Sandor's small PA

[HorvathS]

Hello!

Here is my small PA system.
All speakers and the rack is made by me.

 

[HorvathS]

My expectations were:
- small: could be packed into my car's trunk
- easy: I am packing alone
- cheap: who wants to spend a lot 🙂

Beyma SM series and Monacor drivers were fullfill my criterias.
I chosed SPA-110PA
- 150 W RMS
- 97dB
- the f3 is 56Hz in this box
- 15,3 kg
- 15mm plywood
https://www.monacor.com/en-gb/monac...er-technology/pa-midrange-speakers/spa-110pa/

The driver is az OEM version of this for half the price:
https://www.monacor.com/en-gb/monac...nology/pa-tweeters-and-horn-drivers/mrd-34pa/

Cheap drivers hard to cross, 3kHz is now the crossover point.
I use Jantzen CrossCap and Jantzen AirCore coils.

S

 

[Cuppa Joe]

3kHz is a fairly high Xover point for a 10" cone, you'll get noticeable gaps in your off-axis response.

 

[HorvathS]

3kHz is a fairly high Xover point for a 10" cone, you'll get noticeable gaps in your off-axis response.

Cheap 1" drivers cannot cross lower with 12dB/o filter. I try 18dB/o with notch filter, however it has good sound now.

I chosed 10" because 40l volume is enough instead of 60l for a 12".
This woofer usable up to 4kHz. I will measure the off-axis response, thank you!

 

[HorvathS]

The sub has the same size:
- 37*38*50 cm
- 15,4 kg
- 95dB / 300W RMS
- f3 is about 50Hz
EG10A Eminence Gamma - 10" Speaker 300 W 8 Ohm

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I have a Peavey dual 15ch EQ, 2/3 way crossover and 2 pcs Crown XLS-402 amplifiers. Amp is 260W/8Ohm - 400W/4Ohm.

S

 

[Cuppa Joe]

Just because the spec sheet says that it's usable up to 4kHz doesn't mean that its dispersion is uniform to that frequency. If you're planning to match dispersion to a 90-degree HF horn, the Xover point will be between 1600 & 1700Hz.