Online Loudspeaker Enclosure Calculation

On this page you are able to calculate a speaker enclosure with Thiele/Small parameter. The colors of the curves in the diagrams for frequency response, step response, group delay and voice-coil impedance have the following meaning:

• Black: Vented-Box with Thiele/Small-Parameter (Bullock alignment).
• Blue: Closed-Box (without filling material) aligned with Thiele/Small-parameter and a desired Qtc.
• Red: any construction of your enclosure using the same Thiele/Small-parameter. You are also able to calculate a Closed-Box if you make the value of the vent diameter very small (i.e 0.01).

Thiele Small Parameter Attention: You can put in your own Thiele/Small-parameter only if the speaker-select "parameterinput" is selected. To display diagrams you must fill in all appropiate fields (zeros disables the curves). Speaker: parameterinput _18SOUND_10NW650 _18SOUND_10NMB420 _18SOUND_10NMBA520 _18SOUND_10NDA610 _18SOUND_12NMB420 _18SOUND_12ND610 _18SOUND_12ND830 _18SOUND_12ND930 _18SOUND_12NLW9300 _18SOUND_15ND830 _18SOUND_15ND930 _18SOUND_15NLW9300 _18SOUND_15NLW9401 _18SOUND_15NLW9500 _18SOUND_18NLW9400 _18SOUND_18NLW9000 _18SOUND_5W430 _18SOUND_8M400 _18SOUND_8MB500 _18SOUND_10W500 _18SOUND_10M600 _18SOUND_10MB600 _18SOUND_12W500 _18SOUND_12MB650 _18SOUND_12MB600 _18SOUND_12MB700 _18SOUND_12W700 _18SOUND_12W750 _18SOUND_12MB1000 _18SOUND_12LW1400 _18SOUND_15W500 _18SOUND_15MB606 _18SOUND_15MB700 _18SOUND_15W700 _18SOUND_15W750 _18SOUND_15W930 _18SOUND_15MB1000 _18SOUND_15LW1401 _18SOUND_15LW2400 _18SOUND_18W2000 _18SOUND_18LW1250 _18SOUND_18LW1400 _18SOUND_18LW2400 _18SOUND_18TLW3000 _18SOUND_21LW1400 BC_SPEAKERS_10CL51 BC_SPEAKERS_10HPL64 BC_SPEAKERS_10NDL64 BC_SPEAKERS_10NW64 BC_SPEAKERS_10FW64 BC_SPEAKERS_10MD26 BC_SPEAKERS_12BG100 BC_SPEAKERS_12CL64 BC_SPEAKERS_12CL76 BC_SPEAKERS_12NBX100 BC_SPEAKERS_12NDL76 BC_SPEAKERS_12NDL88 BC_SPEAKERS_12NW100 BC_SPEAKERS_12NW76 BC_SPEAKERS_12FW64 BC_SPEAKERS_12FW76 BC_SPEAKERS_12MH32 BC_SPEAKERS_12PE32 BC_SPEAKERS_12PLB76 BC_SPEAKERS_12PS100 BC_SPEAKERS_12TBX100 BC_SPEAKERS_15BG100 BC_SPEAKERS_15CL76 BC_SPEAKERS_15NA100 BC_SPEAKERS_15NBX100 BC_SPEAKERS_15NDL76 BC_SPEAKERS_15NDL88 BC_SPEAKERS_15NW100 BC_SPEAKERS_15NW76 BC_SPEAKERS_15SW100 BC_SPEAKERS_15SW115 BC_SPEAKERS_15FW76 BC_SPEAKERS_15PLB76 BC_SPEAKERS_15PS100 BC_SPEAKERS_15PZB100 BC_SPEAKERS_15TBW100 BC_SPEAKERS_15TBX100 BC_SPEAKERS_18IPAL BC_SPEAKERS_18NBX100 BC_SPEAKERS_18NW100 BC_SPEAKERS_18SW100 BC_SPEAKERS_18SW115 BC_SPEAKERS_18PS100 BC_SPEAKERS_18PZB100 BC_SPEAKERS_18TBW100 BC_SPEAKERS_18TBX100 BC_SPEAKERS_21IPAL BC_SPEAKERS_21SW115 BC_SPEAKERS_21SW152 BEYMA_21SW1600Nd BEYMA_18SW1600Nd BEYMA_15SW1300Nd BEYMA_12SW1300Nd BEYMA_18P1200Nd_N BEYMA_15P1200Nd_N BEYMA_18P1000Nd BEYMA_15P1000Nd BEYMA_12P1000Nd BEYMA_18P1000Fe BEYMA_15P1000Fe BEYMA_18P80Nd BEYMA_15P80Nd BEYMA_12P80Nd BEYMA_18G550 BEYMA_15G450_N BEYMA_18LX60V2 BEYMA_15LX60V2 BEYMA_12LX60V2 BEYMA_18G40 BEYMA_15G40 BEYMA_12G40 BEYMA_10G40 BEYMA_8G40 BEYMA_6G40Nd BEYMA_5G40Nd BEYMA_15MWNd BEYMA_12MWNd BEYMA_10MWNd BEYMA_15LW30 BEYMA_12LW30_N BEYMA_10LW30_N BEYMA_8LW30 BEYMA_8P300Fe BEYMA_6P200Nd BEYMA_6P200Fe BEYMA_5P200Fe BEYMA_15MI100 BEYMA_12MI100 BEYMA_10MI100 BEYMA_8MI100 BEYMA_6MI100 BEYMA_6MI90 BEYMA_605Nd BEYMA_CM_10 BEYMA_CM_8B BEYMA_BF_8R BEYMA_CM_6 BEYMA_12GA50 BEYMA_15CXA400Nd BEYMA_15XA38Nd BEYMA_12CXA400Nd BEYMA_12XA30Nd BEYMA_15KX BEYMA_12KX BEYMA_10XC25 BEYMA_8CX300Nd BEYMA_8XC20 BEYMA_6CX200Nd BEYMA_5CX200Nd BEYMA_SM118_N BEYMA_SM115_N BEYMA_SM115_K BEYMA_SM112_N BEYMA_SM112_W BEYMA_SM212 BEYMA_SM110_N BEYMA_SM108 BEYMA_12B100_R BEYMA_12BR70 BEYMA_10BR60 BEYMA_8BR40_N BEYMA_8WOOFER_P_V2 BEYMA_8M70_V2 BEYMA_6B30_P BEYMA_5MP60_N BEYMA_5M30 BEYMA_8BX_N BMS_5N155 BMS_5N160 BMS_6N160 BMS_8N515 BMS_8N519 BMS_12N610 BMS_12N620 BMS_12N802 BMS_12N803 BMS_12N810 BMS_12N820 BMS_15N620 BMS_15N820 BMS_12N630 BMS_12N804 BMS_15N630 BMS_15N830_V2 BMS_18N830_V2 BMS_15N840 BMS_15N850_V2 BMS_18N840 BMS_18N850_V2 BMS_18N862 BMS_5S117 BMS_6S117 BMS_8S215 BMS_12S320 BMS_12S302 BMS_15S320 BMS_12S330 BMS_12S305 BMS_15S330 BMS_15S430_V2 BMS_18S430_V2 BMS_18S450 CELESTION_NTR10_2016D CELESTION_NTR10_2520E CELESTION_TF_1525 CELESTION_TF_1530 CELESTION_TF_1530_ CELESTION_TN1530 CELESTION_TN1525 CELESTION_TN1230 CELESTION_TN1225 CELESTION_FTR15_3070C CELESTION_FTR15_3070E CELESTION_FTR15_4080FD CELESTION_FTR15_4080HDX CELESTION_FTR15_4080F CELESTION_FTR12_3070C CIARE_NDPA_3_5 CIARE_NDPA_4 CIARE_NDPA_5 CIARE_NDPA_6 CIARE_NDK_6_1_5 CIARE_6_38_NdW CIARE_8_50_NdW CIARE_NDK_8_3 CIARE_NDK_10_3 CIARE_NDE_10_3 CIARE_NDH_10_3 CIARE_NDK_12_3 CIARE_NDC_12_3 CIARE_NDH_12_3 CIARE_NDK_15_3 CIARE_NDC_15_4S CIARE_NDH_15_4S CIARE_NDH_18_4S CIARE_NDC_18_4S CIARE_NDH_21_4S CIARE_6_32ER CIARE_6_38MR3 CIARE_FXC_6_1_5 CIARE_FXE_6_1_5 CIARE_FXE_6_2 CIARE_FXE_8_2 CIARE_FXC_8_3 CIARE_FXE_10_2_5 CIARE_FXC_10_3 CIARE_12_75W1 CIARE_FXC_12_3 CIARE_FXE_12_4 CIARE_12_00SW CIARE_15_75W CIARE_FXC_15_3 CIARE_FXE_15_4 CIARE_FXH_15_4 CIARE_15_00SW CIARE_18_00SW CIARE_FXH_18_4 CIARE_FXH_21_4S DAVIS_13KLV5A DAVIS_13KLV5MA DAVIS_16GKLV6M DAVIS_17KLV6A DAVIS_20MC8A DAVIS_25GCA10W DAYTON_ND91-4 DAYTON_ND105-4 DAYTON_CF120-4 DAYTON_RS125-4 EMINENCE_DELTA_PRO_8A EMINENCE_DELTA_PRO_8B EMINENCE_KAPPA_PRO_10A EMINENCE_KAPPA_PRO_10LF EMINENCE_LA10850 EMINENCE_DEFINIMAX_4012HO EMINENCE_DELTA_PRO_12_450A EMINENCE_DELTA_PRO_12A EMINENCE_IMPERO_12A EMINENCE_KAPPA_PRO_12A EMINENCE_LA12850 EMINENCE_LAB12 EMINENCE_LAB12C EMINENCE_DEFINIMAX_4015LF EMINENCE_DELTA_PRO_15A EMINENCE_IMPERO_15A EMINENCE_IMPERO_15C EMINENCE_KAPPA_PRO_15A EMINENCE_KAPPA_PRO_15B EMINENCE_KAPPA_PRO_15LF_2 EMINENCE_KAPPA_PRO_15LFC EMINENCE_KILOMAX_PRO_15A EMINENCE_LA15850 EMINENCE_LAB15 EMINENCE_OMEGA_PRO_15A EMINENCE_DEFINIMAX_4018LF EMINENCE_DELTA_PRO_18A EMINENCE_DELTA_PRO_18C EMINENCE_IMPERO_18A EMINENCE_IMPERO_18C EMINENCE_KILOMAX_PRO_18A EMINENCE_OMEGA_PRO_18A EMINENCE_OMEGA_PRO_18C EMINENCE_SIGMA_PRO_18A_2 EMINENCE_ALPHALITE_6A EMINENCE_ALPHALITE_6A_CBMR EMINENCE_DELTALITE_II_2510 EMINENCE_KAPPALITE_3010HO EMINENCE_KAPPALITE_3012LF EMINENCE_DELTALITE_II_2515 EMINENCE_KAPPALITE_3015 EMINENCE_KAPPALITE_3015LF EMINENCE_ALPHA_6A EMINENCE_ALPHA_6C EMINENCE_ALPHA_6CBMRA EMINENCE_BETA_6A EMINENCE_LA6_CBMR EMINENCE_ALPHA_8A EMINENCE_ALPHA_8MRA EMINENCE_BETA_8A EMINENCE_BETA_8CX EMINENCE_ALPHA_10A EMINENCE_BETA_10A EMINENCE_BETA_10CBMRA EMINENCE_BETA_10CX EMINENCE_DELTA_10A EMINENCE_DELTA_10B EMINENCE_ALPHA_12A EMINENCE_ALPHA_12A_2 EMINENCE_BETA_12CX EMINENCE_BETA_12LTA EMINENCE_DELTA_12A EMINENCE_DELTA_12B EMINENCE_DELTA_12LFA EMINENCE_DELTA_12LFC EMINENCE_KAPPA_12A EMINENCE_ALPHA_15A EMINENCE_BETA_15A EMINENCE_DELTA_15A EMINENCE_DELTA_15B EMINENCE_DELTA_15LFA EMINENCE_GAMMA_15A_2 EMINENCE_KAPPA_15A EMINENCE_KAPPA_15C EMINENCE_KAPPA_15LFA ETON_5_880_25HEX ETON_7_360_37HEX ETON_7_375_32HEX ETON_8_472_32HEX FAITAL_5FE100-4 FAITAL_5FE120-4 FAITAL_10FE200 FAITAL_10PR310 FAITAL_10PR410 FAITAL_10PR300 FAITAL_10FH530 FAITAL_10FH500 FAITAL_10FH520 FAITAL_10HP1020 FAITAL_12PR310 FAITAL_12PR310 FAITAL_12FH530 FAITAL_12FH510 FAITAL_12FH500 FAITAL_12FH520 FAITAL_12HP1010 FAITAL_12HP1020 FAITAL_12HP1030 FAITAL_12HP1060 FAITAL_15PR400 FAITAL_15FH530 FAITAL_15FH510 FAITAL_15FH500 FAITAL_15FH520 FAITAL_15HP1010 FAITAL_15FX560 FAITAL_15HP1020 FAITAL_15HP1030 FAITAL_15HP1060 FAITAL_15XL1400 FAITAL_18FH510 FAITAL_18FH500 FAITAL_18HP1010 FAITAL_18HP1022 FAITAL_18HP1040 FAITAL_18HP1020 FAITAL_18HP1042 FAITAL_18HP1030 FAITAL_18HP1060 FAITAL_18HW1070 FAITAL_18XL1600 FANE_SOVEREIGN_18_500 FANE_COLOSSUS_PRIME_18XS FANE_COLOSSUS_18XT5N FANE_COLOSSUS_18XBN FANE_COLOSSUS_18XLS FANE_COLOSSUS_18SB FANE_COLOSSUS_18_800N FANE_COLOSSUS_18XB FANE_SOVEREIGN_PRO_18_800P FANE_SOVEREIGN_PRO_8MN FANE_COLOSSUS_12XB FANE_COLOSSUS_12B FANE_SOVEREIGN_PRO_8BM FANE_SOVEREIGN_PRO_8_225 FANE_SOVEREIGN_15_600LF FANE_SOVEREIGN_15_500 FANE_SOVEREIGN_15_400 FANE_SOVEREIGN_15_400LF FANE_SOVEREIGN_15_250 FANE_COLOSSUS_15XBN FANE_COLOSSUS_15_750BMN FANE_SOVEREIGN_PRO_15_600N FANE_COLOSSUS_PRIME_15XS FANE_COLOSSUS_15XB FANE_SOVEREIGN_PRO_15_600 FANE_SOVEREIGN_PRO_15_600_LF FANE_SOVEREIGN_PRO_15_500 FANE_SOVEREIGN_12_250TC FANE_SOVEREIGN_12_500LF FANE_SOVEREIGN_12_300 FANE_SOVEREIGN_12_200 FANE_SOVEREIGN_12_200LT FANE_COLOSSUS_12MBN FANE_SOVEREIGN_PRO_12_350N FANE_COLOSSUS_12BMN FANE_COLOSSUS_12MB FANE_SOVEREIGN_PRO_12_500 FANE_COLOSSUS_12BM FANE_SOVEREIGN_PRO_12_300 FANE_SOVEREIGN_PRO_12_300S FANE_SOVEREIGN_10_300 FANE_SOVEREIGN_10_125 FANE_SOVEREIGN_PRO_10_300SC FANE_SOVEREIGN_PRO_10_300 FANE_SOVEREIGN_PRO_10M FANE_SOVEREIGN_8_225 FANE_SOVEREIGN_8_125 FANE_SOVEREIGN_6_100 FANE_STUDIO_5HPM FANE_STUDIO_5FRK FOUNTEK_FR135EX MONACOR_SP_10_150PA MONACOR_SP_10_250PRO MONACOR_SP_10_500FH MONACOR_SP_10_700HP MONACOR_SP_10A_302PA MONACOR_SP_250P MONACOR_SPA_10PA MONACOR_SPA_110PA MONACOR_SP_12_200PA MONACOR_SP_12_500FH MONACOR_SP_12_700HP MONACOR_SP_12A_302PA MONACOR_SP_30_200NEO MONACOR_SP_30_200PA MONACOR_SP_300P MONACOR_SP_30A_200PRO MONACOR_SPA_112PA MONACOR_SPA_12PA MONACOR_SPA_30PA MONACOR_SP_15_300PA MONACOR_SP_15_500FH MONACOR_SP_15_700HP MONACOR_SP_15A_402PA MONACOR_SP_38_300NEO MONACOR_SP_38_300PA MONACOR_SP_38A_300PRO MONACOR_SP_38A_500BS MONACOR_SPA_115PA MONACOR_SPA_15PA MONACOR_SPA_38PA MOREL_HU521 MOREL_HU531 MOREL_HU621 MOREL_HU631 MOREL_MW168 MOREL_H5_1 P_AUDIO_HP10W P_AUDIO_HP12W P_AUDIO_HP15W P_AUDIO_HP18W P_AUDIO_HP21W P_AUDIO_G1252 P_AUDIO_G1248N PEERLESS_SLS8 PEERLESS_HDS_EXCLUSIVE_180 PEERLESS_HDS_EXCLUSIVE_205 PEERLESS_HDS134PPB PEERLESS_HDS164PPB PEERLESS_HDS205NOMEX PEERLESS_SLS-85S25CP04-04 PEERLESS_SLS-135F25CP02-04 PEERLESS_XXLS10_8_HOME RCF_LF21N451 RCF_LF21N451 RCF_LF18N451 RCF_LF18N401 RCF_LF15N451 RCF_LF15N401 RCF_LF12N401 RCF_MB15N405 RCF_MB15N401 RCF_MB15N351 RCF_MB15N301 RCF_MB12N405 RCF_MB12N351 RCF_MB12N301 RCF_MB12N251 RCF_MB10N305 RCF_MB10N251 RCF_MB8N251 RCF_MR10N301 RCF_MR8N301 RCF_LF21X451 RCF_LF18X451 RCF_LF18X401 RCF_LF18X400 RCF_L18P400 RCF_LF18G400 RCF_L18P300 RCF_LF18G401 RCF_L18S801 RCF_LF15X401 RCF_L15P400 RCF_LF15G401 RCF_L15P200AK_II RCF_L15S801 RCF_L15P540 RCF_LF12X401 RCF_LF12G301 RCF_L8S800 RCF_MB15H401 RCF_MB15X351 RCF_MB15X301 RCF_L12P110K RCF_L12L750 RCF_L15P530 RCF_L15_554K RCF_MB12X351 RCF_MB12X301 RCF_MB12G301 RCF_L10_750YK RCF_MB10G251 RCF_L10_568H RCF_MB8G200 SBACOUSTICS_SB12CACS25-4 SBACOUSTICS_SB12CACS25-8 SBACOUSTICS_SB12MNRX2-25-4 SBACOUSTICS_SB12NRX25-4 SBACOUSTICS_SB12NRX25-8 SBACOUSTICS_SB12PAC25-4 SBACOUSTICS_SB12PACR25-4 SBACOUSTICS_SB12PFC25-4 SBACOUSTICS_SB12PFC25-8 SBACOUSTICS_SB12PFCR25-4 SBACOUSTICS_SB12PFCR25-8 SBACOUSTICS_SB13PFCR25-4 SBACOUSTICS_SB13PFCR25-8 SBACOUSTICS_SB15CAC30-4 SBACOUSTICS_SB15CAC30-8 SBACOUSTICS_SB15MFC30-4 SBACOUSTICS_SB15MFC30-8 SBACOUSTICS_SB15NBAC30-4 SBACOUSTICS_SB15NBAC30-8 SBACOUSTICS_SB15NRX2C30-4 SBACOUSTICS_SB15NRX2C30-8 SCANSPEAK_10F_4424G00 SEAS_W111_H149 SEAS_W111_H149_ SEAS_WP211D_H296 SEAS_W12CY001 SEAS_W12CY003 SEAS_W140NP_H434 SEAS_W15CY001 SEAS_W15LY001 SEAS_W16NX001 SEAS_W18NX001 SEAS_W18EX001 SEAS_P14RCY_H393 SEAS_W22NY001 SEAS_PRESTIGE_CA22RNY SEAS_PRESTIGE_CA26RE4X SEAS_PRESTIGE_CD22RN4X SEAS_PRESTIGE_ER15RLY SEAS_PRESTIGE_ER18RNX SEAS_PRESTIGE_MCA12RC SELENIUM_12W12P_Nd_SLF SELENIUM_15W12P_Nd_SLF SELENIUM_12WS600 SELENIUM_15WS600 SELENIUM_18WS600 SELENIUM_6W16P SELENIUM_8W16P SELENIUM_8W16P_16ohms SELENIUM_10W16P_16ohms SELENIUM_10W16P SELENIUM_8PW3__8PW3_SLF SELENIUM_10PW3__10PW3_SLF SELENIUM_12PW3__12PW3_SLF SELENIUM_15PW3__15PW3_SLF SELENIUM_15PW6__15PW6_SLF SELENIUM_6W4P SELENIUM_8W4P SELENIUM_15SWS1000 SELENIUM_18SWS800 SELENIUM_12MG1400 SELENIUM_8MB4P SELENIUM_10MB3P SELENIUM_12MB3P TANG_BAND_W3-2000 TANG_BAND_W3-1876S Wavecor_SW146WA01 Resonance frequency fS (Hz): VAS (litres): QTS: QMS: => QES=0.00 DC voice-coil resistance RE (Ohm): voice-coil inductance LE (mH): ------------------------------------------------------- Rg (Ohm): => QE=0.00 => QT=0.22

Enclosure Vented-Box QL: 3 enclosure > 70 litres 5 enclosure > 70 litres 7 enclosure 35-70 litres 10 enclosure < 35 litres 15 enclosure < 35 litres Vent diameter rd (cm): Closed-Box Desired QTC: (Rg=0) Your own Box Impedance Phase Phase of Sound Pressure Frequency Response Enclosure volume VB (litres): Vent diameter (cm): => (387.77 cm2) Vent length (cm): QL: Air temperature (oC): => Cair: (343.5 m/s)

Result:	Vented-Box	Closed-Box without filling	Your own Box		Your own Box parameter for Spice Simulation
Volume of enclosure	40.19 litres	24.39 litres	22.22 litres	|	fS=22.22 Hz	VB=22.22 litres	|	Sd=0.00 cm2
Resonance frequency	43.43 Hz	70.65 Hz	116.45 Hz	|	VAS=222.20 litres	QL=3.00	|	Xmax=0.00 mm
Half power frequency	54.58 Hz	70.71 Hz	95.90 Hz	|	QTS=0.22	h=5.24	|	Pnom=0.00 W
Vent diameter	5 cm (19.63 cm2)	---	22.22 cm (387.77 cm2)	|	QMS=0.00		|	SPLmax=INF dB
Vent length	4.07 cm	---	22.22 cm	|	RE=0.00 Ohm
Reference efficiency	0.00 %	0.00 %	0.00 %	|	LE=0.00 mH
Sound pressure level (SPL)	0.00 dB/W/m	0.00 dB/W/m	0.00 dB/W/m	|	Rg=0.00 Ohm
			RAL=25692.55 , RAB=0.00

last change: 11.june 2014

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