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Looking for portable amp on tight budget

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Re: Looking for portable amp on tight budget

Postby zan1976 » Thu Sep 17, 2020 10:09 am

Can't I simply adjust the gain level from the guitar? (reminder: NOOB HERE :shifty:)
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Re: Looking for portable amp on tight budget

Postby resistorman » Thu Sep 17, 2020 4:08 pm

You really should consider the Behringer....
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Re: Looking for portable amp on tight budget

Postby Sam Spoons » Thu Sep 17, 2020 4:32 pm

zan1976 wrote:Can't I simply adjust the gain level from the guitar? (reminder: NOOB HERE :shifty:)

Yes but, unless it is active, turning it down will change the tone, maybe a lot. Active or not, it may also be that the max level you can send will put your guitar volume at virtually zero so making it very difficult to adjust. The best way is to take your guitar into the shop and try it (if she'll let you :blush: ).
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Re: Looking for portable amp on tight budget

Postby zan1976 » Thu Sep 17, 2020 5:22 pm

resistorman wrote:You really should consider the Behringer....
In what ways is it superior to the Ibiza? Is it just a more respectable brand, or something in the specs?
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Re: Looking for portable amp on tight budget

Postby Sam Spoons » Thu Sep 17, 2020 5:53 pm

It has proper instrument inputs is a good enough reason, plus, while Behringer has been a budget brand in the past they now also make some well respected higher end kit.
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Re: Looking for portable amp on tight budget

Postby zan1976 » Thu Sep 17, 2020 6:05 pm

Sam Spoons wrote:It has proper instrument inputs is a good enough reason, plus, while Behringer has been a budget brand in the past they now also make some well respected higher end kit.
I get that, but Behringer has 40 watts peak and Ibiza has 200 RMS... Isn't that worth something?
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Re: Looking for portable amp on tight budget

Postby zan1976 » Thu Sep 17, 2020 6:34 pm

The specs:

IBIZA
RMS/max. power : 200/400W
Built-in power amplifier: 80W
Freq. range 80-20,000Hz
Woofer 10"/25cm
Tweeter 1"/25mm
Sensitivity 88dB±2dB
Max. SPL 90dB
Impedance 4 Ohms
Built-in battery Lithium 4000mAh
Power supply 100-240Vac / 50-60Hz

BEHRINGER
Amplifier Power 40 W
2 Way 8" Woofer, 1" Tweeter
Frequency range 45 Hz - 18 kHz
Delivery includes Microphone and cable
Woofer 8
Peak Power 40 W
Mic Preamp 2
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Re: Looking for portable amp on tight budget

Postby blinddrew » Thu Sep 17, 2020 8:34 pm

I'm not convinced I buy the power specs of the Ibiza. It's not got an internal power supply which limits what it's capable of. And also, how do you get 200W out of an 80W amp?
But, the Ibiza is basically the same manufacturer as my Qtx. But my model is a slightly larger one that has a proper IEC power supply, but I still have to use a little external mixer to get the guitar signal to the right level.

But finally, power ratings on PA aren't what you need to understand volume, it's the SPL. But not everyone publishes them.
Personally I'd go with the Behringer. It'll be easier to get parts for as well.
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Re: Looking for portable amp on tight budget

Postby Folderol » Thu Sep 17, 2020 9:59 pm

blinddrew wrote: And also, how do you get 200W out of an 80W amp?
Peak to peak instantaneous power. A very old dodge, which would immediately put me off.
approx. 80 x 1.414 x 2
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Re: Looking for portable amp on tight budget

Postby Sam Spoons » Thu Sep 17, 2020 11:12 pm

This ^, a speaker manufacturer who lies about power outputs does not deserve you custom.

TBF it would be most useful if Berry published the max SPL as most powered speaker manufacturers do for their products.
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Re: Looking for portable amp on tight budget

Postby resistorman » Fri Sep 18, 2020 3:55 am

zan1976 wrote:The specs:

IBIZA
RMS/max. power : 200/400W
Built-in power amplifier: 80W
Freq. range 80-20,000Hz
Woofer 10"/25cm
Tweeter 1"/25mm
Sensitivity 88dB±2dB
Max. SPL 90dB
Impedance 4 Ohms
Built-in battery Lithium 4000mAh
Power supply 100-240Vac / 50-60Hz

BEHRINGER
Amplifier Power 40 W
2 Way 8" Woofer, 1" Tweeter
Frequency range 45 Hz - 18 kHz
Delivery includes Microphone and cable
Woofer 8
Peak Power 40 W
Mic Preamp 2

Welcome to the world of manufacturer specifications :headbang:
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Re: Looking for portable amp on tight budget

Postby Folderol » Fri Sep 18, 2020 7:50 am

Frankly I wouldn't buy either based on those figures :thumbdown:
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Re: Looking for portable amp on tight budget

Postby Arpangel » Fri Sep 18, 2020 7:51 am

RMS power specs are what I’ve always believed to be correct, I ignore peak, it means nothing.
I always laugh too, when unscrupulous manufacturers describe "200 watts of power from this massive speaker" or some such nonsense, a speaker produces no sound without an amplifier, but how often have I heard people assume the power comes from the speaker.
Get the Behringer.

:crazy:
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Re: Looking for portable amp on tight budget

Postby zan1976 » Fri Sep 18, 2020 5:06 pm

I feel a little disappointed and I am reconsidering the leisure battery solution, guys. :crazy:

Can anyone tell me what I should pay attention to, regarding both battery and inverter? The battery is rechargable, right? How many hours can something like that last if I only use this setup?

https://www.amazon.co.uk/Ibiza-SLK10-Active-Loudspeaker-25/dp/B009G176P6
https://www.sweetwater.com/store/detail/MG10c--yamaha-mg10-10-channel-mixer

What parameters should I look into in order to understand this myself for other setups?
Say, this battery has x Watts, and the sum of these devices is y Watts, so if x>y the battery cuts the mustard, or something?

Sorry but it's all Greek to me and I'm Greek, too!
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Re: Looking for portable amp on tight budget

Postby Sam Spoons » Fri Sep 18, 2020 6:43 pm

They'll probably draw about 60 watts or so, so about 1/4A at 240V, that converts to roughly 5A at 12V so a 20 AH sealed lead acid battery, run down to 50% (the inverter will shut down when the voltage drops to 10V which represents, very roughly, 50% charge being used) would give you about 2 hours. But it's impossible to calculate with any accuracy and you may get three hours, or maybe only one....
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