Hi people
I was plaining to upgrade the OP-amplifiers in my car audio amp JBL px300.4 but i found out that it uses quad op amps version of JRC 2058D so i need advice for some better quality quad op amp.
p.s 2058D has the same electrical characteristics of JRC 4558
Thak you
Bye Alex
I was plaining to upgrade the OP-amplifiers in my car audio amp JBL px300.4 but i found out that it uses quad op amps version of JRC 2058D so i need advice for some better quality quad op amp.
p.s 2058D has the same electrical characteristics of JRC 4558
Thak you
Bye Alex
Burr Brown makes quad versions of their OPA134 and OPA132: they are the OPA4134 and OPA4132. These are both FET input opamps, whereas the 2058/4558 is a bipolar input. They are also much faster than the 4558. Therefore they are not necessarily a drop-in replacement. In order to get optimum noise performance, and to ensure stability, you would need to re-evaluate the other components in the system, such as the value of the input and feedback resistors, etc.
One which is more likely to be a direct drop-in is the National LM837. It has similar performance to the NE5532, much better than the 2058. Specs include: distortion 0.0015%, noise 4.5 nV/sqrt(Hz), GBWP 25 MHz. Most people around here wouldn't call it audiophile quality, but it will be a big improvement.
One which is more likely to be a direct drop-in is the National LM837. It has similar performance to the NE5532, much better than the 2058. Specs include: distortion 0.0015%, noise 4.5 nV/sqrt(Hz), GBWP 25 MHz. Most people around here wouldn't call it audiophile quality, but it will be a big improvement.
Thank again guys for the reply
Also i would like ot ask you one question more about the same amp:
Ive found that it uses TL072CP op Amps from Texas Instruments so would it be nice that i will replace those one with op275 or ad826 because those one i have in the moment, what do you recommend?
Also these op ams i have in the subwofer monoblock amp JBL 1201.1 whould it be nice to replace them also in the subwofer amp so i will get tighter bass............Also this subfower amp uses one JRC A4003B i should replace it with LME49740MA?
TL072Cp
Low Power Consumption
Wide Common-Mode and Differential
Voltage Ranges
Low Input Bias and Offset Currents
Output Short-Circuit Protection
Low Total Harmonic Distortion
0.003% Typ
Low Noise
Vn = 18 nV//Hz Typ at f = 1 kHz
High Input Impedance . . . JFET Input Stage
Internal Frequency Compensation
Latch-Up-Free Operation
High Slew Rate . . . 13 V/ms Typ
Common-Mode Input Voltage Range
Includes VCC+
The JFET-input operational amplifiers in the TL07_ series are designed as low-noise versions of the TL08_
series amplifiers with low input bias and offset currents and fast slew rate. The low harmonic distortion and low
noise make the TL07_ series ideally suited for high-fidelity and audio preamplifier applications. Each amplifier
features JFET inputs (for high input impedance) coupled with bipolar output stages integrated on a single
monolithic chip.
Supply voltage, VCC+ (see Note 1). . .. . . . . . . . . 18 V
Supply voltage, VCC– (see Note 1) . . . . . . . . . . . –18 V
Differential input voltage, VID (see Note 2) . . . . ±30 V
Input voltage, VI (see Notes 1 and 3) . . . . . . . . ±15 V
Duration of output short circuit (see Note 4) . . . . unlimited
Continuous total power dissipation. . . See Dissipation
Unity Gain Bandwith ...................... 3mhz
Thanks Again to all
😀 😀 😀
Also i would like ot ask you one question more about the same amp:
Ive found that it uses TL072CP op Amps from Texas Instruments so would it be nice that i will replace those one with op275 or ad826 because those one i have in the moment, what do you recommend?
Also these op ams i have in the subwofer monoblock amp JBL 1201.1 whould it be nice to replace them also in the subwofer amp so i will get tighter bass............Also this subfower amp uses one JRC A4003B i should replace it with LME49740MA?
TL072Cp
Low Power Consumption
Wide Common-Mode and Differential
Voltage Ranges
Low Input Bias and Offset Currents
Output Short-Circuit Protection
Low Total Harmonic Distortion
0.003% Typ
Low Noise
Vn = 18 nV//Hz Typ at f = 1 kHz
High Input Impedance . . . JFET Input Stage
Internal Frequency Compensation
Latch-Up-Free Operation
High Slew Rate . . . 13 V/ms Typ
Common-Mode Input Voltage Range
Includes VCC+
The JFET-input operational amplifiers in the TL07_ series are designed as low-noise versions of the TL08_
series amplifiers with low input bias and offset currents and fast slew rate. The low harmonic distortion and low
noise make the TL07_ series ideally suited for high-fidelity and audio preamplifier applications. Each amplifier
features JFET inputs (for high input impedance) coupled with bipolar output stages integrated on a single
monolithic chip.
Supply voltage, VCC+ (see Note 1). . .. . . . . . . . . 18 V
Supply voltage, VCC– (see Note 1) . . . . . . . . . . . –18 V
Differential input voltage, VID (see Note 2) . . . . ±30 V
Input voltage, VI (see Notes 1 and 3) . . . . . . . . ±15 V
Duration of output short circuit (see Note 4) . . . . unlimited
Continuous total power dissipation. . . See Dissipation
Unity Gain Bandwith ...................... 3mhz
Thanks Again to all
😀 😀 😀
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