Phosphor Bronze Sub-Bass Strings

for Steel-String Harp Guitars

(including vintage and modern Dyer/Knutsen style instruments, Gibson instruments, and other vintage American instruments and modern instruments.  Note: Many vintage guitars had options of being strung with either steel, silk and steel, or gut, and often originally used silk and steel or other compound string sub-basses.  Please consult a vintage guitar expert if you are unsure about your instrument)

Free Shipping on all orders of $100 or more! *
* International Customers
please contact us for quote.

Tuning & Gauge Guide

includes: 

  • Stephen Bennett Tuning

  • Dyer 6-bass Standard

  • Dyer/Knutsen 5-bass Standard

Sub-bass Sets
  • Stephen Bennett Tuning

  • Dyer 6-bass Standard

  • Dyer/Knutsen 5-bass Standard

  • Gibson Style U Standard

in either  D'Addario or John Pearse

Sub-bass Singles

from .034" to .100"

in either  D'Addario or John Pearse

Tuning & Gauge Guide
(Nominal Phosphor Bronze
Gauges [inches] )

Dyer harp guitars and similar instruments

Sub-Bass String (descending)

Vibrating String Length* Bennett 
Tuning
String Gauge Range*** Dyer 6-bass Standard String Gauge Range*** Dyer/Knutsen 5-bass Standard String Gauge Range***
Pitch Light Medium Pitch Light Medium Vibrating String Length** Pitch Light Medium
27-11/16" G,, 0.040 0.044 D,, 0.054 0.059 27-15/16" D,, .053 .058
2 28-5/8" D,, 0.052 0.057 C,, 0.058 0.064 29" C,, .057 .063
3 29-9/16" C,, 0.057 0.062 B,,, 0.060 0.066 30-5/16" B,,, .058 .064
4 30-11/16" B,,, 0.058 0.064 A,,, 0.065 0.073 31-9/16" A,,, .063 .070
5 31-3/4" A,,, 0.063 0.070 G,,, 0.072 0.081 32-7/8" G,,, .069 .077
6 33-1/8" G,,, 0.068 0.076 F,,, 0.079 0.089  
  • * These measurements represent a typical 6-sub-bass Dyer harp guitar (yours may be slightly different).  There is about an inch of leeway on these lengths while remaining in a safe tension range (for new or properly restored instruments).

  • ** These measurements represent the GAL 5-sub-bass Dyer harp guitar plans.  Knutsen harp guitars vary greatly by specimen; compare yours against these measurements.

  • *** Go lighter if you tune that particular string up a half step on occasion.  Go heavier if you tune it down a half step or more.
    Use this convenient applet to calculate your specific gauges and tension (phosphor bronze only).

  • "Light" gauge range above = approximately 25 pounds of tension (per string); "Medium" = approximately 30 pounds of tension (per string).

  • Please contact us if you are unsure about what gauges to use.

  • NOTICE: These gauges are given as a guideline only.  Harp Guitar Music is not responsible for any instrument damage incurred by stringing.  

Phosphor Bronze Sub-bass Sets

Harp Guitar Music sub-bass sets are specifically put together by harp guitarist/engineer Gregg Miner for balanced, medium tension to provide optimum tone and feel while retaining a comfortable safety margin for both modern and vintage instruments.

NOTICE: Compare your instrument's string lengths against Gauge Chart above.  Harp Guitar Music is not responsible for any instrument damage incurred by stringing.  Please consult a vintage guitar expert if you are unsure about your instrument.

Dyer harp guitars and similar instruments

Harp Guitar Music John Pearse set, Bennett tuning
(6 sub-basses, balanced light/medium tension)
.042, .054, .060, .062, .066, .072

$24.95

Harp Guitar Music D'Addario set, Bennett tuning
(6 sub-basses, balanced light/medium tension, .070 substituted for low G)

$14.95

Harp Guitar Music John Pearse set, Standard Dyer tuning
(6 sub-basses, balanced light/X-light tension*)
.055, .060, .062, .068, .072, .080
* This set is lighter than I would prefer; limited by currently available gauges

$33.95

Harp Guitar Music John Pearse set, Standard Knutsen/Dyer tuning
(5 sub-basses, balanced light/medium tension)
.056, .060, .062, .068, .076

$24.95

Gibson Style U (standard floating bridge model)

Finally - a balanced phosphor bronze Gibson set that won't destroy your instrument!  Gauged slightly lighter than the Dyer sets, at roughly 25 pounds per string for a total sub-bass pull of 250-260 pounds. (Heavier tension set available if desired)

10 sub-basses, tuned (descending, first sub-bass is equivalent to the 4th fret on the guitar's 6th string): G#, G, F#, F (remember, no E string), D#, D, C#, C, B, A#

Harp Guitar Music John Pearse Gibson set

.034. .036, .038, .039, .045, .046, .048, .050, .053, .056

$24.95

Harp Guitar Music D'Addario Gibson set

.034, .036, .039, .039, .045, .047, .049, .052, .053, .056

$19.95

Phosphor Bronze Sub-bass Singles
Gauge D'Addario

Popular fine quality strings at low prices.

John Pearse
JP strings offer more gauges and are considered superior in quality by many professionals.
Discount bulk packs of 5 per gauge available by pre-order Discount bulk of 6 per gauge available by pre-order
.034" $1.95
$2.45
.036" $1.95
$2.45
.038" n/a   $2.45
.039" $1.95
$2.45
.042" $1.95
$2.45
.045" $1.95
$2.45
.046" n/a   $2.45
.047" $1.95

n/a  
.048" n/a   $2.75
.049" $2.15
n/a  
.050" n/a   $2.75
.052" $2.15
n/a  
.053" $2.15
$2.75
.054" $2.15

$2.75
.055" n/a   $2.75
.056" $2.15
$2.75
.058" n/a   $2.75
.059" $2.15
$2.75
.060" $2.15
$2.95
.062" $2.45
$3.45
.064" $2.45

$3.95
.066" $2.45
$3.95
.068" n/a   $5.95 (dbl-wound)
.070" $3.95
$9.95 (dbl-wound)
.072" n/a   $9.95 (dbl-wound)
.076" n/a   $9.95 (dbl-wound)
.080" n/a   $9.95 (dbl-wound)
D'Addario .045, .065, .080, .100 and .130 acoustic bass strings
(longer length with large ball) are available as well.

Professional players and luthiers (i.e. those who derive all their income from full-time musical activities): feel free to contact us for discount options.  We can likely also supply your standard neck strings.

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