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Strings for Double BassStrings for 3/4 and 4/4 size Basses

Corelli 370 Upright Bass Strings (and 360 Solo Gauge)

         Manufactured by: Corelli

Continental US - larger items may carry a partial shipping charge to AK, HI and PR
All shoppers outside the US State of New Jersey pay NO SALES TAX on any purchases at Gollihur Music. (NJ Residents pay NJ State Sales Tax of 7%.) International customers, please visit our "How to Order" Policies page for information concerning VAT and Customs Charges that may be assessed by your country and/or delivery services.
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-- Select Individual Corelli 370 Upright Bass Strings

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Corelli 370FCorelli 370
These strings are one of my personal favorites for my own particular double bass needs -- but that doesn't mean they are perfect for you. I like them for their versatility and articulate sound. These are not your Daddy's doghouse bass string... unlike the more typical and earlier string types, these have an edge to their attack, rather than the traditional blunter attack. Physically, they are thinner in gauge when compared to other strings using the typical Light/Medium/Heavy sort of measurement scheme. I also find them to be more flexible, less stiff, so I can really dig in. I have hand/nerve problems so I prefer a string that responds more easily and with less effort. They can be bright, especially initially, but calm down after play. They are also very easy to bow. I have used them sucessfully with magnetic pickups. The next paragraph is some of the marketing stuff from Corelli:


Essential discoveries in specific materials like sophisticated rope cores and specially treated high-tech metals, give these strings their exclusive characteristics. They are the result of several innovating technologies applied to their composition and winding process. Their thinner gauge allows a very bright sounding and great playing easiness. The high precision of their diameter, obtained thanks to computerised techniques of polishing and gauging, offer a perfect tuning accuracy. The 370 orchestra strings benefit from the Tungsten technology thanks to which the strings are thinner than the usual ones, easy to play, and much more brilliant.

Did I mention they are made in France by Savarez, and that Francois Rabbath was involved in their development?


A Special Note About Corelli Gauges

Corelli 370 strings come in three different gauges: M (Medium), F (Forte), and TX (Extra Forte). However, due to their construction and composition, the 370M strings -- which, by the way, are the lightest 370 set they make -- feel and play a good bit "lighter" than most other "medium gauge" strings.

This is why we describe the 370M strings as "lighter" and the 370F (which compares more directly to most other medium strings) as the "medium" weight string. If you prefer a string that has a "medium weight" feel, try the 370F (Forte) gauge.
Anyway, they come in M (Medium), F (Forte), and TX (heavy), though even their heaviest, the TX strings, are not as heavy as some other "heavies" - all of their sizes are a good deal lighter than many other strings. I prefer the Forte weight in most cases, though the TX are not much thicker; if you prefer a slightly meatier string, perhaps the TX should be your choice, though I'm not certain you'd be able to tell much difference.

Corelli does not list gauges on their packages; originally I measured and posted each, but I have since obtained the following measurements from them:

370M
(the "lightest" gauge)
Diameter (inches) Tension (pounds) 370F
(the "heavy" middle gauge)
Diameter (inches) Tension (pounds) 370TX
(the "heaviest" gauge)
Diameter (inches) Tension (pounds)
G 371M 0.0457 53.5 371F 0.0453 59.5 371TX 0.0453 57.1
D 372M 0.0520 51.4 372F 0.0547 57.8 372TX 0.0559 60.2
A 373M 0.0642 53.6 373F 0.0677 58.4 373TX 0.0724 63.1
E 374M 0.0831 54.0 374F 0.0866 58.0 374TX 0.0980 61.7
About Extended Range Strings: Corelli does not make a high C string in the "F/medium" Gauge (use the 370m high C) or a Low B in the "M/light" gauge (use the 370F low B). When we package extended range sets, we will automatically make these subsitutions.
© Gollihur Music


Bob's STRING CHANGING INSTRUCTIONS are included with every string order!
Get a preview from my on line FAQ: CHANGING STRINGS ON YOUR UPRIGHT BASS

Important Notice regarding Low E and Low B Corelli strings from the back of their packaging for those two strings (only):

"In mounting the string be careful that the metal-wrapped portion (not covered with silk) does not go around the tuning peg. This could lead to damage and eventually break the string..."

First, let's talk about the E string. In my opinion the wound section is a little long for most 3/4 size basses, and given the close position of the E string winder, the wound section will almost always have to be wound at least partially around the roller. Therefore, if you have a conventional, normal sized acoustic 3/4 size bass and the wound area goes around the peg, if it breaks I will go to bat for you to get a replacement. This has only affected perhaps one out of one hundred installs. On the other hand, if you have an unusual bass that does not have the usual afterlength (distance from bridge to tailpiece) or have small, electric bass style tuners with small rollers, you are rolling the dice - if it breaks under those circumstances I cannot get credit from Corelli for a return.

I have only had one report of a broken B string, but given the larger size of this string it may be unwise to choose it and attempt an install if the wound string section reaches and is wound around the roller, especially on smaller EUB-style tuners. The warning on the back of the package is valid, and I cannot get credit for the low B string if it is broken under those circumstances.

So you can determine if the strings are suitable for your instrument, we've measured the strings from the string side of the ball to the threaded part. measurement of the 374F (low E) string is 54 5/8 inches; the same measurement of the 376F (low B) string is 52 3/4 inches.


  • versatile
  • articulate
  • not your Daddy's doghouse bass string
  • distinct edge to their attack
  • low tension
  • Tungsten technology
  • easy to bow
  • initially bright


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International customer? Click here for important information about ordering from outside the USA, and what to expect concerning taxes, VAT, delivery times, and more.



Check Out the FAQ Resources That Apply to This Product:
   STRINGS: Changing Strings on your Upright Bass
   STRINGS: String Identification Chart

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Some of our customers have told us what they think about this product.
Check out what they had to say!
Just wanted to say thanks for your fantastic service, as well as your honest advice on strings. I just changed my old spirocores for a set of the Corelli 370F's, man I'm psyched at the sound both with fingers and bow. They are also much easier on the muscles and tendons. You're top notch, thanks again.
Mike J.
Hi folks, I'm a new customer. I found your web site using a search engine and was impressed by the amount of good info you provide.

I ordered strings based on your recommendations and am very pleased with the choice. I like experimenting and tweaking the instrument frequently. Your tips and info on tuning, care and so forth are great. The Corelli 370F strings were impressive. I'm glad I stumbled on your web site.

Also, I got my order in 2 days. That was nice. I'll definitely be doing more business with you folks in the future.

Thanks.
David A
For lack of better knowledge, I always used Thomastik Spirocore, which in arco produced a scratchy sound. Last year, I changed to Corelli 370 Forte, following the advice of Bob on the site. Thanks a lot! For the Corelli delivers a smooth and versatile sound, both pizzicato in jazz and arco for classical music.

Where else than in the State of Bass it happens that a seller does not tip the most expensive brand of strings as his personal favorite? Thanks again for this honest advice.
T.L.
Thanks for the Corelli strings from my last order - 6 days USA to Australia and on my doorstep.
Andrew O
I just received the Corelli bass strings an hour ago and I love them. Actually, I might be in love with them. I'm already researching TN state laws to see if I can legally marry them. They are installed on a '41 Kay M1 that I use for Bluegrass. Perfect strings for that purpose. Clear, distinct, quick attack, punch and I can play as hard as I want without distortion. I don't slap often, but they are even good for that due to their lesser tension. I replaced a set of LaBella Rope Core and those have been my choice for fifteen years. You really should try and market the Corellis to the Bluegrass market. They are unheard of there, and are perfect for that type music. And thanks for the fast shipping and easy buying experience.
Jonathan W.
Hi Mark,

Just got the Corelli 370TX and KK Bass Max. A very very great combination for a clear and solid arco sound on my GK MB150S. Thanks for your efficient delivery of these products which let me get the sound I have been searching for.
Beilu Z
My second set of these (Corelli 370 Strings) from you.. they are great-! Think it's been three years, so it's time. They also go on a Juzek master art, Guarnerius copy. My darling ;) Thanks, Bob
Gregory O.
I'm a first time customer. Following Bob's advice I ordered the Corelli 370 Forte string set. I love them! This was the first time I changed strings on an upright (1960 Reghin) and I have found the detailed instructions and tips very helpful. Thanks Bob and Mark!
Ilan Lukatch
On your recommendation, I just purchased a set of Corelli strings for my old flat back. I play bass in a bluegrass band that also mixes in a little swing, blues and honky tonk. All I can say is wow! These strings are really something; bright, responsive, with excellent tone from the lowest E note up! The thinness and low tension make it easy on my hands as I have a tendon problem in my left hand. Several months back I purchased a set of Eurosonics for my 1939 Kay bass and I really like those strings as well. Thanks for your your advice. Any bassist that doesn't know about your store is really at a disadvantage!
G.W.
Thanks for suggesting the Corelli 370F strings! They are sounding great on my Eastman carved bass for both pizz and arco. Even put the strings on myself. Your instructions were really helpful.
J.G. (January 2012)
I love these corellis (370TX) on my 66 kay!! they have a nice warm, but very define tone and bow like a dream. THAnks!
Mike P (April 2012)
Just a short note to inform you that I recently modified my double bass with a replacement ebony tailpiece and fitted some Corelli 370 strings. The transformation in sound and feel was amazing and coupled with the Krivo magnetic pickup purchased earlier the amplified sound is amazing. My band members now only want me to use the "big beast" for our gigs! Many thanks for your great service. Kindest Regards One happy customer.
Mark V (April 2013)
Just a short note regarding the choice of strings. On Bob's recommendation, I purchased the least expensive set, Corelli 370F, and I have since renewed them. For what I do, they are by far the most responsive and easiest to play, of the few varieties of strings that I've tried in my 9 years of playing the double bass. Thank you, once again...
Ian B. (February 2014)
Wow! You guys are always fast but the strings I ordered yesterday at lunch were here first thing this morning. For what it's worth, my Upton Ply just LOVES the Corelli 370F. I switched from Spiro Med. and the bass came to life - louder, richer, just huge. I've used Zyex, Evah, Innovations - but never got a response like this. Have a great day.
Kevin N (September 2015)
Mark, just wanted to let you know that I received my total order and was very pleased with the prices, quality and timely delivery. Your suggestion for strings (370F) was excellent. Much easier on the hands than what came with the bass. Looking forward to purchasing from you in the future. Thanks again...
Phil M (June 2016)