explained it.

you might make your own, buy some nice connectors, spend the rest of the $300. on content.

Try Blue Jeans Cable. Good copper stuff and very affordable.

http://www.bluejeanscable.com/

Watch you tube on making speakers cables ,really not hard.You will love them.

@falconquest @limomangus @elliotbcombnewjr @twoleftears @millercarbon @pcutter1 Thank you all for providing me great options. 

If I wanted to make a my own speaker cable  with https://www.partsconnexion.com/NEOTECH-70757.html this wire How do I separate the left and right? Since this thing looks like it comes with just one red wire unlike all the other diy speaker cable bunch that are thick and comes with at least 2 separate wires in one cables, one red and one black or so. A little confused. 

Why make your own when you’re can buy them at a reasonable price?

There’s a 6ft pair of Acoustic Zen Satoris available here for $425 (about $800 retail).  Great all-around cables — you won’t be disappointed, but if you are, just sell them.  Best of luck. 

How do I separate the left and right? Since this thing looks like it comes with just one red wire unlike all the other diy speaker cable bunch that are thick and comes with at least 2 separate wires in one cables, one red and one black or so. A little confused.

I use a little piece of heat-shrink to add a black marker to each end of one wire of the pair. Then use a larger piece of heat-shrink every six inches to hold the two wires together in a pair. Keep the wire in one direction and try both directions when testing if you want. For a 6' pair, you'll need 24' of wire.

Straightwire.com

Make your own and spend $600 on something else. For short runs it makes little difference until you're spending 4 figures on both amp and speakers. IMO. YMMV

Mogami 3103 o4 3104 at Redco. https://www.redco.com/search.php?mode=search&page=1&keep_https=yeshttp://
You can get your connectors there as well if you need to solder.
I believe Redco does the 3103 in a "custom cable" if you are not handy with a soldering iron or can't do a bare-end connection on both sides.Mogami is a great value, excellent resolution and very musical.

@talkskiwon solid core UP-OCC wire is way better than the stranded copper in the budget cables suggested. In my system, it improves inner detail resolution, speed, background blackness, and tonal color.

Thanks @noromance

I think I am closing down to either Canare 4S11 or the neotech UPOCC copper ones you suggested for me. The question is if I can make one for myself right. The Canares are custom-made from sellers and they are very affordable. But, it has 11 AWG so that might be too thick for me? I do not know. My setup is desktop with 50wpc integrated amp on a small coaxial speaker using seas L12RE/XFC driver (very low sensitivity 82.5 db at 6 ohm).

Going back to how to separate, if I understand you right, I mark two neotech cables black (with hea tshrink), I add one them to one unmarked red one, braid it or twist it, then do the rest like crimp and banana plugging. Do you think I am getting it right?

No need to braid or twist. The heatshrink will hold the wires together. You can buy an outer sheath if you want. Bare wire is better than terminations if you can get away with it.

While not as good as the OCC wire, 14 gauge Romex performs surprisingly well. Don't laugh! Make sure not to score the wire when trimming off insulation. 

That's for one leg.  To make a pair of speaker cables, you'd need 4 runs of the required length.  As that cable doesn't come in different jacket colors, you'd need to mark the ends, to keep + and - differentiated.

Canare 4s11 is easy to terminate with bananas or spades. I've done both very flexible good wire to work with. 

Cullen Cable, Audio Envy and Blue Jeans

Anticables 3.1. Solid cooper core . 8 gage double strand.

I reflect on while reading this thread there is a wide variety of speaker cable DIY and many different speaker cable manufacturers.

Feels like if we keep going on then we will end up with all the manufacturer there is. When we all buy from them or make our own.

It has been educational to see all the types.
(For myself I have made double shielded with dead soft pure silver. They're very fast transients but is not cooper.)

Check neotech nemos 3080 or 5080, Nordost flatlines, Audioquest rocket series, Kimber 8tc. Good quality copper, different geometries.

I want to second aj523 - I have been using Anticable speaker wire and interconnects for several years and I have heard a difference in my two systems with every upgrade. They are made in Minnesota - great customer service to. Check out their website - they also sell overstocks after every show they support.

Over the years I’ve owned the basic Monster/Marshall Soundrunner type cables, Belden, Cardas, and Kimber. The Kimber Kable had sounded great on my system, but when I moved I needed much longer cables. I made my own from Monoprice OFC 12awg 4-conductor pvc wrapped twisted CL-2 cable and wrapped it in nylon techflex sheathing (also available in 2-conductor and various gauges, Mediabridge and others offer very similar bulk cable). These sound as good as any I’ve used, and are remarkably easy to do if you’re willing to terminate your own wire....should take about an hour or so.

A dealer that sells you $300 cables will pay roughly half of that, meaning the manufacturer needs to make them for somewhere near $75 to sell them for $150 to the dealer, which is a tad more than it cost me to make my own.....food for thought.

Audience Ohno are pretty good.
https://audience-av.com/cables/ohno/

https://www.thecableco.com/cables/speaker-cables/ohno-iii-speaker-cable-pair.html

I have a pair of these gathering dust in a storage box.